qsv: Add VC-1 decoder
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # Libav 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 LIBAV, 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 Libav."
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:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --quiet                  Suppress showing informative output
67   --list-decoders          show all available decoders
68   --list-encoders          show all available encoders
69   --list-hwaccels          show all available hardware accelerators
70   --list-demuxers          show all available demuxers
71   --list-muxers            show all available muxers
72   --list-parsers           show all available parsers
73   --list-protocols         show all available protocols
74   --list-bsfs              show all available bitstream filters
75   --list-indevs            show all available input devices
76   --list-outdevs           show all available output devices
77   --list-filters           show all available filters
78
79 Standard options:
80   --logfile=FILE           log tests and output to FILE [config.log]
81   --disable-logging        do not log configure debug information
82   --prefix=PREFIX          install in PREFIX [$prefix_default]
83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
84   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
86   --libdir=DIR             install libs in DIR [PREFIX/lib]
87   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
88   --incdir=DIR             install includes in DIR [PREFIX/include]
89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
90   --enable-rpath           use rpath when linking programs (USE WITH CARE)
91
92 Licensing options:
93   --enable-gpl             allow use of GPL code, the resulting libs
94                            and binaries will be under GPL [no]
95   --enable-version3        upgrade (L)GPL to version 3 [no]
96   --enable-nonfree         allow use of nonfree code, the resulting libs
97                            and binaries will be unredistributable [no]
98
99 Configuration options:
100   --disable-static         do not build static libraries [no]
101   --enable-shared          build shared libraries [no]
102   --enable-small           optimize for size instead of speed
103   --enable-runtime-cpudetect detect CPU capabilities at runtime (bigger binary)
104   --enable-gray            enable full grayscale support (slower color)
105   --disable-swscale-alpha  disable alpha channel support in swscale
106   --disable-all            disable building components, libraries and programs
107
108 Program options:
109   --disable-programs       do not build command line programs
110   --disable-avconv         disable avconv build
111   --disable-avplay         disable avplay build
112   --disable-avprobe        disable avprobe build
113   --disable-avserver       deprecated, does nothing
114
115 Component options:
116   --disable-doc            do not build documentation
117   --disable-pod2man        do not build manual pages
118   --disable-texi2html      do not build HTML documentation
119   --disable-avdevice       disable libavdevice build
120   --disable-avcodec        disable libavcodec build
121   --disable-avformat       disable libavformat build
122   --disable-avutil         disable libavutil build
123   --disable-swscale        disable libswscale build
124   --disable-avfilter       disable video filter support [no]
125   --disable-avresample     disable libavresample build [no]
126   --disable-pthreads       disable pthreads [auto]
127   --disable-w32threads     disable Win32 threads [auto]
128   --disable-network        disable network support [no]
129   --disable-dct            disable DCT code
130   --disable-error-resilience disable error resilience code
131   --disable-lsp            disable LSP code
132   --disable-lzo            disable LZO decoder code
133   --disable-mdct           disable MDCT code
134   --disable-rdft           disable RDFT code
135   --disable-fft            disable FFT code
136   --disable-faan           disable floating point AAN (I)DCT code
137
138 Individual component options:
139   --disable-everything     disable all components listed below
140   --disable-encoder=NAME   disable encoder NAME
141   --enable-encoder=NAME    enable encoder NAME
142   --disable-encoders       disable all encoders
143   --disable-decoder=NAME   disable decoder NAME
144   --enable-decoder=NAME    enable decoder NAME
145   --disable-decoders       disable all decoders
146   --disable-hwaccel=NAME   disable hwaccel NAME
147   --enable-hwaccel=NAME    enable hwaccel NAME
148   --disable-hwaccels       disable all hwaccels
149   --disable-muxer=NAME     disable muxer NAME
150   --enable-muxer=NAME      enable muxer NAME
151   --disable-muxers         disable all muxers
152   --disable-demuxer=NAME   disable demuxer NAME
153   --enable-demuxer=NAME    enable demuxer NAME
154   --disable-demuxers       disable all demuxers
155   --enable-parser=NAME     enable parser NAME
156   --disable-parser=NAME    disable parser NAME
157   --disable-parsers        disable all parsers
158   --enable-bsf=NAME        enable bitstream filter NAME
159   --disable-bsf=NAME       disable bitstream filter NAME
160   --disable-bsfs           disable all bitstream filters
161   --enable-protocol=NAME   enable protocol NAME
162   --disable-protocol=NAME  disable protocol NAME
163   --disable-protocols      disable all protocols
164   --enable-indev=NAME      enable input device NAME
165   --disable-indev=NAME     disable input device NAME
166   --disable-indevs         disable input devices
167   --enable-outdev=NAME     enable output device NAME
168   --disable-outdev=NAME    disable output device NAME
169   --disable-outdevs        disable output devices
170   --disable-devices        disable all devices
171   --enable-filter=NAME     enable filter NAME
172   --disable-filter=NAME    disable filter NAME
173   --disable-filters        disable all filters
174
175 External library support:
176
177   Using any of the following switches will allow Libav to link to the
178   corresponding external library. All the components depending on that library
179   will become enabled, if all their other dependencies are met and they are not
180   explicitly disabled. E.g. --enable-libwavpack will enable linking to
181   libwavpack and allow the libwavpack encoder to be built, unless it is
182   specifically disabled with --disable-encoder=libwavpack.
183
184   Note that only the system libraries are auto-detected. All the other external
185   libraries must be explicitly enabled.
186
187   Also note that the following help text describes the purpose of the libraries
188   themselves, not all their features will necessarily be usable by Libav.
189
190   --enable-avisynth          video frameserver
191   --enable-bzlib             bzip2 compression [autodetect]
192   --enable-frei0r            video filtering plugins
193   --enable-gnutls            crypto
194   --enable-libbs2b           Bauer stereophonic-to-binaural DSP
195   --enable-libcdio           audio CD input
196   --enable-libdc1394         IEEE 1394/Firewire camera input
197   --enable-libdcadec         DCA audio decoding
198   --enable-libfaac           AAC audio encoding
199   --enable-libfdk-aac        AAC audio encoding/decoding
200   --enable-libfontconfig     font configuration and management
201   --enable-libfreetype       font rendering
202   --enable-libgsm            GSM audio encoding/decoding
203   --enable-libhdcd           HDCD decoding filter
204   --enable-libilbc           ILBC audio encoding/decoding
205   --enable-libkvazaar        HEVC video encoding
206   --enable-libmp3lame        MP3 audio encoding
207   --enable-libopencore-amrnb AMR-NB audio encoding/decoding
208   --enable-libopencore-amrwb AMR-WB audio decoding
209   --enable-libopencv         computer vision
210   --enable-libopenh264       H.264 video encoding/decoding
211   --enable-libopenjpeg       JPEG 2000 image encoding/decoding
212   --enable-libopus           Opus audio encoding/decoding
213   --enable-libpulse          Pulseaudio sound server
214   --enable-librtmp           RTMP streaming
215   --enable-libschroedinger   Dirac video encoding/decoding
216   --enable-libsnappy         snappy compression
217   --enable-libspeex          Speex audio encoding/decoding
218   --enable-libtheora         Theora video encoding/decoding
219   --enable-libtwolame        MP2 audio encoding
220   --enable-libvo-aacenc      AAC audio encoding
221   --enable-libvo-amrwbenc    AMR-WB audio encoding
222   --enable-libvorbis         Vorbis audio encoding/decoding
223   --enable-libvpx            VP* video encoding/decoding
224   --enable-libwavpack        Wavpack audio encoding/decoding
225   --enable-libwebp           WebP image encoding/decoding
226   --enable-libx264           H.264 video encoding
227   --enable-libx265           HEVC video encoding
228   --enable-libxavs           Chinese AVS video encoding
229   --enable-libxcb            X window system protocol communication
230   --enable-libxcb-shm        X11 shm communication [auto]
231   --enable-libxcb-xfixes     X11 mouse rendering [auto]
232   --enable-libxvid           MPEG-4 ASP video encoding
233   --enable-openssl           crypto
234   --enable-zlib              compression [autodetect]
235
236   The following libraries provide various hardware acceleration features:
237   --enable-cuda    Nvidia CUDA (dynamically linked)
238   --enable-d3d11va Microsoft Direct3D 11 video acceleration [auto]
239   --enable-dxva2   Microsoft DirectX 9 video acceleration [auto]
240   --enable-libmfx  Intel MediaSDK (AKA Quick Sync Video)
241   --enable-libnpp  Nvidia CUDA processing
242   --enable-mmal    Broadcom Multi-Media Abstraction Layer (Raspberry Pi)
243   --enable-nvenc   Nvidia video encoding
244   --enable-omx     OpenMAX IL
245   --enable-omx-rpi OpenMAX IL for Raspberry Pi
246   --enable-vaapi   Video Acceleration API (mainly Unix/Intel)
247   --enable-vda     Apple Video Decode Acceleration [auto]
248   --enable-vdpau   Nvidia Video Decode and Presentation API for Unix [auto]
249
250 Toolchain options:
251   --arch=ARCH              select architecture [$arch]
252   --cpu=CPU                select the minimum required CPU (affects
253                            instruction selection, may crash on older CPUs)
254   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
255   --enable-cross-compile   assume a cross-compiler is used
256   --sysroot=PATH           root of cross-build tree
257   --sysinclude=PATH        location of cross-build system headers
258   --target-os=OS           compiler targets OS [$target_os]
259   --target-exec=CMD        command to run executables on target
260   --target-path=DIR        path to view of build directory on target
261   --target-samples=DIR     path to samples directory on target
262   --toolchain=NAME         set tool defaults according to NAME
263   --nm=NM                  use nm tool
264   --ar=AR                  use archive tool AR [$ar_default]
265   --as=AS                  use assembler AS [$as_default]
266   --cc=CC                  use C compiler CC [$cc_default]
267   --objcc=OCC              use ObjC compiler OCC [$cc_default]
268   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
269   --ld=LD                  use linker LD
270   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
271   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
272   --host-cc=HOSTCC         use host C compiler HOSTCC
273   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
274   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
275   --host-ld=HOSTLD         use host linker HOSTLD
276   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
277   --host-libs=HLIBS        use libs HLIBS when linking for host
278   --host-os=OS             compiler host OS [$target_os]
279   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
280   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
281   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
282   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
283   --extra-libs=ELIBS       add ELIBS [$ELIBS]
284   --extra-version=STRING   version string suffix []
285   --optflags=OPTFLAGS      override optimization-related compiler flags
286   --build-suffix=SUFFIX    library name suffix []
287   --enable-pic             build position-independent code
288   --enable-thumb           compile for Thumb instruction set
289   --enable-lto             use link-time optimization
290   --env="ENV=override"     override the environment variables
291
292 Advanced options (experts only):
293   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
294   --custom-allocator=NAME  use a supported custom allocator
295   --disable-symver         disable symbol versioning
296   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
297   --disable-safe-bitstream-reader
298                            disable buffer boundary checking in bitreaders
299                            (faster, but may crash)
300   --enable-sram            allow use of on-chip SRAM
301
302 Optimization options (experts only):
303   --disable-asm            disable all assembly optimizations
304   --disable-altivec        disable AltiVec optimizations
305   --disable-vsx            disable VSX optimizations
306   --disable-power8         disable POWER8 optimizations
307   --disable-amd3dnow       disable 3DNow! optimizations
308   --disable-amd3dnowext    disable 3DNow! extended optimizations
309   --disable-mmx            disable MMX optimizations
310   --disable-mmxext         disable MMXEXT optimizations
311   --disable-sse            disable SSE optimizations
312   --disable-sse2           disable SSE2 optimizations
313   --disable-sse3           disable SSE3 optimizations
314   --disable-ssse3          disable SSSE3 optimizations
315   --disable-sse4           disable SSE4 optimizations
316   --disable-sse42          disable SSE4.2 optimizations
317   --disable-avx            disable AVX optimizations
318   --disable-xop            disable XOP optimizations
319   --disable-fma3           disable FMA3 optimizations
320   --disable-fma4           disable FMA4 optimizations
321   --disable-avx2           disable AVX2 optimizations
322   --disable-armv5te        disable armv5te optimizations
323   --disable-armv6          disable armv6 optimizations
324   --disable-armv6t2        disable armv6t2 optimizations
325   --disable-vfp            disable VFP optimizations
326   --disable-neon           disable NEON optimizations
327   --disable-inline-asm     disable use of inline assembly
328   --disable-yasm           disable use of nasm/yasm assembly
329
330 Developer options (useful when working on Libav itself):
331   --disable-debug          disable debugging symbols
332   --enable-debug=LEVEL     set the debug level [$debuglevel]
333   --disable-optimizations  disable compiler optimizations
334   --enable-extra-warnings  enable more compiler warnings
335   --samples=PATH           location of test samples for FATE, if not set use
336                            \$LIBAV_SAMPLES at make invocation time.
337   --enable-neon-clobber-test check NEON registers for clobbering (should be
338                            used only for debugging purposes)
339   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
340                            should be used only for debugging purposes)
341   --enable-random          randomly enable/disable components
342   --disable-random
343   --enable-random=LIST     randomly enable/disable specific components or
344   --disable-random=LIST    component groups. LIST is a comma-separated list
345                            of NAME[:PROB] entries where NAME is a component
346                            (group) and PROB the probability associated with
347                            NAME (default 0.5).
348   --random-seed=VALUE      seed value for --enable/disable-random
349   --disable-valgrind-backtrace do not print a backtrace under Valgrind
350                            (only applies to --disable-optimizations builds)
351
352 NOTE: Object files are built at the place where configure is launched.
353 EOF
354   exit 0
355 }
356
357 quotes='""'
358
359 log(){
360     echo "$@" >> $logfile
361 }
362
363 log_file(){
364     log BEGIN $1
365     i=1
366     while read line; do
367         printf '%5s   %s\n' "${i}" "${line}"
368         i=$(($i+1))
369     done < $1 >> $logfile
370     log END $1
371 }
372
373 echolog(){
374     log "$@"
375     echo "$@"
376 }
377
378 warn(){
379     log "WARNING: $*"
380     WARNINGS="${WARNINGS}WARNING: $*\n"
381 }
382
383 die(){
384     echolog "$@"
385     cat <<EOF
386
387 If you think configure made a mistake, make sure you are using the latest
388 version from Git.  If the latest version fails, report the problem to the
389 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
390 EOF
391     if disabled logging; then
392         cat <<EOF
393 Rerun configure with logging enabled (do not use --disable-logging), and
394 include the log this produces with your report.
395 EOF
396     else
397         cat <<EOF
398 Include the log file "$logfile" produced by configure as this will help
399 solving the problem.
400 EOF
401     fi
402     exit 1
403 }
404
405 # Avoid locale weirdness, besides we really just want to translate ASCII.
406 toupper(){
407     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
408 }
409
410 tolower(){
411     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
412 }
413
414 c_escape(){
415     echo "$*" | sed 's/["\\]/\\\0/g'
416 }
417
418 sh_quote(){
419     v=$(echo "$1" | sed "s/'/'\\\\''/g")
420     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
421     echo "$v"
422 }
423
424 cleanws(){
425     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
426 }
427
428 filter(){
429     pat=$1
430     shift
431     for v; do
432         eval "case $v in $pat) echo $v ;; esac"
433     done
434 }
435
436 filter_out(){
437     pat=$1
438     shift
439     for v; do
440         eval "case $v in $pat) ;; *) echo $v ;; esac"
441     done
442 }
443
444 map(){
445     m=$1
446     shift
447     for v; do eval $m; done
448 }
449
450 add_suffix(){
451     suffix=$1
452     shift
453     for v; do echo ${v}${suffix}; done
454 }
455
456 set_all(){
457     value=$1
458     shift
459     for var in $*; do
460         eval $var=$value
461     done
462 }
463
464 set_weak(){
465     value=$1
466     shift
467     for var; do
468         eval : \${$var:=$value}
469     done
470 }
471
472 sanitize_var_name(){
473     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
474 }
475
476 set_safe(){
477     var=$1
478     shift
479     eval $(sanitize_var_name "$var")='$*'
480 }
481
482 get_safe(){
483     eval echo \$$(sanitize_var_name "$1")
484 }
485
486 pushvar(){
487     for pvar in $*; do
488         eval level=\${${pvar}_level:=0}
489         eval ${pvar}_${level}="\$$pvar"
490         eval ${pvar}_level=$(($level+1))
491     done
492 }
493
494 popvar(){
495     for pvar in $*; do
496         eval level=\${${pvar}_level:-0}
497         test $level = 0 && continue
498         eval level=$(($level-1))
499         eval $pvar="\${${pvar}_${level}}"
500         eval ${pvar}_level=$level
501         eval unset ${pvar}_${level}
502     done
503 }
504
505 enable(){
506     set_all yes $*
507 }
508
509 disable(){
510     set_all no $*
511 }
512
513 enable_weak(){
514     set_weak yes $*
515 }
516
517 disable_weak(){
518     set_weak no $*
519 }
520
521 enable_safe(){
522     for var; do
523         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
524     done
525 }
526
527 disable_safe(){
528     for var; do
529         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
530     done
531 }
532
533 do_enable_deep(){
534     for var; do
535         enabled $var && continue
536         eval sel="\$${var}_select"
537         eval sgs="\$${var}_suggest"
538         pushvar var sgs
539         enable_deep $sel
540         popvar sgs
541         enable_deep_weak $sgs
542         popvar var
543     done
544 }
545
546 enable_deep(){
547     do_enable_deep $*
548     enable $*
549 }
550
551 enable_deep_weak(){
552     for var; do
553         disabled $var && continue
554         pushvar var
555         do_enable_deep $var
556         popvar var
557         enable_weak $var
558     done
559 }
560
561 enabled(){
562     test "${1#!}" = "$1" && op== || op=!=
563     eval test "x\$${1#!}" $op "xyes"
564 }
565
566 disabled(){
567     test "${1#!}" = "$1" && op== || op=!=
568     eval test "x\$${1#!}" $op "xno"
569 }
570
571 enabled_all(){
572     for opt; do
573         enabled $opt || return 1
574     done
575 }
576
577 disabled_all(){
578     for opt; do
579         disabled $opt || return 1
580     done
581 }
582
583 enabled_any(){
584     for opt; do
585         enabled $opt && return 0
586     done
587 }
588
589 disabled_any(){
590     for opt; do
591         disabled $opt && return 0
592     done
593     return 1
594 }
595
596 set_default(){
597     for opt; do
598         eval : \${$opt:=\$${opt}_default}
599     done
600 }
601
602 is_in(){
603     value=$1
604     shift
605     for var in $*; do
606         [ $var = $value ] && return 0
607     done
608     return 1
609 }
610
611 do_check_deps(){
612     for cfg; do
613         cfg="${cfg#!}"
614         enabled ${cfg}_checking && die "Circular dependency for $cfg."
