avcodec/nvenc: Need a separate class for each encoder
[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-libdcadec       enable DCA decoding via libdcadec [no]
214   --enable-libfaac         enable AAC encoding via libfaac [no]
215   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
216   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
217   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
218   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
219   --enable-libgme          enable Game Music Emu via libgme [no]
220   --enable-libgsm          enable GSM de/encoding via libgsm [no]
221   --enable-libiec61883     enable iec61883 via libiec61883 [no]
222   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
223   --enable-libmfx          enable HW acceleration through libmfx
224   --enable-libmodplug      enable ModPlug via libmodplug [no]
225   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
226   --enable-libnut          enable NUT (de)muxing via libnut,
227                            native (de)muxer exists [no]
228   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
229   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
230   --enable-libopencv       enable video filtering via libopencv [no]
231   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
232   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
233   --enable-libopus         enable Opus de/encoding via libopus [no]
234   --enable-libpulse        enable Pulseaudio input via libpulse [no]
235   --enable-libquvi         enable quvi input via libquvi [no]
236   --enable-librtmp         enable RTMP[E] support via librtmp [no]
237   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
238   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
239   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
240   --enable-libsoxr         enable Include libsoxr resampling [no]
241   --enable-libspeex        enable Speex de/encoding via libspeex [no]
242   --enable-libssh          enable SFTP protocol via libssh [no]
243   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
244   --enable-libtheora       enable Theora encoding via libtheora [no]
245   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
246   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
247   --enable-libv4l2         enable libv4l2/v4l-utils [no]
248   --enable-libvidstab      enable video stabilization using vid.stab [no]
249   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
250   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
251   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
252                            native implementation exists [no]
253   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
254   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
255   --enable-libwebp         enable WebP encoding via libwebp [no]
256   --enable-libx264         enable H.264 encoding via x264 [no]
257   --enable-libx265         enable HEVC encoding via x265 [no]
258   --enable-libxavs         enable AVS encoding via xavs [no]
259   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
260   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
261   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
262   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
263   --enable-libxvid         enable Xvid encoding via xvidcore,
264                            native MPEG-4/Xvid encoder exists [no]
265   --enable-libzmq          enable message passing via libzmq [no]
266   --enable-libzvbi         enable teletext support via libzvbi [no]
267   --disable-lzma           disable lzma [autodetect]
268   --enable-decklink        enable Blackmagick DeckLink I/O support [no]
269   --enable-nvenc           enable NVIDIA NVENC support [no]
270   --enable-openal          enable OpenAL 1.1 capture support [no]
271   --enable-opencl          enable OpenCL code
272   --enable-opengl          enable OpenGL rendering [no]
273   --enable-openssl         enable openssl, needed for https support
274                            if gnutls is not used [no]
275   --disable-sdl            disable sdl [autodetect]
276   --enable-x11grab         enable X11 grabbing (legacy) [no]
277   --disable-xlib           disable xlib [autodetect]
278   --disable-zlib           disable zlib [autodetect]
279
280 Toolchain options:
281   --arch=ARCH              select architecture [$arch]
282   --cpu=CPU                select the minimum required CPU (affects
283                            instruction selection, may crash on older CPUs)
284   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
285   --progs-suffix=SUFFIX    program name suffix []
286   --enable-cross-compile   assume a cross-compiler is used
287   --sysroot=PATH           root of cross-build tree
288   --sysinclude=PATH        location of cross-build system headers
289   --target-os=OS           compiler targets OS [$target_os]
290   --target-exec=CMD        command to run executables on target
291   --target-path=DIR        path to view of build directory on target
292   --target-samples=DIR     path to samples directory on target
293   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
294   --toolchain=NAME         set tool defaults according to NAME
295   --nm=NM                  use nm tool NM [$nm_default]
296   --ar=AR                  use archive tool AR [$ar_default]
297   --as=AS                  use assembler AS [$as_default]
298   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
299   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
300   --cc=CC                  use C compiler CC [$cc_default]
301   --cxx=CXX                use C compiler CXX [$cxx_default]
302   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
303   --ld=LD                  use linker LD [$ld_default]
304   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
305   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
306   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
307   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
308   --host-cc=HOSTCC         use host C compiler HOSTCC
309   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
310   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
311   --host-ld=HOSTLD         use host linker HOSTLD
312   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
313   --host-libs=HLIBS        use libs HLIBS when linking for host
314   --host-os=OS             compiler host OS [$target_os]
315   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
316   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
317   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
318   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
319   --extra-libs=ELIBS       add ELIBS [$ELIBS]
320   --extra-version=STRING   version string suffix []
321   --optflags=OPTFLAGS      override optimization-related compiler flags
322   --build-suffix=SUFFIX    library name suffix []
323   --enable-pic             build position-independent code
324   --enable-thumb           compile for Thumb instruction set
325   --enable-lto             use link-time optimization
326
327 Advanced options (experts only):
328   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
329   --disable-symver         disable symbol versioning
330   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
331   --disable-safe-bitstream-reader
332                            disable buffer boundary checking in bitreaders
333                            (faster, but may crash)
334   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
335   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
336
337 Optimization options (experts only):
338   --disable-asm            disable all assembly optimizations
339   --disable-altivec        disable AltiVec optimizations
340   --disable-amd3dnow       disable 3DNow! optimizations
341   --disable-amd3dnowext    disable 3DNow! extended optimizations
342   --disable-mmx            disable MMX optimizations
343   --disable-mmxext         disable MMXEXT optimizations
344   --disable-sse            disable SSE optimizations
345   --disable-sse2           disable SSE2 optimizations
346   --disable-sse3           disable SSE3 optimizations
347   --disable-ssse3          disable SSSE3 optimizations
348   --disable-sse4           disable SSE4 optimizations
349   --disable-sse42          disable SSE4.2 optimizations
350   --disable-avx            disable AVX optimizations
351   --disable-xop            disable XOP optimizations
352   --disable-fma3           disable FMA3 optimizations
353   --disable-fma4           disable FMA4 optimizations
354   --disable-avx2           disable AVX2 optimizations
355   --disable-armv5te        disable armv5te optimizations
356   --disable-armv6          disable armv6 optimizations
357   --disable-armv6t2        disable armv6t2 optimizations
358   --disable-vfp            disable VFP optimizations
359   --disable-neon           disable NEON optimizations
360   --disable-inline-asm     disable use of inline assembly
361   --disable-yasm           disable use of nasm/yasm assembly
362   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
363   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
364   --disable-mipsfpu        disable floating point MIPS optimizations
365   --disable-fast-unaligned consider unaligned accesses slow
366
367 Developer options (useful when working on FFmpeg itself):
368   --disable-debug          disable debugging symbols
369   --enable-debug=LEVEL     set the debug level [$debuglevel]
370   --disable-optimizations  disable compiler optimizations
371   --enable-extra-warnings  enable more compiler warnings
372   --disable-stripping      disable stripping of executables and shared libraries
373   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
374                            2 causes a slowdown at runtime.
375   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
376   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
377                            leaks and errors, using the specified valgrind binary.
378                            Cannot be combined with --target-exec
379   --enable-ftrapv          Trap arithmetic overflows
380   --samples=PATH           location of test samples for FATE, if not set use
381                            \$FATE_SAMPLES at make invocation time.
382   --enable-neon-clobber-test check NEON registers for clobbering (should be
383                            used only for debugging purposes)
384   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
385                            should be used only for debugging purposes)
386   --enable-random          randomly enable/disable components
387   --disable-random
388   --enable-random=LIST     randomly enable/disable specific components or
389   --disable-random=LIST    component groups. LIST is a comma-separated list
390                            of NAME[:PROB] entries where NAME is a component
391                            (group) and PROB the probability associated with
392                            NAME (default 0.5).
393   --random-seed=VALUE      seed value for --enable/disable-random
394
395 NOTE: Object files are built at the place where configure is launched.
396 EOF
397   exit 0
398 }
399
400 quotes='""'
401
402 log(){
403     echo "$@" >> $logfile
404 }
405
406 log_file(){
407     log BEGIN $1
408     pr -n -t $1 >> $logfile
409     log END $1
410 }
411
412 echolog(){
413     log "$@"
414     echo "$@"
415 }
416
417 warn(){
418     log "WARNING: $*"
419     WARNINGS="${WARNINGS}WARNING: $*\n"
420 }
421
422 die(){
423     echolog "$@"
424     cat <<EOF
425
426 If you think configure made a mistake, make sure you are using the latest
427 version from Git.  If the latest version fails, report the problem to the
428 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
429 EOF
430     if disabled logging; then
431         cat <<EOF
432 Rerun configure with logging enabled (do not use --disable-logging), and
433 include the log this produces with your report.
434 EOF
435     else
436         cat <<EOF
437 Include the log file "$logfile" produced by configure as this will help
438 solve the problem.
439 EOF
440     fi
441     exit 1
442 }
443
444 # Avoid locale weirdness, besides we really just want to translate ASCII.
445 toupper(){
446     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
447 }
448
449 tolower(){
450     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
451 }
452
453 c_escape(){
454     echo "$*" | sed 's/["\\]/\\\0/g'
455 }
456
457 sh_quote(){
458     v=$(echo "$1" | sed "s/'/'\\\\''/g")
459     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
460     echo "$v"
461 }
462
463 cleanws(){
464     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\\r//g'
465 }
466
467 filter(){
468     pat=$1
469     shift
470     for v; do
471         eval "case $v in $pat) echo $v ;; esac"
472     done
473 }
474
475 filter_out(){
476     pat=$1
477     shift
478     for v; do
479         eval "case $v in $pat) ;; *) echo $v ;; esac"
480     done
481 }
482
483 map(){
484     m=$1
485     shift
486     for v; do eval $m; done
487 }
488
489 add_suffix(){
490     suffix=$1
491     shift
492     for v; do echo ${v}${suffix}; done
493 }
494
495 set_all(){
496     value=$1
497     shift
498     for var in $*; do
499         eval $var=$value
500     done
501 }
502
503 set_weak(){
504     value=$1
505     shift
506     for var; do
507         eval : \${$var:=$value}
508     done
509 }
510
511 sanitize_var_name(){
512     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
513 }
514
515 set_safe(){
516     var=$1
517     shift
518     eval $(sanitize_var_name "$var")='$*'
519 }
520
521 get_safe(){
522     eval echo \$$(sanitize_var_name "$1")
523 }
524
525 pushvar(){
526     for pvar in $*; do
527         eval level=\${${pvar}_level:=0}
528         eval ${pvar}_${level}="\$$pvar"
529         eval ${pvar}_level=$(($level+1))
530     done
531 }
532
533 popvar(){
534     for pvar in $*; do
535         eval level=\${${pvar}_level:-0}
536         test $level = 0 && continue
537         eval level=$(($level-1))
538         eval $pvar="\${${pvar}_${level}}"
539         eval ${pvar}_level=$level
540         eval unset ${pvar}_${level}
541     done
542 }
543
544 enable(){
545     set_all yes $*
546 }
547
548 disable(){
549     set_all no $*
550 }
551
552 enable_weak(){
553     set_weak yes $*
554 }
555
556 disable_weak(){
557     set_weak no $*
558 }
559
560 enable_safe(){
561     for var; do
562         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
563     done
564 }
565
566 disable_safe(){
567     for var; do
568         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
569     done
570 }
571
572 do_enable_deep(){
573     for var; do
574         enabled $var && continue
575         eval sel="\$${var}_select"
576         eval sgs="\$${var}_suggest"
577         pushvar var sgs
578         enable_deep $sel
579         popvar sgs
580         enable_deep_weak $sgs
581         popvar var
582     done
583 }
584
585 enable_deep(){
586     do_enable_deep $*
587     enable $*
588 }
589
590 enable_deep_weak(){
591     for var; do
592         disabled $var && continue
593         pushvar var
594         do_enable_deep $var
595         popvar var
596         enable_weak $var
597     done
598 }
599
600 enabled(){
601     test "${1#!}" = "$1" && op== || op=!=
602     eval test "x\$${1#!}" $op "xyes"
603 }
604
605 disabled(){
606     test "${1#!}" = "$1" && op== || op=!=
607     eval test "x\$${1#!}" $op "xno"
608 }
609
610 enabled_all(){
611     for opt; do
612         enabled $opt || return 1
613     done
614 }
615
616 disabled_all(){
617     for opt; do
618         disabled $opt || return 1
619     done
620 }
621
622 enabled_any(){
623     for opt; do
624         enabled $opt && return 0
625     done
626 }
627
628 disabled_any(){
629     for opt; do
630         disabled $opt && return 0
631     done
632     return 1
633 }
634
635 set_default(){
636     for opt; do
637         eval : \${$opt:=\$${opt}_default}
638     done
639 }
640
641 is_in(){
642     value=$1
643     shift
644     for var in $*; do
645         [ $var = $value ] && return 0
646     done
647     return 1
648 }
649
650 do_check_deps(){
651     for cfg; do
652         cfg="${cfg#!}"
653         enabled ${cfg}_checking && die "Circular dependency for $cfg."
