libxvid: Require availability of mkstemp()
[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_vaapi_hwaccel_deps="vaapi"
2188 vc1_vaapi_hwaccel_select="vc1_decoder"
2189 vc1_vdpau_hwaccel_deps="vdpau"
2190 vc1_vdpau_hwaccel_select="vc1_decoder"
2191 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2192 vp8_vaapi_hwaccel_select="vp8_decoder"
2193 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2194 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2195 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2196 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2197
2198 # hardware-accelerated codecs
2199 nvenc_deps_any="dlopen LoadLibrary"
2200 nvenc_extralibs='$ldl'
2201 omx_deps="dlopen pthreads"
2202 omx_extralibs='$ldl'
2203 qsvdec_select="qsv"
2204 qsvenc_select="qsv"
2205 vaapi_encode_deps="vaapi"
2206
2207 hwupload_cuda_filter_deps="cuda"
2208 scale_npp_filter_deps="cuda libnpp"
2209
2210 h264_nvenc_encoder_deps="nvenc"
2211 h264_qsv_decoder_deps="libmfx"
2212 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2213 h264_qsv_encoder_deps="libmfx"
2214 h264_qsv_encoder_select="qsvenc"
2215 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2216 h264_vaapi_encoder_select="vaapi_encode golomb"
2217
2218 hevc_nvenc_encoder_deps="nvenc"
2219 hevc_qsv_decoder_deps="libmfx"
2220 hevc_qsv_encoder_deps="libmfx"
2221 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2222 hevc_qsv_encoder_select="qsvenc"
2223 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2224 hevc_vaapi_encoder_select="vaapi_encode golomb"
2225 mpeg2_qsv_decoder_deps="libmfx"
2226 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2227 mpeg2_qsv_encoder_deps="libmfx"
2228 mpeg2_qsv_encoder_select="qsvenc"
2229
2230 nvenc_h264_encoder_deps="nvenc"
2231 nvenc_hevc_encoder_deps="nvenc"
2232
2233 # parsers
2234 h264_parser_select="golomb h264dsp h264parse"
2235 hevc_parser_select="golomb"
2236 mpegvideo_parser_select="mpegvideo"
2237 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2238 vc1_parser_select="vc1dsp"
2239
2240 # bitstream_filters
2241 mjpeg2jpeg_bsf_select="jpegtables"
2242
2243 # external libraries
2244 libdcadec_decoder_deps="libdcadec"
2245 libfaac_encoder_deps="libfaac"
2246 libfaac_encoder_select="audio_frame_queue"
2247 libfdk_aac_decoder_deps="libfdk_aac"
2248 libfdk_aac_encoder_deps="libfdk_aac"
2249 libfdk_aac_encoder_select="audio_frame_queue"
2250 libgsm_decoder_deps="libgsm"
2251 libgsm_encoder_deps="libgsm"
2252 libgsm_ms_decoder_deps="libgsm"
2253 libgsm_ms_encoder_deps="libgsm"
2254 libilbc_decoder_deps="libilbc"
2255 libilbc_encoder_deps="libilbc"
2256 libkvazaar_encoder_deps="libkvazaar"
2257 libmp3lame_encoder_deps="libmp3lame"
2258 libmp3lame_encoder_select="audio_frame_queue"
2259 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2260 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2261 libopencore_amrnb_encoder_select="audio_frame_queue"
2262 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2263 libopenh264_decoder_deps="libopenh264"
2264 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2265 libopenh264_encoder_deps="libopenh264"
2266 libopenjpeg_decoder_deps="libopenjpeg"
2267 libopenjpeg_encoder_deps="libopenjpeg"
2268 libopus_decoder_deps="libopus"
2269 libopus_encoder_deps="libopus"
2270 libopus_encoder_select="audio_frame_queue"
2271 libschroedinger_decoder_deps="libschroedinger"
2272 libschroedinger_encoder_deps="libschroedinger"
2273 libspeex_decoder_deps="libspeex"
2274 libspeex_encoder_deps="libspeex"
2275 libspeex_encoder_select="audio_frame_queue"
2276 libtheora_encoder_deps="libtheora"
2277 libtwolame_encoder_deps="libtwolame"
2278 libvo_aacenc_encoder_deps="libvo_aacenc"
2279 libvo_aacenc_encoder_select="audio_frame_queue"
2280 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2281 libvorbis_encoder_deps="libvorbis"
2282 libvorbis_encoder_select="audio_frame_queue"
2283 libvpx_vp8_decoder_deps="libvpx"
2284 libvpx_vp8_encoder_deps="libvpx"
2285 libvpx_vp9_decoder_deps="libvpx"
2286 libvpx_vp9_encoder_deps="libvpx"
2287 libwavpack_encoder_deps="libwavpack"
2288 libwebp_encoder_deps="libwebp"
2289 libx262_encoder_deps="libx262"
2290 libx264_encoder_deps="libx264"
2291 libx265_encoder_deps="libx265"
2292 libxavs_encoder_deps="libxavs"
2293 libxvid_encoder_deps="libxvid mkstemp"
2294
2295 # demuxers / muxers
2296 ac3_demuxer_select="ac3_parser"
2297 asf_demuxer_select="riffdec"
2298 asf_muxer_select="riffenc"
2299 asf_stream_muxer_select="asf_muxer"
2300 avi_demuxer_select="iso_media riffdec"
2301 avi_muxer_select="riffenc"
2302 avisynth_demuxer_deps="avisynth"
2303 avisynth_demuxer_select="riffdec"
2304 caf_demuxer_select="iso_media riffdec"
2305 dash_muxer_select="mp4_muxer"
2306 dirac_demuxer_select="dirac_parser"
2307 dv_demuxer_select="dvprofile"
2308 dv_muxer_select="dvprofile"
2309 dxa_demuxer_select="riffdec"
2310 eac3_demuxer_select="ac3_parser"
2311 f4v_muxer_select="mov_muxer"
2312 flac_demuxer_select="flac_parser"
2313 hds_muxer_select="flv_muxer"
2314 hls_muxer_select="mpegts_muxer"
2315 ipod_muxer_select="mov_muxer"
2316 ismv_muxer_select="mov_muxer"
2317 matroska_audio_muxer_select="matroska_muxer"
2318 matroska_demuxer_select="iso_media riffdec"
2319 matroska_demuxer_suggest="bzlib lzo zlib"
2320 matroska_muxer_select="iso_media riffenc"
2321 mmf_muxer_select="riffenc"
2322 mov_demuxer_select="iso_media riffdec"
2323 mov_demuxer_suggest="zlib"
2324 mov_muxer_select="iso_media riffenc rtpenc_chain"
2325 mp3_demuxer_select="mpegaudio_parser"
2326 mp4_muxer_select="mov_muxer"
2327 mpegts_demuxer_select="iso_media"
2328 mpegts_muxer_select="adts_muxer latm_muxer"
2329 mpegtsraw_demuxer_select="mpegts_demuxer"
2330 mxf_d10_muxer_select="mxf_muxer"
2331 nut_muxer_select="riffenc"
2332 nuv_demuxer_select="riffdec"
2333 oga_muxer_select="ogg_muxer"
2334 ogg_demuxer_select="dirac_parse"
2335 opus_muxer_select="ogg_muxer"
2336 psp_muxer_select="mov_muxer"
2337 rtp_demuxer_select="sdp_demuxer"
2338 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2339 rtsp_demuxer_select="http_protocol rtpdec"
2340 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2341 sap_demuxer_select="sdp_demuxer"
2342 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2343 sdp_demuxer_select="rtpdec"
2344 smoothstreaming_muxer_select="ismv_muxer"
2345 spdif_muxer_select="aac_parser"
2346 spx_muxer_select="ogg_muxer"
2347 swf_demuxer_suggest="zlib"
2348 tak_demuxer_select="tak_parser"
2349 tg2_muxer_select="mov_muxer"
2350 tgp_muxer_select="mov_muxer"
2351 w64_demuxer_select="wav_demuxer"
2352 wav_demuxer_select="riffdec"
2353 wav_muxer_select="riffenc"
2354 webm_muxer_select="iso_media riffenc"
2355 webm_muxer_suggest="libopus_encoder libvorbis_encoder libvpx_vp8_encoder libvpx_vp9_encoder"
2356 wtv_demuxer_select="mpegts_demuxer riffdec"
2357 xmv_demuxer_select="riffdec"
2358 xwma_demuxer_select="riffdec"
2359
2360 # indevs / outdevs
2361 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2362 alsa_outdev_deps="alsa_asoundlib_h"
2363 avfoundation_indev_deps="AVFoundation_AVFoundation_h"
2364 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2365 dv1394_indev_deps="dv1394"
2366 dv1394_indev_select="dv_demuxer"
2367 fbdev_indev_deps="linux_fb_h"
2368 jack_indev_deps="jack_jack_h"
2369 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2370 libcdio_indev_deps="libcdio"
2371 libdc1394_indev_deps="libdc1394"
2372 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2373 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2374 pulse_indev_deps="libpulse"
2375 sndio_indev_deps="sndio_h"
2376 sndio_outdev_deps="sndio_h"
2377 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2378 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2379 vfwcap_indev_extralibs="-lavicap32"
2380 xcbgrab_indev_deps="libxcb"
2381
2382 # protocols
2383 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2384 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2385 ffrtmpcrypt_protocol_select="tcp_protocol"
2386 ffrtmphttp_protocol_deps="!librtmp_protocol"
2387 ffrtmphttp_protocol_select="http_protocol"
2388 gopher_protocol_select="network"
2389 http_protocol_select="tcp_protocol"
2390 httpproxy_protocol_select="tcp_protocol"
2391 https_protocol_select="tls_protocol"
2392 icecast_protocol_select="http_protocol"
2393 librtmp_protocol_deps="librtmp"
2394 librtmpe_protocol_deps="librtmp"
2395 librtmps_protocol_deps="librtmp"
2396 librtmpt_protocol_deps="librtmp"
2397 librtmpte_protocol_deps="librtmp"
2398 mmsh_protocol_select="http_protocol"
2399 mmst_protocol_select="network"
2400 rtmp_protocol_deps="!librtmp_protocol"
2401 rtmp_protocol_select="tcp_protocol"
2402 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2403 rtmps_protocol_deps="!librtmp_protocol"
2404 rtmps_protocol_select="tls_protocol"
2405 rtmpt_protocol_select="ffrtmphttp_protocol"
2406 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2407 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2408 rtp_protocol_select="udp_protocol"
2409 sctp_protocol_deps="struct_sctp_event_subscribe"
2410 sctp_protocol_select="network"
2411 srtp_protocol_select="rtp_protocol srtp"
2412 tcp_protocol_select="network"
2413 tls_gnutls_protocol_deps="gnutls"
2414 tls_gnutls_protocol_select="tcp_protocol"
2415 tls_openssl_protocol_deps="openssl !tls_gnutls_protocol"
2416 tls_openssl_protocol_select="tcp_protocol"
2417 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2418 udp_protocol_select="network"
2419 unix_protocol_deps="sys_un_h"
2420 unix_protocol_select="network"
2421
2422 # filters
2423 blackframe_filter_deps="gpl"
2424 boxblur_filter_deps="gpl"
2425 bs2b_filter_deps="libbs2b"
2426 cropdetect_filter_deps="gpl"
2427 deinterlace_qsv_filter_deps="libmfx"
2428 delogo_filter_deps="gpl"
2429 drawtext_filter_deps="libfreetype"
2430 frei0r_filter_deps="frei0r dlopen"
2431 frei0r_filter_extralibs='$ldl'
2432 frei0r_src_filter_deps="frei0r dlopen"
2433 frei0r_src_filter_extralibs='$ldl'
2434 hdcd_filter_deps="libhdcd"
2435 hqdn3d_filter_deps="gpl"
2436 interlace_filter_deps="gpl"
2437 ocv_filter_deps="libopencv"
2438 resample_filter_deps="avresample"
2439 scale_filter_deps="swscale"
2440 scale_qsv_filter_deps="libmfx"
2441 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2442