615         disabled ${cfg}_checking && continue
616         enable ${cfg}_checking
617         append allopts $cfg
618
619         eval dep_all="\$${cfg}_deps"
620         eval dep_any="\$${cfg}_deps_any"
621         eval dep_sel="\$${cfg}_select"
622         eval dep_sgs="\$${cfg}_suggest"
623         eval dep_ifa="\$${cfg}_if"
624         eval dep_ifn="\$${cfg}_if_any"
625
626         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
627         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
628         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
629
630         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
631         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
632         enabled_all  $dep_all || disable $cfg
633         enabled_any  $dep_any || disable $cfg
634         disabled_any $dep_sel && disable $cfg
635
636         if enabled $cfg; then
637             enable_deep $dep_sel
638             enable_deep_weak $dep_sgs
639         fi
640
641         disable ${cfg}_checking
642     done
643 }
644
645 check_deps(){
646     unset allopts
647
648     do_check_deps "$@"
649
650     for cfg in $allopts; do
651         enabled $cfg || continue
652         eval dep_extralibs="\$${cfg}_extralibs"
653         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
654     done
655 }
656
657 print_config(){
658     pfx=$1
659     files=$2
660     shift 2
661     map 'eval echo "$v \${$v:-no}"' "$@" |
662     awk "BEGIN { split(\"$files\", files) }
663         {
664             c = \"$pfx\" toupper(\$1);
665             v = \$2;
666             sub(/yes/, 1, v);
667             sub(/no/,  0, v);
668             for (f in files) {
669                 file = files[f];
670                 if (file ~ /\\.h\$/) {
671                     printf(\"#define %s %d\\n\", c, v) >>file;
672                 } else if (file ~ /\\.asm\$/) {
673                     printf(\"%%define %s %d\\n\", c, v) >>file;
674                 } else if (file ~ /\\.mak\$/) {
675                     n = -v ? \"\" : \"!\";
676                     printf(\"%s%s=yes\\n\", n, c) >>file;
677                 }
678             }
679         }"
680 }
681
682 print_enabled(){
683     suf=$1
684     shift
685     for v; do
686         enabled $v && printf "%s\n" ${v%$suf}
687     done
688 }
689
690 append(){
691     var=$1
692     shift
693     eval "$var=\"\$$var $*\""
694 }
695
696 prepend(){
697     var=$1
698     shift
699     eval "$var=\"$* \$$var\""
700 }
701
702 unique(){
703     var=$1
704     uniq_list=""
705     for tok in $(eval echo \$$var); do
706         uniq_list="$(filter_out $tok $uniq_list) $tok"
707     done
708     eval "$var=\"${uniq_list}\""
709 }
710
711 add_cppflags(){
712     append CPPFLAGS "$@"
713 }
714
715 add_cflags(){
716     append CFLAGS $($cflags_filter "$@")
717 }
718
719 add_asflags(){
720     append ASFLAGS $($asflags_filter "$@")
721 }
722
723 add_objcflags(){
724     append OBJCFLAGS $($objcflags_filter "$@")
725 }
726
727 add_ldflags(){
728     append LDFLAGS $($ldflags_filter "$@")
729 }
730
731 add_ldexeflags(){
732     append LDEXEFLAGS $($ldflags_filter "$@")
733 }
734
735 add_stripflags(){
736     append STRIPFLAGS "$@"
737 }
738
739 add_extralibs(){
740     prepend extralibs $($ldflags_filter "$@")
741 }
742
743 add_host_cppflags(){
744     append host_cppflags "$@"
745 }
746
747 add_host_cflags(){
748     append host_cflags $($host_cflags_filter "$@")
749 }
750
751 add_host_ldflags(){
752     append host_ldflags $($host_ldflags_filter "$@")
753 }
754
755 add_compat(){
756     append compat_objs $1
757     shift
758     map 'add_cppflags -D$v' "$@"
759 }
760
761 check_cmd(){
762     log "$@"
763     "$@" >> $logfile 2>&1
764 }
765
766 cc_o(){
767     eval printf '%s\\n' $CC_O
768 }
769
770 cc_e(){
771     eval printf '%s\\n' $CC_E
772 }
773
774 check_cc(){
775     log check_cc "$@"
776     cat > $TMPC
777     log_file $TMPC
778     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
779 }
780
781 check_objcc(){
782     log check_objcc "$@"
783     cat > $TMPC
784     log_file $TMPC
785     check_cmd $objcc $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPC
786 }
787
788 check_cpp(){
789     log check_cpp "$@"
790     cat > $TMPC
791     log_file $TMPC
792     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
793 }
794
795 as_o(){
796     eval printf '%s\\n' $AS_O
797 }
798
799 check_as(){
800     log check_as "$@"
801     cat > $TMPS
802     log_file $TMPS
803     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
804 }
805
806 check_inline_asm(){
807     log check_inline_asm "$@"
808     name="$1"
809     code="$2"
810     shift 2
811     disable $name
812     check_cc "$@" <<EOF && enable $name
813 void foo(void){ __asm__ volatile($code); }
814 EOF
815 }
816
817 check_insn(){
818     log check_insn "$@"
819     check_inline_asm ${1}_inline "\"$2\""
820     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
821 }
822
823 check_yasm(){
824     log check_yasm "$@"
825     echo "$1" > $TMPS
826     log_file $TMPS
827     shift 1
828     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
829 }
830
831 ld_o(){
832     eval printf '%s\\n' $LD_O
833 }
834
835 check_ld(){
836     log check_ld "$@"
837     flags=$(filter_out '-l*' "$@")
838     libs=$(filter '-l*' "$@")
839     check_cc $($cflags_filter $flags) || return
840     flags=$($ldflags_filter $flags)
841     libs=$($ldflags_filter $libs)
842     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
843 }
844
845 print_include(){
846     hdr=$1
847     test "${hdr%.h}" = "${hdr}" &&
848         echo "#include $hdr"    ||
849         echo "#include <$hdr>"
850 }
851
852 check_code(){
853     log check_code "$@"
854     check=$1
855     headers=$2
856     code=$3
857     shift 3
858     {
859         for hdr in $headers; do
860             print_include $hdr
861         done
862         echo "int main(void) { $code; return 0; }"
863     } | check_$check "$@"
864 }
865
866 check_cppflags(){
867     log check_cppflags "$@"
868     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
869 int x;
870 EOF
871 }
872
873 test_cflags(){
874     log test_cflags "$@"
875     set -- $($cflags_filter "$@")
876     check_cc "$@" <<EOF
877 int x;
878 EOF
879 }
880
881 check_cflags(){
882     log check_cflags "$@"
883     test_cflags "$@" && add_cflags "$@"
884 }
885
886 test_objcflags(){
887     log test_objcflags "$@"
888     set -- $($objcflags_filter "$@")
889     check_objcc "$@" <<EOF
890 int x;
891 EOF
892 }
893
894 check_objcflags(){
895     log check_objcflags "$@"
896     test_objcflags "$@" && add_objcflags "$@"
897 }
898
899 test_ldflags(){
900     log test_ldflags "$@"
901     check_ld "$@" <<EOF
902 int main(void){ return 0; }
903 EOF
904 }
905
906 check_ldflags(){
907     log check_ldflags "$@"
908     test_ldflags "$@" && add_ldflags "$@"
909 }
910
911 test_stripflags(){
912     log test_stripflags "$@"
913     # call check_cc to get a fresh TMPO
914     check_cc <<EOF
915 int main(void) { return 0; }
916 EOF
917     check_cmd $strip $STRIPFLAGS "$@" $TMPO
918 }
919
920 check_stripflags(){
921     log check_stripflags "$@"
922     test_stripflags "$@" && add_stripflags "$@"
923 }
924
925 check_header(){
926     log check_header "$@"
927     header=$1
928     shift
929     disable_safe $header
930     check_cpp "$@" <<EOF && enable_safe $header
931 #include <$header>
932 int x;
933 EOF
934 }
935
936 check_func(){
937     log check_func "$@"
938     func=$1
939     shift
940     disable $func
941     check_ld "$@" <<EOF && enable $func
942 extern int $func();
943 int main(void){ $func(); }
944 EOF
945 }
946
947 check_mathfunc(){
948     log check_mathfunc "$@"
949     func=$1
950     narg=$2
951     shift 2
952     test $narg = 2 && args="f, g" || args="f"
953     disable $func
954     check_ld "$@" <<EOF && enable $func
955 #include <math.h>
956 float foo(float f, float g) { return $func($args); }
957 int main(void){ return 0; }
958 EOF
959 }
960
961 check_func_headers(){
962     log check_func_headers "$@"
963     headers=$1
964     funcs=$2
965     shift 2
966     {
967         for hdr in $headers; do
968             print_include $hdr
969         done
970         for func in $funcs; do
971             echo "long check_$func(void) { return (long) $func; }"
972         done
973         echo "int main(void) { return 0; }"
974     } | check_ld "$@" && enable $funcs && enable_safe $headers
975 }
976
977 check_cpp_condition(){
978     log check_cpp_condition "$@"
979     header=$1
980     condition=$2
981     shift 2
982     check_cpp "$@" <<EOF
983 #include <$header>
984 #if !($condition)
985 #error "unsatisfied condition: $condition"
986 #endif
987 EOF
988 }
989
990 test_cflags_cpp(){
991     log test_cflags_cpp "$@"
992     flags=$1
993     condition=$2
994     shift 2
995     set -- $($cflags_filter "$flags")
996     check_cpp "$@" <<EOF
997 #if !($condition)
998 #error "unsatisfied condition: $condition"
999 #endif
1000 EOF
1001 }
1002
1003 check_lib(){
1004     log check_lib "$@"
1005     headers="$1"
1006     funcs="$2"
1007     shift 2
1008     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1009 }
1010
1011 check_pkg_config(){
1012     log check_pkg_config "$@"
1013     pkg="$1"
1014     headers="$2"
1015     funcs="$3"
1016     shift 3
1017     check_cmd $pkg_config --exists --print-errors $pkg || return
1018     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1019     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1020     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1021         set_safe "${pkg}_cflags" $pkg_cflags   &&
1022         set_safe "${pkg}_libs"   $pkg_libs
1023 }
1024
1025 check_exec(){
1026     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1027 }
1028
1029 check_exec_crash(){
1030     log check_exec_crash "$@"
1031     code=$(cat)
1032
1033     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1034     # are safe but may not be available everywhere.  Thus we use
1035     # raise(SIGTERM) instead.  The check is run in a subshell so we
1036     # can redirect the "Terminated" message from the shell.  SIGBUS
1037     # is not defined by standard C so it is used conditionally.
1038
1039     (check_exec "$@") >> $logfile 2>&1 <<EOF
1040 #include <signal.h>
1041 static void sighandler(int sig){
1042     raise(SIGTERM);
1043 }
1044 int foo(void){
1045     $code
1046 }
1047 int (*func_ptr)(void) = foo;
1048 int main(void){
1049     signal(SIGILL, sighandler);
1050     signal(SIGFPE, sighandler);
1051     signal(SIGSEGV, sighandler);
1052 #ifdef SIGBUS
1053     signal(SIGBUS, sighandler);
1054 #endif
1055     return func_ptr();
1056 }
1057 EOF
1058 }
1059
1060 check_type(){
1061     log check_type "$@"
1062     headers=$1
1063     type=$2
1064     shift 2
1065     disable_safe "$type"
1066     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1067 }
1068
1069 check_struct(){
1070     log check_struct "$@"
1071     headers=$1
1072     struct=$2
1073     member=$3
1074     shift 3
1075     disable_safe "${struct}_${member}"
1076     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1077         enable_safe "${struct}_${member}"
1078 }
1079
1080 check_builtin(){
1081     log check_builtin "$@"
1082     name=$1
1083     headers=$2
1084     builtin=$3
1085     shift 3
1086     disable "$name"
1087     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1088 }
1089
1090 check_compile_assert(){
1091     log check_compile_assert "$@"
1092     name=$1
1093     headers=$2
1094     condition=$3
1095     shift 3
1096     disable "$name"
1097     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1098 }
1099
1100 require(){
1101     log require "$@"
1102     name="$1"
1103     headers="$2"
1104     func="$3"
1105     shift 3
1106     check_lib "$headers" $func "$@" || die "ERROR: $name not found"
1107 }
1108
1109 require_pkg_config(){
1110     log require_pkg_config "$@"
1111     pkg="$1"
1112     check_pkg_config "$@" || die "ERROR: $pkg not found"
1113     add_cflags    $(get_safe "${pkg}_cflags")
1114     add_extralibs $(get_safe "${pkg}_libs")
1115 }
1116
1117 hostcc_e(){
1118     eval printf '%s\\n' $HOSTCC_E
1119 }
1120
1121 hostcc_o(){
1122     eval printf '%s\\n' $HOSTCC_O
1123 }
1124
1125 check_host_cc(){
1126     log check_host_cc "$@"
1127     cat > $TMPC
1128     log_file $TMPC
1129     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1130 }
1131
1132 check_host_cpp(){
1133     log check_host_cpp "$@"
1134     cat > $TMPC
1135     log_file $TMPC
1136     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1137 }
1138
1139 check_host_cppflags(){
1140     log check_host_cppflags "$@"
1141     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1142 int x;
1143 EOF
1144 }
1145
1146 check_host_cflags(){
1147     log check_host_cflags "$@"
1148     set -- $($host_cflags_filter "$@")
1149     check_host_cc "$@" <<EOF && append host_cflags "$@"
1150 int x;
1151 EOF
1152 }
1153
1154 check_host_cpp_condition(){
1155     log check_host_cpp_condition "$@"
1156     header=$1
1157     condition=$2
1158     shift 2
1159     check_host_cpp "$@" <<EOF
1160 #include <$header>
1161 #if !($condition)
1162 #error "unsatisfied condition: $condition"
1163 #endif
1164 EOF
1165 }
1166
1167 apply(){
1168     file=$1
1169     shift
1170     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1171 }
1172
1173 cp_if_changed(){
1174     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1175     mkdir -p "$(dirname $2)"
1176     $cp_f "$1" "$2"
1177 }
1178
1179 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1180 # system-dependent things.