654         disabled ${cfg}_checking && continue
655         enable ${cfg}_checking
656         append allopts $cfg
657
658         eval dep_all="\$${cfg}_deps"
659         eval dep_any="\$${cfg}_deps_any"
660         eval dep_sel="\$${cfg}_select"
661         eval dep_sgs="\$${cfg}_suggest"
662         eval dep_ifa="\$${cfg}_if"
663         eval dep_ifn="\$${cfg}_if_any"
664
665         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
666         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
667         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
668
669         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
670         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
671         enabled_all  $dep_all || disable $cfg
672         enabled_any  $dep_any || disable $cfg
673         disabled_any $dep_sel && disable $cfg
674
675         if enabled $cfg; then
676             enable_deep $dep_sel
677             enable_deep_weak $dep_sgs
678         fi
679
680         disable ${cfg}_checking
681     done
682 }
683
684 check_deps(){
685     unset allopts
686
687     do_check_deps "$@"
688
689     for cfg in $allopts; do
690         enabled $cfg || continue
691         eval dep_extralibs="\$${cfg}_extralibs"
692         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
693     done
694 }
695
696 print_config(){
697     pfx=$1
698     files=$2
699     shift 2
700     map 'eval echo "$v \${$v:-no}"' "$@" |
701     awk "BEGIN { split(\"$files\", files) }
702         {
703             c = \"$pfx\" toupper(\$1);
704             v = \$2;
705             sub(/yes/, 1, v);
706             sub(/no/,  0, v);
707             for (f in files) {
708                 file = files[f];
709                 if (file ~ /\\.h\$/) {
710                     printf(\"#define %s %d\\n\", c, v) >>file;
711                 } else if (file ~ /\\.asm\$/) {
712                     printf(\"%%define %s %d\\n\", c, v) >>file;
713                 } else if (file ~ /\\.mak\$/) {
714                     n = -v ? \"\" : \"!\";
715                     printf(\"%s%s=yes\\n\", n, c) >>file;
716                 } else if (file ~ /\\.texi\$/) {
717                     pre = -v ? \"\" : \"@c \";
718                     yesno = \$2;
719                     c2 = tolower(c);
720                     gsub(/_/, \"-\", c2);
721                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
722                 }
723             }
724         }"
725 }
726
727 print_enabled(){
728     suf=$1
729     shift
730     for v; do
731         enabled $v && printf "%s\n" ${v%$suf};
732     done
733 }
734
735 append(){
736     var=$1
737     shift
738     eval "$var=\"\$$var $*\""
739 }
740
741 prepend(){
742     var=$1
743     shift
744     eval "$var=\"$* \$$var\""
745 }
746
747 unique(){
748     var=$1
749     uniq_list=""
750     for tok in $(eval echo \$$var); do
751         uniq_list="$(filter_out $tok $uniq_list) $tok"
752     done
753     eval "$var=\"${uniq_list}\""
754 }
755
756 add_cppflags(){
757     append CPPFLAGS "$@"
758 }
759
760 add_cflags(){
761     append CFLAGS $($cflags_filter "$@")
762 }
763
764 add_cxxflags(){
765     append CXXFLAGS $($cflags_filter "$@")
766 }
767
768 add_asflags(){
769     append ASFLAGS $($asflags_filter "$@")
770 }
771
772 add_ldflags(){
773     append LDFLAGS $($ldflags_filter "$@")
774 }
775
776 add_ldexeflags(){
777     append LDEXEFLAGS $($ldflags_filter "$@")
778 }
779
780 add_stripflags(){
781     append ASMSTRIPFLAGS "$@"
782 }
783
784 add_extralibs(){
785     prepend extralibs $($ldflags_filter "$@")
786 }
787
788 add_host_cppflags(){
789     append host_cppflags "$@"
790 }
791
792 add_host_cflags(){
793     append host_cflags $($host_cflags_filter "$@")
794 }
795
796 add_host_ldflags(){
797     append host_ldflags $($host_ldflags_filter "$@")
798 }
799
800 add_compat(){
801     append compat_objs $1
802     shift
803     map 'add_cppflags -D$v' "$@"
804 }
805
806 check_cmd(){
807     log "$@"
808     "$@" >> $logfile 2>&1
809 }
810
811 check_stat(){
812     log check_stat "$@"
813     stat "$1" >> $logfile 2>&1
814 }
815
816 cc_o(){
817     eval printf '%s\\n' $CC_O
818 }
819
820 cc_e(){
821     eval printf '%s\\n' $CC_E
822 }
823
824 check_cc(){
825     log check_cc "$@"
826     cat > $TMPC
827     log_file $TMPC
828     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
829 }
830
831 check_cxx(){
832     log check_cxx "$@"
833     cat > $TMPCPP
834     log_file $TMPCPP
835     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
836 }
837
838 check_oc(){
839     log check_oc "$@"
840     cat > $TMPM
841     log_file $TMPM
842     check_cmd $cc -Werror=missing-prototypes $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPM
843 }
844
845 check_cpp(){
846     log check_cpp "$@"
847     cat > $TMPC
848     log_file $TMPC
849     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
850 }
851
852 as_o(){
853     eval printf '%s\\n' $AS_O
854 }
855
856 check_as(){
857     log check_as "$@"
858     cat > $TMPS
859     log_file $TMPS
860     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
861 }
862
863 check_inline_asm(){
864     log check_inline_asm "$@"
865     name="$1"
866     code="$2"
867     shift 2
868     disable $name
869     check_cc "$@" <<EOF && enable $name
870 void foo(void){ __asm__ volatile($code); }
871 EOF
872 }
873
874 check_insn(){
875     log check_insn "$@"
876     check_inline_asm ${1}_inline "\"$2\""
877     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
878 }
879
880 check_yasm(){
881     log check_yasm "$@"
882     echo "$1" > $TMPS
883     log_file $TMPS
884     shift 1
885     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
886 }
887
888 ld_o(){
889     eval printf '%s\\n' $LD_O
890 }
891
892 check_ld(){
893     log check_ld "$@"
894     type=$1
895     shift 1
896     flags=$(filter_out '-l*|*.so' $@)
897     libs=$(filter '-l*|*.so' $@)
898     check_$type $($cflags_filter $flags) || return
899     flags=$($ldflags_filter $flags)
900     libs=$($ldflags_filter $libs)
901     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
902 }
903
904 print_include(){
905     hdr=$1
906     test "${hdr%.h}" = "${hdr}" &&
907         echo "#include $hdr"    ||
908         echo "#include <$hdr>"
909 }
910
911 check_code(){
912     log check_code "$@"
913     check=$1
914     headers=$2
915     code=$3
916     shift 3
917     {
918         for hdr in $headers; do
919             print_include $hdr
920         done
921         echo "int main(void) { $code; return 0; }"
922     } | check_$check "$@"
923 }
924
925 check_cppflags(){
926     log check_cppflags "$@"
927     check_cc "$@" <<EOF && append CPPFLAGS "$@"
928 int x;
929 EOF
930 }
931
932 test_cflags(){
933     log test_cflags "$@"
934     set -- $($cflags_filter "$@")
935     check_cc "$@" <<EOF
936 int x;
937 EOF
938 }
939
940 check_cflags(){
941     log check_cflags "$@"
942     test_cflags "$@" && add_cflags "$@"
943 }
944
945 check_cxxflags(){
946     log check_cxxflags "$@"
947     set -- $($cflags_filter "$@")
948     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
949 int x;
950 EOF
951 }
952
953 test_ldflags(){
954     log test_ldflags "$@"
955     check_ld "cc" "$@" <<EOF
956 int main(void){ return 0; }
957 EOF
958 }
959
960 check_ldflags(){
961     log check_ldflags "$@"
962     test_ldflags "$@" && add_ldflags "$@"
963 }
964
965 test_stripflags(){
966     log test_stripflags "$@"
967     # call check_cc to get a fresh TMPO
968     check_cc <<EOF
969 int main(void) { return 0; }
970 EOF
971     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
972 }
973
974 check_stripflags(){
975     log check_stripflags "$@"
976     test_stripflags "$@" && add_stripflags "$@"
977 }
978
979 check_header(){
980     log check_header "$@"
981     header=$1
982     shift
983     disable_safe $header
984     check_cpp "$@" <<EOF && enable_safe $header
985 #include <$header>
986 int x;
987 EOF
988 }
989
990 check_header_oc(){
991     log check_header_oc "$@"
992     rm -f -- "$TMPO"
993     header=$1
994     shift
995     disable_safe $header
996     {
997        echo "#include <$header>"
998        echo "int main(void) { return 0; }"
999     } | check_oc && check_stat "$TMPO" && enable_safe $headers
1000 }
1001
1002 check_func(){
1003     log check_func "$@"
1004     func=$1
1005     shift
1006     disable $func
1007     check_ld "cc" "$@" <<EOF && enable $func
1008 extern int $func();
1009 int main(void){ $func(); }
1010 EOF
1011 }
1012
1013 check_mathfunc(){
1014     log check_mathfunc "$@"
1015     func=$1
1016     narg=$2
1017     shift 2
1018     test $narg = 2 && args="f, g" || args="f"
1019     disable $func
1020     check_ld "cc" "$@" <<EOF && enable $func
1021 #include <math.h>
1022 float foo(float f, float g) { return $func($args); }
1023 int main(void){ return (int) foo; }
1024 EOF
1025 }
1026
1027 check_func_headers(){
1028     log check_func_headers "$@"
1029     headers=$1
1030     funcs=$2
1031     shift 2
1032     {
1033         for hdr in $headers; do
1034             print_include $hdr
1035         done
1036         for func in $funcs; do
1037             echo "long check_$func(void) { return (long) $func; }"
1038         done
1039         echo "int main(void) { return 0; }"
1040     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1041 }
1042
1043 check_class_headers_cpp(){
1044     log check_class_headers_cpp "$@"
1045     headers=$1
1046     classes=$2
1047     shift 2
1048     {
1049         for hdr in $headers; do
1050             echo "#include <$hdr>"
1051         done
1052         echo "int main(void) { "
1053         i=1
1054         for class in $classes; do
1055             echo "$class obj$i;"
1056             i=$(expr $i + 1)
1057         done
1058         echo "return 0; }"
1059     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1060 }
1061
1062 check_cpp_condition(){
1063     log check_cpp_condition "$@"
1064     header=$1
1065     condition=$2
1066     shift 2
1067     check_cpp "$@" <<EOF
1068 #include <$header>
1069 #if !($condition)
1070 #error "unsatisfied condition: $condition"
1071 #endif
1072 EOF
1073 }
1074
1075 check_lib(){
1076     log check_lib "$@"
1077     header="$1"
1078     func="$2"
1079     shift 2
1080     check_header $header && check_func $func "$@" && add_extralibs "$@"
1081 }
1082
1083 check_lib2(){
1084     log check_lib2 "$@"
1085     headers="$1"
1086     funcs="$2"
1087     shift 2
1088     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1089 }
1090
1091 check_lib_cpp(){
1092     log check_lib_cpp "$@"
1093     headers="$1"
1094     classes="$2"
1095     shift 2
1096     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1097 }
1098
1099 check_pkg_config(){
1100     log check_pkg_config "$@"
1101     pkgandversion="$1"
1102     pkg="${1%% *}"
1103     headers="$2"
1104     funcs="$3"
1105     shift 3
1106     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1107     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1108     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1109     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1110         set_safe ${pkg}_cflags $pkg_cflags   &&
1111         set_safe ${pkg}_libs   $pkg_libs
1112 }
1113
1114 check_exec(){
1115     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1116 }
1117
1118 check_exec_crash(){
1119     code=$(cat)
1120
1121     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1122     # are safe but may not be available everywhere.  Thus we use
1123     # raise(SIGTERM) instead.  The check is run in a subshell so we
1124     # can redirect the "Terminated" message from the shell.  SIGBUS
1125     # is not defined by standard C so it is used conditionally.
1126
1127     (check_exec "$@") >> $logfile 2>&1 <<EOF
1128 #include <signal.h>
1129 static void sighandler(int sig){
1130     raise(SIGTERM);
1131 }
1132 int foo(void){
1133     $code
1134 }
1135 int (*func_ptr)(void) = foo;
1136 int main(void){
1137     signal(SIGILL, sighandler);
1138     signal(SIGFPE, sighandler);
1139     signal(SIGSEGV, sighandler);
1140 #ifdef SIGBUS
1141     signal(SIGBUS, sighandler);
1142 #endif
1143     return func_ptr();
1144 }
1145 EOF
1146 }
1147
1148 check_type(){
1149     log check_type "$@"
1150     headers=$1
1151     type=$2
1152     shift 2
1153     disable_safe "$type"
1154     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1155 }
1156
1157 check_struct(){
1158     log check_struct "$@"
1159     headers=$1
1160     struct=$2
1161     member=$3
1162     shift 3
1163     disable_safe "${struct}_${member}"
1164     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1165         enable_safe "${struct}_${member}"
1166 }
1167
1168 check_builtin(){
1169     log check_builtin "$@"
1170     name=$1
1171     headers=$2
1172     builtin=$3
1173     shift 3
1174     disable "$name"
1175     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1176 }
1177
1178 check_compile_assert(){
1179     log check_compile_assert "$@"
1180     name=$1
1181     headers=$2
1182     condition=$3
1183     shift 3
1184     disable "$name"
1185     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1186 }
1187
1188 require(){
1189     name="$1"
1190     header="$2"
1191     func="$3"
1192     shift 3
1193     check_lib $header $func "$@" || die "ERROR: $name not found"
1194 }
1195
1196 require2(){
1197     name="$1"
1198     headers="$2"
1199     func="$3"
1200     shift 3
1201     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1202 }
1203
1204 require_cpp(){
1205     name="$1"
1206     headers="$2"
1207     classes="$3"
1208     shift 3
1209     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1210 }
1211
1212 use_pkg_config(){
1213     pkg="$1"
1214     check_pkg_config "$@" || return 1
1215     add_cflags    $(get_safe ${pkg}_cflags)
1216     add_extralibs $(get_safe ${pkg}_libs)
1217 }
1218
1219 require_pkg_config(){
1220     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1221 }
1222
1223 require_libfreetype(){
1224     log require_libfreetype "$@"
1225     pkg="freetype2"
1226     check_cmd $pkg_config --exists --print-errors $pkg \
1227       || die "ERROR: $pkg not found"
1228     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1229     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1230     {
1231         echo "#include <ft2build.h>"
1232         echo "#include FT_FREETYPE_H"
1233         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1234         echo "int main(void) { return 0; }"
1235     } | check_ld "cc" $pkg_cflags $pkg_libs \
1236       && set_safe ${pkg}_cflags $pkg_cflags \
1237       && set_safe ${pkg}_libs   $pkg_libs \
1238       || die "ERROR: $pkg not found"
1239     add_cflags    $(get_safe ${pkg}_cflags)
1240     add_extralibs $(get_safe ${pkg}_libs)
1241 }
1242
1243 hostcc_e(){
1244     eval printf '%s\\n' $HOSTCC_E
1245 }
1246
1247 hostcc_o(){
1248     eval printf '%s\\n' $HOSTCC_O
1249 }
1250
1251 check_host_cc(){
1252     log check_host_cc "$@"
1253     cat > $TMPC
1254     log_file $TMPC
1255     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1256 }
1257
1258 check_host_cpp(){
1259     log check_host_cpp "$@"
1260     cat > $TMPC
1261     log_file $TMPC
1262     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1263 }
1264
1265 check_host_cppflags(){
1266     log check_host_cppflags "$@"
1267     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1268 int x;
1269 EOF
1270 }
1271
1272 check_host_cflags(){
1273     log check_host_cflags "$@"
1274     set -- $($host_cflags_filter "$@")
1275     check_host_cc "$@" <<EOF && append host_cflags "$@"
1276 int x;
1277 EOF
1278 }
1279
1280 check_host_cpp_condition(){
1281     log check_host_cpp_condition "$@"
1282     header=$1
1283     condition=$2
1284     shift 2
1285     check_host_cpp "$@" <<EOF
1286 #include <$header>
1287 #if !($condition)
1288 #error "unsatisfied condition: $condition"
1289 #endif
1290 EOF
1291 }
1292
1293 apply(){
1294     file=$1
1295     shift
1296     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1297 }
1298
1299 cp_if_changed(){
1300     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1301     mkdir -p "$(dirname $2)"
1302     $cp_f "$1" "$2"
1303 }
1304
1305 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1306 # system-dependent things.
1307
1308 COMPONENT_LIST="
1309     bsfs
1310     decoders
1311     demuxers
1312     encoders
1313     filters
1314     hwaccels
1315     indevs
1316     muxers
1317     outdevs
1318     parsers
1319     protocols
1320 "
1321
1322 EXAMPLE_LIST="
1323     avio_reading_example
1324     decoding_encoding_example
1325     demuxing_decoding_example
1326     extract_mvs_example
1327     filter_audio_example
1328     filtering_audio_example
1329     filtering_video_example
1330     metadata_example
1331     muxing_example
1332     qsvdec_example
1333     remuxing_example
1334     resampling_audio_example
1335     scaling_video_example
1336     transcode_aac_example
1337     transcoding_example
1338 "
1339
1340 EXTERNAL_LIBRARY_LIST="
1341     avisynth
1342     bzlib
1343     crystalhd
1344     decklink
1345     frei0r
1346     gnutls
1347     iconv
1348     ladspa
1349     libaacplus
1350     libass
1351     libbluray
1352     libbs2b
1353     libcaca
1354     libcdio
1355     libcelt
1356     libdc1394
1357     libdcadec
1358     libfaac
1359     libfdk_aac
1360     libflite
1361     libfontconfig
1362     libfreetype
1363     libfribidi
1364     libgme
1365     libgsm
1366     libiec61883
1367     libilbc
1368     libmfx
1369     libmodplug
1370     libmp3lame
1371     libnut
1372     libopencore_amrnb
1373     libopencore_amrwb
1374     libopencv
1375     libopenh264
1376     libopenjpeg