2443 # examples
2444 decode_audio_example_deps="avcodec avutil"
2445 decode_video_example_deps="avcodec avutil"
2446 encode_audio_example_deps="avcodec avutil"
2447 encode_video_example_deps="avcodec avutil"
2448 filter_audio_example_deps="avfilter avutil"
2449 metadata_example_deps="avformat avutil"
2450 output_example_deps="avcodec avformat avutil swscale"
2451 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2452 transcode_aac_example_deps="avcodec avformat avresample"
2453
2454 # libraries, in linking order
2455 avcodec_deps="avutil"
2456 avdevice_deps="avformat avcodec avutil"
2457 avfilter_deps="avutil"
2458 avformat_deps="avcodec avutil"
2459 avresample_deps="avutil"
2460 swscale_deps="avutil"
2461
2462 # programs
2463 avconv_deps="avcodec avfilter avformat avresample swscale"
2464 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2465                fps_filter null_filter resample_filter scale_filter
2466                trim_filter"
2467 avplay_deps="avcodec avfilter avformat avresample sdl"
2468 avplay_libs='$sdl_libs'
2469 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2470 avprobe_deps="avcodec avformat"
2471
2472 # documentation
2473 pod2man_deps="doc"
2474 texi2html_deps="doc"
2475
2476 # default parameters
2477
2478 logfile="config.log"
2479
2480 # installation paths
2481 prefix_default="/usr/local"
2482 bindir_default='${prefix}/bin'
2483 datadir_default='${prefix}/share/avconv'
2484 docdir_default='${prefix}/share/doc/libav'
2485 incdir_default='${prefix}/include'
2486 libdir_default='${prefix}/lib'
2487 mandir_default='${prefix}/share/man'
2488 shlibdir_default="$libdir_default"
2489
2490 # toolchain
2491 ar_default="ar"
2492 cc_default="gcc"
2493 host_cc_default="gcc"
2494 cp_f="cp -f"
2495 ln_s="ln -s -f"
2496 nm_default="nm -g"
2497 objformat="elf"
2498 pkg_config_default=pkg-config
2499 ranlib="ranlib"
2500 strip="strip"
2501 version_script='--version-script'
2502 yasmexe="yasm"
2503
2504 # machine
2505 arch_default=$(uname -m)
2506 cpu="generic"
2507 intrinsics="none"
2508
2509 # OS
2510 target_os_default=$(tolower $(uname -s))
2511 host_os=$target_os_default
2512
2513 # configurable options
2514 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2515
2516 enable asm
2517 enable debug
2518 enable doc
2519 enable faan faandct faanidct
2520 enable optimizations
2521 enable safe_bitstream_reader
2522 enable static
2523 enable swscale_alpha
2524 enable valgrind_backtrace
2525
2526 # By default, enable only those hwaccels that have no external dependencies.
2527 enable d3d11va dxva2 vda vdpau
2528
2529 # build settings
2530 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2531 LIBPREF="lib"
2532 LIBSUF=".a"
2533 FULLNAME='$(NAME)$(BUILDSUF)'
2534 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2535 SLIBPREF="lib"
2536 SLIBSUF=".so"
2537 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2538 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2539 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2540 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2541 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2542 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2543 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2544
2545 asflags_filter=echo
2546 cflags_filter=echo
2547 ldflags_filter=echo
2548
2549 AS_C='-c'
2550 AS_O='-o $@'
2551 CC_C='-c'
2552 CC_E='-E -o $@'
2553 CC_O='-o $@'
2554 OBJCC_C='-c'
2555 OBJCC_E='-E -o $@'
2556 OBJCC_O='-o $@'
2557 LD_O='-o $@'
2558 LD_LIB='-l%'
2559 LD_PATH='-L'
2560 HOSTCC_C='-c'
2561 HOSTCC_E='-E -o $@'
2562 HOSTCC_O='-o $@'
2563 HOSTLD_O='-o $@'
2564
2565 host_libs='-lm'
2566 host_cflags_filter=echo
2567 host_ldflags_filter=echo
2568
2569 target_path='$(CURDIR)'
2570
2571 # since the object filename is not given with the -MM flag, the compiler
2572 # is only able to print the basename, and we must add the path ourselves
2573 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2574 DEPFLAGS='-MM'
2575
2576 # find source path
2577 if test -f configure; then
2578     source_path=.
2579 else
2580     source_path=$(cd $(dirname "$0"); pwd)
2581     echo "$source_path" | grep -q '[[:blank:]]' &&
2582         die "Out of tree builds are impossible with whitespace in source path."
2583     test -e "$source_path/config.h" &&
2584         die "Out of tree builds are impossible with config.h in source dir."
2585 fi
2586
2587 for v in "$@"; do
2588     r=${v#*=}
2589     l=${v%"$r"}
2590     r=$(sh_quote "$r")
2591     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2592 done
2593
2594 find_things(){
2595     thing=$1
2596     pattern=$2
2597     file=$source_path/$3
2598     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2599 }
2600
2601 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2602 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2603 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2604 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2605 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2606 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2607 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2608 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2609 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2610
2611 find_things_extern(){
2612     thing=$1
2613     pattern=$2
2614     file=$source_path/$3
2615     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2616 }
2617
2618 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2619 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2620
2621 ALL_COMPONENTS="
2622     $BSF_LIST
2623     $DECODER_LIST
2624     $DEMUXER_LIST
2625     $ENCODER_LIST
2626     $FILTER_LIST
2627     $HWACCEL_LIST
2628     $INDEV_LIST
2629     $MUXER_LIST
2630     $OUTDEV_LIST
2631     $PARSER_LIST
2632     $PROTOCOL_LIST
2633 "
2634
2635 for n in $COMPONENT_LIST; do
2636     v=$(toupper ${n%s})_LIST
2637     eval enable \$$v
2638     eval ${n}_if_any="\$$v"
2639 done
2640
2641 enable $ARCH_EXT_LIST
2642
2643 die_unknown(){
2644     echo "Unknown option \"$1\"."
2645     echo "See $0 --help for available options."
2646     exit 1
2647 }
2648
2649 print_3_columns() {
2650     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2651 }
2652
2653 show_list() {
2654     suffix=_$1
2655     shift
2656     echo $* | sed s/$suffix//g | print_3_columns
2657     exit 0
2658 }
2659
2660 rand_list(){
2661     IFS=', '
2662     set -- $*
2663     unset IFS
2664     for thing; do
2665         comp=${thing%:*}
2666         prob=${thing#$comp}
2667         prob=${prob#:}
2668         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2669         echo "prob ${prob:-0.5}"
2670         printf '%s\n' $comp
2671     done
2672 }
2673
2674 do_random(){
2675     action=$1
2676     shift
2677     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2678     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2679 }
2680
2681 for opt do
2682     optval="${opt#*=}"
2683     case "$opt" in
2684         --extra-ldflags=*)
2685             add_ldflags $optval
2686         ;;
2687         --extra-ldexeflags=*)
2688             add_ldexeflags $optval
2689         ;;
2690         --extra-libs=*)
2691             add_extralibs $optval
2692         ;;
2693         --disable-devices)
2694             disable $INDEV_LIST $OUTDEV_LIST
2695         ;;
2696         --enable-debug=*)
2697             debuglevel="$optval"
2698         ;;
2699         --disable-programs)
2700             disable $PROGRAM_LIST
2701         ;;
2702         --disable-everything)
2703             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2704         ;;
2705         --disable-all)
2706             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2707             disable $LIBRARY_LIST $PROGRAM_LIST doc
2708         ;;
2709         --enable-random|--disable-random)
2710             action=${opt%%-random}
2711             do_random ${action#--} $COMPONENT_LIST
2712         ;;
2713         --enable-random=*|--disable-random=*)
2714             action=${opt%%-random=*}
2715             do_random ${action#--} $optval
2716         ;;
2717         --enable-*=*|--disable-*=*)
2718             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2719             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2720             eval list=\$$(toupper $thing)_LIST
2721             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2722             $action $(filter "$name" $list)
2723         ;;
2724         --enable-avserver|--disable-avserver*)
2725             warn "avserver has been removed, the ${opt} option is only"\
2726                  "provided for compatibility and will be removed in the future"
2727         ;;
2728         --enable-?*|--disable-?*)
2729             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2730             if is_in $option $COMPONENT_LIST; then
2731                 test $action = disable && action=unset
2732                 eval $action \$$(toupper ${option%s})_LIST
2733             elif is_in $option $CMDLINE_SELECT; then
2734                 $action $option
2735             else
2736                 die_unknown $opt
2737             fi
2738         ;;
2739         --list-*)
2740             NAME="${opt#--list-}"
2741             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2742             NAME=${NAME%s}
2743             eval show_list $NAME \$$(toupper $NAME)_LIST
2744         ;;
2745         --help|-h) show_help
2746         ;;
2747         --quiet|-q) quiet=yes
2748         ;;
2749         *)
2750             optname="${opt%%=*}"
2751             optname="${optname#--}"
2752             optname=$(echo "$optname" | sed 's/-/_/g')
2753             if is_in $optname $CMDLINE_SET; then
2754                 eval $optname='$optval'
2755             elif is_in $optname $CMDLINE_APPEND; then
2756                 append $optname "$optval"
2757             else
2758                 die_unknown $opt
2759             fi
2760         ;;
2761     esac
2762 done
2763
2764 for e in $env; do
2765     eval "export $e"
2766 done
2767
2768 disabled logging && logfile=/dev/null
2769
2770 # Die early if licensing-related configure options are incompatible.