1181
1182 AVCODEC_COMPONENTS="
1183     bsfs
1184     decoders
1185     encoders
1186     hwaccels
1187     parsers
1188 "
1189
1190 AVDEVICE_COMPONENTS="
1191     indevs
1192     outdevs
1193 "
1194 AVFILTER_COMPONENTS="
1195     filters
1196 "
1197 AVFORMAT_COMPONENTS="
1198     demuxers
1199     muxers
1200     protocols
1201 "
1202
1203 AVRESAMPLE_COMPONENTS=""
1204 AVUTIL_COMPONENTS=""
1205
1206 COMPONENT_LIST="
1207     $AVCODEC_COMPONENTS
1208     $AVDEVICE_COMPONENTS
1209     $AVFILTER_COMPONENTS
1210     $AVFORMAT_COMPONENTS
1211     $AVRESAMPLE_COMPONENTS
1212     $AVUTIL_COMPONENTS
1213 "
1214
1215 EXAMPLE_LIST="
1216     decode_audio_example
1217     decode_video_example
1218     encode_audio_example
1219     encode_video_example
1220     filter_audio_example
1221     metadata_example
1222     output_example
1223     qsvdec_example
1224     transcode_aac_example
1225 "
1226
1227 HWACCEL_LIBRARY_NONFREE_LIST="
1228     cuda
1229     libnpp
1230 "
1231 HWACCEL_LIBRARY_LIST="
1232     $HWACCEL_LIBRARY_NONFREE_LIST
1233     d3d11va
1234     dxva2
1235     libmfx
1236     mmal
1237     nvenc
1238     omx
1239     vaapi
1240     vda
1241     vdpau
1242 "
1243
1244 EXTERNAL_LIBRARY_GPL_LIST="
1245     libcdio
1246     libx264
1247     libx265
1248     libxavs
1249     libxvid
1250 "
1251
1252 EXTERNAL_LIBRARY_NONFREE_LIST="
1253     libfaac
1254     libfdk_aac
1255     openssl
1256 "
1257
1258 EXTERNAL_LIBRARY_VERSION3_LIST="
1259     libopencore_amrnb
1260     libopencore_amrwb
1261     libvo_aacenc
1262     libvo_amrwbenc
1263 "
1264
1265 EXTERNAL_LIBRARY_LIST="
1266     $EXTERNAL_LIBRARY_GPL_LIST
1267     $EXTERNAL_LIBRARY_NONFREE_LIST
1268     $EXTERNAL_LIBRARY_VERSION3_LIST
1269     avisynth
1270     bzlib
1271     frei0r
1272     gnutls
1273     libbs2b
1274     libdc1394
1275     libdcadec
1276     libfontconfig
1277     libfreetype
1278     libgsm
1279     libhdcd
1280     libilbc
1281     libkvazaar
1282     libmp3lame
1283     libopencv
1284     libopenh264
1285     libopenjpeg
1286     libopus
1287     libpulse
1288     librtmp
1289     libschroedinger
1290     libsnappy
1291     libspeex
1292     libtheora
1293     libtwolame
1294     libvorbis
1295     libvpx
1296     libwavpack
1297     libwebp
1298     libxcb
1299     libxcb_shm
1300     libxcb_xfixes
1301     zlib
1302 "
1303
1304 FEATURE_LIST="
1305     gray
1306     hardcoded_tables
1307     omx_rpi
1308     runtime_cpudetect
1309     safe_bitstream_reader
1310     shared
1311     small
1312     sram
1313     static
1314     swscale_alpha
1315 "
1316
1317 LIBRARY_LIST="
1318     avcodec
1319     avdevice
1320     avfilter
1321     avformat
1322     avresample
1323     avutil
1324     swscale
1325 "
1326
1327 LICENSE_LIST="
1328     gpl
1329     nonfree
1330     version3
1331 "
1332
1333 PROGRAM_LIST="
1334     avconv
1335     avplay
1336     avprobe
1337 "
1338
1339 SUBSYSTEM_LIST="
1340     dct
1341     doc
1342     error_resilience
1343     faan
1344     fft
1345     lsp
1346     lzo
1347     mdct
1348     network
1349     rdft
1350 "
1351
1352 CONFIG_LIST="
1353     $COMPONENT_LIST
1354     $EXAMPLE_LIST
1355     $EXTERNAL_LIBRARY_LIST
1356     $HWACCEL_LIBRARY_LIST
1357     $FEATURE_LIST
1358     $LICENSE_LIST
1359     $LIBRARY_LIST
1360     $PROGRAM_LIST
1361     $SUBSYSTEM_LIST
1362     neon_clobber_test
1363     pic
1364     pod2man
1365     texi2html
1366     thumb
1367     valgrind_backtrace
1368     xmm_clobber_test
1369 "
1370
1371 THREADS_LIST="
1372     pthreads
1373     w32threads
1374 "
1375
1376 ATOMICS_LIST="
1377     atomics_gcc
1378     atomics_suncc
1379     atomics_win32
1380 "
1381
1382 ARCH_LIST="
1383     aarch64
1384     alpha
1385     arm
1386     avr32
1387     avr32_ap
1388     avr32_uc
1389     bfin
1390     ia64
1391     m68k
1392     mips
1393     mips64
1394     parisc
1395     ppc
1396     ppc64
1397     s390
1398     sh4
1399     sparc
1400     sparc64
1401     tilegx
1402     tilepro
1403     tomi
1404     x86
1405     x86_32
1406     x86_64
1407 "
1408
1409 ARCH_EXT_LIST_ARM="
1410     armv5te
1411     armv6
1412     armv6t2
1413     armv8
1414     neon
1415     vfp
1416     vfpv3
1417 "
1418
1419 ARCH_EXT_LIST_X86_SIMD="
1420     amd3dnow
1421     amd3dnowext
1422     avx
1423     avx2
1424     fma3
1425     fma4
1426     mmx
1427     mmxext
1428     sse
1429     sse2
1430     sse3
1431     sse4
1432     sse42
1433     ssse3
1434     xop
1435 "
1436
1437 ARCH_EXT_LIST_PPC="
1438     altivec
1439     dcbzl
1440     ldbrx
1441     power8
1442     ppc4xx
1443     vsx
1444 "
1445
1446 ARCH_EXT_LIST_X86="
1447     $ARCH_EXT_LIST_X86_SIMD
1448     cpunop
1449     i686
1450 "
1451
1452 ARCH_EXT_LIST_MIPS="
1453     loongson
1454     mips32r1
1455     mips64r1
1456     mips32r2
1457     mips64r2
1458     mips32r6
1459     mips64r6
1460 "
1461
1462 ARCH_EXT_LIST="
1463     $ARCH_EXT_LIST_ARM
1464     $ARCH_EXT_LIST_MIPS
1465     $ARCH_EXT_LIST_PPC
1466     $ARCH_EXT_LIST_X86
1467     vis
1468 "
1469
1470 ARCH_FEATURES="
1471     aligned_stack
1472     fast_64bit
1473     fast_clz
1474     fast_cmov
1475     local_aligned_8
1476     local_aligned_16
1477     local_aligned_32
1478     simd_align_16
1479     simd_align_32
1480 "
1481
1482 BUILTIN_LIST="
1483     atomic_cas_ptr
1484     machine_rw_barrier
1485     MemoryBarrier
1486     mm_empty
1487     rdtsc
1488     sem_timedwait
1489     sync_val_compare_and_swap
1490 "
1491 HAVE_LIST_CMDLINE="
1492     inline_asm
1493     symver
1494     yasm
1495 "
1496
1497 HAVE_LIST_PUB="
1498     bigendian
1499     fast_unaligned
1500 "
1501
1502 HEADERS_LIST="
1503     AVFoundation_AVFoundation_h
1504     alsa_asoundlib_h
1505     altivec_h
1506     arpa_inet_h
1507     cdio_paranoia_h
1508     cdio_paranoia_paranoia_h
1509     dispatch_dispatch_h
1510     dev_bktr_ioctl_bt848_h
1511     dev_bktr_ioctl_meteor_h
1512     dev_ic_bt8xx_h
1513     dev_video_bktr_ioctl_bt848_h
1514     dev_video_meteor_ioctl_meteor_h
1515     direct_h
1516     dlfcn_h
1517     d3d11_h
1518     dxva_h
1519     gsm_h
1520     io_h
1521     mach_mach_time_h
1522     machine_ioctl_bt848_h
1523     machine_ioctl_meteor_h
1524     malloc_h
1525     poll_h
1526     sndio_h
1527     soundcard_h
1528     stdatomic_h
1529     sys_mman_h
1530     sys_param_h
1531     sys_resource_h
1532     sys_select_h
1533     sys_soundcard_h
1534     sys_time_h
1535     sys_un_h
1536     sys_videoio_h
1537     unistd_h
1538     valgrind_valgrind_h
1539     windows_h
1540     winsock2_h
1541 "
1542
1543 INTRINSICS_LIST="
1544     intrinsics_neon
1545 "
1546
1547 MATH_FUNCS="
1548     atanf
1549     atan2f
1550     cbrtf
1551     cosf
1552     exp2
1553     exp2f
1554     expf
1555     isinf
1556     isnan
1557     ldexpf
1558     llrint
1559     llrintf
1560     log2
1561     log2f
1562     log10f
1563     lrint
1564     lrintf
1565     powf
1566     rint
1567     round
1568     roundf
1569     sinf
1570     trunc
1571     truncf
1572 "
1573
1574 SYSTEM_FUNCS="
1575     aligned_malloc
1576     clock_gettime
1577     closesocket
1578     CommandLineToArgvW
1579     CoTaskMemFree
1580     CryptGenRandom
1581     dlopen
1582     fcntl
1583     flt_lim
1584     fork
1585     getaddrinfo
1586     gethrtime
1587     getopt
1588     GetProcessAffinityMask
1589     GetProcessMemoryInfo
1590     GetProcessTimes
1591     getrusage
1592     GetSystemTimeAsFileTime
1593     gettimeofday
1594     gmtime_r
1595     inet_aton
1596     isatty
1597     jack_port_get_latency_range
1598     LoadLibrary
1599     localtime_r
1600     mach_absolute_time
1601     MapViewOfFile
1602     memalign
1603     mkstemp
1604     mmap
1605     mprotect
1606     nanosleep
1607     posix_memalign
1608     sched_getaffinity
1609     SetConsoleTextAttribute
1610     setmode
1611     setrlimit
1612     Sleep
1613     strerror_r
1614     sysconf
1615     sysctl
1616     usleep
1617     VirtualAlloc
1618 "
1619
1620 TOOLCHAIN_FEATURES="
1621     as_dn_directive
1622     as_fpu_directive
1623     as_func
1624     as_object_arch
1625     asm_mod_q
1626     attribute_may_alias
1627     attribute_packed
1628     ebp_available
1629     ebx_available
1630     gnu_as
1631     ibm_asm
1632     inline_asm_labels
1633     pragma_deprecated
1634     symver_asm_label
1635     symver_gnu_asm
1636     vfp_args
1637     xform_asm
1638     xmm_clobbers
1639 "
1640
1641 TYPES_LIST="
1642     CONDITION_VARIABLE_Ptr
1643     socklen_t
1644     struct_addrinfo
1645     struct_group_source_req
1646     struct_ip_mreq_source
1647     struct_ipv6_mreq
1648     struct_pollfd
1649     struct_rusage_ru_maxrss
1650     struct_sockaddr_in6
1651     struct_sockaddr_sa_len
1652     struct_sockaddr_storage
1653     struct_v4l2_frmivalenum_discrete
1654 "
1655
1656 HAVE_LIST="
1657     $ARCH_EXT_LIST
1658     $(add_suffix _external $ARCH_EXT_LIST)
1659     $(add_suffix _inline   $ARCH_EXT_LIST)
1660     $ARCH_FEATURES
1661     $BUILTIN_LIST
1662     $HAVE_LIST_CMDLINE
1663     $HAVE_LIST_PUB
1664     $HEADERS_LIST
1665     $INTRINSICS_LIST
1666     $MATH_FUNCS
1667     $SYSTEM_FUNCS
1668     $THREADS_LIST
1669     $TOOLCHAIN_FEATURES
1670     $TYPES_LIST
1671     dos_paths
1672     dxva2_lib
1673     libc_msvcrt
1674     libdc1394_1
1675     libdc1394_2
1676     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1677     sdl
1678     section_data_rel_ro
1679     threads
1680     vaapi_drm
1681     vaapi_x11
1682     vdpau_x11
1683     xlib
1684 "
1685
1686 # options emitted with CONFIG_ prefix but not available on the command line
1687 CONFIG_EXTRA="
1688     aandcttables
1689     ac3dsp
1690     audio_frame_queue
1691     audiodsp
1692     blockdsp
1693     bswapdsp
1694     cabac
1695     dirac_parse
1696     dvprofile
1697     faandct
1698     faanidct
1699     fdctdsp
1700     flacdsp
1701     fmtconvert
1702     g722dsp
1703     gcrypt
1704     gmp
1705     golomb
1706     gplv3
1707     h263dsp
1708     h264chroma
1709     h264dsp
1710     h264parse
1711     h264pred
1712     h264qpel
1713     hpeldsp
1714     huffman
1715     huffyuvdsp
1716     huffyuvencdsp
1717     idctdsp
1718     iirfilter
1719     imdct15
1720     intrax8
1721     iso_media
1722     ividsp
1723     jpegtables
1724     libx262
1725     lgplv3
1726     lpc
1727     lzf
1728     me_cmp
1729     mpeg_er
1730     mpegaudio
1731     mpegaudiodsp
1732     mpegvideo
1733     mpegvideoenc
1734     mss34dsp
1735     pixblockdsp
1736     qpeldsp
1737     qsv
1738     qsvdec
1739     qsvenc
1740     rangecoder
1741     riffdec
1742     riffenc
1743     rtpdec
1744     rtpenc_chain
1745     rv34dsp
1746     sinewin
1747     snappy
1748     srtp
1749     startcode
1750     texturedsp
1751     texturedspenc
1752     tpeldsp
1753     vaapi_encode
1754     vc1dsp
1755     videodsp
1756     vp3dsp
1757     vp56dsp
1758     vp8dsp
1759     wma_freqs
1760     wmv2dsp
1761 "
1762
1763 CMDLINE_SELECT="
1764     $ARCH_EXT_LIST
1765     $CONFIG_LIST
1766     $HAVE_LIST_CMDLINE
1767     $THREADS_LIST
1768     asm
1769     cross_compile
1770     debug
1771     extra_warnings
1772     logging
1773     lto
1774     optimizations
1775     rpath
1776 "
1777
1778 PATHS_LIST="
1779     bindir
1780     datadir
1781     docdir
1782     incdir
1783     libdir
1784     mandir
1785     prefix
1786     shlibdir
1787 "
1788
1789 CMDLINE_SET="
1790     $PATHS_LIST
1791     ar
1792     arch
1793     as
1794     build_suffix
1795     cc
1796     objcc
1797     cpu
1798     cross_prefix
1799     custom_allocator
1800     dep_cc
1801     env
1802     extra_version
1803     host_cc
1804     host_cflags
1805     host_ld
1806     host_ldflags
1807     host_libs
1808     host_os
1809     ld
1810     logfile
1811     malloc_prefix
1812     nm
1813     optflags
1814     pkg_config
1815     pkg_config_flags
1816     random_seed
1817     samples
1818     sysinclude
1819     sysroot
1820     target_exec
1821     target_os
1822     target_path
1823     target_samples
1824     toolchain
1825 "
1826
1827 CMDLINE_APPEND="
1828     extra_cflags
1829     extra_objcflags
1830     host_cppflags
1831 "
1832
1833 # code dependency declarations
1834
1835 # architecture extensions
1836
1837 armv5te_deps="arm"
1838 armv6_deps="arm"
1839 armv6t2_deps="arm"
1840 armv8_deps="aarch64"
1841 neon_deps_any="aarch64 arm"
1842 intrinsics_neon_deps="neon"
1843 vfp_deps_any="aarch64 arm"
1844 vfpv3_deps="vfp"
1845
1846 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1847
1848 altivec_deps="ppc"
1849 ppc4xx_deps="ppc"
1850 vsx_deps="altivec"
1851 power8_deps="vsx"
1852
1853 cpunop_deps="i686"
1854 x86_64_select="i686"
1855 x86_64_suggest="fast_cmov"
1856
1857 amd3dnow_deps="mmx"
1858 amd3dnowext_deps="amd3dnow"
1859 i686_deps="x86"
1860 mmx_deps="x86"
1861 mmxext_deps="mmx"
1862 sse_deps="mmxext"
1863 sse2_deps="sse"
1864 sse3_deps="sse2"
1865 ssse3_deps="sse3"
1866 sse4_deps="ssse3"
1867 sse42_deps="sse4"
1868 avx_deps="sse42"
1869 xop_deps="avx"
1870 fma3_deps="avx"
1871 fma4_deps="avx"
1872 avx2_deps="avx"
1873
1874 mmx_external_deps="yasm"
1875 mmx_inline_deps="inline_asm"
1876 mmx_suggest="mmx_external mmx_inline"
1877
1878 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1879     eval dep=\$${ext}_deps
1880     eval ${ext}_external_deps='"${dep}_external"'
1881     eval ${ext}_inline_deps='"${dep}_inline"'
1882     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1883 done
1884
1885 aligned_stack_if_any="aarch64 ppc x86"
1886 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1887 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1888 fast_unaligned_if_any="aarch64 ppc x86"
1889 simd_align_16_if_any="altivec neon sse"
1890 simd_align_32_if_any="avx"
1891
1892 # system capabilities
1893 symver_if_any="symver_asm_label symver_gnu_asm"
1894 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
1895
1896 # threading support
1897 atomics_gcc_if="sync_val_compare_and_swap"
1898 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1899 atomics_win32_if="MemoryBarrier"
1900 atomics_native_if_any="$ATOMICS_LIST"
1901 w32threads_deps="atomics_native"
1902 threads_if_any="$THREADS_LIST"
1903
1904 # subsystems
1905 dct_select="rdft"
1906 dirac_parse_select="golomb"
1907 error_resilience_select="me_cmp"
1908 faandct_deps="faan fdctdsp"
1909 faanidct_deps="faan idctdsp"
1910 h264dsp_select="startcode"
1911 intrax8_select="blockdsp idctdsp"
1912 mdct_select="fft"
1913 rdft_select="fft"
1914 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1915 mpeg_er_select="error_resilience"
1916 mpegaudio_select="mpegaudiodsp"
1917 mpegaudiodsp_select="dct"
1918 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1919 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1920 vc1dsp_select="h264chroma qpeldsp startcode"
1921
1922 # decoders / encoders
1923 aac_decoder_select="imdct15 mdct sinewin"
1924 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1925 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1926 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1927 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1928 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1929 adpcm_g722_decoder_select="g722dsp"
1930 adpcm_g722_encoder_select="g722dsp"
1931 aic_decoder_select="golomb idctdsp"
1932 alac_encoder_select="lpc"
1933 als_decoder_select="bswapdsp"
1934 amrnb_decoder_select="lsp"
1935 amrwb_decoder_select="lsp"
1936 amv_decoder_select="sp5x_decoder"
1937 ape_decoder_select="bswapdsp"
1938 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1939 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1940 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1941 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1942 atrac1_decoder_select="mdct sinewin"
1943 atrac3_decoder_select="mdct"
1944 atrac3p_decoder_select="mdct sinewin"
1945 bink_decoder_select="blockdsp hpeldsp"
1946 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1947 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1948 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1949 cllc_decoder_select="bswapdsp"
1950 comfortnoise_encoder_select="lpc"
1951 cook_decoder_select="audiodsp mdct sinewin"
1952 cscd_decoder_select="lzo"
1953 cscd_decoder_suggest="zlib"
1954 dca_decoder_select="fmtconvert mdct"
1955 dds_decoder_select="texturedsp"
1956 dnxhd_decoder_select="blockdsp idctdsp"
1957 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1958 dvvideo_decoder_select="dvprofile idctdsp"
1959 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1960 dxa_decoder_deps="zlib"
1961 dxv_decoder_select="lzf texturedsp"
1962 eac3_decoder_select="ac3_decoder"
1963 eac3_encoder_select="ac3_encoder"
1964 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1965 eatgq_decoder_select="aandcttables idctdsp"
1966 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
1967 exr_decoder_deps="zlib"
1968 ffv1_decoder_select="golomb rangecoder"
1969 ffv1_encoder_select="rangecoder"
1970 ffvhuff_decoder_select="huffyuv_decoder"
1971 ffvhuff_encoder_select="huffyuv_encoder"
1972 fic_decoder_select="golomb"
1973 flac_decoder_select="flacdsp golomb"
1974 flac_encoder_select="bswapdsp flacdsp golomb lpc"
1975 flashsv_decoder_deps="zlib"
1976 flashsv_encoder_deps="zlib"
1977 flashsv2_decoder_deps="zlib"
1978 flv_decoder_select="h263_decoder"
1979 flv_encoder_select="h263_encoder"
1980 fourxm_decoder_select="blockdsp bswapdsp"
1981 fraps_decoder_select="bswapdsp huffman"
1982 g2m_decoder_deps="zlib"
1983 g2m_decoder_select="blockdsp idctdsp jpegtables"
1984 h261_decoder_select="mpeg_er mpegvideo"
1985 h261_encoder_select="aandcttables mpegvideoenc"
1986 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1987 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1988 h263i_decoder_select="h263_decoder"
1989 h263p_encoder_select="h263_encoder"
1990 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
1991 h264_decoder_suggest="error_resilience"
1992 hap_decoder_select="snappy texturedsp"
1993 hap_encoder_deps="libsnappy"
1994 hap_encoder_select="texturedspenc"
1995 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1996 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1997 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1998 iac_decoder_select="imc_decoder"
1999 imc_decoder_select="bswapdsp fft mdct sinewin"
2000 indeo3_decoder_select="hpeldsp"
2001 indeo4_decoder_select="ividsp"
2002 indeo5_decoder_select="ividsp"
2003 interplay_video_decoder_select="hpeldsp"
2004 jpegls_decoder_select="golomb mjpeg_decoder"
2005 jpegls_encoder_select="golomb"
2006 jv_decoder_select="blockdsp"
2007 lagarith_decoder_select="huffyuvdsp"
2008 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2009 loco_decoder_select="golomb"
2010 magicyuv_decoder_select="huffyuvdsp"
2011 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2012 metasound_decoder_select="lsp mdct sinewin"
2013 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2014 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2015 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2016 mjpegb_decoder_select="mjpeg_decoder"
2017 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2018 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2019 mlp_decoder_select="mlp_parser"
2020 motionpixels_decoder_select="bswapdsp"
2021 mp1_decoder_select="mpegaudio"
2022 mp1float_decoder_select="mpegaudio"
2023 mp2_decoder_select="mpegaudio"
2024 mp2float_decoder_select="mpegaudio"
2025 mp3_decoder_select="mpegaudio"
2026 mp3adu_decoder_select="mpegaudio"
2027 mp3adufloat_decoder_select="mpegaudio"
2028 mp3float_decoder_select="mpegaudio"
2029 mp3on4_decoder_select="mpegaudio"
2030 mp3on4float_decoder_select="mpegaudio"