1377     libopus
1378     libpulse
1379     libquvi
1380     librtmp
1381     libschroedinger
1382     libshine
1383     libsmbclient
1384     libsoxr
1385     libspeex
1386     libssh
1387     libstagefright_h264
1388     libtheora
1389     libtwolame
1390     libutvideo
1391     libv4l2
1392     libvidstab
1393     libvo_aacenc
1394     libvo_amrwbenc
1395     libvorbis
1396     libvpx
1397     libwavpack
1398     libwebp
1399     libx264
1400     libx265
1401     libxavs
1402     libxcb
1403     libxcb_shm
1404     libxcb_shape
1405     libxcb_xfixes
1406     libxvid
1407     libzmq
1408     libzvbi
1409     lzma
1410     nvenc
1411     openal
1412     opencl
1413     opengl
1414     openssl
1415     sdl
1416     x11grab
1417     xlib
1418     zlib
1419 "
1420
1421 DOCUMENT_LIST="
1422     doc
1423     htmlpages
1424     manpages
1425     podpages
1426     txtpages
1427 "
1428
1429 FEATURE_LIST="
1430     ftrapv
1431     gray
1432     hardcoded_tables
1433     runtime_cpudetect
1434     safe_bitstream_reader
1435     shared
1436     small
1437     static
1438     swscale_alpha
1439 "
1440
1441 HWACCEL_LIST="
1442     dxva2
1443     vaapi
1444     vda
1445     vdpau
1446     xvmc
1447 "
1448
1449 LIBRARY_LIST="
1450     avcodec
1451     avdevice
1452     avfilter
1453     avformat
1454     avresample
1455     avutil
1456     postproc
1457     swresample
1458     swscale
1459 "
1460
1461 LICENSE_LIST="
1462     gpl
1463     nonfree
1464     version3
1465 "
1466
1467 PROGRAM_LIST="
1468     ffplay
1469     ffprobe
1470     ffserver
1471     ffmpeg
1472 "
1473
1474 SUBSYSTEM_LIST="
1475     dct
1476     dwt
1477     error_resilience
1478     faan
1479     fast_unaligned
1480     fft
1481     lsp
1482     lzo
1483     mdct
1484     pixelutils
1485     network
1486     rdft
1487 "
1488
1489 CONFIG_LIST="
1490     $COMPONENT_LIST
1491     $DOCUMENT_LIST
1492     $EXAMPLE_LIST
1493     $EXTERNAL_LIBRARY_LIST
1494     $FEATURE_LIST
1495     $HWACCEL_LIST
1496     $LICENSE_LIST
1497     $LIBRARY_LIST
1498     $PROGRAM_LIST
1499     $SUBSYSTEM_LIST
1500     fontconfig
1501     incompatible_libav_abi
1502     memalign_hack
1503     memory_poisoning
1504     neon_clobber_test
1505     pic
1506     pod2man
1507     raise_major
1508     thumb
1509     xmm_clobber_test
1510 "
1511
1512 THREADS_LIST="
1513     pthreads
1514     os2threads
1515     w32threads
1516 "
1517
1518 ATOMICS_LIST="
1519     atomics_gcc
1520     atomics_suncc
1521     atomics_win32
1522 "
1523
1524 ARCH_LIST="
1525     aarch64
1526     alpha
1527     arm
1528     avr32
1529     avr32_ap
1530     avr32_uc
1531     bfin
1532     ia64
1533     m68k
1534     mips
1535     mips64
1536     parisc
1537     ppc
1538     ppc64
1539     s390
1540     sh4
1541     sparc
1542     sparc64
1543     tilegx
1544     tilepro
1545     tomi
1546     x86
1547     x86_32
1548     x86_64
1549 "
1550
1551 ARCH_EXT_LIST_ARM="
1552     armv5te
1553     armv6
1554     armv6t2
1555     armv8
1556     neon
1557     vfp
1558     vfpv3
1559     setend
1560 "
1561
1562 ARCH_EXT_LIST_MIPS="
1563     mipsfpu
1564     mips32r2
1565     mipsdspr1
1566     mipsdspr2
1567 "
1568
1569 ARCH_EXT_LIST_X86_SIMD="
1570     amd3dnow
1571     amd3dnowext
1572     avx
1573     avx2
1574     fma3
1575     fma4
1576     mmx
1577     mmxext
1578     sse
1579     sse2
1580     sse3
1581     sse4
1582     sse42
1583     ssse3
1584     xop
1585 "
1586
1587 ARCH_EXT_LIST_PPC="
1588     altivec
1589     dcbzl
1590     ldbrx
1591     ppc4xx
1592     vsx
1593 "
1594
1595 ARCH_EXT_LIST_X86="
1596     $ARCH_EXT_LIST_X86_SIMD
1597     cpunop
1598     i686
1599 "
1600
1601 ARCH_EXT_LIST="
1602     $ARCH_EXT_LIST_ARM
1603     $ARCH_EXT_LIST_PPC
1604     $ARCH_EXT_LIST_X86
1605     $ARCH_EXT_LIST_MIPS
1606     loongson
1607 "
1608
1609 ARCH_FEATURES="
1610     aligned_stack
1611     fast_64bit
1612     fast_clz
1613     fast_cmov
1614     local_aligned_8
1615     local_aligned_16
1616     local_aligned_32
1617     simd_align_16
1618 "
1619
1620 BUILTIN_LIST="
1621     atomic_cas_ptr
1622     atomic_compare_exchange
1623     machine_rw_barrier
1624     MemoryBarrier
1625     mm_empty
1626     rdtsc
1627     sarestart
1628     sync_val_compare_and_swap
1629 "
1630 HAVE_LIST_CMDLINE="
1631     inline_asm
1632     symver
1633     yasm
1634 "
1635
1636 HAVE_LIST_PUB="
1637     bigendian
1638     fast_unaligned
1639     incompatible_libav_abi
1640 "
1641
1642 HEADERS_LIST="
1643     alsa_asoundlib_h
1644     altivec_h
1645     arpa_inet_h
1646     asm_types_h
1647     cdio_paranoia_h
1648     cdio_paranoia_paranoia_h
1649     dev_bktr_ioctl_bt848_h
1650     dev_bktr_ioctl_meteor_h
1651     dev_ic_bt8xx_h
1652     dev_video_bktr_ioctl_bt848_h
1653     dev_video_meteor_ioctl_meteor_h
1654     direct_h
1655     dlfcn_h
1656     dxva_h
1657     ES2_gl_h
1658     gsm_h
1659     io_h
1660     mach_mach_time_h
1661     machine_ioctl_bt848_h
1662     machine_ioctl_meteor_h
1663     malloc_h
1664     openjpeg_1_5_openjpeg_h
1665     OpenGL_gl3_h
1666     poll_h
1667     sndio_h
1668     soundcard_h
1669     sys_mman_h
1670     sys_param_h
1671     sys_resource_h
1672     sys_select_h
1673     sys_soundcard_h
1674     sys_time_h
1675     sys_un_h
1676     sys_videoio_h
1677     termios_h
1678     udplite_h
1679     unistd_h
1680     windows_h
1681     winsock2_h
1682 "
1683
1684 INTRINSICS_LIST="
1685     intrinsics_neon
1686 "
1687
1688 MATH_FUNCS="
1689     atanf
1690     atan2f
1691     cbrt
1692     cbrtf
1693     cosf
1694     exp2
1695     exp2f
1696     expf
1697     isinf
1698     isnan
1699     ldexpf
1700     llrint
1701     llrintf
1702     log2
1703     log2f
1704     log10f
1705     lrint
1706     lrintf
1707     powf
1708     rint
1709     round
1710     roundf
1711     sinf
1712     trunc
1713     truncf
1714 "
1715
1716 SYSTEM_FUNCS="
1717     access
1718     aligned_malloc
1719     clock_gettime
1720     closesocket
1721     CommandLineToArgvW
1722     CoTaskMemFree
1723     CryptGenRandom
1724     dlopen
1725     fcntl
1726     flt_lim
1727     fork
1728     getaddrinfo
1729     gethrtime
1730     getopt
1731     GetProcessAffinityMask
1732     GetProcessMemoryInfo
1733     GetProcessTimes
1734     getrusage
1735     getservbyport
1736     GetSystemTimeAsFileTime
1737     gettimeofday
1738     glob
1739     glXGetProcAddress
1740     gmtime_r
1741     inet_aton
1742     isatty
1743     jack_port_get_latency_range
1744     kbhit
1745     localtime_r
1746     lzo1x_999_compress
1747     mach_absolute_time
1748     MapViewOfFile
1749     memalign
1750     mkstemp
1751     mmap
1752     mprotect
1753     nanosleep
1754     PeekNamedPipe
1755     posix_memalign
1756     pthread_cancel
1757     sched_getaffinity
1758     SetConsoleTextAttribute
1759     setmode
1760     setrlimit
1761     Sleep
1762     strerror_r
1763     sysconf
1764     sysctl
1765     usleep
1766     VirtualAlloc
1767     wglGetProcAddress
1768 "
1769
1770 TOOLCHAIN_FEATURES="
1771     as_dn_directive
1772     as_func
1773     as_object_arch
1774     asm_mod_q
1775     attribute_may_alias
1776     attribute_packed
1777     ebp_available
1778     ebx_available
1779     gnu_as
1780     gnu_windres
1781     ibm_asm
1782     inline_asm_labels
1783     inline_asm_nonlocal_labels
1784     inline_asm_direct_symbol_refs
1785     pragma_deprecated
1786     rsync_contimeout
1787     symver_asm_label
1788     symver_gnu_asm
1789     vfp_args
1790     xform_asm
1791     xmm_clobbers
1792 "
1793
1794 TYPES_LIST="
1795     CONDITION_VARIABLE_Ptr
1796     DXVA_PicParams_HEVC
1797     socklen_t
1798     struct_addrinfo
1799     struct_group_source_req
1800     struct_ip_mreq_source
1801     struct_ipv6_mreq
1802     struct_pollfd
1803     struct_rusage_ru_maxrss
1804     struct_sctp_event_subscribe
1805     struct_sockaddr_in6
1806     struct_sockaddr_sa_len
1807     struct_sockaddr_storage
1808     struct_stat_st_mtim_tv_nsec
1809     struct_v4l2_frmivalenum_discrete
1810 "
1811
1812 HAVE_LIST="
1813     $ARCH_EXT_LIST
1814     $(add_suffix _external $ARCH_EXT_LIST)
1815     $(add_suffix _inline   $ARCH_EXT_LIST)
1816     $ARCH_FEATURES
1817     $ATOMICS_LIST
1818     $BUILTIN_LIST
1819     $HAVE_LIST_CMDLINE
1820     $HAVE_LIST_PUB
1821     $HEADERS_LIST
1822     $INTRINSICS_LIST
1823     $MATH_FUNCS
1824     $SYSTEM_FUNCS
1825     $THREADS_LIST
1826     $TOOLCHAIN_FEATURES
1827     $TYPES_LIST
1828     atomics_native
1829     dos_paths
1830     dxva2api_cobj
1831     dxva2_lib
1832     libc_msvcrt
1833     libdc1394_1
1834     libdc1394_2
1835     makeinfo
1836     makeinfo_html
1837     perl
1838     pod2man
1839     sdl
1840     section_data_rel_ro
1841     texi2html
1842     threads
1843     vaapi_x11
1844     vdpau_x11
1845     xlib
1846 "
1847
1848 # options emitted with CONFIG_ prefix but not available on the command line
1849 CONFIG_EXTRA="
1850     aandcttables
1851     ac3dsp
1852     audio_frame_queue
1853     audiodsp
1854     blockdsp
1855     bswapdsp
1856     cabac
1857     dvprofile
1858     exif
1859     faandct
1860     faanidct
1861     fdctdsp
1862     fmtconvert
1863     frame_thread_encoder
1864     gcrypt
1865     golomb
1866     gplv3
1867     h263dsp
1868     h264chroma
1869     h264dsp
1870     h264pred
1871     h264qpel
1872     hpeldsp
1873     huffman
1874     huffyuvdsp
1875     huffyuvencdsp
1876     idctdsp
1877     iirfilter
1878     imdct15
1879     intrax8
1880     lgplv3
1881     llauddsp
1882     llviddsp
1883     lpc
1884     me_cmp
1885     mpeg_er
1886     mpegaudio
1887     mpegaudiodsp
1888     mpegvideo
1889     mpegvideoenc
1890     nettle
1891     pixblockdsp
1892     qpeldsp
1893     qsv
1894     rangecoder
1895     riffdec
1896     riffenc
1897     rtpdec
1898     rtpenc_chain
1899     sinewin
1900     startcode
1901     tpeldsp
1902     videodsp
1903     vp3dsp
1904     wma_freqs
1905 "
1906
1907 CMDLINE_SELECT="
1908     $ARCH_EXT_LIST
1909     $CONFIG_LIST
1910     $HAVE_LIST_CMDLINE
1911     $THREADS_LIST
1912     asm
1913     cross_compile
1914     debug
1915     extra_warnings
1916     logging
1917     lto
1918     optimizations
1919     rpath
1920     stripping
1921 "
1922
1923 PATHS_LIST="
1924     bindir
1925     datadir
1926     docdir
1927     incdir
1928     libdir
1929     mandir
1930     prefix
1931     shlibdir
1932 "
1933
1934 CMDLINE_SET="
1935     $PATHS_LIST
1936     ar
1937     arch
1938     as
1939     assert_level
1940     build_suffix
1941     cc
1942     cpu
1943     cross_prefix
1944     cxx
1945     dep_cc
1946     doxygen
1947     extra_version
1948     gas
1949     host_cc
1950     host_cflags
1951     host_ld
1952     host_ldflags
1953     host_libs
1954     host_os
1955     install
1956     ld
1957     logfile
1958     malloc_prefix
1959     nm
1960     optflags
1961     pkg_config
1962     pkg_config_flags
1963     progs_suffix
1964     random_seed
1965     ranlib
1966     samples
1967     strip
1968     sws_max_filter_size
1969     sysinclude
1970     sysroot
1971     target_exec
1972     target_os
1973     target_path
1974     target_samples
1975     tempprefix
1976     toolchain
1977     valgrind
1978     yasmexe
1979 "
1980
1981 CMDLINE_APPEND="
1982     extra_cflags
1983     extra_cxxflags
1984     host_cppflags
1985 "
1986
1987 # code dependency declarations
1988
1989 # architecture extensions
1990
1991 armv5te_deps="arm"
1992 armv6_deps="arm"
1993 armv6t2_deps="arm"
1994 armv8_deps="aarch64"
1995 neon_deps_any="aarch64 arm"
1996 intrinsics_neon_deps="neon"
1997 vfp_deps_any="aarch64 arm"
1998 vfpv3_deps="vfp"
1999 setend_deps="arm"
2000
2001 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2002
2003 mipsfpu_deps="mips"
2004 mipsdspr1_deps="mips"
2005 mipsdspr2_deps="mips"
2006
2007 altivec_deps="ppc"
2008 ppc4xx_deps="ppc"
2009 vsx_deps="ppc"
2010
2011 cpunop_deps="i686"
2012 x86_64_select="i686"
2013 x86_64_suggest="fast_cmov"
2014
2015 amd3dnow_deps="mmx"
2016 amd3dnowext_deps="amd3dnow"
2017 i686_deps="x86"
2018 mmx_deps="x86"
2019 mmxext_deps="mmx"
2020 sse_deps="mmxext"
2021 sse2_deps="sse"
2022 sse3_deps="sse2"
2023 ssse3_deps="sse3"
2024 sse4_deps="ssse3"
2025 sse42_deps="sse4"
2026 avx_deps="sse42"
2027 xop_deps="avx"
2028 fma3_deps="avx"
2029 fma4_deps="avx"
2030 avx2_deps="avx"
2031
2032 mmx_external_deps="yasm"
2033 mmx_inline_deps="inline_asm"
2034 mmx_suggest="mmx_external mmx_inline"
2035
2036 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2037     eval dep=\$${ext}_deps
2038     eval ${ext}_external_deps='"${dep}_external"'
2039     eval ${ext}_inline_deps='"${dep}_inline"'
2040     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2041 done
2042
2043 aligned_stack_if_any="aarch64 ppc x86"
2044 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2045 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2046 fast_unaligned_if_any="aarch64 ppc x86"
2047 simd_align_16_if_any="altivec neon sse"
2048
2049 # system capabilities
2050
2051 symver_if_any="symver_asm_label symver_gnu_asm"
2052
2053 # threading support
2054 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2055 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2056 atomics_win32_if="MemoryBarrier"
2057 atomics_native_if_any="$ATOMICS_LIST"
2058 w32threads_deps="atomics_native"
2059 threads_if_any="$THREADS_LIST"
2060
2061 # subsystems
2062 dct_select="rdft"
2063 error_resilience_select="me_cmp"
2064 faandct_deps="faan fdctdsp"
2065 faanidct_deps="faan idctdsp"
2066 frame_thread_encoder_deps="encoders threads"
2067 intrax8_select="error_resilience"
2068 mdct_select="fft"
2069 rdft_select="fft"
2070 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2071 mpeg_er_select="error_resilience"
2072 mpegaudio_select="mpegaudiodsp"
2073 mpegaudiodsp_select="dct"
2074 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp videodsp"
2075 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2076
2077 # decoders / encoders
2078 aac_decoder_select="imdct15 mdct sinewin"
2079 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
2080 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2081 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2082 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2083 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2084 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2085 aic_decoder_select="golomb idctdsp"
2086 alac_encoder_select="lpc"
2087 als_decoder_select="bswapdsp"
2088 amrnb_decoder_select="lsp"
2089 amrwb_decoder_select="lsp"
2090 amv_decoder_select="sp5x_decoder exif"
2091 amv_encoder_select="aandcttables mpegvideoenc"
2092 ape_decoder_select="bswapdsp llauddsp"
2093 apng_decoder_select="zlib"
2094 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2095 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2096 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2097 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2098 atrac1_decoder_select="mdct sinewin"
2099 atrac3_decoder_select="mdct"
2100 atrac3p_decoder_select="mdct sinewin"
2101 avrn_decoder_select="exif"
2102 bink_decoder_select="blockdsp hpeldsp"
2103 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2104 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2105 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2106 cllc_decoder_select="bswapdsp"
2107 comfortnoise_encoder_select="lpc"
2108 cook_decoder_select="audiodsp mdct sinewin"
2109 cscd_decoder_select="lzo"
2110 cscd_decoder_suggest="zlib"
2111 dca_decoder_select="fmtconvert mdct"
2112 dirac_decoder_select="dwt golomb videodsp mpegvideoenc"
2113 dnxhd_decoder_select="blockdsp idctdsp"
2114 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2115 dvvideo_decoder_select="dvprofile idctdsp"
2116 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2117 dxa_decoder_select="zlib"
2118 eac3_decoder_select="ac3_decoder"
2119 eac3_encoder_select="ac3_encoder"
2120 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2121 eatgq_decoder_select="aandcttables"
2122 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2123 exr_decoder_select="zlib"
2124 ffv1_decoder_select="golomb rangecoder"
2125 ffv1_encoder_select="rangecoder"
2126 ffvhuff_decoder_select="huffyuv_decoder"
2127 ffvhuff_encoder_select="huffyuv_encoder"
2128 fic_decoder_select="golomb"
2129 flac_decoder_select="golomb"
2130 flac_encoder_select="bswapdsp golomb lpc"
2131 flashsv_decoder_select="zlib"
2132 flashsv_encoder_select="zlib"
2133 flashsv2_encoder_select="zlib"
2134 flashsv2_decoder_select="zlib"
2135 flv_decoder_select="h263_decoder"
2136 flv_encoder_select="h263_encoder"
2137 fourxm_decoder_select="blockdsp bswapdsp"
2138 fraps_decoder_select="bswapdsp huffman"
2139 g2m_decoder_select="blockdsp idctdsp zlib"
2140 g729_decoder_select="audiodsp"
2141 h261_decoder_select="mpeg_er mpegvideo"
2142 h261_encoder_select="aandcttables mpegvideoenc"
2143 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2144 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2145 h263i_decoder_select="h263_decoder"
2146 h263p_encoder_select="h263_encoder"
2147 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
2148 h264_decoder_suggest="error_resilience"
2149 h264_qsv_decoder_deps="libmfx"
2150 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsv h264_qsv_hwaccel"
2151 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2152 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2153 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2154 iac_decoder_select="imc_decoder"
2155 imc_decoder_select="bswapdsp fft mdct sinewin"
2156 indeo3_decoder_select="hpeldsp"
2157 interplay_video_decoder_select="hpeldsp"
2158 jpegls_decoder_select="golomb mjpeg_decoder"
2159 jpegls_encoder_select="golomb"
2160 jv_decoder_select="blockdsp"
2161 lagarith_decoder_select="huffyuvdsp"