2771 die_license_disabled() {
2772     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2773 }
2774
2775 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
2776 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2777 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2778
2779 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2780
2781 # Disable all the library-specific components if the library itself
2782 # is disabled, see AVCODEC_LIST and following _LIST variables.
2783
2784 disable_components(){
2785     disabled ${1} && disable $(
2786         eval components="\$$(toupper ${1})_COMPONENTS"
2787         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2788     )
2789 }
2790
2791 map 'disable_components $v' $LIBRARY_LIST
2792
2793 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2794 set >> $logfile
2795
2796 case "$toolchain" in
2797     *-asan)
2798         cc_default="${toolchain%-asan}"
2799         add_cflags  -fsanitize=address
2800         add_ldflags -fsanitize=address
2801     ;;
2802     *-msan)
2803         cc_default="${toolchain%-msan}"
2804         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2805         add_ldflags -fsanitize=memory
2806     ;;
2807     *-tsan)
2808         cc_default="${toolchain%-tsan}"
2809         add_cflags  -fsanitize=thread -pie
2810         add_ldflags -fsanitize=thread -pie
2811         case "$toolchain" in
2812             gcc-tsan)
2813                 add_cflags  -fPIC
2814                 add_ldflags -fPIC
2815                 ;;
2816         esac
2817     ;;
2818     *-usan)
2819         cc_default="${toolchain%-usan}"
2820         add_cflags  -fsanitize=undefined
2821         add_ldflags -fsanitize=undefined
2822         case "$toolchain" in
2823             clang-usan)
2824                 add_cflags -O1
2825                 ;;
2826         esac
2827     ;;
2828     valgrind-*)
2829         target_exec_default="valgrind"
2830         case "$toolchain" in
2831             valgrind-massif)
2832                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2833                 ;;
2834             valgrind-memcheck)
2835                 target_exec_args="--track-origins=yes --leak-check=full"
2836                 ;;
2837         esac
2838     ;;
2839     msvc)
2840         # Check whether the current MSVC version needs the C99 converter.
2841         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2842         # support enough of C99 to build libav. Default to the new
2843         # behaviour if the regexp was unable to match anything, since this
2844         # successfully parses the version number of existing supported
2845         # versions that require the converter (MSVC 2010 and 2012).
2846         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2847         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2848             cc_default="cl"
2849         else
2850             cc_default="c99wrap cl"
2851         fi
2852         ld_default="$source_path/compat/windows/mslink"
2853         nm_default="dumpbin -symbols"
2854         ar_default="lib"
2855         case "$arch" in
2856         arm*)
2857             as_default="armasm"
2858             ;;
2859         esac
2860         target_os_default="win32"
2861         # Use a relative path for TMPDIR. This makes sure all the
2862         # ffconf temp files are written with a relative path, avoiding
2863         # issues with msys/win32 path conversion for MSVC parameters
2864         # such as -Fo<file> or -out:<file>.
2865         TMPDIR=.
2866     ;;
2867     icl)
2868         cc_default="icl"
2869         ld_default="xilink"
2870         nm_default="dumpbin -symbols"
2871         ar_default="xilib"
2872         target_os_default="win32"
2873         TMPDIR=.
2874     ;;
2875     gcov)
2876         add_cflags  -fprofile-arcs -ftest-coverage
2877         add_ldflags -fprofile-arcs -ftest-coverage
2878     ;;
2879     llvm-cov)
2880         add_cflags -fprofile-arcs -ftest-coverage
2881         add_ldflags --coverage
2882     ;;
2883     hardened)
2884         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2885         add_cflags   -fno-strict-overflow -fstack-protector-all
2886         add_ldflags  -Wl,-z,relro -Wl,-z,now
2887     ;;
2888     ?*)
2889         die "Unknown toolchain $toolchain"
2890     ;;
2891 esac
2892
2893 test -n "$cross_prefix" && enable cross_compile
2894
2895 if enabled cross_compile; then
2896     test -n "$arch" && test -n "$target_os" ||
2897         die "Must specify target arch and OS when cross-compiling"
2898 fi
2899
2900 ar_default="${cross_prefix}${ar_default}"
2901 cc_default="${cross_prefix}${cc_default}"
2902 occ_default="${cross_prefix}${occ_default}"
2903 nm_default="${cross_prefix}${nm_default}"
2904 pkg_config_default="${cross_prefix}${pkg_config_default}"
2905 ranlib="${cross_prefix}${ranlib}"
2906 strip="${cross_prefix}${strip}"
2907
2908 sysinclude_default="${sysroot}/usr/include"
2909
2910 set_default arch cc pkg_config sysinclude target_exec target_os
2911 enabled cross_compile || host_cc_default=$cc
2912 set_default host_cc
2913
2914 if ! $pkg_config --version >/dev/null 2>&1; then
2915     warn "$pkg_config not found, library detection may fail."
2916     pkg_config=false
2917 fi
2918
2919 exesuf() {
2920     case $1 in
2921         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2922     esac
2923 }
2924
2925 EXESUF=$(exesuf $target_os)
2926 HOSTEXESUF=$(exesuf $host_os)
2927
2928 # set temporary file name
2929 : ${TMPDIR:=$TEMPDIR}
2930 : ${TMPDIR:=$TMP}
2931 : ${TMPDIR:=/tmp}
2932
2933 if ! check_cmd mktemp -u XXXXXX; then
2934     # simple replacement for missing mktemp
2935     # NOT SAFE FOR GENERAL USE
2936     mktemp(){
2937         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2938     }
2939 fi
2940
2941 tmpfile(){
2942     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2943         (set -C; exec > $tmp) 2>/dev/null ||
2944         die "Unable to create temporary file in $TMPDIR."
2945     append TMPFILES $tmp
2946     eval $1=$tmp
2947 }
2948
2949 trap 'rm -f -- $TMPFILES' EXIT
2950
2951 tmpfile TMPASM .asm
2952 tmpfile TMPC   .c
2953 tmpfile TMPE   $EXESUF
2954 tmpfile TMPH   .h
2955 tmpfile TMPO   .o
2956 tmpfile TMPS   .S
2957 tmpfile TMPSH  .sh
2958 tmpfile TMPV   .ver
2959
2960 unset -f mktemp
2961
2962 chmod +x $TMPE
2963
2964 # make sure we can execute files in $TMPDIR
2965 cat > $TMPSH 2>> $logfile <<EOF
2966 #! /bin/sh
2967 EOF
2968 chmod +x $TMPSH >> $logfile 2>&1
2969 if ! $TMPSH >> $logfile 2>&1; then
2970     cat <<EOF
2971 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2972 variable to another directory and make sure that it is not mounted noexec.
2973 EOF
2974     die "Sanity test failed."
2975 fi
2976
2977 armasm_flags(){
2978     for flag; do
2979         case $flag in
2980             # Filter out MSVC cl.exe options from cflags that shouldn't
2981             # be passed to gas-preprocessor
2982             -M[TD]*)                                            ;;
2983             *)                  echo $flag                      ;;
2984         esac
2985    done
2986 }
2987
2988 ccc_flags(){
2989     for flag; do
2990         case $flag in
2991             -std=c99)           echo -c99                       ;;
2992             -mcpu=*)            echo -arch ${flag#*=}           ;;
2993             -mieee)             echo -ieee                      ;;
2994             -O*|-fast)          echo $flag                      ;;
2995             -fno-math-errno)    echo -assume nomath_errno       ;;
2996             -g)                 echo -g3                        ;;
2997             -Wall)              echo -msg_enable level2         ;;
2998             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2999             -Wl,*)              echo $flag                      ;;
3000             -f*|-W*)                                            ;;
3001             *)                  echo $flag                      ;;
3002         esac
3003    done
3004 }
3005
3006 cparser_flags(){
3007     for flag; do
3008         case $flag in
3009             -Wno-switch)             echo -Wno-switch-enum ;;
3010             -Wno-format-zero-length) ;;
3011             -Wdisabled-optimization) ;;
3012             -Wno-pointer-sign)       echo -Wno-other ;;
3013             *)                       echo $flag ;;
3014         esac
3015     done
3016 }
3017
3018 msvc_common_flags(){
3019     for flag; do
3020         case $flag in
3021             # In addition to specifying certain flags under the compiler
3022             # specific filters, they must be specified here as well or else the
3023             # generic catch all at the bottom will print the original flag.