2031 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2032 mpc8_decoder_select="mpegaudiodsp"
2033 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2034 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2035 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2036 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2037 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2038 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2039 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2040 mpeg4_encoder_select="h263_encoder"
2041 msa1_decoder_select="mss34dsp"
2042 msmpeg4v1_decoder_select="h263_decoder"
2043 msmpeg4v2_decoder_select="h263_decoder"
2044 msmpeg4v2_encoder_select="h263_encoder"
2045 msmpeg4v3_decoder_select="h263_decoder"
2046 msmpeg4v3_encoder_select="h263_encoder"
2047 mss2_decoder_select="error_resilience mpeg_er mpegvideo vc1_decoder"
2048 mts2_decoder_select="mss34dsp"
2049 mxpeg_decoder_select="mjpeg_decoder"
2050 nellymoser_decoder_select="mdct sinewin"
2051 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2052 nuv_decoder_select="idctdsp lzo"
2053 on2avc_decoder_select="mdct"
2054 opus_decoder_deps="avresample"
2055 opus_decoder_select="imdct15"
2056 png_decoder_deps="zlib"
2057 png_encoder_deps="zlib"
2058 png_encoder_select="huffyuvencdsp"
2059 prores_decoder_select="idctdsp"
2060 prores_encoder_select="fdctdsp"
2061 qcelp_decoder_select="lsp"
2062 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2063 ra_144_encoder_select="audio_frame_queue lpc"
2064 ralf_decoder_select="golomb"
2065 rscc_decoder_deps="zlib"
2066 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2067 rv10_encoder_select="h263_encoder"
2068 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2069 rv20_encoder_select="h263_encoder"
2070 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2071 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2072 screenpresso_decoder_deps="zlib"
2073 shorten_decoder_select="golomb"
2074 sipr_decoder_select="lsp"
2075 sp5x_decoder_select="mjpeg_decoder"
2076 svq1_decoder_select="hpeldsp"
2077 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2078 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2079 svq3_decoder_suggest="zlib"
2080 tak_decoder_select="audiodsp"
2081 tdsc_decoder_deps="zlib"
2082 tdsc_decoder_select="mjpeg_decoder"
2083 theora_decoder_select="vp3_decoder"
2084 thp_decoder_select="mjpeg_decoder"
2085 tiff_decoder_suggest="zlib"
2086 tiff_encoder_suggest="zlib"
2087 truehd_decoder_select="mlp_decoder"
2088 truemotion2_decoder_select="bswapdsp"
2089 truespeech_decoder_select="bswapdsp"
2090 tscc_decoder_deps="zlib"
2091 txd_decoder_select="texturedsp"
2092 twinvq_decoder_select="mdct lsp sinewin"
2093 utvideo_decoder_select="bswapdsp"
2094 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2095 vble_decoder_select="huffyuvdsp"
2096 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2097 vc1image_decoder_select="vc1_decoder"
2098 vorbis_decoder_select="mdct"
2099 vorbis_encoder_select="mdct"
2100 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2101 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2102 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2103 vp6a_decoder_select="vp6_decoder"
2104 vp6f_decoder_select="vp6_decoder"
2105 vp7_decoder_select="h264pred videodsp vp8dsp"
2106 vp8_decoder_select="h264pred videodsp vp8dsp"
2107 vp9_decoder_select="videodsp"
2108 webp_decoder_select="vp8_decoder"
2109 wmapro_decoder_select="mdct sinewin wma_freqs"
2110 wmav1_decoder_select="mdct sinewin wma_freqs"
2111 wmav1_encoder_select="mdct sinewin wma_freqs"
2112 wmav2_decoder_select="mdct sinewin wma_freqs"
2113 wmav2_encoder_select="mdct sinewin wma_freqs"
2114 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2115 wmv1_decoder_select="h263_decoder"
2116 wmv1_encoder_select="h263_encoder"
2117 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2118 wmv2_encoder_select="h263_encoder wmv2dsp"
2119 wmv3_decoder_select="vc1_decoder"
2120 wmv3image_decoder_select="wmv3_decoder"
2121 zerocodec_decoder_deps="zlib"
2122 zlib_decoder_deps="zlib"
2123 zlib_encoder_deps="zlib"
2124 zmbv_decoder_deps="zlib"
2125 zmbv_encoder_deps="zlib"
2126
2127 # hardware accelerators
2128 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2129 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2130 vaapi_deps="va_va_h"
2131 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2132 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2133 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2134
2135 h263_vaapi_hwaccel_deps="vaapi"
2136 h263_vaapi_hwaccel_select="h263_decoder"
2137 h264_d3d11va_hwaccel_deps="d3d11va"
2138 h264_d3d11va_hwaccel_select="h264_decoder"
2139 h264_dxva2_hwaccel_deps="dxva2"
2140 h264_dxva2_hwaccel_select="h264_decoder"
2141 h264_mmal_decoder_deps="mmal"
2142 h264_mmal_decoder_select="mmal"
2143 h264_mmal_hwaccel_deps="mmal"
2144 h264_omx_encoder_deps="omx"
2145 h264_qsv_hwaccel_deps="libmfx"
2146 h264_vaapi_hwaccel_deps="vaapi"
2147 h264_vaapi_hwaccel_select="h264_decoder"
2148 h264_vda_hwaccel_deps="vda"
2149 h264_vda_hwaccel_select="h264_decoder"
2150 h264_vda_old_hwaccel_deps="vda"
2151 h264_vda_old_hwaccel_select="h264_decoder"
2152 h264_vdpau_hwaccel_deps="vdpau"
2153 h264_vdpau_hwaccel_select="h264_decoder"
2154 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2155 hevc_d3d11va_hwaccel_select="hevc_decoder"
2156 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2157 hevc_dxva2_hwaccel_select="hevc_decoder"
2158 hevc_qsv_hwaccel_deps="libmfx"
2159 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2160 hevc_vdpau_hwaccel_select="hevc_decoder"
2161 mpeg1_vdpau_hwaccel_deps="vdpau"
2162 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2163 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2164 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2165 mpeg2_dxva2_hwaccel_deps="dxva2"
2166 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2167 mpeg2_mmal_decoder_deps="mmal"
2168 mpeg2_mmal_decoder_select="mmal"
2169 mpeg2_mmal_hwaccel_deps="mmal"
2170 mpeg2_qsv_hwaccel_deps="libmfx"
2171 mpeg2_vaapi_hwaccel_deps="vaapi"
2172 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2173 mpeg2_vdpau_hwaccel_deps="vdpau"
2174 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2175 mpeg4_omx_encoder_deps="omx"
2176 mpeg4_vaapi_hwaccel_deps="vaapi"
2177 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2178 mpeg4_vdpau_hwaccel_deps="vdpau"
2179 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2180 vc1_d3d11va_hwaccel_deps="d3d11va"
2181 vc1_d3d11va_hwaccel_select="vc1_decoder"
2182 vc1_dxva2_hwaccel_deps="dxva2"
2183 vc1_dxva2_hwaccel_select="vc1_decoder"
2184 vc1_mmal_decoder_deps="mmal"
2185 vc1_mmal_decoder_select="mmal"
2186 vc1_mmal_hwaccel_deps="mmal"
2187 vc1_qsv_hwaccel_deps="libmfx"
2188 vc1_vaapi_hwaccel_deps="vaapi"
2189 vc1_vaapi_hwaccel_select="vc1_decoder"
2190 vc1_vdpau_hwaccel_deps="vdpau"
2191 vc1_vdpau_hwaccel_select="vc1_decoder"
2192 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2193 vp8_vaapi_hwaccel_select="vp8_decoder"
2194 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2195 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2196 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2197 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2198
2199 # hardware-accelerated codecs
2200 nvenc_deps_any="dlopen LoadLibrary"
2201 nvenc_extralibs='$ldl'
2202 omx_deps="dlopen pthreads"
2203 omx_extralibs='$ldl'
2204 qsvdec_select="qsv"
2205 qsvenc_select="qsv"
2206 vaapi_encode_deps="vaapi"
2207
2208 hwupload_cuda_filter_deps="cuda"
2209 scale_npp_filter_deps="cuda libnpp"
2210
2211 h264_nvenc_encoder_deps="nvenc"
2212 h264_qsv_decoder_deps="libmfx"
2213 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2214 h264_qsv_encoder_deps="libmfx"
2215 h264_qsv_encoder_select="qsvenc"
2216 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2217 h264_vaapi_encoder_select="vaapi_encode golomb"
2218
2219 hevc_nvenc_encoder_deps="nvenc"
2220 hevc_qsv_decoder_deps="libmfx"
2221 hevc_qsv_encoder_deps="libmfx"
2222 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2223 hevc_qsv_encoder_select="qsvenc"
2224 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2225 hevc_vaapi_encoder_select="vaapi_encode golomb"
2226 mpeg2_qsv_decoder_deps="libmfx"
2227 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2228 mpeg2_qsv_encoder_deps="libmfx"
2229 mpeg2_qsv_encoder_select="qsvenc"
2230 vc1_qsv_decoder_deps="libmfx"
2231 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2232
2233 nvenc_h264_encoder_deps="nvenc"
2234 nvenc_hevc_encoder_deps="nvenc"
2235
2236 # parsers
2237 h264_parser_select="golomb h264dsp h264parse"
2238 hevc_parser_select="golomb"
2239 mpegvideo_parser_select="mpegvideo"
2240 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2241 vc1_parser_select="vc1dsp"
2242
2243 # bitstream_filters
2244 mjpeg2jpeg_bsf_select="jpegtables"
2245
2246 # external libraries
2247 libdcadec_decoder_deps="libdcadec"
2248 libfaac_encoder_deps="libfaac"
2249 libfaac_encoder_select="audio_frame_queue"
2250 libfdk_aac_decoder_deps="libfdk_aac"
2251 libfdk_aac_encoder_deps="libfdk_aac"
2252 libfdk_aac_encoder_select="audio_frame_queue"
2253 libgsm_decoder_deps="libgsm"
2254 libgsm_encoder_deps="libgsm"
2255 libgsm_ms_decoder_deps="libgsm"
2256 libgsm_ms_encoder_deps="libgsm"
2257 libilbc_decoder_deps="libilbc"
2258 libilbc_encoder_deps="libilbc"
2259 libkvazaar_encoder_deps="libkvazaar"
2260 libmp3lame_encoder_deps="libmp3lame"
2261 libmp3lame_encoder_select="audio_frame_queue"
2262 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2263 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2264 libopencore_amrnb_encoder_select="audio_frame_queue"
2265 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2266 libopenh264_decoder_deps="libopenh264"
2267 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2268 libopenh264_encoder_deps="libopenh264"
2269 libopenjpeg_decoder_deps="libopenjpeg"
2270 libopenjpeg_encoder_deps="libopenjpeg"
2271 libopus_decoder_deps="libopus"
2272 libopus_encoder_deps="libopus"
2273 libopus_encoder_select="audio_frame_queue"
2274 libschroedinger_decoder_deps="libschroedinger"
2275 libschroedinger_encoder_deps="libschroedinger"
2276 libspeex_decoder_deps="libspeex"
2277 libspeex_encoder_deps="libspeex"
2278 libspeex_encoder_select="audio_frame_queue"
2279 libtheora_encoder_deps="libtheora"
2280 libtwolame_encoder_deps="libtwolame"
2281 libvo_aacenc_encoder_deps="libvo_aacenc"
2282 libvo_aacenc_encoder_select="audio_frame_queue"
2283 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2284 libvorbis_encoder_deps="libvorbis"
2285 libvorbis_encoder_select="audio_frame_queue"
2286 libvpx_vp8_decoder_deps="libvpx"
2287 libvpx_vp8_encoder_deps="libvpx"
2288 libvpx_vp9_decoder_deps="libvpx"
2289 libvpx_vp9_encoder_deps="libvpx"
2290 libwavpack_encoder_deps="libwavpack"
2291 libwebp_encoder_deps="libwebp"
2292 libx262_encoder_deps="libx262"
2293 libx264_encoder_deps="libx264"
2294 libx265_encoder_deps="libx265"
2295 libxavs_encoder_deps="libxavs"
2296 libxvid_encoder_deps="libxvid mkstemp"
2297
2298 # demuxers / muxers
2299 ac3_demuxer_select="ac3_parser"
2300 asf_demuxer_select="riffdec"
2301 asf_muxer_select="riffenc"
2302 asf_stream_muxer_select="asf_muxer"
2303 avi_demuxer_select="iso_media riffdec"
2304 avi_muxer_select="riffenc"
2305 avisynth_demuxer_deps="avisynth"
2306 avisynth_demuxer_select="riffdec"
2307 caf_demuxer_select="iso_media riffdec"
2308 dash_muxer_select="mp4_muxer"
2309 dirac_demuxer_select="dirac_parser"
2310 dv_demuxer_select="dvprofile"
2311 dv_muxer_select="dvprofile"
2312 dxa_demuxer_select="riffdec"
2313 eac3_demuxer_select="ac3_parser"
2314 f4v_muxer_select="mov_muxer"
2315 flac_demuxer_select="flac_parser"
2316 hds_muxer_select="flv_muxer"
2317 hls_muxer_select="mpegts_muxer"
2318 ipod_muxer_select="mov_muxer"
2319 ismv_muxer_select="mov_muxer"
2320 matroska_audio_muxer_select="matroska_muxer"
2321 matroska_demuxer_select="iso_media riffdec"
2322 matroska_demuxer_suggest="bzlib lzo zlib"
2323 matroska_muxer_select="iso_media riffenc"
2324 mmf_muxer_select="riffenc"
2325 mov_demuxer_select="iso_media riffdec"
2326 mov_demuxer_suggest="zlib"
2327 mov_muxer_select="iso_media riffenc rtpenc_chain"
2328 mp3_demuxer_select="mpegaudio_parser"
2329 mp4_muxer_select="mov_muxer"
2330 mpegts_demuxer_select="iso_media"
2331 mpegts_muxer_select="adts_muxer latm_muxer"
2332 mpegtsraw_demuxer_select="mpegts_demuxer"
2333 mxf_d10_muxer_select="mxf_muxer"
2334 nut_muxer_select="riffenc"
2335 nuv_demuxer_select="riffdec"
2336 oga_muxer_select="ogg_muxer"
2337 ogg_demuxer_select="dirac_parse"
2338 opus_muxer_select="ogg_muxer"
2339 psp_muxer_select="mov_muxer"
2340 rtp_demuxer_select="sdp_demuxer"
2341 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2342 rtsp_demuxer_select="http_protocol rtpdec"
2343 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2344 sap_demuxer_select="sdp_demuxer"
2345 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2346 sdp_demuxer_select="rtpdec"
2347 smoothstreaming_muxer_select="ismv_muxer"
2348 spdif_muxer_select="aac_parser"
2349 spx_muxer_select="ogg_muxer"
2350 swf_demuxer_suggest="zlib"
2351 tak_demuxer_select="tak_parser"
2352 tg2_muxer_select="mov_muxer"
2353 tgp_muxer_select="mov_muxer"
2354 w64_demuxer_select="wav_demuxer"
2355 wav_demuxer_select="riffdec"
2356 wav_muxer_select="riffenc"
2357 webm_muxer_select="iso_media riffenc"
2358 webm_muxer_suggest="libopus_encoder libvorbis_encoder libvpx_vp8_encoder libvpx_vp9_encoder"
2359 wtv_demuxer_select="mpegts_demuxer riffdec"
2360 xmv_demuxer_select="riffdec"
2361 xwma_demuxer_select="riffdec"
2362
2363 # indevs / outdevs
2364 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2365 alsa_outdev_deps="alsa_asoundlib_h"
2366 avfoundation_indev_deps="AVFoundation_AVFoundation_h"
2367 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2368 dv1394_indev_deps="dv1394"
2369 dv1394_indev_select="dv_demuxer"
2370 fbdev_indev_deps="linux_fb_h"
2371 jack_indev_deps="jack_jack_h"
2372 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2373 libcdio_indev_deps="libcdio"
2374 libdc1394_indev_deps="libdc1394"
2375 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2376 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2377 pulse_indev_deps="libpulse"
2378 sndio_indev_deps="sndio_h"
2379 sndio_outdev_deps="sndio_h"
2380 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2381 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2382 vfwcap_indev_extralibs="-lavicap32"
2383 xcbgrab_indev_deps="libxcb"
2384
2385 # protocols
2386 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2387 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2388 ffrtmpcrypt_protocol_select="tcp_protocol"
2389 ffrtmphttp_protocol_deps="!librtmp_protocol"
2390 ffrtmphttp_protocol_select="http_protocol"
2391 gopher_protocol_select="network"
2392 http_protocol_select="tcp_protocol"
2393 httpproxy_protocol_select="tcp_protocol"
2394 https_protocol_select="tls_protocol"
2395 icecast_protocol_select="http_protocol"
2396 librtmp_protocol_deps="librtmp"
2397 librtmpe_protocol_deps="librtmp"
2398 librtmps_protocol_deps="librtmp"
2399 librtmpt_protocol_deps="librtmp"
2400 librtmpte_protocol_deps="librtmp"
2401 mmsh_protocol_select="http_protocol"
2402 mmst_protocol_select="network"
2403 rtmp_protocol_deps="!librtmp_protocol"
2404 rtmp_protocol_select="tcp_protocol"
2405 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2406 rtmps_protocol_deps="!librtmp_protocol"
2407 rtmps_protocol_select="tls_protocol"
2408 rtmpt_protocol_select="ffrtmphttp_protocol"
2409 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2410 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2411 rtp_protocol_select="udp_protocol"
2412 sctp_protocol_deps="struct_sctp_event_subscribe"
2413 sctp_protocol_select="network"
2414 srtp_protocol_select="rtp_protocol srtp"
2415 tcp_protocol_select="network"
2416 tls_gnutls_protocol_deps="gnutls"
2417 tls_gnutls_protocol_select="tcp_protocol"
2418 tls_openssl_protocol_deps="openssl !tls_gnutls_protocol"
2419 tls_openssl_protocol_select="tcp_protocol"
2420 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2421 udp_protocol_select="network"
2422 unix_protocol_deps="sys_un_h"
2423 unix_protocol_select="network"
2424
2425 # filters
2426 blackframe_filter_deps="gpl"
2427 boxblur_filter_deps="gpl"
2428 bs2b_filter_deps="libbs2b"
2429 cropdetect_filter_deps="gpl"
2430 deinterlace_qsv_filter_deps="libmfx"
2431 delogo_filter_deps="gpl"
2432 drawtext_filter_deps="libfreetype"
2433 frei0r_filter_deps="frei0r dlopen"
2434 frei0r_filter_extralibs='$ldl'
2435 frei0r_src_filter_deps="frei0r dlopen"
2436 frei0r_src_filter_extralibs='$ldl'
2437 hdcd_filter_deps="libhdcd"
2438 hqdn3d_filter_deps="gpl"
2439 interlace_filter_deps="gpl"
2440 ocv_filter_deps="libopencv"
2441 resample_filter_deps="avresample"
2442 scale_filter_deps="swscale"
2443 scale_qsv_filter_deps="libmfx"
2444 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2445
2446 # examples
2447 decode_audio_example_deps="avcodec avutil"
2448 decode_video_example_deps="avcodec avutil"
2449 encode_audio_example_deps="avcodec avutil"
2450 encode_video_example_deps="avcodec avutil"
2451 filter_audio_example_deps="avfilter avutil"
2452 metadata_example_deps="avformat avutil"
2453 output_example_deps="avcodec avformat avutil swscale"
2454 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2455 transcode_aac_example_deps="avcodec avformat avresample"
2456
2457 # libraries, in linking order
2458 avcodec_deps="avutil"
2459 avdevice_deps="avformat avcodec avutil"
2460 avfilter_deps="avutil"
2461 avformat_deps="avcodec avutil"
2462 avresample_deps="avutil"
2463 swscale_deps="avutil"
2464
2465 # programs
2466 avconv_deps="avcodec avfilter avformat avresample swscale"
2467 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2468                fps_filter null_filter resample_filter scale_filter
2469                trim_filter"
2470 avplay_deps="avcodec avfilter avformat avresample sdl"
2471 avplay_libs='$sdl_libs'
2472 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2473 avprobe_deps="avcodec avformat"
2474
2475 # documentation
2476 pod2man_deps="doc"
2477 texi2html_deps="doc"
2478
2479 # default parameters
2480
2481 logfile="config.log"
2482
2483 # installation paths
2484 prefix_default="/usr/local"
2485 bindir_default='${prefix}/bin'
2486 datadir_default='${prefix}/share/avconv'
2487 docdir_default='${prefix}/share/doc/libav'
2488 incdir_default='${prefix}/include'
2489 libdir_default='${prefix}/lib'
2490 mandir_default='${prefix}/share/man'
2491 shlibdir_default="$libdir_default"
2492
2493 # toolchain
2494 ar_default="ar"
2495 cc_default="gcc"
2496 host_cc_default="gcc"
2497 cp_f="cp -f"
2498 ln_s="ln -s -f"
2499 nm_default="nm -g"
2500 objformat="elf"
2501 pkg_config_default=pkg-config
2502 ranlib="ranlib"
2503 strip="strip"
2504 version_script='--version-script'
2505 yasmexe="yasm"
2506
2507 # machine
2508 arch_default=$(uname -m)
2509 cpu="generic"
2510 intrinsics="none"
2511
2512 # OS
2513 target_os_default=$(tolower $(uname -s))
2514 host_os=$target_os_default
2515
2516 # configurable options
2517 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2518
2519 enable asm
2520 enable debug
2521 enable doc
2522 enable faan faandct faanidct
2523 enable optimizations
2524 enable safe_bitstream_reader
2525 enable static
2526 enable swscale_alpha
2527 enable valgrind_backtrace
2528
2529 # By default, enable only those hwaccels that have no external dependencies.