2162 ljpeg_encoder_select="aandcttables idctdsp"
2163 loco_decoder_select="golomb"
2164 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2165 metasound_decoder_select="lsp mdct sinewin"
2166 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2167 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp"
2168 mjpeg_encoder_select="aandcttables mpegvideoenc"
2169 mjpegb_decoder_select="mjpeg_decoder"
2170 mlp_decoder_select="mlp_parser"
2171 motionpixels_decoder_select="bswapdsp"
2172 mp1_decoder_select="mpegaudio"
2173 mp1float_decoder_select="mpegaudio"
2174 mp2_decoder_select="mpegaudio"
2175 mp2float_decoder_select="mpegaudio"
2176 mp3_decoder_select="mpegaudio"
2177 mp3adu_decoder_select="mpegaudio"
2178 mp3adufloat_decoder_select="mpegaudio"
2179 mp3float_decoder_select="mpegaudio"
2180 mp3on4_decoder_select="mpegaudio"
2181 mp3on4float_decoder_select="mpegaudio"
2182 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2183 mpc8_decoder_select="mpegaudiodsp"
2184 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2185 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2186 mpegvideo_decoder_select="error_resilience mpeg_er mpegvideo"
2187 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2188 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2189 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2190 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2191 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2192 mpeg4_encoder_select="h263_encoder"
2193 msmpeg4v1_decoder_select="h263_decoder"
2194 msmpeg4v2_decoder_select="h263_decoder"
2195 msmpeg4v2_encoder_select="h263_encoder"
2196 msmpeg4v3_decoder_select="h263_decoder"
2197 msmpeg4v3_encoder_select="h263_encoder"
2198 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
2199 mxpeg_decoder_select="mjpeg_decoder"
2200 nellymoser_decoder_select="mdct sinewin"
2201 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2202 nuv_decoder_select="idctdsp lzo"
2203 on2avc_decoder_select="mdct"
2204 opus_decoder_deps="swresample"
2205 opus_decoder_select="imdct15"
2206 png_decoder_select="zlib"
2207 png_encoder_select="huffyuvencdsp zlib"
2208 prores_decoder_select="blockdsp idctdsp"
2209 prores_encoder_select="fdctdsp"
2210 qcelp_decoder_select="lsp"
2211 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2212 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2213 ra_144_decoder_select="audiodsp"
2214 ralf_decoder_select="golomb"
2215 rawvideo_decoder_select="bswapdsp"
2216 rtjpeg_decoder_select="me_cmp"
2217 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2218 rv10_encoder_select="h263_encoder"
2219 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2220 rv20_encoder_select="h263_encoder"
2221 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2222 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2223 shorten_decoder_select="golomb"
2224 sipr_decoder_select="lsp"
2225 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2226 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2227 sonic_decoder_select="golomb rangecoder"
2228 sonic_encoder_select="golomb rangecoder"
2229 sonic_ls_encoder_select="golomb rangecoder"
2230 sp5x_decoder_select="mjpeg_decoder"
2231 svq1_decoder_select="hpeldsp"
2232 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2233 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2234 svq3_decoder_suggest="zlib"
2235 tak_decoder_select="audiodsp"
2236 tdsc_decoder_select="zlib mjpeg_decoder"
2237 theora_decoder_select="vp3_decoder"
2238 thp_decoder_select="mjpeg_decoder"
2239 tiff_decoder_suggest="zlib lzma"
2240 tiff_encoder_suggest="zlib"
2241 truehd_decoder_select="mlp_parser"
2242 truemotion2_decoder_select="bswapdsp"
2243 truespeech_decoder_select="bswapdsp"
2244 tscc_decoder_select="zlib"
2245 twinvq_decoder_select="mdct lsp sinewin"
2246 utvideo_decoder_select="bswapdsp"
2247 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2248 vble_decoder_select="huffyuvdsp"
2249 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
2250 vc1image_decoder_select="vc1_decoder"
2251 vorbis_decoder_select="mdct"
2252 vorbis_encoder_select="mdct"
2253 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2254 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2255 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2256 vp6a_decoder_select="vp6_decoder"
2257 vp6f_decoder_select="vp6_decoder"
2258 vp7_decoder_select="h264pred videodsp"
2259 vp8_decoder_select="h264pred videodsp"
2260 vp9_decoder_select="videodsp vp9_parser"
2261 webp_decoder_select="vp8_decoder"
2262 wmalossless_decoder_select="llauddsp"
2263 wmapro_decoder_select="mdct sinewin wma_freqs"
2264 wmav1_decoder_select="mdct sinewin wma_freqs"
2265 wmav1_encoder_select="mdct sinewin wma_freqs"
2266 wmav2_decoder_select="mdct sinewin wma_freqs"
2267 wmav2_encoder_select="mdct sinewin wma_freqs"
2268 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2269 wmv1_decoder_select="h263_decoder"
2270 wmv1_encoder_select="h263_encoder"
2271 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
2272 wmv2_encoder_select="h263_encoder"
2273 wmv3_decoder_select="vc1_decoder"
2274 wmv3image_decoder_select="wmv3_decoder"
2275 zerocodec_decoder_select="zlib"
2276 zlib_decoder_select="zlib"
2277 zlib_encoder_select="zlib"
2278 zmbv_decoder_select="zlib"
2279 zmbv_encoder_select="zlib"
2280
2281 # hardware accelerators
2282 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2283 dxva2_deps="dxva2api_h"
2284 vaapi_deps="va_va_h"
2285 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2286 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2287 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2288 xvmc_deps="X11_extensions_XvMClib_h"
2289
2290 h263_vaapi_hwaccel_deps="vaapi"
2291 h263_vaapi_hwaccel_select="h263_decoder"
2292 h263_vdpau_hwaccel_deps="vdpau"
2293 h263_vdpau_hwaccel_select="h263_decoder"
2294 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2295 h264_dxva2_hwaccel_deps="dxva2"
2296 h264_dxva2_hwaccel_select="h264_decoder"
2297 h264_qsv_hwaccel_deps="libmfx"
2298 h264_vaapi_hwaccel_deps="vaapi"
2299 h264_vaapi_hwaccel_select="h264_decoder"
2300 h264_vda_decoder_deps="vda"
2301 h264_vda_decoder_select="h264_decoder"
2302 h264_vda_hwaccel_deps="vda"
2303 h264_vda_hwaccel_select="h264_decoder"
2304 h264_vda_old_hwaccel_deps="vda"
2305 h264_vda_old_hwaccel_select="h264_decoder"
2306 h264_vdpau_decoder_deps="vdpau"
2307 h264_vdpau_decoder_select="h264_decoder"
2308 h264_vdpau_hwaccel_deps="vdpau"
2309 h264_vdpau_hwaccel_select="h264_decoder"
2310 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2311 hevc_dxva2_hwaccel_select="hevc_decoder"
2312 mpeg_vdpau_decoder_deps="vdpau"
2313 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2314 mpeg_xvmc_hwaccel_deps="xvmc"
2315 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2316 mpeg1_vdpau_decoder_deps="vdpau"
2317 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2318 mpeg1_vdpau_hwaccel_deps="vdpau"
2319 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2320 mpeg1_xvmc_hwaccel_deps="xvmc"
2321 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2322 mpeg2_crystalhd_decoder_select="crystalhd"
2323 mpeg2_dxva2_hwaccel_deps="dxva2"
2324 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2325 mpeg2_vaapi_hwaccel_deps="vaapi"
2326 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2327 mpeg2_vdpau_hwaccel_deps="vdpau"
2328 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2329 mpeg2_xvmc_hwaccel_deps="xvmc"
2330 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2331 mpeg4_crystalhd_decoder_select="crystalhd"
2332 mpeg4_vaapi_hwaccel_deps="vaapi"
2333 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2334 mpeg4_vdpau_decoder_deps="vdpau"
2335 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2336 mpeg4_vdpau_hwaccel_deps="vdpau"
2337 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2338 msmpeg4_crystalhd_decoder_select="crystalhd"
2339 vc1_crystalhd_decoder_select="crystalhd"
2340 vc1_dxva2_hwaccel_deps="dxva2"
2341 vc1_dxva2_hwaccel_select="vc1_decoder"
2342 vc1_vaapi_hwaccel_deps="vaapi"
2343 vc1_vaapi_hwaccel_select="vc1_decoder"
2344 vc1_vdpau_decoder_deps="vdpau"
2345 vc1_vdpau_decoder_select="vc1_decoder"
2346 vc1_vdpau_hwaccel_deps="vdpau"
2347 vc1_vdpau_hwaccel_select="vc1_decoder"
2348 wmv3_crystalhd_decoder_select="crystalhd"
2349 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2350 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2351 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2352 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2353
2354 # parsers
2355 h264_parser_select="h264_decoder"
2356 hevc_parser_select="hevc_decoder"
2357 mpegvideo_parser_select="mpegvideo"
2358 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2359 vc1_parser_select="mpegvideo startcode vc1_decoder"
2360
2361 # external libraries
2362 libaacplus_encoder_deps="libaacplus"
2363 libcelt_decoder_deps="libcelt"
2364 libdcadec_decoder_deps="libdcadec"
2365 libfaac_encoder_deps="libfaac"
2366 libfaac_encoder_select="audio_frame_queue"
2367 libfdk_aac_decoder_deps="libfdk_aac"
2368 libfdk_aac_encoder_deps="libfdk_aac"
2369 libfdk_aac_encoder_select="audio_frame_queue"
2370 libgme_demuxer_deps="libgme"
2371 libgsm_decoder_deps="libgsm"
2372 libgsm_encoder_deps="libgsm"
2373 libgsm_ms_decoder_deps="libgsm"
2374 libgsm_ms_encoder_deps="libgsm"
2375 libilbc_decoder_deps="libilbc"
2376 libilbc_encoder_deps="libilbc"
2377 libmodplug_demuxer_deps="libmodplug"
2378 libmp3lame_encoder_deps="libmp3lame"
2379 libmp3lame_encoder_select="audio_frame_queue"
2380 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2381 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2382 libopencore_amrnb_encoder_select="audio_frame_queue"
2383 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2384 libopenh264_encoder_deps="libopenh264"
2385 libopenjpeg_decoder_deps="libopenjpeg"
2386 libopenjpeg_encoder_deps="libopenjpeg"
2387 libopus_decoder_deps="libopus"
2388 libopus_encoder_deps="libopus"
2389 libopus_encoder_select="audio_frame_queue"
2390 libquvi_demuxer_deps="libquvi"
2391 libschroedinger_decoder_deps="libschroedinger"
2392 libschroedinger_encoder_deps="libschroedinger"
2393 libshine_encoder_deps="libshine"
2394 libshine_encoder_select="audio_frame_queue"
2395 libspeex_decoder_deps="libspeex"
2396 libspeex_encoder_deps="libspeex"
2397 libspeex_encoder_select="audio_frame_queue"
2398 libstagefright_h264_decoder_deps="libstagefright_h264"
2399 libtheora_encoder_deps="libtheora"
2400 libtwolame_encoder_deps="libtwolame"
2401 libvo_aacenc_encoder_deps="libvo_aacenc"
2402 libvo_aacenc_encoder_select="audio_frame_queue"
2403 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2404 libvorbis_decoder_deps="libvorbis"
2405 libvorbis_encoder_deps="libvorbis"
2406 libvorbis_encoder_select="audio_frame_queue"
2407 libvpx_vp8_decoder_deps="libvpx"
2408 libvpx_vp8_encoder_deps="libvpx"
2409 libvpx_vp9_decoder_deps="libvpx"
2410 libvpx_vp9_encoder_deps="libvpx"
2411 libwavpack_encoder_deps="libwavpack"
2412 libwebp_encoder_deps="libwebp"
2413 libx264_encoder_deps="libx264"
2414 libx264rgb_encoder_deps="libx264"
2415 libx264rgb_encoder_select="libx264_encoder"
2416 libx265_encoder_deps="libx265"
2417 libxavs_encoder_deps="libxavs"
2418 libxvid_encoder_deps="libxvid"
2419 libutvideo_decoder_deps="libutvideo"
2420 libutvideo_encoder_deps="libutvideo"
2421 libzvbi_teletext_decoder_deps="libzvbi"
2422 nvenc_encoder_deps="nvenc"
2423 nvenc_h265_encoder_deps="nvenc"
2424
2425 # demuxers / muxers
2426 ac3_demuxer_select="ac3_parser"
2427 asf_demuxer_select="riffdec"
2428 asf_muxer_select="riffenc"
2429 asf_stream_muxer_select="asf_muxer"
2430 avi_demuxer_select="riffdec exif"
2431 avi_muxer_select="riffenc"
2432 avisynth_demuxer_deps="avisynth"
2433 avisynth_demuxer_select="riffdec"
2434 caf_demuxer_select="riffdec"
2435 dash_muxer_select="mp4_muxer"
2436 dirac_demuxer_select="dirac_parser"
2437 dts_demuxer_select="dca_parser"
2438 dtshd_demuxer_select="dca_parser"
2439 dv_demuxer_select="dvprofile"
2440 dv_muxer_select="dvprofile"
2441 dxa_demuxer_select="riffdec"
2442 eac3_demuxer_select="ac3_parser"
2443 f4v_muxer_select="mov_muxer"
2444 flac_demuxer_select="flac_parser"
2445 hds_muxer_select="flv_muxer"
2446 hls_muxer_select="mpegts_muxer"
2447 image2_alias_pix_demuxer_select="image2_demuxer"
2448 image2_brender_pix_demuxer_select="image2_demuxer"
2449 ipod_muxer_select="mov_muxer"
2450 ismv_muxer_select="mov_muxer"
2451 libnut_demuxer_deps="libnut"
2452 libnut_muxer_deps="libnut"
2453 matroska_audio_muxer_select="matroska_muxer"
2454 matroska_demuxer_select="riffdec"
2455 matroska_demuxer_suggest="bzlib lzo zlib"
2456 matroska_muxer_select="riffenc"
2457 mmf_muxer_select="riffenc"
2458 mov_demuxer_select="riffdec"
2459 mov_demuxer_suggest="zlib"
2460 mov_muxer_select="riffenc rtpenc_chain"
2461 mp3_demuxer_select="mpegaudio_parser"
2462 mp4_muxer_select="mov_muxer"
2463 mpegts_muxer_select="adts_muxer latm_muxer"
2464 mpegtsraw_demuxer_select="mpegts_demuxer"
2465 mxf_d10_muxer_select="mxf_muxer"
2466 mxf_opatom_muxer_select="mxf_muxer"
2467 nut_muxer_select="riffenc"
2468 nuv_demuxer_select="riffdec"
2469 oga_muxer_select="ogg_muxer"
2470 ogg_demuxer_select="golomb"
2471 opus_muxer_select="ogg_muxer"
2472 psp_muxer_select="mov_muxer"
2473 rtp_demuxer_select="sdp_demuxer"
2474 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2475 rtsp_demuxer_select="http_protocol rtpdec"
2476 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2477 sap_demuxer_select="sdp_demuxer"
2478 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2479 sdp_demuxer_select="rtpdec"
2480 smoothstreaming_muxer_select="ismv_muxer"
2481 spdif_muxer_select="aac_parser"
2482 spx_muxer_select="ogg_muxer"
2483 tak_demuxer_select="tak_parser"
2484 tg2_muxer_select="mov_muxer"
2485 tgp_muxer_select="mov_muxer"
2486 vobsub_demuxer_select="mpegps_demuxer"
2487 w64_demuxer_select="wav_demuxer"
2488 w64_muxer_select="wav_muxer"
2489 wav_demuxer_select="riffdec"
2490 wav_muxer_select="riffenc"
2491 webm_muxer_select="riffenc"
2492 wtv_demuxer_select="riffdec"
2493 wtv_muxer_select="riffenc"
2494 xmv_demuxer_select="riffdec"
2495 xwma_demuxer_select="riffdec"
2496
2497 # indevs / outdevs
2498 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2499 alsa_outdev_deps="alsa_asoundlib_h"
2500 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2501 avfoundation_indev_select="avfoundation"
2502 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2503 caca_outdev_deps="libcaca"
2504 decklink_outdev_deps="decklink pthreads"
2505 decklink_outdev_extralibs="-lstdc++"
2506 decklink_indev_deps="decklink pthreads"
2507 decklink_indev_extralibs="-lstdc++"
2508 dshow_indev_deps="IBaseFilter"
2509 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32"
2510 dv1394_indev_deps="dv1394"
2511 dv1394_indev_select="dv_demuxer"
2512 fbdev_indev_deps="linux_fb_h"
2513 fbdev_outdev_deps="linux_fb_h"
2514 gdigrab_indev_deps="CreateDIBSection"
2515 gdigrab_indev_extralibs="-lgdi32"
2516 gdigrab_indev_select="bmp_decoder"
2517 iec61883_indev_deps="libiec61883"
2518 jack_indev_deps="jack_jack_h sem_timedwait"
2519 lavfi_indev_deps="avfilter"
2520 libcdio_indev_deps="libcdio"
2521 libdc1394_indev_deps="libdc1394"
2522 libv4l2_indev_deps="libv4l2"
2523 openal_indev_deps="openal"
2524 opengl_outdev_deps="opengl"
2525 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2526 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2527 pulse_indev_deps="libpulse"
2528 pulse_outdev_deps="libpulse"
2529 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2530 qtkit_indev_select="qtkit"
2531 sdl_outdev_deps="sdl"
2532 sndio_indev_deps="sndio_h"
2533 sndio_outdev_deps="sndio_h"
2534 v4l_indev_deps="linux_videodev_h"
2535 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2536 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2537 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2538 vfwcap_indev_extralibs="-lavicap32"
2539 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2540 xv_outdev_extralibs="-lXv -lX11 -lXext"
2541 x11grab_indev_deps="x11grab"
2542 x11grab_xcb_indev_deps="libxcb"
2543
2544 # protocols
2545 bluray_protocol_deps="libbluray"
2546 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2547 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2548 ffrtmpcrypt_protocol_select="tcp_protocol"
2549 ffrtmphttp_protocol_deps="!librtmp_protocol"
2550 ffrtmphttp_protocol_select="http_protocol"
2551 ftp_protocol_select="tcp_protocol"
2552 gopher_protocol_select="network"
2553 http_protocol_select="tcp_protocol"
2554 httpproxy_protocol_select="tcp_protocol"
2555 https_protocol_select="tls_protocol"
2556 icecast_protocol_select="http_protocol"
2557 librtmp_protocol_deps="librtmp"
2558 librtmpe_protocol_deps="librtmp"
2559 librtmps_protocol_deps="librtmp"
2560 librtmpt_protocol_deps="librtmp"
2561 librtmpte_protocol_deps="librtmp"
2562 libsmbclient_protocol_deps="libsmbclient gplv3"
2563 libssh_protocol_deps="libssh"
2564 mmsh_protocol_select="http_protocol"
2565 mmst_protocol_select="network"
2566 rtmp_protocol_deps="!librtmp_protocol"
2567 rtmp_protocol_select="tcp_protocol"
2568 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2569 rtmps_protocol_deps="!librtmp_protocol"
2570 rtmps_protocol_select="tls_protocol"
2571 rtmpt_protocol_select="ffrtmphttp_protocol"
2572 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2573 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2574 rtp_protocol_select="udp_protocol"
2575 sctp_protocol_deps="struct_sctp_event_subscribe"
2576 sctp_protocol_select="network"
2577 srtp_protocol_select="rtp_protocol"
2578 tcp_protocol_select="network"
2579 tls_protocol_deps_any="openssl gnutls"
2580 tls_protocol_select="tcp_protocol"