3024             -Wall)                ;;
3025             -std=c99)             ;;
3026             # Common flags
3027             -fomit-frame-pointer) ;;
3028             -g)                   echo -Z7 ;;
3029             -fno-math-errno)      ;;
3030             -fno-common)          ;;
3031             -fno-signed-zeros)    ;;
3032             -fPIC)                ;;
3033             -mthumb)              ;;
3034             -march=*)             ;;
3035             -lz)                  echo zlib.lib ;;
3036             -lavifil32)           echo vfw32.lib ;;
3037             -lavicap32)           echo vfw32.lib user32.lib ;;
3038             -lx264)               echo libx264.lib ;;
3039             -l*)                  echo ${flag#-l}.lib ;;
3040             -L*)                  echo -libpath:${flag#-L} ;;
3041             *)                    echo $flag ;;
3042         esac
3043     done
3044 }
3045
3046 msvc_flags(){
3047     msvc_common_flags "$@"
3048     for flag; do
3049         case $flag in
3050             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3051                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3052                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3053                                        -wd4273 -wd4554 -wd4701 ;;
3054         esac
3055     done
3056 }
3057
3058 icl_flags(){
3059     msvc_common_flags "$@"
3060     for flag; do
3061         case $flag in
3062             # Despite what Intel's documentation says -Wall, which is supported
3063             # on Windows, does enable remarks so disable them here.
3064             -Wall)                echo $flag -Qdiag-disable:remark ;;
3065             -std=c99)             echo -Qstd=c99 ;;
3066         esac
3067     done
3068 }
3069
3070 pgi_flags(){
3071     for flag; do
3072         case $flag in
3073             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3074             -fomit-frame-pointer) echo -Mnoframe ;;
3075             -g)                   echo -gopt ;;
3076             *)                    echo $flag ;;
3077         esac
3078     done
3079 }
3080
3081 suncc_flags(){
3082     for flag; do
3083         case $flag in
3084             -march=*|-mcpu=*)
3085                 case "${flag#*=}" in
3086                     native)                   echo -xtarget=native       ;;
3087                     v9|niagara)               echo -xarch=sparc          ;;
3088                     ultrasparc)               echo -xarch=sparcvis       ;;
3089                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3090                     i586|pentium)             echo -xchip=pentium        ;;
3091                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3092                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3093                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3094                     pentium4*)          echo -xtarget=pentium4           ;;
3095                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3096                     *-sse3)             echo -xarch=sse3                 ;;
3097                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3098                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3099                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3100                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3101                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3102                     k8|opteron|athlon64|athlon-fx)
3103                                                echo -xarch=sse2a         ;;
3104                     athlon*)                   echo -xarch=pentium_proa  ;;
3105                 esac
3106                 ;;
3107             -std=c99)             echo -xc99              ;;
3108             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3109             -fPIC)                echo -KPIC -xcode=pic32 ;;
3110             -W*,*)                echo $flag              ;;
3111             -f*-*|-W*|-mimpure-text)                      ;;
3112             -shared)              echo -G                 ;;
3113             *)                    echo $flag              ;;
3114         esac
3115     done
3116 }
3117
3118 tms470_flags(){
3119     for flag; do
3120         case $flag in
3121             -march=*|-mcpu=*)
3122                 case "${flag#*=}" in
3123                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3124                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3125                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3126                     armv6*|arm11*)          echo -mv=6   ;;
3127                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3128                                             echo -mv=5e  ;;
3129                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3130                 esac
3131                 ;;
3132             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3133             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3134             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3135             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3136             -msoft-float)   echo --float_support=vfplib       ;;
3137             -O[0-3]|-mf=*)  echo $flag                        ;;
3138             -g)             echo -g -mn                       ;;
3139             -pds=*)         echo $flag                        ;;
3140             -D*|-I*)        echo $flag                        ;;
3141             --gcc|--abi=*)  echo $flag                        ;;
3142             -me)            echo $flag                        ;;
3143         esac
3144     done
3145 }
3146
3147 probe_cc(){
3148     pfx=$1
3149     _cc=$2
3150
3151     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3152     unset _ld_o _ldflags _ld_lib _ld_path
3153     unset _depflags _DEPCMD _DEPFLAGS
3154     _flags_filter=echo
3155
3156     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3157         _type=llvm_gcc
3158         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3159         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3160         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3161         _cflags_speed='-O3'
3162         _cflags_size='-Os'
3163     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3164         _type=gcc
3165         gcc_version=$($_cc --version | head -n1)
3166         gcc_basever=$($_cc -dumpversion)
3167         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3168         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3169         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3170         if ! $_cc -dumpversion | grep -q '^2\.'; then
3171             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3172         fi
3173         _cflags_speed='-O3'
3174         _cflags_size='-Os'
3175     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3176         _type=icc
3177         _ident=$($_cc --version | head -n1)
3178         _depflags='-MMD'
3179         _cflags_speed='-O3'
3180         _cflags_size='-Os'
3181         _cflags_noopt='-O1'
3182     elif $_cc -v 2>&1 | grep -q xlc; then
3183         _type=xlc
3184         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3185         _cflags_speed='-O5'
3186         _cflags_size='-O5 -qcompact'
3187     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3188         _type=ccc
3189         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3190         _DEPFLAGS='-M'
3191         _cflags_speed='-fast'
3192         _cflags_size='-O1'
3193         _flags_filter=ccc_flags
3194     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3195         test -d "$sysroot" || die "No valid sysroot specified."
3196         _type=armcc
3197         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3198         armcc_conf="$PWD/armcc.conf"
3199         $_cc --arm_linux_configure                 \
3200              --arm_linux_config_file="$armcc_conf" \
3201              --configure_sysroot="$sysroot"        \
3202              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3203              die "Error creating armcc configuration file."
3204         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3205         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3206         as_default="${cross_prefix}gcc"
3207         _depflags='-MMD'
3208         _cflags_speed='-O3'
3209         _cflags_size='-Os'
3210     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3211         _type=tms470
3212         _ident=$($_cc -version | head -n1 | tr -s ' ')
3213         _flags='--gcc --abi=eabi -me'
3214         _cc_e='-ppl -fe=$@'
3215         _cc_o='-fe=$@'
3216         _depflags='-ppa -ppd=$(@:.o=.d)'
3217         _cflags_speed='-O3 -mf=5'
3218         _cflags_size='-O3 -mf=2'
3219         _flags_filter=tms470_flags
3220     elif $_cc -v 2>&1 | grep -q clang; then
3221         _type=clang
3222         _ident=$($_cc --version 2>/dev/null | head -n1)
3223         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3224         _cflags_speed='-O3'
3225         _cflags_size='-Os'
3226     elif $_cc -V 2>&1 | grep -q Sun; then
3227         _type=suncc
3228         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3229         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3230         _DEPFLAGS='-xM1 -xc99'
3231         _ldflags='-std=c99'
3232         _cflags_speed='-O5'
3233         _cflags_size='-O5 -xspace'
3234         _flags_filter=suncc_flags
3235     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3236         _type=pathscale
3237         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3238         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3239         _cflags_speed='-O2'
3240         _cflags_size='-Os'
3241         _flags_filter='filter_out -Wdisabled-optimization'
3242     elif $_cc -v 2>&1 | grep -q Open64; then
3243         _type=open64
3244         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3245         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3246         _cflags_speed='-O2'
3247         _cflags_size='-Os'
3248         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3249     elif $_cc -V 2>&1 | grep -q Portland; then
3250         _type=pgi
3251         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3252         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3253         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3254         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3255         _cflags_noopt="-O1"
3256         _flags_filter=pgi_flags
3257     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3258         _type=armasm
3259         _ident=$($_cc | head -n1)
3260         # 4509: "This form of conditional instruction is deprecated"
3261         _flags="-nologo -ignore 4509"
3262         _flags_filter=armasm_flags
3263     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3264         _type=msvc
3265         _ident=$($_cc 2>&1 | head -n1)
3266         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3267         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3268         _cflags_speed="-O2"
3269         _cflags_size="-O1"
3270         if $_cc -nologo- 2>&1 | grep -q Linker; then
3271             _ld_o='-out:$@'
3272         else
3273             _ld_o='-Fe$@'
3274         fi
3275         _cc_o='-Fo$@'
3276         _cc_e='-P -Fi$@'
3277         _flags_filter=msvc_flags
3278         _ld_lib='lib%.a'
3279         _ld_path='-libpath:'
3280         _flags='-nologo'
3281     elif $_cc 2>&1 | grep -q Intel; then
3282         _type=icl
3283         _ident=$($_cc 2>&1 | head -n1)
3284         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3285         # Not only is O3 broken on 13.x+ but it is slower on all previous
3286         # versions (tested) as well.
3287         _cflags_speed="-O2"
3288         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3289         if $_cc 2>&1 | grep -q Linker; then
3290             _ld_o='-out:$@'
3291         else
3292             _ld_o='-Fe$@'
3293         fi
3294         _cc_o='-Fo$@'
3295         _cc_e='-P'
3296         _flags_filter=icl_flags
3297         _ld_lib='lib%.a'
3298         _ld_path='-libpath:'
3299         # -Qdiag-error to make icl error when seeing certain unknown arguments
3300         _flags='-nologo -Qdiag-error:4044,10157'
3301         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3302         # with MSVC which enables it by default.
3303         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3304     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3305         # lld can emulate multiple different linkers; in ms link.exe mode,
3306         # the -? parameter gives the help output which contains an identifyable
3307         # string, while it gives an error in other modes.
3308         _type=lld-link
3309         # The link.exe mode doesn't have a switch for getting the version,
3310         # but we can force it back to gnu mode and get the version from there.