2530 enable d3d11va dxva2 vda vdpau
2531
2532 # build settings
2533 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2534 LIBPREF="lib"
2535 LIBSUF=".a"
2536 FULLNAME='$(NAME)$(BUILDSUF)'
2537 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2538 SLIBPREF="lib"
2539 SLIBSUF=".so"
2540 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2541 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2542 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2543 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2544 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2545 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2546 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2547
2548 asflags_filter=echo
2549 cflags_filter=echo
2550 ldflags_filter=echo
2551
2552 AS_C='-c'
2553 AS_O='-o $@'
2554 CC_C='-c'
2555 CC_E='-E -o $@'
2556 CC_O='-o $@'
2557 OBJCC_C='-c'
2558 OBJCC_E='-E -o $@'
2559 OBJCC_O='-o $@'
2560 LD_O='-o $@'
2561 LD_LIB='-l%'
2562 LD_PATH='-L'
2563 HOSTCC_C='-c'
2564 HOSTCC_E='-E -o $@'
2565 HOSTCC_O='-o $@'
2566 HOSTLD_O='-o $@'
2567
2568 host_libs='-lm'
2569 host_cflags_filter=echo
2570 host_ldflags_filter=echo
2571
2572 target_path='$(CURDIR)'
2573
2574 # since the object filename is not given with the -MM flag, the compiler
2575 # is only able to print the basename, and we must add the path ourselves
2576 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2577 DEPFLAGS='-MM'
2578
2579 # find source path
2580 if test -f configure; then
2581     source_path=.
2582 else
2583     source_path=$(cd $(dirname "$0"); pwd)
2584     echo "$source_path" | grep -q '[[:blank:]]' &&
2585         die "Out of tree builds are impossible with whitespace in source path."
2586     test -e "$source_path/config.h" &&
2587         die "Out of tree builds are impossible with config.h in source dir."
2588 fi
2589
2590 for v in "$@"; do
2591     r=${v#*=}
2592     l=${v%"$r"}
2593     r=$(sh_quote "$r")
2594     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2595 done
2596
2597 find_things(){
2598     thing=$1
2599     pattern=$2
2600     file=$source_path/$3
2601     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2602 }
2603
2604 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2605 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2606 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2607 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2608 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2609 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2610 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2611 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2612 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2613
2614 find_things_extern(){
2615     thing=$1
2616     pattern=$2
2617     file=$source_path/$3
2618     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2619 }
2620
2621 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2622 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2623
2624 ALL_COMPONENTS="
2625     $BSF_LIST
2626     $DECODER_LIST
2627     $DEMUXER_LIST
2628     $ENCODER_LIST
2629     $FILTER_LIST
2630     $HWACCEL_LIST
2631     $INDEV_LIST
2632     $MUXER_LIST
2633     $OUTDEV_LIST
2634     $PARSER_LIST
2635     $PROTOCOL_LIST
2636 "
2637
2638 for n in $COMPONENT_LIST; do
2639     v=$(toupper ${n%s})_LIST
2640     eval enable \$$v
2641     eval ${n}_if_any="\$$v"
2642 done
2643
2644 enable $ARCH_EXT_LIST
2645
2646 die_unknown(){
2647     echo "Unknown option \"$1\"."
2648     echo "See $0 --help for available options."
2649     exit 1
2650 }
2651
2652 print_3_columns() {
2653     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2654 }
2655
2656 show_list() {
2657     suffix=_$1
2658     shift
2659     echo $* | sed s/$suffix//g | print_3_columns
2660     exit 0
2661 }
2662
2663 rand_list(){
2664     IFS=', '
2665     set -- $*
2666     unset IFS
2667     for thing; do
2668         comp=${thing%:*}
2669         prob=${thing#$comp}
2670         prob=${prob#:}
2671         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2672         echo "prob ${prob:-0.5}"
2673         printf '%s\n' $comp
2674     done
2675 }
2676
2677 do_random(){
2678     action=$1
2679     shift
2680     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2681     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2682 }
2683
2684 for opt do
2685     optval="${opt#*=}"
2686     case "$opt" in
2687         --extra-ldflags=*)
2688             add_ldflags $optval
2689         ;;
2690         --extra-ldexeflags=*)
2691             add_ldexeflags $optval
2692         ;;
2693         --extra-libs=*)
2694             add_extralibs $optval
2695         ;;
2696         --disable-devices)
2697             disable $INDEV_LIST $OUTDEV_LIST
2698         ;;
2699         --enable-debug=*)
2700             debuglevel="$optval"
2701         ;;
2702         --disable-programs)
2703             disable $PROGRAM_LIST
2704         ;;
2705         --disable-everything)
2706             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2707         ;;
2708         --disable-all)
2709             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2710             disable $LIBRARY_LIST $PROGRAM_LIST doc
2711         ;;
2712         --enable-random|--disable-random)
2713             action=${opt%%-random}
2714             do_random ${action#--} $COMPONENT_LIST
2715         ;;
2716         --enable-random=*|--disable-random=*)
2717             action=${opt%%-random=*}
2718             do_random ${action#--} $optval
2719         ;;
2720         --enable-*=*|--disable-*=*)
2721             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2722             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2723             eval list=\$$(toupper $thing)_LIST
2724             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2725             $action $(filter "$name" $list)
2726         ;;
2727         --enable-avserver|--disable-avserver*)
2728             warn "avserver has been removed, the ${opt} option is only"\
2729                  "provided for compatibility and will be removed in the future"
2730         ;;
2731         --enable-?*|--disable-?*)
2732             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2733             if is_in $option $COMPONENT_LIST; then
2734                 test $action = disable && action=unset
2735                 eval $action \$$(toupper ${option%s})_LIST
2736             elif is_in $option $CMDLINE_SELECT; then
2737                 $action $option
2738             else
2739                 die_unknown $opt
2740             fi
2741         ;;
2742         --list-*)
2743             NAME="${opt#--list-}"
2744             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2745             NAME=${NAME%s}
2746             eval show_list $NAME \$$(toupper $NAME)_LIST
2747         ;;
2748         --help|-h) show_help
2749         ;;
2750         --quiet|-q) quiet=yes
2751         ;;
2752         *)
2753             optname="${opt%%=*}"
2754             optname="${optname#--}"
2755             optname=$(echo "$optname" | sed 's/-/_/g')
2756             if is_in $optname $CMDLINE_SET; then
2757                 eval $optname='$optval'
2758             elif is_in $optname $CMDLINE_APPEND; then
2759                 append $optname "$optval"
2760             else
2761                 die_unknown $opt
2762             fi
2763         ;;
2764     esac
2765 done
2766
2767 for e in $env; do
2768     eval "export $e"
2769 done
2770
2771 disabled logging && logfile=/dev/null
2772
2773 # Die early if licensing-related configure options are incompatible.
2774 die_license_disabled() {
2775     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2776 }
2777
2778 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
2779 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2780 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2781
2782 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2783
2784 # Disable all the library-specific components if the library itself
2785 # is disabled, see AVCODEC_LIST and following _LIST variables.
2786
2787 disable_components(){
2788     disabled ${1} && disable $(
2789         eval components="\$$(toupper ${1})_COMPONENTS"
2790         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2791     )
2792 }
2793
2794 map 'disable_components $v' $LIBRARY_LIST
2795
2796 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2797 set >> $logfile
2798
2799 case "$toolchain" in
2800     *-asan)
2801         cc_default="${toolchain%-asan}"
2802         add_cflags  -fsanitize=address
2803         add_ldflags -fsanitize=address
2804     ;;
2805     *-msan)
2806         cc_default="${toolchain%-msan}"
2807         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2808         add_ldflags -fsanitize=memory
2809     ;;
2810     *-tsan)
2811         cc_default="${toolchain%-tsan}"
2812         add_cflags  -fsanitize=thread -pie
2813         add_ldflags -fsanitize=thread -pie
2814         case "$toolchain" in
2815             gcc-tsan)
2816                 add_cflags  -fPIC
2817                 add_ldflags -fPIC
2818                 ;;
2819         esac
2820     ;;
2821     *-usan)
2822         cc_default="${toolchain%-usan}"
2823         add_cflags  -fsanitize=undefined
2824         add_ldflags -fsanitize=undefined
2825         case "$toolchain" in
2826             clang-usan)
2827                 add_cflags -O1
2828                 ;;
2829         esac
2830     ;;
2831     valgrind-*)
2832         target_exec_default="valgrind"
2833         case "$toolchain" in
2834             valgrind-massif)
2835                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2836                 ;;
2837             valgrind-memcheck)
2838                 target_exec_args="--track-origins=yes --leak-check=full"
2839                 ;;
2840         esac
2841     ;;
2842     msvc)
2843         # Check whether the current MSVC version needs the C99 converter.
2844         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2845         # support enough of C99 to build libav. Default to the new
2846         # behaviour if the regexp was unable to match anything, since this
2847         # successfully parses the version number of existing supported
2848         # versions that require the converter (MSVC 2010 and 2012).
2849         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2850         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2851             cc_default="cl"
2852         else
2853             cc_default="c99wrap cl"
2854         fi
2855         ld_default="$source_path/compat/windows/mslink"
2856         nm_default="dumpbin -symbols"
2857         ar_default="lib"
2858         case "$arch" in
2859         arm*)
2860             as_default="armasm"
2861             ;;
2862         esac
2863         target_os_default="win32"
2864         # Use a relative path for TMPDIR. This makes sure all the
2865         # ffconf temp files are written with a relative path, avoiding
2866         # issues with msys/win32 path conversion for MSVC parameters
2867         # such as -Fo<file> or -out:<file>.
2868         TMPDIR=.
2869     ;;
2870     icl)
2871         cc_default="icl"
2872         ld_default="xilink"
2873         nm_default="dumpbin -symbols"
2874         ar_default="xilib"
2875         target_os_default="win32"
2876         TMPDIR=.
2877     ;;
2878     gcov)
2879         add_cflags  -fprofile-arcs -ftest-coverage
2880         add_ldflags -fprofile-arcs -ftest-coverage
2881     ;;
2882     llvm-cov)
2883         add_cflags -fprofile-arcs -ftest-coverage
2884         add_ldflags --coverage
2885     ;;
2886     hardened)
2887         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2888         add_cflags   -fno-strict-overflow -fstack-protector-all
2889         add_ldflags  -Wl,-z,relro -Wl,-z,now
2890     ;;
2891     ?*)
2892         die "Unknown toolchain $toolchain"
2893     ;;
2894 esac
2895
2896 test -n "$cross_prefix" && enable cross_compile
2897
2898 if enabled cross_compile; then
2899     test -n "$arch" && test -n "$target_os" ||
2900         die "Must specify target arch and OS when cross-compiling"
2901 fi
2902
2903 ar_default="${cross_prefix}${ar_default}"
2904 cc_default="${cross_prefix}${cc_default}"
2905 occ_default="${cross_prefix}${occ_default}"
2906 nm_default="${cross_prefix}${nm_default}"
2907 pkg_config_default="${cross_prefix}${pkg_config_default}"
2908 ranlib="${cross_prefix}${ranlib}"
2909 strip="${cross_prefix}${strip}"
2910
2911 sysinclude_default="${sysroot}/usr/include"
2912
2913 set_default arch cc pkg_config sysinclude target_exec target_os
2914 enabled cross_compile || host_cc_default=$cc
2915 set_default host_cc
2916
2917 if ! $pkg_config --version >/dev/null 2>&1; then
2918     warn "$pkg_config not found, library detection may fail."
2919     pkg_config=false
2920 fi
2921
2922 exesuf() {
2923     case $1 in
2924         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2925     esac
2926 }
2927
2928 EXESUF=$(exesuf $target_os)
2929 HOSTEXESUF=$(exesuf $host_os)
2930
2931 # set temporary file name
2932 : ${TMPDIR:=$TEMPDIR}
2933 : ${TMPDIR:=$TMP}
2934 : ${TMPDIR:=/tmp}
2935
2936 if ! check_cmd mktemp -u XXXXXX; then
2937     # simple replacement for missing mktemp
2938     # NOT SAFE FOR GENERAL USE
2939     mktemp(){
2940         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2941     }
2942 fi
2943
2944 tmpfile(){
2945     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2946         (set -C; exec > $tmp) 2>/dev/null ||
2947         die "Unable to create temporary file in $TMPDIR."
2948     append TMPFILES $tmp
2949     eval $1=$tmp
2950 }
2951
2952 trap 'rm -f -- $TMPFILES' EXIT
2953
2954 tmpfile TMPASM .asm
2955 tmpfile TMPC   .c
2956 tmpfile TMPE   $EXESUF
2957 tmpfile TMPH   .h
2958 tmpfile TMPO   .o
2959 tmpfile TMPS   .S
2960 tmpfile TMPSH  .sh
2961 tmpfile TMPV   .ver
2962
2963 unset -f mktemp
2964
2965 chmod +x $TMPE
2966
2967 # make sure we can execute files in $TMPDIR
2968 cat > $TMPSH 2>> $logfile <<EOF
2969 #! /bin/sh
2970 EOF
2971 chmod +x $TMPSH >> $logfile 2>&1
2972 if ! $TMPSH >> $logfile 2>&1; then
2973     cat <<EOF
2974 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2975 variable to another directory and make sure that it is not mounted noexec.
2976 EOF
2977     die "Sanity test failed."