2581 udp_protocol_select="network"
2582 udplite_protocol_select="network"
2583 unix_protocol_deps="sys_un_h"
2584 unix_protocol_select="network"
2585
2586 # filters
2587 amovie_filter_deps="avcodec avformat"
2588 aresample_filter_deps="swresample"
2589 ass_filter_deps="libass"
2590 asyncts_filter_deps="avresample"
2591 atempo_filter_deps="avcodec"
2592 atempo_filter_select="rdft"
2593 azmq_filter_deps="libzmq"
2594 blackframe_filter_deps="gpl"
2595 boxblur_filter_deps="gpl"
2596 bs2b_filter_deps="libbs2b"
2597 colormatrix_filter_deps="gpl"
2598 cropdetect_filter_deps="gpl"
2599 delogo_filter_deps="gpl"
2600 deshake_filter_select="pixelutils"
2601 drawtext_filter_deps="libfreetype"
2602 ebur128_filter_deps="gpl"
2603 eq_filter_deps="gpl"
2604 fftfilt_filter_deps="avcodec"
2605 fftfilt_filter_select="rdft"
2606 flite_filter_deps="libflite"
2607 frei0r_filter_deps="frei0r dlopen"
2608 frei0r_src_filter_deps="frei0r dlopen"
2609 fspp_filter_deps="gpl"
2610 geq_filter_deps="gpl"
2611 histeq_filter_deps="gpl"
2612 hqdn3d_filter_deps="gpl"
2613 interlace_filter_deps="gpl"
2614 kerndeint_filter_deps="gpl"
2615 ladspa_filter_deps="ladspa dlopen"
2616 mcdeint_filter_deps="avcodec gpl"
2617 movie_filter_deps="avcodec avformat"
2618 mpdecimate_filter_deps="gpl"
2619 mpdecimate_filter_select="pixelutils"
2620 mptestsrc_filter_deps="gpl"
2621 negate_filter_deps="lut_filter"
2622 perspective_filter_deps="gpl"
2623 pp7_filter_deps="gpl"
2624 ocv_filter_deps="libopencv"
2625 owdenoise_filter_deps="gpl"
2626 pan_filter_deps="swresample"
2627 phase_filter_deps="gpl"
2628 pp_filter_deps="gpl postproc"
2629 pullup_filter_deps="gpl"
2630 removelogo_filter_deps="avcodec avformat swscale"
2631 repeatfields_filter_deps="gpl"
2632 resample_filter_deps="avresample"
2633 sab_filter_deps="gpl swscale"
2634 scale_filter_deps="swscale"
2635 select_filter_select="pixelutils"
2636 smartblur_filter_deps="gpl swscale"
2637 showspectrum_filter_deps="avcodec"
2638 showspectrum_filter_select="rdft"
2639 spp_filter_deps="gpl avcodec"
2640 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2641 stereo3d_filter_deps="gpl"
2642 subtitles_filter_deps="avformat avcodec libass"
2643 super2xsai_filter_deps="gpl"
2644 tinterlace_filter_deps="gpl"
2645 vidstabdetect_filter_deps="libvidstab"
2646 vidstabtransform_filter_deps="libvidstab"
2647 pixfmts_super2xsai_test_deps="super2xsai_filter"
2648 tinterlace_merge_test_deps="tinterlace_filter"
2649 tinterlace_pad_test_deps="tinterlace_filter"
2650 uspp_filter_deps="gpl avcodec"
2651 zmq_filter_deps="libzmq"
2652 zoompan_filter_deps="swscale"
2653
2654 # examples
2655 avio_reading="avformat avcodec avutil"
2656 avcodec_example_deps="avcodec avutil"
2657 decoding_encoding_example_deps="avcodec avformat avutil"
2658 demuxing_decoding_example_deps="avcodec avformat avutil"
2659 extract_mvs_example_deps="avcodec avformat avutil"
2660 filter_audio_example_deps="avfilter avutil"
2661 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2662 filtering_video_example_deps="avfilter avcodec avformat avutil"
2663 metadata_example_deps="avformat avutil"
2664 muxing_example_deps="avcodec avformat avutil swscale"
2665 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2666 remuxing_example_deps="avcodec avformat avutil"
2667 resampling_audio_example_deps="avutil swresample"
2668 scaling_video_example_deps="avutil swscale"
2669 transcode_aac_example_deps="avcodec avformat swresample"
2670 transcoding_example_deps="avfilter avcodec avformat avutil"
2671
2672 # libraries, in linking order
2673 avcodec_deps="avutil"
2674 avdevice_deps="avformat avcodec avutil"
2675 avfilter_deps="avutil"
2676 avformat_deps="avcodec avutil"
2677 avresample_deps="avutil"
2678 postproc_deps="avutil gpl"
2679 swresample_deps="avutil"
2680 swscale_deps="avutil"
2681
2682 # programs
2683 ffmpeg_deps="avcodec avfilter avformat swresample"
2684 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2685                null_filter
2686                setpts_filter trim_filter"
2687 ffplay_deps="avcodec avformat swscale swresample sdl"
2688 ffplay_libs='$sdl_libs'
2689 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2690 ffprobe_deps="avcodec avformat"
2691 ffserver_deps="avformat fork sarestart"
2692 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2693
2694 # documentation
2695 podpages_deps="perl"
2696 manpages_deps="perl pod2man"
2697 htmlpages_deps="perl"
2698 htmlpages_deps_any="makeinfo_html texi2html"
2699 txtpages_deps="perl makeinfo"
2700 doc_deps_any="manpages htmlpages podpages txtpages"
2701
2702 # default parameters
2703
2704 logfile="config.log"
2705
2706 # installation paths
2707 prefix_default="/usr/local"
2708 bindir_default='${prefix}/bin'
2709 datadir_default='${prefix}/share/ffmpeg'
2710 docdir_default='${prefix}/share/doc/ffmpeg'
2711 incdir_default='${prefix}/include'
2712 libdir_default='${prefix}/lib'
2713 mandir_default='${prefix}/share/man'
2714
2715 # toolchain
2716 ar_default="ar"
2717 cc_default="gcc"
2718 cxx_default="g++"
2719 host_cc_default="gcc"
2720 cp_f="cp -f"
2721 doxygen_default="doxygen"
2722 install="install"
2723 ln_s="ln -s -f"
2724 nm_default="nm -g"
2725 objformat="elf"
2726 pkg_config_default=pkg-config
2727 if ranlib 2>&1 | grep -q "\-D "; then
2728     ranlib_default="ranlib -D"
2729 else
2730     ranlib_default="ranlib"
2731 fi
2732 strip_default="strip"
2733 yasmexe_default="yasm"
2734 windres_default="windres"
2735
2736 # OS
2737 target_os_default=$(tolower $(uname -s))
2738 host_os=$target_os_default
2739
2740 # machine
2741 if test "$target_os_default" = aix; then
2742     arch_default=$(uname -p)
2743     strip_default="strip -X32_64"
2744 else
2745     arch_default=$(uname -m)
2746 fi
2747 cpu="generic"
2748 intrinsics="none"
2749
2750 # configurable options
2751 enable $PROGRAM_LIST
2752 enable $DOCUMENT_LIST
2753 enable $EXAMPLE_LIST
2754 enable $(filter_out avresample $LIBRARY_LIST)
2755 enable stripping
2756
2757 enable asm
2758 enable debug
2759 enable doc
2760 enable faan faandct faanidct
2761 enable optimizations
2762 enable runtime_cpudetect
2763 enable safe_bitstream_reader
2764 enable static
2765 enable swscale_alpha
2766
2767 sws_max_filter_size_default=256
2768 set_default sws_max_filter_size
2769
2770 # Enable hwaccels by default.
2771 enable dxva2 vaapi vda vdpau xvmc
2772 enable xlib
2773
2774 # build settings
2775 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2776 LIBPREF="lib"
2777 LIBSUF=".a"
2778 FULLNAME='$(NAME)$(BUILDSUF)'
2779 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2780 SLIBPREF="lib"
2781 SLIBSUF=".so"
2782 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2783 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2784 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2785 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2786 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2787 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2788
2789 asflags_filter=echo
2790 cflags_filter=echo
2791 ldflags_filter=echo
2792
2793 AS_C='-c'
2794 AS_O='-o $@'
2795 CC_C='-c'
2796 CC_E='-E -o $@'
2797 CC_O='-o $@'
2798 CXX_C='-c'
2799 CXX_O='-o $@'
2800 LD_O='-o $@'
2801 LD_LIB='-l%'
2802 LD_PATH='-L'
2803 HOSTCC_C='-c'
2804 HOSTCC_E='-E -o $@'
2805 HOSTCC_O='-o $@'
2806 HOSTLD_O='-o $@'
2807
2808 host_libs='-lm'
2809 host_cflags_filter=echo
2810 host_ldflags_filter=echo
2811
2812 target_path='$(CURDIR)'
2813
2814 # since the object filename is not given with the -MM flag, the compiler
2815 # is only able to print the basename, and we must add the path ourselves
2816 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2817 DEPFLAGS='-MM'
2818
2819 # find source path
2820 if test -f configure; then
2821     source_path=.
2822 else
2823     source_path=$(cd $(dirname "$0"); pwd)
2824     echo "$source_path" | grep -q '[[:blank:]]' &&
2825         die "Out of tree builds are impossible with whitespace in source path."
2826     test -e "$source_path/config.h" &&
2827         die "Out of tree builds are impossible with config.h in source dir."
2828 fi
2829
2830 for v in "$@"; do
2831     r=${v#*=}
2832     l=${v%"$r"}
2833     r=$(sh_quote "$r")
2834     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2835 done
2836
2837 find_things(){
2838     thing=$1
2839     pattern=$2
2840     file=$source_path/$3
2841     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2842 }
2843
2844 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2845 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2846 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2847 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2848 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2849 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2850 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2851 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2852 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2853 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2854 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2855
2856 ALL_COMPONENTS="
2857     $BSF_LIST
2858     $DECODER_LIST
2859     $DEMUXER_LIST
2860     $ENCODER_LIST
2861     $FILTER_LIST
2862     $HWACCEL_LIST
2863     $INDEV_LIST
2864     $MUXER_LIST
2865     $OUTDEV_LIST
2866     $PARSER_LIST
2867     $PROTOCOL_LIST
2868 "
2869
2870 for n in $COMPONENT_LIST; do
2871     v=$(toupper ${n%s})_LIST
2872     eval enable \$$v
2873     eval ${n}_if_any="\$$v"
2874 done
2875
2876 enable $ARCH_EXT_LIST
2877
2878 die_unknown(){
2879     echo "Unknown option \"$1\"."
2880     echo "See $0 --help for available options."
2881     exit 1
2882 }
2883
2884 print_3_columns() {
2885     cat | tr ' ' '\n' | sort | pr -r -3 -t
2886 }
2887
2888 show_list() {
2889     suffix=_$1
2890     shift
2891     echo $* | sed s/$suffix//g | print_3_columns
2892     exit 0
2893 }
2894
2895 rand_list(){
2896     IFS=', '
2897     set -- $*
2898     unset IFS
2899     for thing; do
2900         comp=${thing%:*}
2901         prob=${thing#$comp}
2902         prob=${prob#:}
2903         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2904         echo "prob ${prob:-0.5}"
2905         printf '%s\n' $comp
2906     done
2907 }
2908
2909 do_random(){
2910     action=$1
2911     shift
2912     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2913     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2914 }
2915
2916 for opt do
2917     optval="${opt#*=}"
2918     case "$opt" in
2919         --extra-ldflags=*)
2920             add_ldflags $optval
2921         ;;
2922         --extra-ldexeflags=*)
2923             add_ldexeflags $optval
2924         ;;
2925         --extra-libs=*)
2926             add_extralibs $optval
2927         ;;
2928         --disable-devices)
2929             disable $INDEV_LIST $OUTDEV_LIST
2930         ;;
2931         --enable-debug=*)
2932             debuglevel="$optval"
2933         ;;
2934         --disable-programs)
2935             disable $PROGRAM_LIST
2936         ;;
2937         --disable-everything)
2938             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2939         ;;
2940         --disable-all)
2941             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2942             disable $LIBRARY_LIST $PROGRAM_LIST doc
2943         ;;
2944         --enable-random|--disable-random)
2945             action=${opt%%-random}
2946             do_random ${action#--} $COMPONENT_LIST
2947         ;;
2948         --enable-random=*|--disable-random=*)
2949             action=${opt%%-random=*}
2950             do_random ${action#--} $optval
2951         ;;
2952         --enable-*=*|--disable-*=*)
2953             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2954             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2955             eval list=\$$(toupper $thing)_LIST
2956             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2957             list=$(filter "$name" $list)
2958             [ "$list" = "" ] && warn "Option $opt did not match anything"
2959             $action $list
2960         ;;
2961         --enable-?*|--disable-?*)
2962             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2963             if is_in $option $COMPONENT_LIST; then
2964                 test $action = disable && action=unset
2965                 eval $action \$$(toupper ${option%s})_LIST
2966             elif is_in $option $CMDLINE_SELECT; then
2967                 $action $option
2968             else
2969                 die_unknown $opt
2970             fi
2971         ;;
2972         --list-*)
2973             NAME="${opt#--list-}"
2974             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2975             NAME=${NAME%s}
2976             eval show_list $NAME \$$(toupper $NAME)_LIST
2977         ;;
2978         --help|-h) show_help
2979         ;;
2980         --fatal-warnings) enable fatal_warnings
2981         ;;
2982         *)
2983             optname="${opt%%=*}"
2984             optname="${optname#--}"
2985             optname=$(echo "$optname" | sed 's/-/_/g')
2986             if is_in $optname $CMDLINE_SET; then
2987                 eval $optname='$optval'
2988             elif is_in $optname $CMDLINE_APPEND; then
2989                 append $optname "$optval"
2990             else
2991                 die_unknown $opt
2992             fi
2993         ;;
2994     esac
2995 done
2996
2997 disabled logging && logfile=/dev/null
2998
2999 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3000 set >> $logfile
3001
3002 test -n "$valgrind" && toolchain="valgrind-memcheck"
3003
3004 case "$toolchain" in
3005     clang-asan)
3006         cc_default="clang"
3007         add_cflags  -fsanitize=address
3008         add_ldflags -fsanitize=address
3009     ;;
3010     clang-tsan)
3011         cc_default="clang"
3012         add_cflags  -fsanitize=thread -pie
3013         add_ldflags -fsanitize=thread -pie
3014     ;;
3015     clang-usan)
3016         cc_default="clang"
3017         add_cflags  -fsanitize=undefined
3018         add_ldflags -fsanitize=undefined
3019     ;;
3020     gcc-asan)
3021         cc_default="gcc"
3022         add_cflags  -fsanitize=address
3023         add_ldflags -fsanitize=address
3024     ;;
3025     gcc-tsan)
3026         cc_default="gcc"
3027         add_cflags  -fsanitize=thread -pie -fPIC
3028         add_ldflags -fsanitize=thread -pie -fPIC
3029     ;;
3030     gcc-usan)
3031         cc_default="gcc"
3032         add_cflags  -fsanitize=undefined
3033         add_ldflags -fsanitize=undefined
3034     ;;
3035     valgrind-massif)
3036         target_exec_default=${valgrind:-"valgrind"}
3037         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"
3038     ;;
3039     valgrind-memcheck)
3040         target_exec_default=${valgrind:-"valgrind"}
3041         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3042     ;;
3043     msvc)
3044         # Check whether the current MSVC version needs the C99 converter.
3045         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3046         # support enough of C99 to build ffmpeg. Default to the new
3047         # behaviour if the regexp was unable to match anything, since this
3048         # successfully parses the version number of existing supported
3049         # versions that require the converter (MSVC 2010 and 2012).
3050         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3051         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3052             cc_default="cl"
3053         else
3054             cc_default="c99wrap cl"
3055         fi
3056         ld_default="link"
3057         nm_default="dumpbin -symbols"
3058         ar_default="lib"
3059         target_os_default="win32"
3060         # Use a relative path for TMPDIR. This makes sure all the
3061         # ffconf temp files are written with a relative path, avoiding
3062         # issues with msys/win32 path conversion for MSVC parameters
3063         # such as -Fo<file> or -out:<file>.
3064         TMPDIR=.
3065     ;;
3066     icl)
3067         cc_default="icl"
3068         ld_default="xilink"
3069         nm_default="dumpbin -symbols"
3070         ar_default="xilib"
3071         target_os_default="win32"
3072         TMPDIR=.
3073     ;;
3074     gcov)
3075         add_cflags  -fprofile-arcs -ftest-coverage
3076         add_ldflags -fprofile-arcs -ftest-coverage
3077     ;;
3078     hardened)
3079         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3080         add_cflags   -fno-strict-overflow -fstack-protector-all
3081         add_ldflags  -Wl,-z,relro -Wl,-z,now
3082     ;;
3083     ?*)
3084         die "Unknown toolchain $toolchain"
3085     ;;
3086 esac
3087
3088 test -n "$cross_prefix" && enable cross_compile
3089
3090 if enabled cross_compile; then
3091     test -n "$arch" && test -n "$target_os" ||
3092         die "Must specify target arch and OS when cross-compiling"
3093 fi
3094
3095 ar_default="${cross_prefix}${ar_default}"
3096 cc_default="${cross_prefix}${cc_default}"
3097 cxx_default="${cross_prefix}${cxx_default}"
3098 nm_default="${cross_prefix}${nm_default}"
3099 pkg_config_default="${cross_prefix}${pkg_config_default}"
3100 ranlib_default="${cross_prefix}${ranlib_default}"
3101 strip_default="${cross_prefix}${strip_default}"
3102 windres_default="${cross_prefix}${windres_default}"
3103
3104 sysinclude_default="${sysroot}/usr/include"
3105
3106 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3107     target_exec target_os yasmexe
3108 enabled cross_compile || host_cc_default=$cc
3109 set_default host_cc
3110
3111 pkg_config_fail_message=""
3112 if ! $pkg_config --version >/dev/null 2>&1; then
3113     warn "$pkg_config not found, library detection may fail."