3311         _ident=$($_cc -flavor gnu --version 2>/dev/null)
3312         _ld_o='-out:$@'
3313         _flags_filter=msvc_flags
3314         _ld_lib='lib%.a'
3315         _ld_path='-libpath:'
3316     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3317         _type=cparser
3318         _ident=$($_cc --version | head -n1)
3319         _depflags='-MMD'
3320         _cflags_speed='-O4'
3321         _cflags_size='-O2'
3322         _flags_filter=cparser_flags
3323     fi
3324
3325     eval ${pfx}_type=\$_type
3326     eval ${pfx}_ident=\$_ident
3327 }
3328
3329 set_ccvars(){
3330     eval ${1}_C=\${_cc_c-\${${1}_C}}
3331     eval ${1}_E=\${_cc_e-\${${1}_E}}
3332     eval ${1}_O=\${_cc_o-\${${1}_O}}
3333
3334     if [ -n "$_depflags" ]; then
3335         eval ${1}_DEPFLAGS=\$_depflags
3336     else
3337         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3338         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3339         eval DEP${1}FLAGS=\$_flags
3340     fi
3341 }
3342
3343 probe_cc cc "$cc"
3344 cflags_filter=$_flags_filter
3345 cflags_speed=$_cflags_speed
3346 cflags_size=$_cflags_size
3347 cflags_noopt=$_cflags_noopt
3348 add_cflags $_flags $_cflags
3349 cc_ldflags=$_ldflags
3350 set_ccvars CC
3351
3352 probe_cc hostcc "$host_cc"
3353 host_cflags_filter=$_flags_filter
3354 add_host_cflags  $_flags $_cflags
3355 set_ccvars HOSTCC
3356
3357 test -n "$cc_type" && enable $cc_type ||
3358     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3359
3360 : ${as_default:=$cc}
3361 : ${objcc_default:=$cc}
3362 : ${dep_cc_default:=$cc}
3363 : ${ld_default:=$cc}
3364 : ${host_ld_default:=$host_cc}
3365 set_default ar as objcc dep_cc ld host_ld
3366
3367 probe_cc as "$as"
3368 asflags_filter=$_flags_filter
3369 add_asflags $_flags $_cflags
3370 set_ccvars AS
3371
3372 probe_cc objcc "$objcc"
3373 objcflags_filter=$_flags_filter
3374 add_objcflags $_flags $_cflags
3375 set_ccvars OBJC
3376
3377 probe_cc ld "$ld"
3378 ldflags_filter=$_flags_filter
3379 add_ldflags $_flags $_ldflags
3380 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3381 LD_O=${_ld_o-$LD_O}
3382 LD_LIB=${_ld_lib-$LD_LIB}
3383 LD_PATH=${_ld_path-$LD_PATH}
3384
3385 probe_cc hostld "$host_ld"
3386 host_ldflags_filter=$_flags_filter
3387 add_host_ldflags $_flags $_ldflags
3388 HOSTLD_O=${_ld_o-$HOSTLD_O}
3389
3390 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3391     probe_cc depcc "$dep_cc"
3392     CCDEP=${_DEPCMD:-$DEPCMD}
3393     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3394     DEPCCFLAGS=$_flags
3395 fi
3396
3397 if $ar 2>&1 | grep -q Microsoft; then
3398     arflags="-nologo"
3399     ar_o='-out:$@'
3400 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3401     arflags="rq"
3402     ar_o='$@'
3403 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3404     arflags='-Xany -r -c'
3405     ar_o='$@'
3406 else
3407     arflags="rc"
3408     ar_o='$@'
3409 fi
3410
3411 add_cflags $extra_cflags
3412 add_objcflags $extra_objcflags
3413 add_asflags $extra_cflags
3414
3415 if test -n "$sysroot"; then
3416     case "$cc_type" in
3417         gcc|llvm_gcc|clang)
3418             add_cppflags --sysroot="$sysroot"
3419             add_ldflags --sysroot="$sysroot"
3420         ;;
3421         tms470)
3422             add_cppflags -I"$sysinclude"
3423             add_ldflags  --sysroot="$sysroot"
3424         ;;
3425     esac
3426 fi
3427
3428 if test "$cpu" = host; then
3429     enabled cross_compile &&
3430         die "--cpu=host makes no sense when cross-compiling."
3431
3432     case "$cc_type" in
3433         gcc|llvm_gcc)
3434             check_native(){
3435                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3436                 sed -n "/cc1.*$1=/{
3437                             s/.*$1=\\([^ ]*\\).*/\\1/
3438                             p
3439                             q
3440                         }" $TMPE
3441             }
3442             cpu=$(check_native -march || check_native -mcpu)
3443         ;;
3444     esac
3445
3446     test "${cpu:-host}" = host &&
3447         die "--cpu=host not supported with compiler $cc"
3448 fi
3449
3450 # Deal with common $arch aliases
3451 case "$arch" in
3452     aarch64|arm64)
3453         arch="aarch64"
3454     ;;
3455     arm*)
3456         arch="arm"
3457     ;;
3458     mips*|IP*)
3459         case "$arch" in
3460         *el)
3461             add_cppflags -EL
3462             add_ldflags -EL
3463         ;;
3464         *eb)
3465             add_cppflags -EB
3466             add_ldflags -EB
3467         ;;
3468         esac
3469         arch="mips"
3470     ;;
3471     parisc*|hppa*)
3472         arch="parisc"
3473     ;;
3474     "Power Macintosh"|ppc*|powerpc*)
3475         arch="ppc"
3476     ;;
3477     s390|s390x)
3478         arch="s390"
3479     ;;
3480     sh4|sh)
3481         arch="sh4"
3482     ;;
3483     sun4u|sparc*)
3484         arch="sparc"
3485     ;;
3486     tilegx|tile-gx)
3487         arch="tilegx"
3488     ;;
3489     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3490         arch="x86"
3491     ;;
3492 esac
3493
3494 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3495 enable $arch
3496
3497 # Add processor-specific flags
3498 if enabled aarch64; then
3499
3500     case $cpu in
3501         armv*)
3502             cpuflags="-march=$cpu"
3503         ;;
3504         *)
3505             cpuflags="-mcpu=$cpu"
3506         ;;
3507     esac
3508
3509 elif enabled alpha; then
3510
3511     cpuflags="-mcpu=$cpu"
3512
3513 elif enabled arm; then
3514
3515     check_arm_arch() {
3516         check_cpp_condition stddef.h \
3517             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3518             $cpuflags
3519     }
3520
3521     probe_arm_arch() {
3522         if   check_arm_arch 4;        then echo armv4
3523         elif check_arm_arch 4T;       then echo armv4t
3524         elif check_arm_arch 5;        then echo armv5
3525         elif check_arm_arch 5E;       then echo armv5e
3526         elif check_arm_arch 5T;       then echo armv5t
3527         elif check_arm_arch 5TE;      then echo armv5te
3528         elif check_arm_arch 5TEJ;     then echo armv5te
3529         elif check_arm_arch 6;        then echo armv6
3530         elif check_arm_arch 6J;       then echo armv6j
3531         elif check_arm_arch 6K;       then echo armv6k
3532         elif check_arm_arch 6Z;       then echo armv6z
3533         elif check_arm_arch 6ZK;      then echo armv6zk
3534         elif check_arm_arch 6T2;      then echo armv6t2
3535         elif check_arm_arch 7;        then echo armv7
3536         elif check_arm_arch 7A  7_A;  then echo armv7-a
3537         elif check_arm_arch 7S;       then echo armv7-a
3538         elif check_arm_arch 7R  7_R;  then echo armv7-r
3539         elif check_arm_arch 7M  7_M;  then echo armv7-m
3540         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3541         elif check_arm_arch 8A  8_A;  then echo armv8-a
3542         fi
3543     }
3544
3545     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3546
3547     case $cpu in
3548         armv*)
3549             cpuflags="-march=$cpu"
3550             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3551         ;;
3552         *)
3553             cpuflags="-mcpu=$cpu"
3554             case $cpu in
3555                 cortex-a*)                               subarch=armv7a  ;;
3556                 cortex-r*)                               subarch=armv7r  ;;
3557                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3558                 arm11*)                                  subarch=armv6   ;;
3559                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3560                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3561                 *)                             subarch=$(probe_arm_arch) ;;
3562             esac
3563         ;;
3564     esac
3565
3566     case "$subarch" in
3567         armv5t*)    enable fast_clz                ;;
3568         armv[6-8]*) enable fast_clz fast_unaligned ;;
3569     esac
3570
3571 elif enabled avr32; then
3572
3573     case $cpu in
3574         ap7[02]0[0-2])
3575             subarch="avr32_ap"
3576             cpuflags="-mpart=$cpu"
3577         ;;
3578         ap)
3579             subarch="avr32_ap"
3580             cpuflags="-march=$cpu"
3581         ;;
3582         uc3[ab]*)
3583             subarch="avr32_uc"
3584             cpuflags="-mcpu=$cpu"
3585         ;;
3586         uc)
3587             subarch="avr32_uc"
3588             cpuflags="-march=$cpu"
3589         ;;
3590     esac
3591
3592 elif enabled bfin; then
3593
3594     cpuflags="-mcpu=$cpu"
3595
3596 elif enabled mips; then
3597
3598     cpuflags="-march=$cpu"
3599
3600 elif enabled ppc; then
3601
3602     disable ldbrx
3603
3604     case $(tolower $cpu) in
3605         601|ppc601|powerpc601)
3606             cpuflags="-mcpu=601"
3607             disable altivec
3608         ;;
3609         603*|ppc603*|powerpc603*)
3610             cpuflags="-mcpu=603"
3611             disable altivec
3612         ;;
3613         604*|ppc604*|powerpc604*)
3614             cpuflags="-mcpu=604"
3615             disable altivec
3616         ;;
3617         g3|75*|ppc75*|powerpc75*)
3618             cpuflags="-mcpu=750"
3619             disable altivec
3620         ;;
3621         g4|745*|ppc745*|powerpc745*)
3622             cpuflags="-mcpu=7450"
3623             disable vsx
3624         ;;
3625         74*|ppc74*|powerpc74*)
3626             cpuflags="-mcpu=7400"
3627             disable vsx
3628         ;;
3629         g5|970|ppc970|powerpc970)
3630             cpuflags="-mcpu=970"
3631             disable vsx
3632         ;;
3633         power[3-6]*)
3634             cpuflags="-mcpu=$cpu"
3635             disable vsx
3636         ;;
3637         power[7-8]*)
3638             cpuflags="-mcpu=$cpu"
3639             enable ldbrx
3640         ;;
3641         cell)
3642             cpuflags="-mcpu=cell"
3643             enable ldbrx
3644             disable vsx
3645         ;;
3646         e500mc)
3647             cpuflags="-mcpu=e500mc"
3648             disable altivec
3649         ;;
3650         e500v2)
3651             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3652             disable altivec
3653             disable dcbzl
3654         ;;
3655         e500)
3656             cpuflags="-mcpu=8540 -mhard-float"
3657             disable altivec
3658             disable dcbzl
3659         ;;
3660     esac
3661
3662 elif enabled sparc; then
3663
3664     case $cpu in
3665         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3666             cpuflags="-mcpu=$cpu"
3667         ;;
3668         ultrasparc*|niagara[234])
3669             cpuflags="-mcpu=$cpu"
3670         ;;
3671     esac
3672
3673 elif enabled x86; then
3674
3675     case $cpu in
3676         i[345]86|pentium)
3677             cpuflags="-march=$cpu"
3678             disable i686
3679             disable mmx
3680         ;;
3681         # targets that do NOT support nopl and conditional mov (cmov)
3682         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3683             cpuflags="-march=$cpu"
3684             disable i686
3685         ;;
3686         # targets that do support nopl and conditional mov (cmov)
3687         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3688             cpuflags="-march=$cpu"
3689             enable i686
3690             enable fast_cmov
3691         ;;
3692         # targets that do support conditional mov but on which it's slow
3693         pentium4|pentium4m|prescott|nocona)
3694             cpuflags="-march=$cpu"
3695             enable i686
3696             disable fast_cmov
3697         ;;
3698     esac
3699
3700 fi
3701
3702 if [ "$cpu" != generic ]; then
3703     add_cflags  $cpuflags
3704     add_asflags $cpuflags
3705     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3706 fi
3707
3708 # compiler sanity check
3709 check_exec <<EOF
3710 int main(void){ return 0; }
3711 EOF
3712 if test "$?" != 0; then
3713     echo "$cc is unable to create an executable file."