2978 fi
2979
2980 armasm_flags(){
2981     for flag; do
2982         case $flag in
2983             # Filter out MSVC cl.exe options from cflags that shouldn't
2984             # be passed to gas-preprocessor
2985             -M[TD]*)                                            ;;
2986             *)                  echo $flag                      ;;
2987         esac
2988    done
2989 }
2990
2991 ccc_flags(){
2992     for flag; do
2993         case $flag in
2994             -std=c99)           echo -c99                       ;;
2995             -mcpu=*)            echo -arch ${flag#*=}           ;;
2996             -mieee)             echo -ieee                      ;;
2997             -O*|-fast)          echo $flag                      ;;
2998             -fno-math-errno)    echo -assume nomath_errno       ;;
2999             -g)                 echo -g3                        ;;
3000             -Wall)              echo -msg_enable level2         ;;
3001             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3002             -Wl,*)              echo $flag                      ;;
3003             -f*|-W*)                                            ;;
3004             *)                  echo $flag                      ;;
3005         esac
3006    done
3007 }
3008
3009 cparser_flags(){
3010     for flag; do
3011         case $flag in
3012             -Wno-switch)             echo -Wno-switch-enum ;;
3013             -Wno-format-zero-length) ;;
3014             -Wdisabled-optimization) ;;
3015             -Wno-pointer-sign)       echo -Wno-other ;;
3016             *)                       echo $flag ;;
3017         esac
3018     done
3019 }
3020
3021 msvc_common_flags(){
3022     for flag; do
3023         case $flag in
3024             # In addition to specifying certain flags under the compiler
3025             # specific filters, they must be specified here as well or else the
3026             # generic catch all at the bottom will print the original flag.
3027             -Wall)                ;;
3028             -std=c99)             ;;
3029             # Common flags
3030             -fomit-frame-pointer) ;;
3031             -g)                   echo -Z7 ;;
3032             -fno-math-errno)      ;;
3033             -fno-common)          ;;
3034             -fno-signed-zeros)    ;;
3035             -fPIC)                ;;
3036             -mthumb)              ;;
3037             -march=*)             ;;
3038             -lz)                  echo zlib.lib ;;
3039             -lavifil32)           echo vfw32.lib ;;
3040             -lavicap32)           echo vfw32.lib user32.lib ;;
3041             -lx264)               echo libx264.lib ;;
3042             -l*)                  echo ${flag#-l}.lib ;;
3043             -L*)                  echo -libpath:${flag#-L} ;;
3044             *)                    echo $flag ;;
3045         esac
3046     done
3047 }
3048
3049 msvc_flags(){
3050     msvc_common_flags "$@"
3051     for flag; do
3052         case $flag in
3053             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3054                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3055                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3056                                        -wd4273 -wd4554 -wd4701 ;;
3057         esac
3058     done
3059 }
3060
3061 icl_flags(){
3062     msvc_common_flags "$@"
3063     for flag; do
3064         case $flag in
3065             # Despite what Intel's documentation says -Wall, which is supported
3066             # on Windows, does enable remarks so disable them here.
3067             -Wall)                echo $flag -Qdiag-disable:remark ;;
3068             -std=c99)             echo -Qstd=c99 ;;
3069         esac
3070     done
3071 }
3072
3073 pgi_flags(){
3074     for flag; do
3075         case $flag in
3076             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3077             -fomit-frame-pointer) echo -Mnoframe ;;
3078             -g)                   echo -gopt ;;
3079             *)                    echo $flag ;;
3080         esac
3081     done
3082 }
3083
3084 suncc_flags(){
3085     for flag; do
3086         case $flag in
3087             -march=*|-mcpu=*)
3088                 case "${flag#*=}" in
3089                     native)                   echo -xtarget=native       ;;
3090                     v9|niagara)               echo -xarch=sparc          ;;
3091                     ultrasparc)               echo -xarch=sparcvis       ;;
3092                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3093                     i586|pentium)             echo -xchip=pentium        ;;
3094                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3095                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3096                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3097                     pentium4*)          echo -xtarget=pentium4           ;;
3098                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3099                     *-sse3)             echo -xarch=sse3                 ;;
3100                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3101                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3102                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3103                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3104                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3105                     k8|opteron|athlon64|athlon-fx)
3106                                                echo -xarch=sse2a         ;;
3107                     athlon*)                   echo -xarch=pentium_proa  ;;
3108                 esac
3109                 ;;
3110             -std=c99)             echo -xc99              ;;
3111             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3112             -fPIC)                echo -KPIC -xcode=pic32 ;;
3113             -W*,*)                echo $flag              ;;
3114             -f*-*|-W*|-mimpure-text)                      ;;
3115             -shared)              echo -G                 ;;
3116             *)                    echo $flag              ;;
3117         esac
3118     done
3119 }
3120
3121 tms470_flags(){
3122     for flag; do
3123         case $flag in
3124             -march=*|-mcpu=*)
3125                 case "${flag#*=}" in
3126                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3127                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3128                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3129                     armv6*|arm11*)          echo -mv=6   ;;
3130                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3131                                             echo -mv=5e  ;;
3132                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3133                 esac
3134                 ;;
3135             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3136             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3137             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3138             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3139             -msoft-float)   echo --float_support=vfplib       ;;
3140             -O[0-3]|-mf=*)  echo $flag                        ;;
3141             -g)             echo -g -mn                       ;;
3142             -pds=*)         echo $flag                        ;;
3143             -D*|-I*)        echo $flag                        ;;
3144             --gcc|--abi=*)  echo $flag                        ;;
3145             -me)            echo $flag                        ;;
3146         esac
3147     done
3148 }
3149
3150 probe_cc(){
3151     pfx=$1
3152     _cc=$2
3153
3154     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3155     unset _ld_o _ldflags _ld_lib _ld_path
3156     unset _depflags _DEPCMD _DEPFLAGS
3157     _flags_filter=echo
3158
3159     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3160         _type=llvm_gcc
3161         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3162         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3163         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3164         _cflags_speed='-O3'
3165         _cflags_size='-Os'
3166     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3167         _type=gcc
3168         gcc_version=$($_cc --version | head -n1)
3169         gcc_basever=$($_cc -dumpversion)
3170         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3171         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3172         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3173         if ! $_cc -dumpversion | grep -q '^2\.'; then
3174             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3175         fi
3176         _cflags_speed='-O3'
3177         _cflags_size='-Os'
3178     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3179         _type=icc
3180         _ident=$($_cc --version | head -n1)
3181         _depflags='-MMD'
3182         _cflags_speed='-O3'
3183         _cflags_size='-Os'
3184         _cflags_noopt='-O1'
3185     elif $_cc -v 2>&1 | grep -q xlc; then
3186         _type=xlc
3187         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3188         _cflags_speed='-O5'
3189         _cflags_size='-O5 -qcompact'
3190     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3191         _type=ccc
3192         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3193         _DEPFLAGS='-M'
3194         _cflags_speed='-fast'
3195         _cflags_size='-O1'
3196         _flags_filter=ccc_flags
3197     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3198         test -d "$sysroot" || die "No valid sysroot specified."
3199         _type=armcc
3200         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3201         armcc_conf="$PWD/armcc.conf"
3202         $_cc --arm_linux_configure                 \
3203              --arm_linux_config_file="$armcc_conf" \
3204              --configure_sysroot="$sysroot"        \
3205              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3206              die "Error creating armcc configuration file."
3207         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3208         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3209         as_default="${cross_prefix}gcc"
3210         _depflags='-MMD'
3211         _cflags_speed='-O3'
3212         _cflags_size='-Os'
3213     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3214         _type=tms470
3215         _ident=$($_cc -version | head -n1 | tr -s ' ')
3216         _flags='--gcc --abi=eabi -me'
3217         _cc_e='-ppl -fe=$@'
3218         _cc_o='-fe=$@'
3219         _depflags='-ppa -ppd=$(@:.o=.d)'
3220         _cflags_speed='-O3 -mf=5'
3221         _cflags_size='-O3 -mf=2'
3222         _flags_filter=tms470_flags
3223     elif $_cc -v 2>&1 | grep -q clang; then
3224         _type=clang
3225         _ident=$($_cc --version 2>/dev/null | head -n1)
3226         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3227         _cflags_speed='-O3'
3228         _cflags_size='-Os'
3229     elif $_cc -V 2>&1 | grep -q Sun; then
3230         _type=suncc
3231         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3232         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3233         _DEPFLAGS='-xM1 -xc99'
3234         _ldflags='-std=c99'
3235         _cflags_speed='-O5'
3236         _cflags_size='-O5 -xspace'
3237         _flags_filter=suncc_flags
3238     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3239         _type=pathscale
3240         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3241         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3242         _cflags_speed='-O2'
3243         _cflags_size='-Os'
3244         _flags_filter='filter_out -Wdisabled-optimization'
3245     elif $_cc -v 2>&1 | grep -q Open64; then
3246         _type=open64
3247         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3248         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3249         _cflags_speed='-O2'
3250         _cflags_size='-Os'
3251         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3252     elif $_cc -V 2>&1 | grep -q Portland; then
3253         _type=pgi
3254         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3255         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3256         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3257         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3258         _cflags_noopt="-O1"
3259         _flags_filter=pgi_flags
3260     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3261         _type=armasm
3262         _ident=$($_cc | head -n1)
3263         # 4509: "This form of conditional instruction is deprecated"
3264         _flags="-nologo -ignore 4509"
3265         _flags_filter=armasm_flags
3266     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3267         _type=msvc
3268         _ident=$($_cc 2>&1 | head -n1)
3269         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3270         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3271         _cflags_speed="-O2"
3272         _cflags_size="-O1"
3273         if $_cc -nologo- 2>&1 | grep -q Linker; then
3274             _ld_o='-out:$@'
3275         else
3276             _ld_o='-Fe$@'
3277         fi
3278         _cc_o='-Fo$@'
3279         _cc_e='-P -Fi$@'
3280         _flags_filter=msvc_flags
3281         _ld_lib='lib%.a'
3282         _ld_path='-libpath:'
3283         _flags='-nologo'
3284     elif $_cc 2>&1 | grep -q Intel; then
3285         _type=icl
3286         _ident=$($_cc 2>&1 | head -n1)
3287         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3288         # Not only is O3 broken on 13.x+ but it is slower on all previous
3289         # versions (tested) as well.
3290         _cflags_speed="-O2"
3291         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3292         if $_cc 2>&1 | grep -q Linker; then
3293             _ld_o='-out:$@'
3294         else
3295             _ld_o='-Fe$@'
3296         fi
3297         _cc_o='-Fo$@'
3298         _cc_e='-P'
3299         _flags_filter=icl_flags
3300         _ld_lib='lib%.a'
3301         _ld_path='-libpath:'
3302         # -Qdiag-error to make icl error when seeing certain unknown arguments
3303         _flags='-nologo -Qdiag-error:4044,10157'
3304         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3305         # with MSVC which enables it by default.
3306         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3307     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3308         # lld can emulate multiple different linkers; in ms link.exe mode,
3309         # the -? parameter gives the help output which contains an identifyable
3310         # string, while it gives an error in other modes.
3311         _type=lld-link
3312         # The link.exe mode doesn't have a switch for getting the version,
3313         # but we can force it back to gnu mode and get the version from there.
3314         _ident=$($_cc -flavor gnu --version 2>/dev/null)
3315         _ld_o='-out:$@'
3316         _flags_filter=msvc_flags
3317         _ld_lib='lib%.a'
3318         _ld_path='-libpath:'
3319     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3320         _type=cparser
3321         _ident=$($_cc --version | head -n1)
3322         _depflags='-MMD'
3323         _cflags_speed='-O4'
3324         _cflags_size='-O2'
3325         _flags_filter=cparser_flags
3326     fi
3327
3328     eval ${pfx}_type=\$_type
3329     eval ${pfx}_ident=\$_ident
3330 }
3331
3332 set_ccvars(){
3333     eval ${1}_C=\${_cc_c-\${${1}_C}}
3334     eval ${1}_E=\${_cc_e-\${${1}_E}}
3335     eval ${1}_O=\${_cc_o-\${${1}_O}}
3336
3337     if [ -n "$_depflags" ]; then
3338         eval ${1}_DEPFLAGS=\$_depflags
3339     else
3340         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3341         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3342         eval DEP${1}FLAGS=\$_flags
3343     fi
3344 }
3345
3346 probe_cc cc "$cc"
3347 cflags_filter=$_flags_filter
3348 cflags_speed=$_cflags_speed
3349 cflags_size=$_cflags_size
3350 cflags_noopt=$_cflags_noopt
3351 add_cflags $_flags $_cflags
3352 cc_ldflags=$_ldflags
3353 set_ccvars CC
3354
3355 probe_cc hostcc "$host_cc"
3356 host_cflags_filter=$_flags_filter
3357 add_host_cflags  $_flags $_cflags
3358 set_ccvars HOSTCC
3359
3360 test -n "$cc_type" && enable $cc_type ||
3361     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3362
3363 : ${as_default:=$cc}
3364 : ${objcc_default:=$cc}
3365 : ${dep_cc_default:=$cc}
3366 : ${ld_default:=$cc}
3367 : ${host_ld_default:=$host_cc}
3368 set_default ar as objcc dep_cc ld host_ld
3369
3370 probe_cc as "$as"
3371 asflags_filter=$_flags_filter
3372 add_asflags $_flags $_cflags
3373 set_ccvars AS
3374
3375 probe_cc objcc "$objcc"
3376 objcflags_filter=$_flags_filter
3377 add_objcflags $_flags $_cflags
3378 set_ccvars OBJC
3379
3380 probe_cc ld "$ld"
3381 ldflags_filter=$_flags_filter
3382 add_ldflags $_flags $_ldflags
3383 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3384 LD_O=${_ld_o-$LD_O}
3385 LD_LIB=${_ld_lib-$LD_LIB}
3386 LD_PATH=${_ld_path-$LD_PATH}
3387
3388 probe_cc hostld "$host_ld"
3389 host_ldflags_filter=$_flags_filter
3390 add_host_ldflags $_flags $_ldflags
3391 HOSTLD_O=${_ld_o-$HOSTLD_O}
3392
3393 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3394     probe_cc depcc "$dep_cc"
3395     CCDEP=${_DEPCMD:-$DEPCMD}
3396     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3397     DEPCCFLAGS=$_flags
3398 fi
3399
3400 if $ar 2>&1 | grep -q Microsoft; then
3401     arflags="-nologo"
3402     ar_o='-out:$@'
3403 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3404     arflags="rq"
3405     ar_o='$@'
3406 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3407     arflags='-Xany -r -c'
3408     ar_o='$@'
3409 else
3410     arflags="rc"
3411     ar_o='$@'
3412 fi
3413
3414 add_cflags $extra_cflags
3415 add_objcflags $extra_objcflags
3416 add_asflags $extra_cflags
3417
3418 if test -n "$sysroot"; then
3419     case "$cc_type" in
3420         gcc|llvm_gcc|clang)
3421             add_cppflags --sysroot="$sysroot"
3422             add_ldflags --sysroot="$sysroot"
3423         ;;
3424         tms470)
3425             add_cppflags -I"$sysinclude"
3426             add_ldflags  --sysroot="$sysroot"
3427         ;;
3428     esac
3429 fi
3430
3431 if test "$cpu" = host; then
3432     enabled cross_compile &&
3433         die "--cpu=host makes no sense when cross-compiling."