3114     pkg_config=false
3115 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3116     pkg_config_fail_message="
3117 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3118 fi
3119
3120 if test $doxygen != $doxygen_default && \
3121   ! $doxygen --version >/dev/null 2>&1; then
3122     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3123 fi
3124
3125 exesuf() {
3126     case $1 in
3127         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3128     esac
3129 }
3130
3131 EXESUF=$(exesuf $target_os)
3132 HOSTEXESUF=$(exesuf $host_os)
3133
3134 # set temporary file name
3135 : ${TMPDIR:=$TEMPDIR}
3136 : ${TMPDIR:=$TMP}
3137 : ${TMPDIR:=/tmp}
3138
3139 if [ -n "$tempprefix" ] ; then
3140     mktemp(){
3141         echo $tempprefix.${HOSTNAME}.${UID}
3142     }
3143 elif ! check_cmd mktemp -u XXXXXX; then
3144     # simple replacement for missing mktemp
3145     # NOT SAFE FOR GENERAL USE
3146     mktemp(){
3147         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3148     }
3149 fi
3150
3151 tmpfile(){
3152     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3153         (set -C; exec > $tmp) 2>/dev/null ||
3154         die "Unable to create temporary file in $TMPDIR."
3155     append TMPFILES $tmp
3156     eval $1=$tmp
3157 }
3158
3159 trap 'rm -f -- $TMPFILES' EXIT
3160
3161 tmpfile TMPASM .asm
3162 tmpfile TMPC   .c
3163 tmpfile TMPCPP .cpp
3164 tmpfile TMPE   $EXESUF
3165 tmpfile TMPH   .h
3166 tmpfile TMPM   .m
3167 tmpfile TMPO   .o
3168 tmpfile TMPS   .S
3169 tmpfile TMPSH  .sh
3170 tmpfile TMPV   .ver
3171
3172 unset -f mktemp
3173
3174 chmod +x $TMPE
3175
3176 # make sure we can execute files in $TMPDIR
3177 cat > $TMPSH 2>> $logfile <<EOF
3178 #! /bin/sh
3179 EOF
3180 chmod +x $TMPSH >> $logfile 2>&1
3181 if ! $TMPSH >> $logfile 2>&1; then
3182     cat <<EOF
3183 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3184 variable to another directory and make sure that it is not mounted noexec.
3185 EOF
3186     die "Sanity test failed."
3187 fi
3188
3189 armasm_flags(){
3190     for flag; do
3191         case $flag in
3192             # Filter out MSVC cl.exe options from cflags that shouldn't
3193             # be passed to gas-preprocessor
3194             -M[TD]*)                                            ;;
3195             *)                  echo $flag                      ;;
3196         esac
3197    done
3198 }
3199
3200 ccc_flags(){
3201     for flag; do
3202         case $flag in
3203             -std=c99)           echo -c99                       ;;
3204             -mcpu=*)            echo -arch ${flag#*=}           ;;
3205             -mieee)             echo -ieee                      ;;
3206             -O*|-fast)          echo $flag                      ;;
3207             -fno-math-errno)    echo -assume nomath_errno       ;;
3208             -g)                 echo -g3                        ;;
3209             -Wall)              echo -msg_enable level2         ;;
3210             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3211             -Wl,*)              echo $flag                      ;;
3212             -f*|-W*)                                            ;;
3213             *)                  echo $flag                      ;;
3214         esac
3215    done
3216 }
3217
3218 cparser_flags(){
3219     for flag; do
3220         case $flag in
3221             -Wno-switch)             echo -Wno-switch-enum ;;
3222             -Wno-format-zero-length) ;;
3223             -Wdisabled-optimization) ;;
3224             -Wno-pointer-sign)       echo -Wno-other ;;
3225             *)                       echo $flag ;;
3226         esac
3227     done
3228 }
3229
3230 msvc_common_flags(){
3231     for flag; do
3232         case $flag in
3233             # In addition to specifying certain flags under the compiler
3234             # specific filters, they must be specified here as well or else the
3235             # generic catch all at the bottom will print the original flag.
3236             -Wall)                ;;
3237             -std=c99)             ;;
3238             # Common flags
3239             -fomit-frame-pointer) ;;
3240             -g)                   echo -Z7 ;;
3241             -fno-math-errno)      ;;
3242             -fno-common)          ;;
3243             -fno-signed-zeros)    ;;
3244             -fPIC)                ;;
3245             -mthumb)              ;;
3246             -march=*)             ;;
3247             -lz)                  echo zlib.lib ;;
3248             -lavifil32)           echo vfw32.lib ;;
3249             -lavicap32)           echo vfw32.lib user32.lib ;;
3250             -l*)                  echo ${flag#-l}.lib ;;
3251             -L*)                  echo -libpath:${flag#-L} ;;
3252             *)                    echo $flag ;;
3253         esac
3254     done
3255 }
3256
3257 msvc_flags(){
3258     msvc_common_flags "$@"
3259     for flag; do
3260         case $flag in
3261             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3262                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3263                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3264                                        -wd4307 \
3265                                        -wd4273 -wd4554 -wd4701 ;;
3266         esac
3267     done
3268 }
3269
3270 icl_flags(){
3271     msvc_common_flags "$@"
3272     for flag; do
3273         case $flag in
3274             # Despite what Intel's documentation says -Wall, which is supported
3275             # on Windows, does enable remarks so disable them here.
3276             -Wall)                echo $flag -Qdiag-disable:remark ;;
3277             -std=c99)             echo -Qstd=c99 ;;
3278             -flto)                echo -ipo ;;
3279         esac
3280     done
3281 }
3282
3283 icc_flags(){
3284     for flag; do
3285         case $flag in
3286             -flto)                echo -ipo ;;
3287             *)                    echo $flag ;;
3288         esac
3289     done
3290 }
3291
3292 pgi_flags(){
3293     for flag; do
3294         case $flag in
3295             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3296             -fomit-frame-pointer) echo -Mnoframe ;;
3297             -g)                   echo -gopt ;;
3298             *)                    echo $flag ;;
3299         esac
3300     done
3301 }
3302
3303 suncc_flags(){
3304     for flag; do
3305         case $flag in
3306             -march=*|-mcpu=*)
3307                 case "${flag#*=}" in
3308                     native)                   echo -xtarget=native       ;;
3309                     v9|niagara)               echo -xarch=sparc          ;;
3310                     ultrasparc)               echo -xarch=sparcvis       ;;
3311                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3312                     i586|pentium)             echo -xchip=pentium        ;;
3313                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3314                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3315                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3316                     pentium4*)          echo -xtarget=pentium4           ;;
3317                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3318                     *-sse3)             echo -xarch=sse3                 ;;
3319                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3320                     bonnell)                   echo -xarch=ssse3         ;;
3321                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3322                     westmere)                  echo -xtarget=westmere    ;;
3323                     silvermont)                echo -xarch=sse4_2        ;;
3324                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3325                     core-avx*|ivybridge|haswell|broadwell)
3326                                                echo -xarch=avx           ;;
3327                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3328                     btver1)                    echo -xarch=amdsse4a      ;;
3329                     btver2|bdver*)             echo -xarch=avx           ;;
3330                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3331                     k8|opteron|athlon64|athlon-fx)
3332                                                echo -xarch=sse2a         ;;
3333                     athlon*)                   echo -xarch=pentium_proa  ;;
3334                 esac
3335                 ;;
3336             -std=c99)             echo -xc99              ;;
3337             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3338             -fPIC)                echo -KPIC -xcode=pic32 ;;
3339             -W*,*)                echo $flag              ;;
3340             -f*-*|-W*|-mimpure-text)                      ;;
3341             -shared)              echo -G                 ;;
3342             *)                    echo $flag              ;;
3343         esac
3344     done
3345 }
3346
3347 tms470_flags(){
3348     for flag; do
3349         case $flag in
3350             -march=*|-mcpu=*)
3351                 case "${flag#*=}" in
3352                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3353                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3354                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3355                     armv6*|arm11*)          echo -mv=6   ;;
3356                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3357                                             echo -mv=5e  ;;
3358                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3359                 esac
3360                 ;;
3361             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3362             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3363             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3364             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3365             -msoft-float)   echo --float_support=vfplib       ;;
3366             -O[0-3]|-mf=*)  echo $flag                        ;;
3367             -g)             echo -g -mn                       ;;
3368             -pds=*)         echo $flag                        ;;
3369             -D*|-I*)        echo $flag                        ;;
3370             --gcc|--abi=*)  echo $flag                        ;;
3371             -me)            echo $flag                        ;;
3372         esac
3373     done
3374 }
3375
3376 probe_cc(){
3377     pfx=$1
3378     _cc=$2
3379
3380     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3381     unset _ld_o _ldflags _ld_lib _ld_path
3382     unset _depflags _DEPCMD _DEPFLAGS
3383     _flags_filter=echo
3384
3385     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3386         true # no-op to avoid reading stdin in following checks
3387     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3388         _type=llvm_gcc
3389         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3390         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3391         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3392         _cflags_speed='-O3'
3393         _cflags_size='-Os'
3394     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3395         _type=gcc
3396         gcc_version=$($_cc --version | head -n1)
3397         gcc_basever=$($_cc -dumpversion)
3398         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3399         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3400         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3401         if ! $_cc -dumpversion | grep -q '^2\.'; then
3402             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3403         fi
3404         _cflags_speed='-O3'
3405         _cflags_size='-Os'
3406     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3407         _type=icc
3408         _ident=$($_cc --version | head -n1)
3409         _depflags='-MMD'
3410         _cflags_speed='-O3'
3411         _cflags_size='-Os'
3412         _cflags_noopt='-O1'
3413         _flags_filter=icc_flags
3414     elif $_cc -v 2>&1 | grep -q xlc; then
3415         _type=xlc
3416         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3417         _cflags_speed='-O5'
3418         _cflags_size='-O5 -qcompact'
3419     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3420         _type=ccc
3421         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3422         _DEPFLAGS='-M'
3423         _cflags_speed='-fast'
3424         _cflags_size='-O1'
3425         _flags_filter=ccc_flags
3426     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3427         test -d "$sysroot" || die "No valid sysroot specified."
3428         _type=armcc
3429         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3430         armcc_conf="$PWD/armcc.conf"
3431         $_cc --arm_linux_configure                 \
3432              --arm_linux_config_file="$armcc_conf" \
3433              --configure_sysroot="$sysroot"        \
3434              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3435              die "Error creating armcc configuration file."
3436         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3437         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3438         as_default="${cross_prefix}gcc"
3439         _depflags='-MMD'
3440         _cflags_speed='-O3'
3441         _cflags_size='-Os'
3442     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3443         _type=tms470
3444         _ident=$($_cc -version | head -n1 | tr -s ' ')
3445         _flags='--gcc --abi=eabi -me'
3446         _cc_e='-ppl -fe=$@'
3447         _cc_o='-fe=$@'
3448         _depflags='-ppa -ppd=$(@:.o=.d)'
3449         _cflags_speed='-O3 -mf=5'
3450         _cflags_size='-O3 -mf=2'
3451         _flags_filter=tms470_flags
3452     elif $_cc -v 2>&1 | grep -q clang; then
3453         _type=clang
3454         _ident=$($_cc --version | head -n1)
3455         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3456         _cflags_speed='-O3'
3457         _cflags_size='-Os'
3458     elif $_cc -V 2>&1 | grep -q Sun; then
3459         _type=suncc
3460         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3461         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3462         _DEPFLAGS='-xM1 -xc99'
3463         _ldflags='-std=c99'
3464         _cflags_speed='-O5'
3465         _cflags_size='-O5 -xspace'
3466         _flags_filter=suncc_flags
3467     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3468         _type=pathscale
3469         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3470         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3471         _cflags_speed='-O2'
3472         _cflags_size='-Os'
3473         _flags_filter='filter_out -Wdisabled-optimization'
3474     elif $_cc -v 2>&1 | grep -q Open64; then
3475         _type=open64
3476         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3477         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3478         _cflags_speed='-O2'
3479         _cflags_size='-Os'
3480         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3481     elif $_cc -V 2>&1 | grep -q Portland; then
3482         _type=pgi
3483         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3484         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3485         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3486         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3487         _cflags_noopt="-O"
3488         _flags_filter=pgi_flags
3489     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3490         _type=armasm
3491         _ident=$($_cc | head -n1)
3492         # 4509: "This form of conditional instruction is deprecated"
3493         _flags="-nologo -ignore 4509"
3494         _flags_filter=armasm_flags
3495     elif $_cc 2>&1 | grep -q Intel; then
3496         _type=icl
3497         _ident=$($cc 2>&1 | head -n1)
3498         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3499         # Not only is O3 broken on 13.x+ but it is slower on all previous
3500         # versions (tested) as well.
3501         _cflags_speed="-O2"
3502         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3503         if $_cc 2>&1 | grep -q Linker; then
3504             _ld_o='-out:$@'
3505         else
3506             _ld_o='-Fe$@'
3507         fi
3508         _cc_o='-Fo$@'
3509         _cc_e='-P'
3510         _flags_filter=icl_flags
3511         _ld_lib='lib%.a'
3512         _ld_path='-libpath:'
3513         # -Qdiag-error to make icl error when seeing certain unknown arguments
3514         _flags='-nologo -Qdiag-error:4044,10157'
3515         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3516         # with MSVC which enables it by default.
3517         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3518         if [ $pfx = hostcc ]; then
3519             append _cflags -Dsnprintf=_snprintf
3520         fi
3521         disable stripping
3522     elif $_cc 2>&1 | grep -q Microsoft; then
3523         _type=msvc
3524         _ident=$($cc 2>&1 | head -n1)
3525         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3526         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3527         _cflags_speed="-O2"
3528         _cflags_size="-O1"
3529         if $_cc 2>&1 | grep -q Linker; then
3530             _ld_o='-out:$@'
3531         else
3532             _ld_o='-Fe$@'
3533         fi
3534         _cc_o='-Fo$@'
3535         _cc_e='-P -Fi$@'
3536         _flags_filter=msvc_flags
3537         _ld_lib='lib%.a'
3538         _ld_path='-libpath:'
3539         _flags='-nologo'
3540         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3541         if [ $pfx = hostcc ]; then
3542             if [ -z "$cl_major_ver" ] || [ $cl_major_ver -le 18 ]; then
3543                 append _cflags -Dsnprintf=_snprintf
3544             fi
3545         fi
3546         disable stripping
3547     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3548         _type=cparser
3549         _ident=$($_cc --version | head -n1)
3550         _depflags='-MMD'
3551         _cflags_speed='-O4'
3552         _cflags_size='-O2'
3553         _flags_filter=cparser_flags
3554     fi
3555
3556     eval ${pfx}_type=\$_type
3557     eval ${pfx}_ident=\$_ident
3558 }
3559
3560 set_ccvars(){
3561     eval ${1}_C=\${_cc_c-\${${1}_C}}
3562     eval ${1}_E=\${_cc_e-\${${1}_E}}
3563     eval ${1}_O=\${_cc_o-\${${1}_O}}
3564
3565     if [ -n "$_depflags" ]; then
3566         eval ${1}_DEPFLAGS=\$_depflags
3567     else
3568         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3569         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3570         eval DEP${1}FLAGS=\$_flags
3571     fi
3572 }
3573
3574 probe_cc cc "$cc"
3575 cflags_filter=$_flags_filter
3576 cflags_speed=$_cflags_speed
3577 cflags_size=$_cflags_size
3578 cflags_noopt=$_cflags_noopt
3579 add_cflags $_flags $_cflags
3580 cc_ldflags=$_ldflags
3581 set_ccvars CC
3582
3583 probe_cc hostcc "$host_cc"
3584 host_cflags_filter=$_flags_filter
3585 add_host_cflags  $_flags $_cflags
3586 set_ccvars HOSTCC
3587
3588 test -n "$cc_type" && enable $cc_type ||
3589     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3590
3591 : ${as_default:=$cc}
3592 : ${dep_cc_default:=$cc}
3593 : ${ld_default:=$cc}
3594 : ${host_ld_default:=$host_cc}
3595 set_default ar as dep_cc ld host_ld windres
3596
3597 probe_cc as "$as"
3598 asflags_filter=$_flags_filter
3599 add_asflags $_flags $_cflags
3600 set_ccvars AS
3601
3602 probe_cc ld "$ld"
3603 ldflags_filter=$_flags_filter
3604 add_ldflags $_flags $_ldflags
3605 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3606 LD_O=${_ld_o-$LD_O}
3607 LD_LIB=${_ld_lib-$LD_LIB}
3608 LD_PATH=${_ld_path-$LD_PATH}
3609
3610 probe_cc hostld "$host_ld"
3611 host_ldflags_filter=$_flags_filter
3612 add_host_ldflags $_flags $_ldflags
3613 HOSTLD_O=${_ld_o-$HOSTLD_O}
3614
3615 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3616     probe_cc depcc "$dep_cc"
3617     CCDEP=${_DEPCMD:-$DEPCMD}
3618     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3619     DEPCCFLAGS=$_flags
3620 fi
3621
3622 if $ar 2>&1 | grep -q Microsoft; then
3623     arflags="-nologo"
3624     ar_o='-out:$@'
3625 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3626     arflags="rq"
3627     ar_o='$@'
3628 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3629     arflags='-Xany -r -c'
3630     ar_o='$@'
3631 elif $ar 2>&1 | grep -q "\[D\] "; then
3632     arflags="rcD"
3633     ar_o='$@'
3634 else
3635     arflags="rc"
3636     ar_o='$@'
3637 fi
3638
3639 add_cflags $extra_cflags
3640 add_cxxflags $extra_cxxflags
3641 add_asflags $extra_cflags
3642
3643 if test -n "$sysroot"; then
3644     case "$cc_type" in
3645         gcc|llvm_gcc|clang)
3646             add_cppflags --sysroot="$sysroot"
3647             add_ldflags --sysroot="$sysroot"
3648 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3649             add_cppflags -isysroot "$sysroot"
3650             add_ldflags -isysroot "$sysroot"
3651         ;;
3652         tms470)
3653             add_cppflags -I"$sysinclude"
3654             add_ldflags  --sysroot="$sysroot"
3655         ;;
3656     esac
3657 fi
3658
3659 if test "$cpu" = host; then
3660     enabled cross_compile &&
3661         die "--cpu=host makes no sense when cross-compiling."