3714     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3715         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3716         echo "Only do this if you know what cross compiling means."
3717     fi
3718     die "C compiler test failed."
3719 fi
3720
3721 add_cppflags -D_ISOC99_SOURCE
3722
3723 # some compilers silently accept -std=c11, so we also need to check that the
3724 # version macro is defined properly
3725 if test_cflags_cpp -std=c11 "__STDC_VERSION__ >= 201112L"; then
3726     add_cflags -std=c11
3727 else
3728     check_cflags -std=c99
3729 fi
3730
3731 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3732 #include <stdlib.h>
3733 EOF
3734 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3735 #include <stdlib.h>
3736 EOF
3737
3738 add_host_cppflags -D_ISOC99_SOURCE
3739 check_host_cflags -std=c99
3740 check_host_cflags -Wall
3741 check_host_cflags -O3
3742
3743 check_64bit(){
3744     arch32=$1
3745     arch64=$2
3746     expr=$3
3747     check_code cc "" "int test[2*($expr) - 1]" &&
3748         subarch=$arch64 || subarch=$arch32
3749 }
3750
3751 case "$arch" in
3752     aarch64|alpha|ia64)
3753         spic=$shared
3754     ;;
3755     mips)
3756         check_64bit mips mips64 '_MIPS_SIM > 1'
3757         spic=$shared
3758     ;;
3759     parisc)
3760         check_64bit parisc parisc64 'sizeof(void *) > 4'
3761         spic=$shared
3762     ;;
3763     ppc)
3764         check_64bit ppc ppc64 'sizeof(void *) > 4'
3765         spic=$shared
3766     ;;
3767     s390)
3768         check_64bit s390 s390x 'sizeof(void *) > 4'
3769         spic=$shared
3770     ;;
3771     sparc)
3772         check_64bit sparc sparc64 'sizeof(void *) > 4'
3773         spic=$shared
3774     ;;
3775     x86)
3776         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3777         if test "$subarch" = "x86_64"; then
3778             spic=$shared
3779         fi
3780     ;;
3781 esac
3782
3783 enable $subarch
3784 enabled spic && enable_weak pic
3785
3786 # OS specific
3787 case $target_os in
3788     aix)
3789         SHFLAGS=-shared
3790         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3791         enabled shared && add_ldflags -Wl,-brtl
3792         ;;
3793     android)
3794         disable symver
3795         enable section_data_rel_ro
3796         SLIB_INSTALL_NAME='$(SLIBNAME)'
3797         SLIB_INSTALL_LINKS=
3798         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3799         ;;
3800     haiku)
3801         prefix_default="/boot/common"
3802         network_extralibs="-lnetwork"
3803         host_libs=
3804         ;;
3805     sunos)
3806         SHFLAGS='-shared -Wl,-h,$$(@F)'
3807         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3808         network_extralibs="-lsocket -lnsl"
3809         # When using suncc to build, the Solaris linker will mark
3810         # an executable with each instruction set encountered by
3811         # the Solaris assembler.  As our libraries contain their own
3812         # guards for processor-specific code, instead suppress
3813         # generation of the HWCAPS ELF section on Solaris x86 only.
3814         enabled_all suncc x86 &&
3815             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3816             add_ldflags -Wl,-M,mapfile
3817         nm_default='nm -P -g'
3818         version_script='-M'
3819         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3820         ;;
3821     netbsd)
3822         disable symver
3823         oss_indev_extralibs="-lossaudio"
3824         oss_outdev_extralibs="-lossaudio"
3825         ;;
3826     openbsd|bitrig)
3827         disable symver
3828         SHFLAGS='-shared'
3829         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3830         SLIB_INSTALL_LINKS=
3831         oss_indev_extralibs="-lossaudio"
3832         oss_outdev_extralibs="-lossaudio"
3833         ;;
3834     dragonfly)
3835         disable symver
3836         ;;
3837     freebsd)
3838         ;;
3839     bsd/os)
3840         add_extralibs -lpoll -lgnugetopt
3841         ;;
3842     darwin)
3843         enabled ppc && add_asflags -force_cpusubtype_ALL
3844         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3845         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3846         add_ldflags -Wl,-dynamic,-search_paths_first
3847         SLIBSUF=".dylib"
3848         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3849         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3850         objformat="macho"
3851         enabled x86_64 && objformat="macho64"
3852         enabled_any pic shared ||
3853             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3854         check_header dispatch/dispatch.h &&
3855             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3856         ;;
3857     msys*)
3858         die "Native MSYS builds are discouraged, please use the MINGW environment."
3859         ;;
3860     mingw32*|mingw64*)
3861         if test $target_os = "mingw32ce"; then
3862             disable network
3863         else
3864             target_os=mingw32
3865         fi
3866         LIBTARGET=i386
3867         if enabled x86_64; then
3868             LIBTARGET="i386:x86-64"
3869         elif enabled arm; then
3870             LIBTARGET=arm-wince
3871         fi
3872         check_ldflags -Wl,--nxcompat
3873         check_ldflags -Wl,--dynamicbase
3874         shlibdir_default="$bindir_default"
3875         SLIBPREF=""
3876         SLIBSUF=".dll"
3877         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3878         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3879         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3880         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3881         SLIB_INSTALL_LINKS=
3882         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3883         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3884         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3885         objformat="win32"
3886         dlltool="${cross_prefix}dlltool"
3887         ranlib=:
3888         enable dos_paths
3889         ;;
3890     win32|win64)
3891         disable symver
3892         if enabled shared; then
3893             # Link to the import library instead of the normal static library
3894             # for shared libs.
3895             LD_LIB='%.lib'
3896             # Cannot build both shared and static libs with MSVC or icl.
3897             disable static
3898         fi
3899         shlibdir_default="$bindir_default"
3900         SLIBPREF=""
3901         SLIBSUF=".dll"
3902         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3903         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3904         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3905         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3906         SLIB_INSTALL_LINKS=
3907         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3908         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3909         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3910         objformat="win32"
3911         ranlib=:
3912         enable dos_paths
3913         ;;
3914     cygwin*)
3915         target_os=cygwin
3916         shlibdir_default="$bindir_default"
3917         SLIBPREF="cyg"
3918         SLIBSUF=".dll"
3919         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3920         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3921         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3922         SLIB_INSTALL_LINKS=
3923         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3924         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3925         objformat="win32"
3926         enable dos_paths
3927         ;;
3928     *-dos|freedos|opendos)
3929         network_extralibs="-lsocket"
3930         objformat="coff"
3931         enable dos_paths
3932         add_cppflags -U__STRICT_ANSI__
3933         ;;
3934     linux)
3935         enable dv1394
3936         enable section_data_rel_ro
3937         ;;
3938     irix*)
3939         target_os=irix
3940         ranlib="echo ignoring ranlib"
3941         ;;
3942     os/2*)
3943         ln_s="cp -f"
3944         objformat="aout"
3945         add_cppflags -D_GNU_SOURCE
3946         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3947         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3948         LIBSUF="_s.a"
3949         SLIBPREF=""
3950         SLIBSUF=".dll"
3951         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3952         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3953         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3954             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3955             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3956             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3957             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
3958         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3959             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3960         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3961         enable dos_paths
3962         ;;
3963     gnu/kfreebsd)
3964         add_cppflags -D_BSD_SOURCE
3965         ;;
3966     gnu)
3967         ;;
3968     qnx)
3969         add_cppflags -D_QNX_SOURCE
3970         network_extralibs="-lsocket"
3971         ;;
3972     symbian)
3973         SLIBSUF=".dll"
3974         enable dos_paths
3975         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3976         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3977         add_ldflags -Wl,--target1-abs,--no-undefined \
3978                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3979                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3980         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3981                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3982                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3983         ;;
3984     osf1)
3985         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3986         ;;
3987     minix)
3988         ;;
3989     plan9)
3990         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3991                      -D_REENTRANT_SOURCE        \
3992                      -D_RESEARCH_SOURCE         \
3993                      -DFD_SETSIZE=96            \
3994                      -DHAVE_SOCK_OPTS
3995         add_compat strtod.o strtod=avpriv_strtod
3996         network_extralibs='-lbsd'
3997         exeobjs=compat/plan9/main.o
3998         cp_f='cp'
3999         ;;
4000     none)
4001         ;;
4002     *)
4003         die "Unknown OS '$target_os'."