3434
3435     case "$cc_type" in
3436         gcc|llvm_gcc)
3437             check_native(){
3438                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3439                 sed -n "/cc1.*$1=/{
3440                             s/.*$1=\\([^ ]*\\).*/\\1/
3441                             p
3442                             q
3443                         }" $TMPE
3444             }
3445             cpu=$(check_native -march || check_native -mcpu)
3446         ;;
3447     esac
3448
3449     test "${cpu:-host}" = host &&
3450         die "--cpu=host not supported with compiler $cc"
3451 fi
3452
3453 # Deal with common $arch aliases
3454 case "$arch" in
3455     aarch64|arm64)
3456         arch="aarch64"
3457     ;;
3458     arm*)
3459         arch="arm"
3460     ;;
3461     mips*|IP*)
3462         case "$arch" in
3463         *el)
3464             add_cppflags -EL
3465             add_ldflags -EL
3466         ;;
3467         *eb)
3468             add_cppflags -EB
3469             add_ldflags -EB
3470         ;;
3471         esac
3472         arch="mips"
3473     ;;
3474     parisc*|hppa*)
3475         arch="parisc"
3476     ;;
3477     "Power Macintosh"|ppc*|powerpc*)
3478         arch="ppc"
3479     ;;
3480     s390|s390x)
3481         arch="s390"
3482     ;;
3483     sh4|sh)
3484         arch="sh4"
3485     ;;
3486     sun4u|sparc*)
3487         arch="sparc"
3488     ;;
3489     tilegx|tile-gx)
3490         arch="tilegx"
3491     ;;
3492     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3493         arch="x86"
3494     ;;
3495 esac
3496
3497 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3498 enable $arch
3499
3500 # Add processor-specific flags
3501 if enabled aarch64; then
3502
3503     case $cpu in
3504         armv*)
3505             cpuflags="-march=$cpu"
3506         ;;
3507         *)
3508             cpuflags="-mcpu=$cpu"
3509         ;;
3510     esac
3511
3512 elif enabled alpha; then
3513
3514     cpuflags="-mcpu=$cpu"
3515
3516 elif enabled arm; then
3517
3518     check_arm_arch() {
3519         check_cpp_condition stddef.h \
3520             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3521             $cpuflags
3522     }
3523
3524     probe_arm_arch() {
3525         if   check_arm_arch 4;        then echo armv4
3526         elif check_arm_arch 4T;       then echo armv4t
3527         elif check_arm_arch 5;        then echo armv5
3528         elif check_arm_arch 5E;       then echo armv5e
3529         elif check_arm_arch 5T;       then echo armv5t
3530         elif check_arm_arch 5TE;      then echo armv5te
3531         elif check_arm_arch 5TEJ;     then echo armv5te
3532         elif check_arm_arch 6;        then echo armv6
3533         elif check_arm_arch 6J;       then echo armv6j
3534         elif check_arm_arch 6K;       then echo armv6k
3535         elif check_arm_arch 6Z;       then echo armv6z
3536         elif check_arm_arch 6ZK;      then echo armv6zk
3537         elif check_arm_arch 6T2;      then echo armv6t2
3538         elif check_arm_arch 7;        then echo armv7
3539         elif check_arm_arch 7A  7_A;  then echo armv7-a
3540         elif check_arm_arch 7S;       then echo armv7-a
3541         elif check_arm_arch 7R  7_R;  then echo armv7-r
3542         elif check_arm_arch 7M  7_M;  then echo armv7-m
3543         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3544         elif check_arm_arch 8A  8_A;  then echo armv8-a
3545         fi
3546     }
3547
3548     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3549
3550     case $cpu in
3551         armv*)
3552             cpuflags="-march=$cpu"
3553             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3554         ;;
3555         *)
3556             cpuflags="-mcpu=$cpu"
3557             case $cpu in
3558                 cortex-a*)                               subarch=armv7a  ;;
3559                 cortex-r*)                               subarch=armv7r  ;;
3560                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3561                 arm11*)                                  subarch=armv6   ;;
3562                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3563                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3564                 *)                             subarch=$(probe_arm_arch) ;;
3565             esac
3566         ;;
3567     esac
3568
3569     case "$subarch" in
3570         armv5t*)    enable fast_clz                ;;
3571         armv[6-8]*) enable fast_clz fast_unaligned ;;
3572     esac
3573
3574 elif enabled avr32; then
3575
3576     case $cpu in
3577         ap7[02]0[0-2])
3578             subarch="avr32_ap"
3579             cpuflags="-mpart=$cpu"
3580         ;;
3581         ap)
3582             subarch="avr32_ap"
3583             cpuflags="-march=$cpu"
3584         ;;
3585         uc3[ab]*)
3586             subarch="avr32_uc"
3587             cpuflags="-mcpu=$cpu"
3588         ;;
3589         uc)
3590             subarch="avr32_uc"
3591             cpuflags="-march=$cpu"
3592         ;;
3593     esac
3594
3595 elif enabled bfin; then
3596
3597     cpuflags="-mcpu=$cpu"
3598
3599 elif enabled mips; then
3600
3601     cpuflags="-march=$cpu"
3602
3603 elif enabled ppc; then
3604
3605     disable ldbrx
3606
3607     case $(tolower $cpu) in
3608         601|ppc601|powerpc601)
3609             cpuflags="-mcpu=601"
3610             disable altivec
3611         ;;
3612         603*|ppc603*|powerpc603*)
3613             cpuflags="-mcpu=603"
3614             disable altivec
3615         ;;
3616         604*|ppc604*|powerpc604*)
3617             cpuflags="-mcpu=604"
3618             disable altivec
3619         ;;
3620         g3|75*|ppc75*|powerpc75*)
3621             cpuflags="-mcpu=750"
3622             disable altivec
3623         ;;
3624         g4|745*|ppc745*|powerpc745*)
3625             cpuflags="-mcpu=7450"
3626             disable vsx
3627         ;;
3628         74*|ppc74*|powerpc74*)
3629             cpuflags="-mcpu=7400"
3630             disable vsx
3631         ;;
3632         g5|970|ppc970|powerpc970)
3633             cpuflags="-mcpu=970"
3634             disable vsx
3635         ;;
3636         power[3-6]*)
3637             cpuflags="-mcpu=$cpu"
3638             disable vsx
3639         ;;
3640         power[7-8]*)
3641             cpuflags="-mcpu=$cpu"
3642             enable ldbrx
3643         ;;
3644         cell)
3645             cpuflags="-mcpu=cell"
3646             enable ldbrx
3647             disable vsx
3648         ;;
3649         e500mc)
3650             cpuflags="-mcpu=e500mc"
3651             disable altivec
3652         ;;
3653         e500v2)
3654             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3655             disable altivec
3656             disable dcbzl
3657         ;;
3658         e500)
3659             cpuflags="-mcpu=8540 -mhard-float"
3660             disable altivec
3661             disable dcbzl
3662         ;;
3663     esac
3664
3665 elif enabled sparc; then
3666
3667     case $cpu in
3668         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3669             cpuflags="-mcpu=$cpu"
3670         ;;
3671         ultrasparc*|niagara[234])
3672             cpuflags="-mcpu=$cpu"
3673         ;;
3674     esac
3675
3676 elif enabled x86; then
3677
3678     case $cpu in
3679         i[345]86|pentium)
3680             cpuflags="-march=$cpu"
3681             disable i686
3682             disable mmx
3683         ;;
3684         # targets that do NOT support nopl and conditional mov (cmov)
3685         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3686             cpuflags="-march=$cpu"
3687             disable i686
3688         ;;
3689         # targets that do support nopl and conditional mov (cmov)
3690         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3691             cpuflags="-march=$cpu"
3692             enable i686
3693             enable fast_cmov
3694         ;;
3695         # targets that do support conditional mov but on which it's slow
3696         pentium4|pentium4m|prescott|nocona)
3697             cpuflags="-march=$cpu"
3698             enable i686
3699             disable fast_cmov
3700         ;;
3701     esac
3702
3703 fi
3704
3705 if [ "$cpu" != generic ]; then
3706     add_cflags  $cpuflags
3707     add_asflags $cpuflags
3708     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3709 fi
3710
3711 # compiler sanity check
3712 check_exec <<EOF
3713 int main(void){ return 0; }
3714 EOF
3715 if test "$?" != 0; then
3716     echo "$cc is unable to create an executable file."
3717     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3718         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3719         echo "Only do this if you know what cross compiling means."
3720     fi
3721     die "C compiler test failed."
3722 fi
3723
3724 add_cppflags -D_ISOC99_SOURCE
3725
3726 # some compilers silently accept -std=c11, so we also need to check that the
3727 # version macro is defined properly
3728 if test_cflags_cpp -std=c11 "__STDC_VERSION__ >= 201112L"; then
3729     add_cflags -std=c11
3730 else
3731     check_cflags -std=c99
3732 fi
3733
3734 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3735 #include <stdlib.h>
3736 EOF
3737 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3738 #include <stdlib.h>
3739 EOF
3740
3741 add_host_cppflags -D_ISOC99_SOURCE
3742 check_host_cflags -std=c99
3743 check_host_cflags -Wall
3744 check_host_cflags -O3
3745
3746 check_64bit(){
3747     arch32=$1
3748     arch64=$2
3749     expr=$3
3750     check_code cc "" "int test[2*($expr) - 1]" &&
3751         subarch=$arch64 || subarch=$arch32
3752 }
3753
3754 case "$arch" in
3755     aarch64|alpha|ia64)
3756         spic=$shared
3757     ;;
3758     mips)
3759         check_64bit mips mips64 '_MIPS_SIM > 1'
3760         spic=$shared
3761     ;;
3762     parisc)
3763         check_64bit parisc parisc64 'sizeof(void *) > 4'
3764         spic=$shared
3765     ;;
3766     ppc)
3767         check_64bit ppc ppc64 'sizeof(void *) > 4'
3768         spic=$shared
3769     ;;
3770     s390)
3771         check_64bit s390 s390x 'sizeof(void *) > 4'
3772         spic=$shared
3773     ;;
3774     sparc)
3775         check_64bit sparc sparc64 'sizeof(void *) > 4'
3776         spic=$shared
3777     ;;
3778     x86)
3779         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3780         if test "$subarch" = "x86_64"; then
3781             spic=$shared
3782         fi
3783     ;;
3784 esac
3785
3786 enable $subarch
3787 enabled spic && enable_weak pic
3788
3789 # OS specific
3790 case $target_os in
3791     aix)
3792         SHFLAGS=-shared
3793         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3794         enabled shared && add_ldflags -Wl,-brtl
3795         ;;
3796     android)
3797         disable symver
3798         enable section_data_rel_ro
3799         SLIB_INSTALL_NAME='$(SLIBNAME)'
3800         SLIB_INSTALL_LINKS=
3801         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3802         ;;
3803     haiku)
3804         prefix_default="/boot/common"
3805         network_extralibs="-lnetwork"
3806         host_libs=
3807         ;;
3808     sunos)
3809         SHFLAGS='-shared -Wl,-h,$$(@F)'
3810         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3811         network_extralibs="-lsocket -lnsl"
3812         # When using suncc to build, the Solaris linker will mark
3813         # an executable with each instruction set encountered by
3814         # the Solaris assembler.  As our libraries contain their own
3815         # guards for processor-specific code, instead suppress
3816         # generation of the HWCAPS ELF section on Solaris x86 only.
3817         enabled_all suncc x86 &&
3818             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3819             add_ldflags -Wl,-M,mapfile
3820         nm_default='nm -P -g'
3821         version_script='-M'
3822         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3823         ;;
3824     netbsd)
3825         disable symver
3826         oss_indev_extralibs="-lossaudio"
3827         oss_outdev_extralibs="-lossaudio"
3828         ;;
3829     openbsd|bitrig)
3830         disable symver
3831         SHFLAGS='-shared'
3832         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3833         SLIB_INSTALL_LINKS=
3834         oss_indev_extralibs="-lossaudio"
3835         oss_outdev_extralibs="-lossaudio"
3836         ;;
3837     dragonfly)
3838         disable symver
3839         ;;
3840     freebsd)
3841         ;;
3842     bsd/os)
3843         add_extralibs -lpoll -lgnugetopt
3844         ;;
3845     darwin)
3846         enabled ppc && add_asflags -force_cpusubtype_ALL
3847         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3848         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3849         add_ldflags -Wl,-dynamic,-search_paths_first
3850         SLIBSUF=".dylib"
3851         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3852         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3853         objformat="macho"
3854         enabled x86_64 && objformat="macho64"
3855         enabled_any pic shared ||
3856             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3857         check_header dispatch/dispatch.h &&
3858             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3859         ;;
3860     msys*)
3861         die "Native MSYS builds are discouraged, please use the MINGW environment."
3862         ;;
3863     mingw32*|mingw64*)
3864         if test $target_os = "mingw32ce"; then
3865             disable network
3866         else
3867             target_os=mingw32
3868         fi
3869         LIBTARGET=i386
3870         if enabled x86_64; then
3871             LIBTARGET="i386:x86-64"
3872         elif enabled arm; then
3873             LIBTARGET=arm-wince
3874         fi
3875         check_ldflags -Wl,--nxcompat
3876         check_ldflags -Wl,--dynamicbase
3877         shlibdir_default="$bindir_default"
3878         SLIBPREF=""
3879         SLIBSUF=".dll"
3880         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3881         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3882         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3883         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3884         SLIB_INSTALL_LINKS=
3885         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3886         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3887         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3888         objformat="win32"
3889         dlltool="${cross_prefix}dlltool"
3890         ranlib=:
3891         enable dos_paths
3892         ;;
3893     win32|win64)
3894         disable symver
3895         if enabled shared; then
3896             # Link to the import library instead of the normal static library
3897             # for shared libs.
3898             LD_LIB='%.lib'
3899             # Cannot build both shared and static libs with MSVC or icl.
3900             disable static
3901         fi
3902         shlibdir_default="$bindir_default"
3903         SLIBPREF=""
3904         SLIBSUF=".dll"
3905         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3906         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3907         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3908         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3909         SLIB_INSTALL_LINKS=
3910         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3911         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3912         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3913         objformat="win32"
3914         ranlib=:
3915         enable dos_paths
3916         ;;
3917     cygwin*)
3918         target_os=cygwin
3919         shlibdir_default="$bindir_default"
3920         SLIBPREF="cyg"
3921         SLIBSUF=".dll"
3922         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3923         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3924         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3925         SLIB_INSTALL_LINKS=
3926         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3927         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3928         objformat="win32"
3929         enable dos_paths
3930         ;;
3931     *-dos|freedos|opendos)
3932         network_extralibs="-lsocket"
3933         objformat="coff"
3934         enable dos_paths
3935         add_cppflags -U__STRICT_ANSI__
3936         ;;
3937     linux)
3938         enable dv1394
3939         enable section_data_rel_ro
3940         ;;
3941     irix*)
3942         target_os=irix
3943         ranlib="echo ignoring ranlib"
3944         ;;
3945     os/2*)
3946         ln_s="cp -f"
3947         objformat="aout"
3948         add_cppflags -D_GNU_SOURCE
3949         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3950         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3951         LIBSUF="_s.a"
3952         SLIBPREF=""
3953         SLIBSUF=".dll"
3954         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3955         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3956         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3957             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3958             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3959             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3960             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
3961         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3962             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3963         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3964         enable dos_paths
3965         ;;
3966     gnu/kfreebsd)
3967         add_cppflags -D_BSD_SOURCE
3968         ;;
3969     gnu)
3970         ;;
3971     qnx)
3972         add_cppflags -D_QNX_SOURCE
3973         network_extralibs="-lsocket"
3974         ;;
3975     symbian)
3976         SLIBSUF=".dll"
3977         enable dos_paths
3978         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3979         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3980         add_ldflags -Wl,--target1-abs,--no-undefined \
3981                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3982                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3983         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3984                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3985                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3986         ;;
3987     osf1)
3988         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3989         ;;
3990     minix)
3991         ;;
3992     plan9)
3993         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3994                      -D_REENTRANT_SOURCE        \
3995                      -D_RESEARCH_SOURCE         \
3996                      -DFD_SETSIZE=96            \
3997                      -DHAVE_SOCK_OPTS
3998         add_compat strtod.o strtod=avpriv_strtod
3999         network_extralibs='-lbsd'
4000         exeobjs=compat/plan9/main.o
4001         cp_f='cp'
4002         ;;
4003     none)
4004         ;;
4005     *)
4006         die "Unknown OS '$target_os'."
4007         ;;
4008 esac
4009
4010 # determine libc flavour
4011
4012 probe_libc(){
4013     pfx=$1
4014     pfx_no_=${pfx%_}
4015     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4016     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4017         eval ${pfx}libc_type=uclibc
4018         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4019     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4020         eval ${pfx}libc_type=glibc
4021         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4022     # MinGW headers can be installed on Cygwin, so check for newlib first.
4023     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4024         eval ${pfx}libc_type=newlib
4025         add_${pfx}cppflags -U__STRICT_ANSI__
4026     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4027     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4028         eval ${pfx}libc_type=mingw64
4029         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4030         eval test \$${pfx_no_}cc_type = "gcc" &&
4031             add_${pfx}cppflags -D__printf__=__gnu_printf__
4032     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4033          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4034         eval ${pfx}libc_type=mingw32
4035         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4036             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4037             die "ERROR: MinGW32 runtime version must be >= 3.15."
4038         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4039         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700__" &&
4040             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
4041         eval test \$${pfx_no_}cc_type = "gcc" &&
4042             add_${pfx}cppflags -D__printf__=__gnu_printf__
4043     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4044         eval ${pfx}libc_type=msvcrt
4045         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4046             if [ "$pfx" = host_ ]; then
4047                 add_host_cppflags -Dsnprintf=_snprintf
4048             else
4049                 add_compat strtod.o strtod=avpriv_strtod
4050                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4051                                              _snprintf=avpriv_snprintf  \
4052                                              vsnprintf=avpriv_vsnprintf
4053             fi
4054         fi
4055         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
4056         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4057         # 0x601 by default unless something else is set by the user.
4058         # This can easily lead to us detecting functions only present
4059         # in such new versions and producing binaries requiring windows 7.0.
4060         # Therefore explicitly set the default to XP unless the user has
4061         # set something else on the command line.
4062         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4063         # family. For these cases, configure is free to use any functions
4064         # found in the SDK headers by default. (Alternatively, we could force
4065         # _WIN32_WINNT to 0x0602 in that case.)
4066         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4067             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4068 #ifdef WINAPI_FAMILY
4069 #include <winapifamily.h>
4070 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4071 #error not desktop
4072 #endif
4073 #endif
4074 EOF
4075         if [ "$pfx" = "" ]; then
4076             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4077         fi
4078     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4079         eval ${pfx}libc_type=klibc
4080     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4081         eval ${pfx}libc_type=bionic
4082     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4083         eval ${pfx}libc_type=solaris
4084         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4085     else
4086         eval ${pfx}libc_type=default
4087         add_${pfx}cppflags -D_DEFAULT_SOURCE
4088     fi
4089 }
4090
4091 probe_libc
4092 test -n "$libc_type" && enable libc_$libc_type
4093 probe_libc host_
4094 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4095
4096 case $libc_type in
4097     bionic)
4098         add_compat strtod.o strtod=avpriv_strtod
4099         ;;
4100 esac
4101
4102 # hacks for compiler/libc/os combinations
4103
4104 if enabled_all tms470 libc_glibc; then
4105     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4106     add_cppflags -D__USER_LABEL_PREFIX__=
4107     add_cppflags -D__builtin_memset=memset
4108     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4109     add_cflags   -pds=48    # incompatible redefinition of macro
4110 fi
4111
4112 if enabled_all ccc libc_glibc; then
4113     add_ldflags -Wl,-z,now  # calls to libots crash without this
4114 fi
4115
4116 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4117     add_cppflags '-I\$(SRC_PATH)/compat/float'
4118
4119 esc(){
4120     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4121 }
4122
4123 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
4124
4125 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4126
4127 set_default $PATHS_LIST
4128 set_default nm
4129
4130 # we need to build at least one lib type
4131 if ! enabled_any static shared; then
4132     cat <<EOF
4133 At least one library type must be built.
4134 Specify --enable-static to build the static libraries or --enable-shared to
4135 build the shared libraries as well. To only build the shared libraries specify
4136 --disable-static in addition to --enable-shared.
4137 EOF
4138     exit 1
4139 fi
4140
4141 disabled optimizations || check_cflags -fomit-frame-pointer
4142
4143 enable_weak_pic() {
4144     disabled pic && return
4145     enable pic
4146     add_cppflags -DPIC
4147     case "$target_os" in
4148     mingw*|cygwin*)
4149         ;;
4150     *)
4151         add_cflags -fPIC
4152         ;;
4153     esac
4154     add_asflags  -fPIC
4155 }
4156
4157 enabled pic && enable_weak_pic
4158
4159 check_cc <<EOF || die "Symbol mangling check failed."