3662
3663     case "$cc_type" in
3664         gcc|llvm_gcc)
3665             check_native(){
3666                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3667                 sed -n "/cc1.*$1=/{
3668                             s/.*$1=\\([^ ]*\\).*/\\1/
3669                             p
3670                             q
3671                         }" $TMPE
3672             }
3673             cpu=$(check_native -march || check_native -mcpu)
3674         ;;
3675     esac
3676
3677     test "${cpu:-host}" = host &&
3678         die "--cpu=host not supported with compiler $cc"
3679 fi
3680
3681 # Deal with common $arch aliases
3682 case "$arch" in
3683     aarch64|arm64)
3684         arch="aarch64"
3685     ;;
3686     arm*|iPad*|iPhone*)
3687         arch="arm"
3688     ;;
3689     mips*|IP*)
3690         arch="mips"
3691     ;;
3692     parisc*|hppa*)
3693         arch="parisc"
3694     ;;
3695     "Power Macintosh"|ppc*|powerpc*)
3696         arch="ppc"
3697     ;;
3698     s390|s390x)
3699         arch="s390"
3700     ;;
3701     sh4|sh)
3702         arch="sh4"
3703     ;;
3704     sun4u|sparc*)
3705         arch="sparc"
3706     ;;
3707     tilegx|tile-gx)
3708         arch="tilegx"
3709     ;;
3710     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3711         arch="x86"
3712     ;;
3713 esac
3714
3715 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3716 enable $arch
3717
3718 # Add processor-specific flags
3719 if enabled aarch64; then
3720
3721     case $cpu in
3722         armv*)
3723             cpuflags="-march=$cpu"
3724         ;;
3725         *)
3726             cpuflags="-mcpu=$cpu"
3727         ;;
3728     esac
3729
3730 elif enabled alpha; then
3731
3732     cpuflags="-mcpu=$cpu"
3733
3734 elif enabled arm; then
3735
3736     check_arm_arch() {
3737         check_cpp_condition stddef.h \
3738             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3739             $cpuflags
3740     }
3741
3742     probe_arm_arch() {
3743         if   check_arm_arch 4;        then echo armv4;
3744         elif check_arm_arch 4T;       then echo armv4t;
3745         elif check_arm_arch 5;        then echo armv5;
3746         elif check_arm_arch 5E;       then echo armv5e;
3747         elif check_arm_arch 5T;       then echo armv5t;
3748         elif check_arm_arch 5TE;      then echo armv5te;
3749         elif check_arm_arch 5TEJ;     then echo armv5te;
3750         elif check_arm_arch 6;        then echo armv6;
3751         elif check_arm_arch 6J;       then echo armv6j;
3752         elif check_arm_arch 6K;       then echo armv6k;
3753         elif check_arm_arch 6Z;       then echo armv6z;
3754         elif check_arm_arch 6ZK;      then echo armv6zk;
3755         elif check_arm_arch 6T2;      then echo armv6t2;
3756         elif check_arm_arch 7;        then echo armv7;
3757         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3758         elif check_arm_arch 7S;       then echo armv7-a;
3759         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3760         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3761         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3762         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3763         fi
3764     }
3765
3766     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3767
3768     case $cpu in
3769         armv*)
3770             cpuflags="-march=$cpu"
3771             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3772         ;;
3773         *)
3774             cpuflags="-mcpu=$cpu"
3775             case $cpu in
3776                 cortex-a*)                               subarch=armv7a  ;;
3777                 cortex-r*)                               subarch=armv7r  ;;
3778                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3779                 arm11*)                                  subarch=armv6   ;;
3780                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3781                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3782                 *)                             subarch=$(probe_arm_arch) ;;
3783             esac
3784         ;;
3785     esac
3786
3787     case "$subarch" in
3788         armv5t*)    enable fast_clz                ;;
3789         armv[6-8]*)
3790             enable fast_clz
3791             disabled fast_unaligned || enable fast_unaligned
3792             ;;
3793     esac
3794
3795 elif enabled avr32; then
3796
3797     case $cpu in
3798         ap7[02]0[0-2])
3799             subarch="avr32_ap"
3800             cpuflags="-mpart=$cpu"
3801         ;;
3802         ap)
3803             subarch="avr32_ap"
3804             cpuflags="-march=$cpu"
3805         ;;
3806         uc3[ab]*)
3807             subarch="avr32_uc"
3808             cpuflags="-mcpu=$cpu"
3809         ;;
3810         uc)
3811             subarch="avr32_uc"
3812             cpuflags="-march=$cpu"
3813         ;;
3814     esac
3815
3816 elif enabled bfin; then
3817
3818     cpuflags="-mcpu=$cpu"
3819
3820 elif enabled mips; then
3821
3822     cpuflags="-march=$cpu"
3823
3824     case $cpu in
3825         24kc)
3826             disable mipsfpu
3827             disable mipsdspr1
3828             disable mipsdspr2
3829         ;;
3830         24kf*)
3831             disable mipsdspr1
3832             disable mipsdspr2
3833         ;;
3834         24kec|34kc|1004kc)
3835             disable mipsfpu
3836             disable mipsdspr2
3837         ;;
3838         24kef*|34kf*|1004kf*)
3839             disable mipsdspr2
3840         ;;
3841         74kc)
3842             disable mipsfpu
3843         ;;
3844     esac
3845
3846 elif enabled ppc; then
3847
3848     disable ldbrx
3849     disable vsx
3850
3851     case $(tolower $cpu) in
3852         601|ppc601|powerpc601)
3853             cpuflags="-mcpu=601"
3854             disable altivec
3855         ;;
3856         603*|ppc603*|powerpc603*)
3857             cpuflags="-mcpu=603"
3858             disable altivec
3859         ;;
3860         604*|ppc604*|powerpc604*)
3861             cpuflags="-mcpu=604"
3862             disable altivec
3863         ;;
3864         g3|75*|ppc75*|powerpc75*)
3865             cpuflags="-mcpu=750"
3866             disable altivec
3867         ;;
3868         g4|745*|ppc745*|powerpc745*)
3869             cpuflags="-mcpu=7450"
3870         ;;
3871         74*|ppc74*|powerpc74*)
3872             cpuflags="-mcpu=7400"
3873         ;;
3874         g5|970|ppc970|powerpc970)
3875             cpuflags="-mcpu=970"
3876         ;;
3877         power[3-8]*)
3878             cpuflags="-mcpu=$cpu"
3879         ;;
3880         cell)
3881             cpuflags="-mcpu=cell"
3882             enable ldbrx
3883         ;;
3884         e500mc)
3885             cpuflags="-mcpu=e500mc"
3886             disable altivec
3887         ;;
3888         e500v2)
3889             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3890             disable altivec
3891             disable dcbzl
3892         ;;
3893         e500)
3894             cpuflags="-mcpu=8540 -mhard-float"
3895             disable altivec
3896             disable dcbzl
3897         ;;
3898     esac
3899
3900 elif enabled sparc; then
3901
3902     case $cpu in
3903         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3904             cpuflags="-mcpu=$cpu"
3905         ;;
3906         ultrasparc*|niagara[234])
3907             cpuflags="-mcpu=$cpu"
3908         ;;
3909     esac
3910
3911 elif enabled x86; then
3912
3913     case $cpu in
3914         i[345]86|pentium)
3915             cpuflags="-march=$cpu"
3916             disable i686
3917             disable mmx
3918         ;;
3919         # targets that do NOT support nopl and conditional mov (cmov)
3920         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3921             cpuflags="-march=$cpu"
3922             disable i686
3923         ;;
3924         # targets that do support nopl and conditional mov (cmov)
3925         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
3926         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
3927             cpuflags="-march=$cpu"
3928             enable i686
3929             enable fast_cmov
3930         ;;
3931         # targets that do support conditional mov but on which it's slow
3932         pentium4|pentium4m|prescott|nocona)
3933             cpuflags="-march=$cpu"
3934             enable i686
3935             disable fast_cmov
3936         ;;
3937     esac
3938
3939 fi
3940
3941 if [ "$cpu" != generic ]; then
3942     add_cflags  $cpuflags
3943     add_asflags $cpuflags
3944 fi
3945
3946 # compiler sanity check
3947 check_exec <<EOF
3948 int main(void){ return 0; }
3949 EOF
3950 if test "$?" != 0; then
3951     echo "$cc is unable to create an executable file."
3952     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3953         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3954         echo "Only do this if you know what cross compiling means."
3955     fi
3956     die "C compiler test failed."
3957 fi
3958
3959 add_cppflags -D_ISOC99_SOURCE
3960 add_cxxflags -D__STDC_CONSTANT_MACROS
3961 check_cflags -std=c99
3962 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3963 #include <stdlib.h>
3964 EOF
3965 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3966 #include <stdlib.h>
3967 EOF
3968
3969 add_host_cppflags -D_ISOC99_SOURCE
3970 check_host_cflags -std=c99
3971 check_host_cflags -Wall
3972 check_host_cflags -O3
3973
3974 check_64bit(){
3975     arch32=$1
3976     arch64=$2
3977     expr=$3
3978     check_code cc "" "int test[2*($expr) - 1]" &&
3979         subarch=$arch64 || subarch=$arch32
3980 }
3981
3982 case "$arch" in
3983     aarch64|alpha|ia64)
3984         spic=$shared
3985     ;;
3986     mips)
3987         check_64bit mips mips64 '_MIPS_SIM > 1'
3988         spic=$shared
3989     ;;
3990     parisc)
3991         check_64bit parisc parisc64 'sizeof(void *) > 4'
3992         spic=$shared
3993     ;;
3994     ppc)
3995         check_64bit ppc ppc64 'sizeof(void *) > 4'
3996         spic=$shared
3997     ;;
3998     s390)
3999         check_64bit s390 s390x 'sizeof(void *) > 4'
4000         spic=$shared
4001     ;;
4002     sparc)
4003         check_64bit sparc sparc64 'sizeof(void *) > 4'
4004         spic=$shared
4005     ;;
4006     x86)
4007         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4008         # Treat x32 as x64 for now. Note it also needs spic=$shared
4009         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4010             subarch=x86_64
4011         if test "$subarch" = "x86_64"; then
4012             spic=$shared
4013         fi
4014     ;;
4015     ppc)
4016         check_cc <<EOF && subarch="ppc64"
4017         int test[(int)sizeof(char*) - 7];
4018 EOF
4019     ;;
4020 esac
4021
4022 enable $subarch
4023 enabled spic && enable_weak pic
4024
4025 # OS specific
4026 case $target_os in
4027     aix)
4028         SHFLAGS=-shared
4029         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4030         enabled shared && add_ldflags -Wl,-brtl
4031         ;;
4032     android)
4033         disable symver
4034         enable section_data_rel_ro
4035         SLIB_INSTALL_NAME='$(SLIBNAME)'
4036         SLIB_INSTALL_LINKS=
4037         # soname not set on purpose
4038         SHFLAGS=-shared
4039         ;;
4040     haiku)
4041         prefix_default="/boot/common"
4042         network_extralibs="-lnetwork"
4043         host_libs=
4044         ;;
4045     sunos)
4046         SHFLAGS='-shared -Wl,-h,$$(@F)'
4047         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4048         network_extralibs="-lsocket -lnsl"
4049         add_cppflags -D__EXTENSIONS__
4050         # When using suncc to build, the Solaris linker will mark
4051         # an executable with each instruction set encountered by
4052         # the Solaris assembler.  As our libraries contain their own
4053         # guards for processor-specific code, instead suppress
4054         # generation of the HWCAPS ELF section on Solaris x86 only.
4055         enabled_all suncc x86 &&
4056             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4057             add_ldflags -Wl,-M,mapfile
4058         nm_default='nm -P -g'
4059         ;;
4060     netbsd)
4061         disable symver
4062         oss_indev_extralibs="-lossaudio"
4063         oss_outdev_extralibs="-lossaudio"
4064         enabled gcc || check_ldflags -Wl,-zmuldefs
4065         ;;
4066     openbsd|bitrig)
4067         disable symver
4068         SHFLAGS='-shared'
4069         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4070         SLIB_INSTALL_LINKS=
4071         oss_indev_extralibs="-lossaudio"
4072         oss_outdev_extralibs="-lossaudio"
4073         ;;
4074     dragonfly)
4075         disable symver
4076         ;;
4077     freebsd)
4078         ;;
4079     bsd/os)
4080         add_extralibs -lpoll -lgnugetopt
4081         strip="strip -d"
4082         ;;
4083     darwin)
4084         enabled ppc && add_asflags -force_cpusubtype_ALL
4085         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4086         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4087         strip="${strip} -x"
4088         add_ldflags -Wl,-dynamic,-search_paths_first
4089         SLIBSUF=".dylib"
4090         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4091         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4092         objformat="macho"
4093         enabled x86_64 && objformat="macho64"
4094         enabled_any pic shared x86_64 ||
4095             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4096         ;;
4097     mingw32*)
4098         if test $target_os = "mingw32ce"; then
4099             disable network
4100         else
4101             target_os=mingw32
4102         fi
4103         LIBTARGET=i386
4104         if enabled x86_64; then
4105             LIBTARGET="i386:x86-64"
4106         elif enabled arm; then
4107             LIBTARGET=arm-wince
4108         fi
4109         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4110         check_ldflags -Wl,--nxcompat
4111         check_ldflags -Wl,--dynamicbase
4112         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4113         shlibdir_default="$bindir_default"
4114         SLIBPREF=""
4115         SLIBSUF=".dll"
4116         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4117         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4118         dlltool="${cross_prefix}dlltool"
4119         if check_cmd lib.exe -list; then
4120             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4121             if enabled x86_64; then
4122                 LIBTARGET=x64
4123             fi
4124         elif check_cmd $dlltool --version; then
4125             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4126         fi
4127         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4128         SLIB_INSTALL_LINKS=
4129         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4130         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4131         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
4132         objformat="win32"
4133         ranlib=:
4134         enable dos_paths
4135         ;;
4136     win32|win64)
4137         disable symver
4138         if enabled shared; then
4139             # Link to the import library instead of the normal static library
4140             # for shared libs.
4141             LD_LIB='%.lib'
4142             # Cannot build both shared and static libs with MSVC or icl.
4143             disable static
4144         fi
4145         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4146         shlibdir_default="$bindir_default"
4147         SLIBPREF=""
4148         SLIBSUF=".dll"
4149         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4150         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4151         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4152         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4153         SLIB_INSTALL_LINKS=
4154         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4155         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4156         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4157         objformat="win32"
4158         ranlib=:
4159         enable dos_paths
4160         ;;
4161     cygwin*)
4162         target_os=cygwin
4163         shlibdir_default="$bindir_default"
4164         SLIBPREF="cyg"
4165         SLIBSUF=".dll"
4166         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4167         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4168         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4169         SLIB_INSTALL_LINKS=
4170         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4171         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4172         objformat="win32"
4173         enable dos_paths
4174         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4175         ;;
4176     *-dos|freedos|opendos)
4177         network_extralibs="-lsocket"
4178         objformat="coff"
4179         enable dos_paths
4180         add_cppflags -U__STRICT_ANSI__
4181         ;;
4182     linux)
4183         enable dv1394
4184         enable section_data_rel_ro
4185         ;;
4186     irix*)
4187         target_os=irix
4188         ranlib="echo ignoring ranlib"
4189         ;;
4190     os/2*)
4191         strip="lxlite -CS"
4192         ln_s="cp -f"
4193         objformat="aout"
4194         add_cppflags -D_GNU_SOURCE
4195         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4196         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4197         LIBSUF="_s.a"
4198         SLIBPREF=""
4199         SLIBSUF=".dll"
4200         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4201         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4202         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4203             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
4204             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4205             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4206             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4207             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
4208         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4209             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4210         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4211         enable dos_paths
4212         enable_weak os2threads
4213         ;;
4214     gnu/kfreebsd)
4215         add_cppflags -D_BSD_SOURCE
4216         ;;
4217     gnu)
4218         ;;
4219     qnx)
4220         add_cppflags -D_QNX_SOURCE
4221         network_extralibs="-lsocket"
4222         ;;
4223     symbian)
4224         SLIBSUF=".dll"
4225         enable dos_paths
4226         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4227         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4228         add_ldflags -Wl,--target1-abs,--no-undefined \
4229                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4230                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4231         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4232                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4233                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4234         ;;
4235     osf1)
4236         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4237         ;;
4238     minix)
4239         ;;
4240     plan9)
4241         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4242                      -D_REENTRANT_SOURCE        \
4243                      -D_RESEARCH_SOURCE         \
4244                      -DFD_SETSIZE=96            \
4245                      -DHAVE_SOCK_OPTS
4246         add_compat strtod.o strtod=avpriv_strtod
4247         network_extralibs='-lbsd'
4248         exeobjs=compat/plan9/main.o
4249         disable ffserver
4250         cp_f='cp'
4251         ;;
4252     none)
4253         ;;
4254     *)
4255         die "Unknown OS '$target_os'."
4256         ;;
4257 esac
4258
4259 # determine libc flavour
4260
4261 probe_libc(){
4262     pfx=$1
4263     pfx_no_=${pfx%_}
4264     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4265     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4266         eval ${pfx}libc_type=uclibc
4267         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4268     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4269         eval ${pfx}libc_type=glibc
4270         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4271     # MinGW headers can be installed on Cygwin, so check for newlib first.