4004         ;;
4005 esac
4006
4007 # determine libc flavour
4008
4009 probe_libc(){
4010     pfx=$1
4011     pfx_no_=${pfx%_}
4012     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4013     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4014         eval ${pfx}libc_type=uclibc
4015         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4016     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4017         eval ${pfx}libc_type=glibc
4018         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4019     # MinGW headers can be installed on Cygwin, so check for newlib first.
4020     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4021         eval ${pfx}libc_type=newlib
4022         add_${pfx}cppflags -U__STRICT_ANSI__
4023     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4024     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4025         eval ${pfx}libc_type=mingw64
4026         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4027         eval test \$${pfx_no_}cc_type = "gcc" &&
4028             add_${pfx}cppflags -D__printf__=__gnu_printf__
4029     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4030          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4031         eval ${pfx}libc_type=mingw32
4032         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4033             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4034             die "ERROR: MinGW32 runtime version must be >= 3.15."
4035         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4036         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700__" &&
4037             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
4038         eval test \$${pfx_no_}cc_type = "gcc" &&
4039             add_${pfx}cppflags -D__printf__=__gnu_printf__
4040     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4041         eval ${pfx}libc_type=msvcrt
4042         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4043             if [ "$pfx" = host_ ]; then
4044                 add_host_cppflags -Dsnprintf=_snprintf
4045             else
4046                 add_compat strtod.o strtod=avpriv_strtod
4047                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4048                                              _snprintf=avpriv_snprintf  \
4049                                              vsnprintf=avpriv_vsnprintf
4050             fi
4051         fi
4052         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
4053         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4054         # 0x601 by default unless something else is set by the user.
4055         # This can easily lead to us detecting functions only present
4056         # in such new versions and producing binaries requiring windows 7.0.
4057         # Therefore explicitly set the default to XP unless the user has
4058         # set something else on the command line.
4059         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4060         # family. For these cases, configure is free to use any functions
4061         # found in the SDK headers by default. (Alternatively, we could force
4062         # _WIN32_WINNT to 0x0602 in that case.)
4063         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4064             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4065 #ifdef WINAPI_FAMILY
4066 #include <winapifamily.h>
4067 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4068 #error not desktop
4069 #endif
4070 #endif
4071 EOF
4072         if [ "$pfx" = "" ]; then
4073             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4074         fi
4075     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4076         eval ${pfx}libc_type=klibc
4077     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4078         eval ${pfx}libc_type=bionic
4079     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4080         eval ${pfx}libc_type=solaris
4081         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4082     else
4083         eval ${pfx}libc_type=default
4084         add_${pfx}cppflags -D_DEFAULT_SOURCE
4085     fi
4086 }
4087
4088 probe_libc
4089 test -n "$libc_type" && enable libc_$libc_type
4090 probe_libc host_
4091 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4092
4093 case $libc_type in
4094     bionic)
4095         add_compat strtod.o strtod=avpriv_strtod
4096         ;;
4097 esac
4098
4099 # hacks for compiler/libc/os combinations
4100
4101 if enabled_all tms470 libc_glibc; then
4102     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4103     add_cppflags -D__USER_LABEL_PREFIX__=
4104     add_cppflags -D__builtin_memset=memset
4105     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4106     add_cflags   -pds=48    # incompatible redefinition of macro
4107 fi
4108
4109 if enabled_all ccc libc_glibc; then
4110     add_ldflags -Wl,-z,now  # calls to libots crash without this
4111 fi
4112
4113 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4114     add_cppflags '-I\$(SRC_PATH)/compat/float'
4115
4116 esc(){
4117     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4118 }
4119
4120 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
4121
4122 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4123
4124 set_default $PATHS_LIST
4125 set_default nm
4126
4127 # we need to build at least one lib type
4128 if ! enabled_any static shared; then
4129     cat <<EOF
4130 At least one library type must be built.
4131 Specify --enable-static to build the static libraries or --enable-shared to
4132 build the shared libraries as well. To only build the shared libraries specify
4133 --disable-static in addition to --enable-shared.
4134 EOF
4135     exit 1
4136 fi
4137
4138 disabled optimizations || check_cflags -fomit-frame-pointer
4139
4140 enable_weak_pic() {
4141     disabled pic && return
4142     enable pic
4143     add_cppflags -DPIC
4144     case "$target_os" in
4145     mingw*|cygwin*)
4146         ;;
4147     *)
4148         add_cflags -fPIC
4149         ;;
4150     esac
4151     add_asflags  -fPIC
4152 }
4153
4154 enabled pic && enable_weak_pic
4155
4156 check_cc <<EOF || die "Symbol mangling check failed."
4157 int ff_extern;
4158 EOF
4159 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4160 extern_prefix=${sym%%ff_extern*}
4161
4162 check_cc <<EOF && enable_weak inline_asm
4163 void foo(void) { __asm__ volatile ("" ::); }
4164 EOF
4165
4166 _restrict=
4167 for restrict_keyword in restrict __restrict__ __restrict; do
4168     check_cc <<EOF && _restrict=$restrict_keyword && break
4169 void foo(char * $restrict_keyword p);
4170 EOF
4171 done
4172
4173 check_cc <<EOF && enable pragma_deprecated
4174 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4175 EOF
4176
4177 check_cc <<EOF && enable attribute_packed
4178 struct { int x; } __attribute__((packed)) x;
4179 EOF
4180
4181 check_cc <<EOF && enable attribute_may_alias
4182 union { int x; } __attribute__((may_alias)) x;
4183 EOF
4184
4185 check_cc <<EOF || die "endian test failed"
4186 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4187 EOF
4188 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4189
4190 check_gas() {
4191     log "check_gas using '$as' as AS"
4192     # :vararg is used on aarch64, arm and ppc altivec
4193     check_as <<EOF || return 1
4194 .macro m n, y:vararg=0
4195 \n: .int \y
4196 .endm
4197 m x
4198 EOF
4199     # .altmacro is only used in arm asm
4200     ! enabled arm || check_as <<EOF || return 1
4201 .altmacro
4202 EOF
4203     enable gnu_as
4204     return 0
4205 }
4206
4207 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4208     nogas=:
4209     enabled_any arm aarch64 && nogas=die
4210     enabled_all ppc altivec && nogas=warn
4211     as_noop=-v
4212
4213     case $as_type in
4214         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4215         gcc)  gaspp_as_type=gas ;;
4216         *)    gaspp_as_type=$as_type ;;
4217     esac
4218
4219     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4220
4221     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4222         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4223
4224     if ! check_gas ; then
4225         as=${gas:=$as}
4226         check_gas || \
4227             $nogas "GNU assembler not found, install/update gas-preprocessor"
4228     fi
4229
4230     check_as <<EOF && enable as_func
4231 .func test
4232 .endfunc
4233 EOF
4234 fi
4235
4236 check_inline_asm inline_asm_labels '"1:\n"'
4237
4238 if enabled aarch64; then
4239     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4240     # internal assembler in clang 3.3 does not support this instruction
4241     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4242     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4243
4244     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4245
4246 elif enabled alpha; then
4247
4248     check_cflags -mieee
4249
4250 elif enabled arm; then
4251
4252     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4253     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4254     enabled thumb && check_cflags -mthumb || check_cflags -marm
4255
4256     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4257         enable vfp_args
4258     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4259         enable vfp_args
4260     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4261         case "${cross_prefix:-$cc}" in
4262             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4263             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4264 __asm__ (".eabi_attribute 28, 1");
4265 int main(void) { return 0; }
4266 EOF
4267         esac
4268         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4269     fi
4270
4271     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4272     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4273     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4274     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4275     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4276     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4277
4278     [ $target_os = linux ] || [ $target_os = android ] ||
4279         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4280             $ARCH_EXT_LIST_ARM
4281
4282     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4283
4284     check_as <<EOF && enable as_dn_directive
4285 ra .dn d0.i16
4286 .unreq ra
4287 EOF
4288     check_as <<EOF && enable as_fpu_directive
4289 .fpu neon
4290 EOF
4291
4292     # llvm's integrated assembler supports .object_arch from llvm 3.5
4293     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4294 .object_arch armv4
4295 EOF
4296
4297     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4298
4299 elif enabled mips; then
4300
4301     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4302
4303     # make sure that only an instruction set is enabled
4304     disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4305
4306     if enabled mips64; then
4307         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4308             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4309                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4310     else
4311         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4312             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4313                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4314     fi
4315
4316 elif enabled parisc; then
4317
4318     if enabled gcc; then
4319         case $($cc -dumpversion) in
4320             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4321         esac
4322     fi
4323
4324 elif enabled ppc; then
4325
4326     enable local_aligned_8 local_aligned_16 local_aligned_32
4327
4328     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4329     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4330     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4331     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4332
4333     # AltiVec flags: The FSF version of GCC differs from the Apple version
4334     if enabled altivec; then
4335         check_cflags -maltivec -mabi=altivec &&
4336         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4337         check_cflags -faltivec
4338
4339         # check if our compiler supports Motorola AltiVec C API
4340         check_cc <<EOF || disable altivec
4341 $inc_altivec_h
4342 int main(void) {
4343     vector signed int v1 = (vector signed int) { 0 };
4344     vector signed int v2 = (vector signed int) { 1 };
4345     v1 = vec_add(v1, v2);
4346     return 0;
4347 }
4348 EOF
4349
4350         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4351     fi
4352
4353     if enabled vsx; then
4354         check_cflags -mvsx &&
4355         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4356     fi
4357
4358     if enabled power8; then
4359         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4360     fi
4361
4362 elif enabled x86; then
4363
4364     check_builtin rdtsc    intrin.h   "__rdtsc()"
4365     check_builtin mm_empty mmintrin.h "_mm_empty()"
4366
4367     enable local_aligned_8 local_aligned_16 local_aligned_32
4368
4369     # check whether EBP is available on x86
4370     # As 'i' is stored on the stack, this program will crash
4371     # if the base pointer is used to access it because the
4372     # base pointer is cleared in the inline assembly code.