4160 int ff_extern;
4161 EOF
4162 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4163 extern_prefix=${sym%%ff_extern*}
4164
4165 check_cc <<EOF && enable_weak inline_asm
4166 void foo(void) { __asm__ volatile ("" ::); }
4167 EOF
4168
4169 _restrict=
4170 for restrict_keyword in restrict __restrict__ __restrict; do
4171     check_cc <<EOF && _restrict=$restrict_keyword && break
4172 void foo(char * $restrict_keyword p);
4173 EOF
4174 done
4175
4176 check_cc <<EOF && enable pragma_deprecated
4177 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4178 EOF
4179
4180 check_cc <<EOF && enable attribute_packed
4181 struct { int x; } __attribute__((packed)) x;
4182 EOF
4183
4184 check_cc <<EOF && enable attribute_may_alias
4185 union { int x; } __attribute__((may_alias)) x;
4186 EOF
4187
4188 check_cc <<EOF || die "endian test failed"
4189 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4190 EOF
4191 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4192
4193 check_gas() {
4194     log "check_gas using '$as' as AS"
4195     # :vararg is used on aarch64, arm and ppc altivec
4196     check_as <<EOF || return 1
4197 .macro m n, y:vararg=0
4198 \n: .int \y
4199 .endm
4200 m x
4201 EOF
4202     # .altmacro is only used in arm asm
4203     ! enabled arm || check_as <<EOF || return 1
4204 .altmacro
4205 EOF
4206     enable gnu_as
4207     return 0
4208 }
4209
4210 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4211     nogas=:
4212     enabled_any arm aarch64 && nogas=die
4213     enabled_all ppc altivec && nogas=warn
4214     as_noop=-v
4215
4216     case $as_type in
4217         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4218         gcc)  gaspp_as_type=gas ;;
4219         *)    gaspp_as_type=$as_type ;;
4220     esac
4221
4222     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4223
4224     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4225         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4226
4227     if ! check_gas ; then
4228         as=${gas:=$as}
4229         check_gas || \
4230             $nogas "GNU assembler not found, install/update gas-preprocessor"
4231     fi
4232
4233     check_as <<EOF && enable as_func
4234 .func test
4235 .endfunc
4236 EOF
4237 fi
4238
4239 check_inline_asm inline_asm_labels '"1:\n"'
4240
4241 if enabled aarch64; then
4242     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4243     # internal assembler in clang 3.3 does not support this instruction
4244     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4245     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4246
4247     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4248
4249 elif enabled alpha; then
4250
4251     check_cflags -mieee
4252
4253 elif enabled arm; then
4254
4255     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4256     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4257     enabled thumb && check_cflags -mthumb || check_cflags -marm
4258
4259     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4260         enable vfp_args
4261     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4262         enable vfp_args
4263     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4264         case "${cross_prefix:-$cc}" in
4265             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4266             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4267 __asm__ (".eabi_attribute 28, 1");
4268 int main(void) { return 0; }
4269 EOF
4270         esac
4271         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4272     fi
4273
4274     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4275     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4276     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4277     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4278     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4279     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4280
4281     [ $target_os = linux ] || [ $target_os = android ] ||
4282         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4283             $ARCH_EXT_LIST_ARM
4284
4285     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4286
4287     check_as <<EOF && enable as_dn_directive
4288 ra .dn d0.i16
4289 .unreq ra
4290 EOF
4291     check_as <<EOF && enable as_fpu_directive
4292 .fpu neon
4293 EOF
4294
4295     # llvm's integrated assembler supports .object_arch from llvm 3.5
4296     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4297 .object_arch armv4
4298 EOF
4299
4300     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4301
4302 elif enabled mips; then
4303
4304     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4305
4306     # make sure that only an instruction set is enabled
4307     disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4308
4309     if enabled mips64; then
4310         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4311             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4312                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4313     else
4314         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4315             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4316                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4317     fi
4318
4319 elif enabled parisc; then
4320
4321     if enabled gcc; then
4322         case $($cc -dumpversion) in
4323             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4324         esac
4325     fi
4326
4327 elif enabled ppc; then
4328
4329     enable local_aligned_8 local_aligned_16 local_aligned_32
4330
4331     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4332     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4333     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4334     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4335
4336     # AltiVec flags: The FSF version of GCC differs from the Apple version
4337     if enabled altivec; then
4338         check_cflags -maltivec -mabi=altivec &&
4339         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4340         check_cflags -faltivec
4341
4342         # check if our compiler supports Motorola AltiVec C API
4343         check_cc <<EOF || disable altivec
4344 $inc_altivec_h
4345 int main(void) {
4346     vector signed int v1 = (vector signed int) { 0 };
4347     vector signed int v2 = (vector signed int) { 1 };
4348     v1 = vec_add(v1, v2);
4349     return 0;
4350 }
4351 EOF
4352
4353         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4354     fi
4355
4356     if enabled vsx; then
4357         check_cflags -mvsx &&
4358         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4359     fi
4360
4361     if enabled power8; then
4362         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4363     fi
4364
4365 elif enabled x86; then
4366
4367     check_builtin rdtsc    intrin.h   "__rdtsc()"
4368     check_builtin mm_empty mmintrin.h "_mm_empty()"
4369
4370     enable local_aligned_8 local_aligned_16 local_aligned_32
4371
4372     # check whether EBP is available on x86
4373     # As 'i' is stored on the stack, this program will crash
4374     # if the base pointer is used to access it because the
4375     # base pointer is cleared in the inline assembly code.
4376     check_exec_crash <<EOF && enable ebp_available
4377 volatile int i=0;
4378 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4379 return i;
4380 EOF
4381
4382     # check whether EBX is available on x86
4383     check_inline_asm ebx_available '""::"b"(0)' &&
4384         check_inline_asm ebx_available '"":::"%ebx"'
4385
4386     # check whether xmm clobbers are supported
4387     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4388
4389     # check whether binutils is new enough to compile SSSE3/MMXEXT
4390     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4391     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4392
4393     if ! disabled_any asm mmx yasm; then
4394         if check_cmd $yasmexe --version; then
4395             enabled x86_64 && yasm_extra="-m amd64"
4396             yasm_debug="-g dwarf2"
4397         elif check_cmd nasm -v; then
4398             yasmexe=nasm
4399             yasm_debug="-g -F dwarf"
4400             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4401         fi
4402
4403         YASMFLAGS="-f $objformat $yasm_extra"
4404         enabled pic               && append YASMFLAGS "-DPIC"
4405         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4406         case "$objformat" in
4407             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4408         esac
4409
4410         check_yasm "movbe ecx, [5]" && enable yasm ||
4411             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4412         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4413         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4414         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4415         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4416         check_yasm "CPU amdnop" || disable cpunop
4417     fi
4418
4419     case "$cpu" in
4420         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4421             disable fast_clz
4422         ;;
4423     esac
4424
4425 fi
4426
4427 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4428
4429 check_ldflags -Wl,--as-needed
4430
4431 if check_func dlopen; then
4432     ldl=
4433 elif check_func dlopen -ldl; then
4434     ldl=-ldl
4435 fi
4436
4437 if ! disabled network; then
4438     check_func getaddrinfo $network_extralibs
4439     check_func inet_aton $network_extralibs
4440
4441     check_type netdb.h "struct addrinfo"
4442     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4443     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4444     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4445     check_type poll.h "struct pollfd"
4446     check_type netinet/sctp.h "struct sctp_event_subscribe"
4447     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4448     check_type netinet/in.h "struct sockaddr_in6"
4449     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4450     check_type "sys/types.h sys/socket.h" socklen_t
4451
4452     # Prefer arpa/inet.h over winsock2
4453     if check_header arpa/inet.h ; then
4454         check_func closesocket
4455     elif check_header winsock2.h ; then
4456         check_func_headers winsock2.h closesocket -lws2 &&
4457             network_extralibs="-lws2" ||
4458         { check_func_headers winsock2.h closesocket -lws2_32 &&
4459             network_extralibs="-lws2_32"; } || disable winsock2_h network
4460         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4461
4462         check_type ws2tcpip.h socklen_t
4463         check_type ws2tcpip.h "struct addrinfo"
4464         check_type ws2tcpip.h "struct group_source_req"
4465         check_type ws2tcpip.h "struct ip_mreq_source"
4466         check_type ws2tcpip.h "struct ipv6_mreq"
4467         check_type winsock2.h "struct pollfd"
4468         check_struct winsock2.h "struct sockaddr" sa_len
4469         check_type ws2tcpip.h "struct sockaddr_in6"
4470         check_type ws2tcpip.h "struct sockaddr_storage"
4471     else
4472         disable network
4473     fi
4474 fi
4475
4476 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4477 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4478 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4479 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4480
4481 case "$custom_allocator" in
4482     jemalloc)
4483         # jemalloc by default does not use a prefix
4484         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4485     ;;
4486     tcmalloc)
4487         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
4488         malloc_prefix=tc_
4489     ;;
4490 esac
4491
4492 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4493 check_func  ${malloc_prefix}memalign            && enable memalign
4494 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4495
4496 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4497     check_func_headers time.h clock_gettime ||
4498         { check_lib time.h clock_gettime -lrt && LIBRT="-lrt"; }
4499
4500 check_func  fcntl
4501 check_func  fork
4502 check_func  gethrtime
4503 check_func  getopt
4504 check_func  getrusage
4505 check_func  gettimeofday
4506 check_func  gmtime_r
4507 check_func  isatty
4508 check_func  localtime_r
4509 check_func  mach_absolute_time
4510 check_func  mkstemp
4511 check_func  mmap
4512 check_func  mprotect
4513 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4514 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt; }
4515 check_func  sched_getaffinity
4516 check_func  setrlimit
4517 check_func  strerror_r
4518 check_func  sysconf
4519 check_func  sysctl
4520 check_func  usleep
4521
4522 check_func_headers io.h setmode
4523 check_func_headers stdlib.h getenv
4524
4525 check_func_headers windows.h CoTaskMemFree -lole32
4526 check_func_headers windows.h GetProcessAffinityMask
4527 check_func_headers windows.h GetProcessTimes
4528 check_func_headers windows.h GetSystemTimeAsFileTime
4529 check_func_headers windows.h LoadLibrary
4530 check_func_headers windows.h MapViewOfFile
4531 check_func_headers windows.h SetConsoleTextAttribute
4532 check_func_headers windows.h Sleep
4533 check_func_headers windows.h VirtualAlloc
4534 check_struct windows.h "CONDITION_VARIABLE" Ptr
4535
4536 check_header direct.h
4537 check_header dlfcn.h
4538 check_header d3d11.h
4539 check_header dxva.h
4540 check_header dxva2api.h
4541 check_header io.h
4542 check_header mach/mach_time.h
4543 check_header malloc.h
4544 check_header poll.h
4545 check_header sys/mman.h
4546 check_header sys/param.h
4547 check_header sys/resource.h
4548 check_header sys/select.h
4549 check_header sys/time.h
4550 check_header sys/un.h
4551 check_header unistd.h
4552 check_header valgrind/valgrind.h
4553 check_header vdpau/vdpau.h
4554 check_header vdpau/vdpau_x11.h
4555 check_header VideoDecodeAcceleration/VDADecoder.h
4556 check_header windows.h
4557 check_header X11/extensions/XvMClib.h
4558
4559 # it seems there are versions of clang in some distros that try to use the
4560 # gcc headers, which explodes for stdatomic
4561 # so we also check that atomics actually work here
4562 check_builtin stdatomic_h stdatomic.h "atomic_int foo; atomic_store(&foo, 0)"
4563
4564 check_lib "windows.h shellapi.h" CommandLineToArgvW   -lshell32
4565 check_lib "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
4566 check_lib "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
4567
4568 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4569
4570 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4571 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4572 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4573
4574 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
4575 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
4576 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
4577 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
4578 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
4579
4580 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
4581
4582 if ! disabled w32threads && ! enabled pthreads; then
4583     check_func_headers "windows.h process.h" _beginthreadex &&
4584         enable w32threads || disable w32threads
4585 fi
4586
4587 # check for some common methods of building with pthread support
4588 # do this before the optional library checks as some of them require pthreads
4589 if ! disabled pthreads && ! enabled w32threads; then
4590     enable pthreads
4591     if check_func pthread_join -pthread; then
4592         add_cflags -pthread
4593         add_extralibs -pthread
4594     elif check_func pthread_join -pthreads; then
4595         add_cflags -pthreads
4596         add_extralibs -pthreads
4597     elif check_func pthread_join -lpthreadGC2; then
4598         add_extralibs -lpthreadGC2
4599     elif check_lib pthread.h pthread_join -lpthread; then
4600         :
4601     elif ! check_func pthread_join; then
4602         disable pthreads
4603     fi
4604 fi
4605
4606 enabled pthreads &&
4607     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
4608
4609 disabled  zlib || check_lib  zlib.h      zlibVersion -lz   || disable  zlib
4610 disabled bzlib || check_lib bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4611
4612 check_lib math.h sin -lm && LIBM="-lm"
4613
4614 atan2f_args=2
4615 ldexpf_args=2
4616 powf_args=2
4617
4618 for func in $MATH_FUNCS; do
4619     eval check_mathfunc $func \${${func}_args:-1}
4620 done
4621
4622 # these are off by default, so fail if requested and not available
4623 enabled avisynth          && { check_lib "avisynth/avisynth_c.h windows.h" LoadLibrary ||
4624                                check_lib "avxsynth/avxsynth_c.h dlfcn.h" dlopen -ldl   ||
4625                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4626 enabled cuda              && check_lib cuda.h cuInit -lcuda
4627 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4628 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4629 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4630 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4631 enabled libfaac           && require libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4632 enabled libfdk_aac        && require_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4633 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4634 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4635 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4636                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4637                                done || die "ERROR: libgsm not found"; }
4638 enabled libhdcd           && require_pkg_config libhdcd "hdcd/hdcd_simple.h" hdcd_new
4639 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4640 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
4641 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
4642 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4643 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
4644 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4645 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4646 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4647 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
4648 enabled libopenjpeg       && { check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4649                                require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; }
4650 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4651 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4652 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4653 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4654 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
4655 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
4656 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4657 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4658 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4659 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4660 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4661 enabled libvpx            && require_pkg_config "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version && {
4662     enabled libvpx_vp8_decoder && {
4663         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
4664             disable libvpx_vp8_decoder;
4665     }
4666     enabled libvpx_vp8_encoder && {
4667         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
4668             disable libvpx_vp8_encoder;
4669     }
4670     enabled libvpx_vp9_decoder && {
4671         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
4672             disable libvpx_vp9_decoder;
4673     }
4674     enabled libvpx_vp9_encoder && {
4675         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
4676             disable libvpx_vp9_encoder;
4677     }
4678     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
4679         die "libvpx enabled but no supported decoders found"
4680     fi
4681 }
4682 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4683 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4684 enabled libx264           && require_pkg_config x264 "stdint.h x264.h" x264_encoder_encode &&
4685                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4686                                die "ERROR: libx264 version must be >= 0.118."; } &&
4687                              { check_cpp_condition x264.h "X264_MPEG2" &&
4688                                enable libx262; }
4689 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
4690                              { check_cpp_condition x265.h "X265_BUILD >= 57" ||
4691                                die "ERROR: libx265 version must be >= 57."; }
4692 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
4693 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4694 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4695                                 { ! enabled cross_compile && {
4696                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
4697                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
4698                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
4699                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
4700                                die "ERROR: mmal not found"; }
4701 enabled mmal && check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"
4702 enabled omx_rpi && enable omx
4703 enabled omx               && { check_header OMX_Core.h ||
4704                                 { ! enabled cross_compile && enabled omx_rpi && {
4705                                     add_cflags -isystem/opt/vc/include/IL ; }
4706                                 check_header OMX_Core.h ; } ||
4707                                die "ERROR: OpenMAX IL headers not found"; }
4708 enabled openssl           && { { check_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
4709                                  check_pkg_config openssl openssl/ssl.h SSL_library_init; } && {
4710                                add_cflags $openssl_cflags && add_extralibs $openssl_libs; }||
4711                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4712                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4713                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4714                                die "ERROR: openssl not found"; }
4715
4716 if enabled gnutls; then
4717     { check_lib gmp.h mpz_export -lgmp && enable gmp; } ||
4718     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4719 fi
4720
4721 # libdc1394 check
4722 if enabled libdc1394; then
4723     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
4724         enable libdc1394_2; } ||
4725     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4726         enable libdc1394_1; } ||
4727     die "ERROR: No version of libdc1394 found "
4728 fi
4729
4730 if enabled nvenc; then
4731     check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."
4732     check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6" ||
4733         die "ERROR: NVENC API version 5 or older is not supported"
4734 fi
4735
4736 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4737     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4738     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4739     enable sdl
4740 fi
4741
4742 ! disabled pod2man   && check_cmd pod2man --help     && enable pod2man   || disable pod2man
4743 ! disabled texi2html && check_cmd texi2html -version && enable texi2html || disable texi2html
4744
4745 check_header linux/fb.h
4746 check_header linux/videodev2.h
4747 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4748
4749 check_header AVFoundation/AVFoundation.h &&
4750     check_objcflags -fobjc-arc &&
4751     add_extralibs -framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia ||
4752     disable AVFoundation_AVFoundation_h
4753
4754 check_header sys/videoio.h
4755
4756 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4757 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4758 # w32api 3.12 had it defined wrong
4759 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4760
4761 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4762 { check_header dev/bktr/ioctl_meteor.h &&
4763   check_header dev/bktr/ioctl_bt848.h; } ||
4764 { check_header machine/ioctl_meteor.h &&
4765   check_header machine/ioctl_bt848.h; } ||
4766 { check_header dev/video/meteor/ioctl_meteor.h &&
4767   check_header dev/video/bktr/ioctl_bt848.h; } ||
4768 check_header dev/ic/bt8xx.h
4769
4770 check_header sndio.h
4771 check_header sys/soundcard.h
4772 check_header soundcard.h
4773
4774 enabled_any alsa_indev alsa_outdev &&
4775     check_lib alsa/asoundlib.h snd_pcm_htimestamp -lasound
4776
4777 enabled jack_indev && check_lib jack/jack.h jack_client_open -ljack &&
4778     check_func jack_port_get_latency_range -ljack
4779
4780 enabled_any sndio_indev sndio_outdev && check_lib sndio.h sio_open -lsndio
4781
4782 if enabled libcdio; then
4783     check_lib "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4784     check_lib "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4785     die "ERROR: No usable libcdio/cdparanoia found"
4786 fi
4787
4788 if enabled libxcb; then
4789     check_pkg_config xcb-shape xcb/shape.h xcb_shape_rectangles || {
4790         enabled libxcb && die "ERROR: libxcb not found";
4791     } && enable libxcb
4792
4793     disabled libxcb_shm ||
4794         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
4795             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
4796         } && check_header sys/shm.h && enable libxcb_shm
4797
4798     disabled libxcb_xfixes ||
4799         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
4800             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
4801         } && enable libxcb_xfixes
4802
4803     add_cflags "$xcb_shape_cflags $xcb_event_cflags $xcb_shm_cflags $xcb_xfixes_cflags"
4804     add_extralibs "$xcb_shape_libs $xcb_event_libs $xcb_shm_libs $xcb_xfixes_libs"
4805 fi
4806
4807 enabled vaapi && require vaapi va/va.h vaInitialize -lva