4272     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4273         eval ${pfx}libc_type=newlib
4274         add_${pfx}cppflags -U__STRICT_ANSI__
4275     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4276     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4277         eval ${pfx}libc_type=mingw64
4278         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4279             add_compat msvcrt/snprintf.o
4280             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4281         fi
4282         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4283         eval test \$${pfx_no_}cc_type = "gcc" &&
4284             add_${pfx}cppflags -D__printf__=__gnu_printf__
4285     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4286          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4287         eval ${pfx}libc_type=mingw32
4288         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4289             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4290             die "ERROR: MinGW32 runtime version must be >= 3.15."
4291         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4292         eval test \$${pfx_no_}cc_type = "gcc" &&
4293             add_${pfx}cppflags -D__printf__=__gnu_printf__
4294     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4295         eval ${pfx}libc_type=msvcrt
4296         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4297         # 0x601 by default unless something else is set by the user.
4298         # This can easily lead to us detecting functions only present
4299         # in such new versions and producing binaries requiring windows 7.0.
4300         # Therefore explicitly set the default to XP unless the user has
4301         # set something else on the command line.
4302         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4303             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4304     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4305         eval ${pfx}libc_type=klibc
4306     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4307         eval ${pfx}libc_type=bionic
4308     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4309         eval ${pfx}libc_type=solaris
4310         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4311     fi
4312     check_${pfx}cc <<EOF
4313 #include <time.h>
4314 void *v = localtime_r;
4315 EOF
4316 test "$?" != 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
4317 #include <time.h>
4318 void *v = localtime_r;
4319 EOF
4320
4321 }
4322
4323 probe_libc
4324 test -n "$libc_type" && enable libc_$libc_type
4325 probe_libc host_
4326 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4327
4328 case $libc_type in
4329     bionic)
4330         add_compat strtod.o strtod=avpriv_strtod
4331         ;;
4332     msvcrt)
4333         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -le 18 ]; then
4334             add_compat strtod.o strtod=avpriv_strtod
4335             add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4336                                          _snprintf=avpriv_snprintf  \
4337                                          vsnprintf=avpriv_vsnprintf
4338         fi
4339         ;;
4340 esac
4341
4342 # hacks for compiler/libc/os combinations
4343
4344 if enabled_all tms470 libc_glibc; then
4345     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4346     add_cppflags -D__USER_LABEL_PREFIX__=
4347     add_cppflags -D__builtin_memset=memset
4348     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4349     add_cflags   -pds=48    # incompatible redefinition of macro
4350 fi
4351
4352 if enabled_all ccc libc_glibc; then
4353     add_ldflags -Wl,-z,now  # calls to libots crash without this
4354 fi
4355
4356 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4357     add_cppflags '-I\$(SRC_PATH)/compat/float'
4358
4359 esc(){
4360     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4361 }
4362
4363 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4364
4365 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4366
4367 set_default libdir
4368 : ${shlibdir_default:="$libdir"}
4369
4370 set_default $PATHS_LIST
4371 set_default nm
4372
4373 # we need to build at least one lib type
4374 if ! enabled_any static shared; then
4375     cat <<EOF
4376 At least one library type must be built.
4377 Specify --enable-static to build the static libraries or --enable-shared to
4378 build the shared libraries as well. To only build the shared libraries specify
4379 --disable-static in addition to --enable-shared.
4380 EOF
4381     exit 1;
4382 fi
4383
4384 die_license_disabled() {
4385     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4386 }
4387
4388 die_license_disabled_gpl() {
4389     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4390 }
4391
4392 die_license_disabled gpl frei0r
4393 die_license_disabled gpl libcdio
4394 die_license_disabled gpl libsmbclient
4395 die_license_disabled gpl libutvideo
4396 die_license_disabled gpl libvidstab
4397 die_license_disabled gpl libx264
4398 die_license_disabled gpl libx265
4399 die_license_disabled gpl libxavs
4400 die_license_disabled gpl libxvid
4401 die_license_disabled gpl libzvbi
4402 die_license_disabled gpl x11grab
4403
4404 die_license_disabled nonfree libaacplus
4405 die_license_disabled nonfree libfaac
4406 die_license_disabled nonfree nvenc
4407 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4408 enabled gpl && die_license_disabled_gpl nonfree openssl
4409
4410 die_license_disabled version3 libopencore_amrnb
4411 die_license_disabled version3 libopencore_amrwb
4412 die_license_disabled version3 libsmbclient
4413 die_license_disabled version3 libvo_aacenc
4414 die_license_disabled version3 libvo_amrwbenc
4415
4416 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4417
4418 disabled optimizations || check_cflags -fomit-frame-pointer
4419
4420 enable_weak_pic() {
4421     disabled pic && return
4422     enable pic
4423     add_cppflags -DPIC
4424     case "$target_os" in
4425     mingw*|cygwin*)
4426         ;;
4427     *)
4428         add_cflags -fPIC
4429         ;;
4430     esac
4431     add_asflags  -fPIC
4432 }
4433
4434 enabled pic && enable_weak_pic
4435
4436 check_cc <<EOF || die "Symbol mangling check failed."
4437 int ff_extern;
4438 EOF
4439 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4440 extern_prefix=${sym%%ff_extern*}
4441
4442 check_cc <<EOF && enable_weak inline_asm
4443 void foo(void) { __asm__ volatile ("" ::); }
4444 EOF
4445
4446 _restrict=
4447 for restrict_keyword in restrict __restrict__ __restrict; do
4448     check_cc <<EOF && _restrict=$restrict_keyword && break
4449 void foo(char * $restrict_keyword p);
4450 EOF
4451 done
4452
4453 check_cc <<EOF && enable pragma_deprecated
4454 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4455 EOF
4456
4457 check_cc <<EOF && enable attribute_packed
4458 struct { int x; } __attribute__((packed)) x;
4459 EOF
4460
4461 check_cc <<EOF && enable attribute_may_alias
4462 union { int x; } __attribute__((may_alias)) x;
4463 EOF
4464
4465 check_cc <<EOF || die "endian test failed"
4466 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4467 EOF
4468 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4469
4470 if  [ "$cpu" = "power7" ] || [ "$cpu" = "power8" ] || enabled ppc64; then
4471     if ! enabled bigendian && enabled altivec ;then
4472         enable vsx
4473     fi
4474 fi
4475
4476 check_gas() {
4477     log "check_gas using '$as' as AS"
4478     # :vararg is used on aarch64, arm and ppc altivec
4479     check_as <<EOF || return 1
4480 .macro m n, y:vararg=0
4481 \n: .int \y
4482 .endm
4483 m x
4484 EOF
4485     # .altmacro is only used in arm asm
4486     ! enabled arm || check_as <<EOF || return 1
4487 .altmacro
4488 EOF
4489     enable gnu_as
4490     return 0
4491 }
4492
4493 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4494     nogas=:
4495     enabled_any arm aarch64 && nogas=die
4496     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
4497     as_noop=-v
4498
4499     case $as_type in
4500         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4501         gcc)  gaspp_as_type=gas ;;
4502         *)    gaspp_as_type=$as_type ;;
4503     esac
4504
4505     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4506
4507     test "${as#*gas-preprocessor.pl}" != "$as" ||
4508     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
4509         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
4510
4511     if ! check_gas ; then
4512         as=${gas:=$as}
4513         check_gas || \
4514             $nogas "GNU assembler not found, install/update gas-preprocessor"
4515     fi
4516
4517     check_as <<EOF && enable as_func
4518 .func test
4519 .endfunc
4520 EOF
4521 fi
4522
4523 check_inline_asm inline_asm_labels '"1:\n"'
4524
4525 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4526
4527 if enabled aarch64; then
4528     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4529     # internal assembler in clang 3.3 does not support this instruction
4530     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4531     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4532
4533     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4534
4535 elif enabled alpha; then
4536
4537     check_cflags -mieee
4538
4539 elif enabled arm; then
4540
4541     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4542 float func(float a, float b){ return a+b; }
4543 EOF
4544
4545     enabled thumb && check_cflags -mthumb || check_cflags -marm
4546
4547     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4548         enable vfp_args
4549     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4550         case "${cross_prefix:-$cc}" in
4551             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4552             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4553 __asm__ (".eabi_attribute 28, 1");
4554 int main(void) { return 0; }
4555 EOF
4556         esac
4557         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4558     fi
4559
4560     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4561     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4562     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4563     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4564     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4565     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4566     enabled setend  && check_insn setend  'setend be'
4567
4568     [ $target_os = linux ] || [ $target_os = android ] ||
4569         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4570             $ARCH_EXT_LIST_ARM
4571
4572     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4573
4574     check_as <<EOF && enable as_dn_directive
4575 ra .dn d0.i16
4576 .unreq ra
4577 EOF
4578
4579     # llvm's integrated assembler supports .object_arch from llvm 3.5
4580     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4581 .object_arch armv4
4582 EOF
4583
4584     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4585
4586 elif enabled mips; then
4587
4588     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4589
4590     # Enable minimum ISA based on selected options
4591     if enabled mips64 && (enabled mipsdspr1 || enabled mipsdspr2); then
4592         add_cflags "-mips64r2"
4593         add_asflags "-mips64r2"
4594     elif enabled mips64 && enabled mipsfpu; then
4595         add_cflags "-mips64"
4596         add_asflags "-mips64"
4597     elif enabled mipsfpu || enabled mipsdspr1 || enabled mipsdspr2; then
4598         add_cflags "-mips32r2"
4599         add_asflags "-mips32r2"
4600     fi
4601
4602     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4603      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4604     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4605      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4606     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4607      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4608
4609 elif enabled parisc; then
4610
4611     if enabled gcc; then
4612         case $($cc -dumpversion) in
4613             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
4614         esac
4615     fi
4616
4617 elif enabled ppc; then
4618
4619     enable local_aligned_8 local_aligned_16 local_aligned_32
4620
4621     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4622     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4623     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4624     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4625
4626     # AltiVec flags: The FSF version of GCC differs from the Apple version
4627     if enabled altivec; then
4628         check_cflags -maltivec -mabi=altivec &&
4629         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4630         check_cflags -faltivec
4631
4632         # check if our compiler supports Motorola AltiVec C API
4633         check_cc <<EOF || disable altivec
4634 $inc_altivec_h
4635 int main(void) {
4636     vector signed int v1 = (vector signed int) { 0 };
4637     vector signed int v2 = (vector signed int) { 1 };
4638     v1 = vec_add(v1, v2);
4639     return 0;
4640 }
4641 EOF
4642
4643         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4644     fi
4645
4646     if enabled vsx; then
4647         check_cflags -mvsx
4648     fi
4649 elif enabled x86; then
4650
4651     check_builtin rdtsc    intrin.h   "__rdtsc()"
4652     check_builtin mm_empty mmintrin.h "_mm_empty()"
4653
4654     enable local_aligned_8 local_aligned_16 local_aligned_32
4655
4656     # check whether EBP is available on x86
4657     # As 'i' is stored on the stack, this program will crash
4658     # if the base pointer is used to access it because the
4659     # base pointer is cleared in the inline assembly code.
4660     check_exec_crash <<EOF && enable ebp_available
4661 volatile int i=0;
4662 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4663 return i;
4664 EOF
4665
4666     # check whether EBX is available on x86
4667     check_inline_asm ebx_available '""::"b"(0)' &&
4668         check_inline_asm ebx_available '"":::"%ebx"'
4669
4670     # check whether xmm clobbers are supported
4671     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4672
4673     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
4674         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
4675
4676     # check whether binutils is new enough to compile SSSE3/MMXEXT
4677     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4678     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4679
4680     if ! disabled_any asm mmx yasm; then
4681         if check_cmd $yasmexe --version; then
4682             enabled x86_64 && yasm_extra="-m amd64"
4683             yasm_debug="-g dwarf2"
4684         elif check_cmd nasm -v; then
4685             yasmexe=nasm
4686             yasm_debug="-g -F dwarf"
4687             if enabled x86_64; then
4688                 case "$objformat" in
4689                     elf)   objformat=elf64 ;;
4690                     win32) objformat=win64 ;;
4691                 esac
4692             fi
4693         fi
4694
4695         YASMFLAGS="-f $objformat $yasm_extra"
4696         enabled pic               && append YASMFLAGS "-DPIC"
4697         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4698         case "$objformat" in
4699             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4700         esac
4701
4702         check_yasm "movbe ecx, [5]" && enable yasm ||
4703             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4704         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4705         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4706         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4707         check_yasm "CPU amdnop" || disable cpunop
4708     fi
4709
4710     case "$cpu" in
4711         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4712             disable fast_clz
4713         ;;
4714     esac
4715
4716 fi
4717
4718 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4719
4720 check_ldflags -Wl,--as-needed
4721 check_ldflags -Wl,-z,noexecstack
4722
4723 if check_func dlopen; then
4724     ldl=
4725 elif check_func dlopen -ldl; then
4726     ldl=-ldl
4727 fi
4728
4729 frei0r_filter_extralibs='$ldl'
4730 frei0r_src_filter_extralibs='$ldl'
4731 ladspa_filter_extralibs='$ldl'
4732 nvenc_encoder_extralibs='$ldl'
4733
4734 if ! disabled network; then
4735     check_func getaddrinfo $network_extralibs
4736     check_func getservbyport $network_extralibs
4737     check_func inet_aton $network_extralibs
4738
4739     check_type netdb.h "struct addrinfo"
4740     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4741     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4742     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4743     check_type poll.h "struct pollfd"
4744     check_type netinet/sctp.h "struct sctp_event_subscribe"
4745     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4746     check_type netinet/in.h "struct sockaddr_in6"
4747     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4748     check_type "sys/types.h sys/socket.h" socklen_t
4749
4750     # Prefer arpa/inet.h over winsock2
4751     if check_header arpa/inet.h ; then
4752         check_func closesocket
4753     elif check_header winsock2.h ; then
4754         check_func_headers winsock2.h closesocket -lws2 &&
4755             network_extralibs="-lws2" ||
4756         { check_func_headers winsock2.h closesocket -lws2_32 &&
4757             network_extralibs="-lws2_32"; } || disable winsock2_h network
4758         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4759
4760         check_type ws2tcpip.h socklen_t
4761         check_type ws2tcpip.h "struct addrinfo"
4762         check_type ws2tcpip.h "struct group_source_req"
4763         check_type ws2tcpip.h "struct ip_mreq_source"
4764         check_type ws2tcpip.h "struct ipv6_mreq"
4765         check_type winsock2.h "struct pollfd"
4766         check_struct winsock2.h "struct sockaddr" sa_len
4767         check_type ws2tcpip.h "struct sockaddr_in6"
4768         check_type ws2tcpip.h "struct sockaddr_storage"
4769     else
4770         disable network
4771     fi
4772 fi
4773
4774 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4775 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
4776 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4777 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4778 check_builtin sarestart signal.h "SA_RESTART"
4779 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4780
4781 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4782 check_func  ${malloc_prefix}memalign            && enable memalign
4783 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4784
4785 check_func  access
4786 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4787 check_func  fcntl
4788 check_func  fork
4789 check_func  gethrtime
4790 check_func  getopt
4791 check_func  getrusage
4792 check_func  gettimeofday
4793 check_func  gmtime_r
4794 check_func  isatty
4795 check_func  localtime_r
4796 check_func  mach_absolute_time
4797 check_func  mkstemp
4798 check_func  mmap
4799 check_func  mprotect
4800 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4801 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4802 check_func  sched_getaffinity
4803 check_func  setrlimit
4804 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4805 check_func  strerror_r
4806 check_func  sysconf
4807 check_func  sysctl
4808 check_func  usleep
4809
4810 check_func_headers conio.h kbhit
4811 check_func_headers io.h setmode
4812 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4813 check_func_headers stdlib.h getenv
4814
4815 check_func_headers windows.h CoTaskMemFree -lole32
4816 check_func_headers windows.h GetProcessAffinityMask
4817 check_func_headers windows.h GetProcessTimes
4818 check_func_headers windows.h GetSystemTimeAsFileTime
4819 check_func_headers windows.h MapViewOfFile
4820 check_func_headers windows.h PeekNamedPipe
4821 check_func_headers windows.h SetConsoleTextAttribute
4822 check_func_headers windows.h Sleep
4823 check_func_headers windows.h VirtualAlloc
4824 check_struct windows.h "CONDITION_VARIABLE" Ptr
4825 check_func_headers glob.h glob
4826 enabled xlib &&
4827     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4828
4829 check_header direct.h
4830 check_header dlfcn.h
4831 check_header dxva.h
4832 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4833 check_header io.h
4834 check_header libcrystalhd/libcrystalhd_if.h
4835 check_header mach/mach_time.h
4836 check_header malloc.h
4837 check_header net/udplite.h
4838 check_header poll.h
4839 check_header sys/mman.h
4840 check_header sys/param.h
4841 check_header sys/resource.h
4842 check_header sys/select.h
4843 check_header sys/time.h
4844 check_header sys/un.h
4845 check_header termios.h
4846 check_header unistd.h
4847 check_header vdpau/vdpau.h
4848 check_header vdpau/vdpau_x11.h
4849 check_header VideoDecodeAcceleration/VDADecoder.h
4850 check_header windows.h
4851 check_header X11/extensions/XvMClib.h
4852 check_header asm/types.h
4853
4854 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4855 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4856 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4857
4858 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4859
4860 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC"
4861
4862 if ! disabled w32threads && ! enabled pthreads; then
4863     check_func_headers "windows.h process.h" _beginthreadex &&
4864         enable w32threads || disable w32threads
4865 fi
4866
4867 # check for some common methods of building with pthread support
4868 # do this before the optional library checks as some of them require pthreads
4869 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4870     enable pthreads
4871     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
4872         add_cflags -pthread
4873         add_extralibs -pthread
4874     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
4875         add_cflags -pthreads
4876         add_extralibs -pthreads
4877     elif check_func&nbs