4373     check_exec_crash <<EOF && enable ebp_available
4374 volatile int i=0;
4375 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4376 return i;
4377 EOF
4378
4379     # check whether EBX is available on x86
4380     check_inline_asm ebx_available '""::"b"(0)' &&
4381         check_inline_asm ebx_available '"":::"%ebx"'
4382
4383     # check whether xmm clobbers are supported
4384     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4385
4386     # check whether binutils is new enough to compile SSSE3/MMXEXT
4387     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4388     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4389
4390     if ! disabled_any asm mmx yasm; then
4391         if check_cmd $yasmexe --version; then
4392             enabled x86_64 && yasm_extra="-m amd64"
4393             yasm_debug="-g dwarf2"
4394         elif check_cmd nasm -v; then
4395             yasmexe=nasm
4396             yasm_debug="-g -F dwarf"
4397             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4398         fi
4399
4400         YASMFLAGS="-f $objformat $yasm_extra"
4401         enabled pic               && append YASMFLAGS "-DPIC"
4402         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4403         case "$objformat" in
4404             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4405         esac
4406
4407         check_yasm "movbe ecx, [5]" && enable yasm ||
4408             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4409         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4410         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4411         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4412         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4413         check_yasm "CPU amdnop" || disable cpunop
4414     fi
4415
4416     case "$cpu" in
4417         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4418             disable fast_clz
4419         ;;
4420     esac
4421
4422 fi
4423
4424 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4425
4426 check_ldflags -Wl,--as-needed
4427
4428 if check_func dlopen; then
4429     ldl=
4430 elif check_func dlopen -ldl; then
4431     ldl=-ldl
4432 fi
4433
4434 if ! disabled network; then
4435     check_func getaddrinfo $network_extralibs
4436     check_func inet_aton $network_extralibs
4437
4438     check_type netdb.h "struct addrinfo"
4439     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4440     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4441     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4442     check_type poll.h "struct pollfd"
4443     check_type netinet/sctp.h "struct sctp_event_subscribe"
4444     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4445     check_type netinet/in.h "struct sockaddr_in6"
4446     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4447     check_type "sys/types.h sys/socket.h" socklen_t
4448
4449     # Prefer arpa/inet.h over winsock2
4450     if check_header arpa/inet.h ; then
4451         check_func closesocket
4452     elif check_header winsock2.h ; then
4453         check_func_headers winsock2.h closesocket -lws2 &&
4454             network_extralibs="-lws2" ||
4455         { check_func_headers winsock2.h closesocket -lws2_32 &&
4456             network_extralibs="-lws2_32"; } || disable winsock2_h network
4457         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4458
4459         check_type ws2tcpip.h socklen_t
4460         check_type ws2tcpip.h "struct addrinfo"
4461         check_type ws2tcpip.h "struct group_source_req"
4462         check_type ws2tcpip.h "struct ip_mreq_source"
4463         check_type ws2tcpip.h "struct ipv6_mreq"
4464         check_type winsock2.h "struct pollfd"
4465         check_struct winsock2.h "struct sockaddr" sa_len
4466         check_type ws2tcpip.h "struct sockaddr_in6"
4467         check_type ws2tcpip.h "struct sockaddr_storage"
4468     else
4469         disable network
4470     fi
4471 fi
4472
4473 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4474 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4475 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4476 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4477
4478 case "$custom_allocator" in
4479     jemalloc)
4480         # jemalloc by default does not use a prefix
4481         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4482     ;;
4483     tcmalloc)
4484         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
4485         malloc_prefix=tc_
4486     ;;
4487 esac
4488
4489 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4490 check_func  ${malloc_prefix}memalign            && enable memalign
4491 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4492
4493 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4494     check_func_headers time.h clock_gettime ||
4495         { check_lib time.h clock_gettime -lrt && LIBRT="-lrt"; }
4496
4497 check_func  fcntl
4498 check_func  fork
4499 check_func  gethrtime
4500 check_func  getopt
4501 check_func  getrusage
4502 check_func  gettimeofday
4503 check_func  gmtime_r
4504 check_func  isatty
4505 check_func  localtime_r
4506 check_func  mach_absolute_time
4507 check_func  mkstemp
4508 check_func  mmap
4509 check_func  mprotect
4510 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4511 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt; }
4512 check_func  sched_getaffinity
4513 check_func  setrlimit
4514 check_func  strerror_r
4515 check_func  sysconf
4516 check_func  sysctl
4517 check_func  usleep
4518
4519 check_func_headers io.h setmode
4520 check_func_headers stdlib.h getenv
4521
4522 check_func_headers windows.h CoTaskMemFree -lole32
4523 check_func_headers windows.h GetProcessAffinityMask
4524 check_func_headers windows.h GetProcessTimes
4525 check_func_headers windows.h GetSystemTimeAsFileTime
4526 check_func_headers windows.h LoadLibrary
4527 check_func_headers windows.h MapViewOfFile
4528 check_func_headers windows.h SetConsoleTextAttribute
4529 check_func_headers windows.h Sleep
4530 check_func_headers windows.h VirtualAlloc
4531 check_struct windows.h "CONDITION_VARIABLE" Ptr
4532
4533 check_header direct.h
4534 check_header dlfcn.h
4535 check_header d3d11.h
4536 check_header dxva.h
4537 check_header dxva2api.h
4538 check_header io.h
4539 check_header mach/mach_time.h
4540 check_header malloc.h
4541 check_header poll.h
4542 check_header sys/mman.h
4543 check_header sys/param.h
4544 check_header sys/resource.h
4545 check_header sys/select.h
4546 check_header sys/time.h
4547 check_header sys/un.h
4548 check_header unistd.h
4549 check_header valgrind/valgrind.h
4550 check_header vdpau/vdpau.h
4551 check_header vdpau/vdpau_x11.h
4552 check_header VideoDecodeAcceleration/VDADecoder.h
4553 check_header windows.h
4554 check_header X11/extensions/XvMClib.h
4555
4556 # it seems there are versions of clang in some distros that try to use the
4557 # gcc headers, which explodes for stdatomic
4558 # so we also check that atomics actually work here
4559 check_builtin stdatomic_h stdatomic.h "atomic_int foo; atomic_store(&foo, 0)"
4560
4561 check_lib "windows.h shellapi.h" CommandLineToArgvW   -lshell32
4562 check_lib "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
4563 check_lib "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
4564
4565 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4566
4567 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4568 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4569 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4570
4571 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
4572 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
4573 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
4574 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
4575 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
4576
4577 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
4578
4579 if ! disabled w32threads && ! enabled pthreads; then
4580     check_func_headers "windows.h process.h" _beginthreadex &&
4581         enable w32threads || disable w32threads
4582 fi
4583
4584 # check for some common methods of building with pthread support
4585 # do this before the optional library checks as some of them require pthreads
4586 if ! disabled pthreads && ! enabled w32threads; then
4587     enable pthreads
4588     if check_func pthread_join -pthread; then
4589         add_cflags -pthread
4590         add_extralibs -pthread
4591     elif check_func pthread_join -pthreads; then
4592         add_cflags -pthreads
4593         add_extralibs -pthreads
4594     elif check_func pthread_join -lpthreadGC2; then
4595         add_extralibs -lpthreadGC2
4596     elif check_lib pthread.h pthread_join -lpthread; then
4597         :
4598     elif ! check_func pthread_join; then
4599         disable pthreads
4600     fi
4601 fi
4602
4603 enabled pthreads &&
4604     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
4605
4606 disabled  zlib || check_lib  zlib.h      zlibVersion -lz   || disable  zlib
4607 disabled bzlib || check_lib bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4608
4609 check_lib math.h sin -lm && LIBM="-lm"
4610
4611 atan2f_args=2
4612 ldexpf_args=2
4613 powf_args=2
4614
4615 for func in $MATH_FUNCS; do
4616     eval check_mathfunc $func \${${func}_args:-1}
4617 done
4618
4619 # these are off by default, so fail if requested and not available
4620 enabled avisynth          && { check_lib "avisynth/avisynth_c.h windows.h" LoadLibrary ||
4621                                check_lib "avxsynth/avxsynth_c.h dlfcn.h" dlopen -ldl   ||
4622                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4623 enabled cuda              && check_lib cuda.h cuInit -lcuda
4624 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4625 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4626 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4627 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4628 enabled libfaac           && require libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4629 enabled libfdk_aac        && require_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4630 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4631 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4632 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4633                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4634                                done || die "ERROR: libgsm not found"; }
4635 enabled libhdcd           && require_pkg_config libhdcd "hdcd/hdcd_simple.h" hdcd_new
4636 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4637 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
4638 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
4639 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4640 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
4641 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4642 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4643 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4644 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
4645 enabled libopenjpeg       && { check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4646                                require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; }
4647 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4648 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4649 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4650 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4651 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
4652 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
4653 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4654 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4655 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4656 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4657 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4658 enabled libvpx            && require_pkg_config "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version && {
4659     enabled libvpx_vp8_decoder && {
4660         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
4661             disable libvpx_vp8_decoder;
4662     }
4663     enabled libvpx_vp8_encoder && {
4664         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
4665             disable libvpx_vp8_encoder;
4666     }
4667     enabled libvpx_vp9_decoder && {
4668         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
4669             disable libvpx_vp9_decoder;
4670     }
4671     enabled libvpx_vp9_encoder && {
4672         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
4673             disable libvpx_vp9_encoder;
4674     }
4675     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
4676         die "libvpx enabled but no supported decoders found"
4677     fi
4678 }
4679 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4680 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4681 enabled libx264           && require_pkg_config x264 "stdint.h x264.h" x264_encoder_encode &&
4682                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4683                                die "ERROR: libx264 version must be >= 0.118."; } &&
4684                              { check_cpp_condition x264.h "X264_MPEG2" &&
4685                                enable libx262; }
4686 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
4687                              { check_cpp_condition x265.h "X265_BUILD >= 57" ||
4688                                die "ERROR: libx265 version must be >= 57."; }
4689 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
4690 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4691 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4692                                 { ! enabled cross_compile && {
4693                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
4694                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
4695                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
4696                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
4697                                die "ERROR: mmal not found"; }
4698 enabled mmal && check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"
4699 enabled omx_rpi && enable omx
4700 enabled omx               && { check_header OMX_Core.h ||
4701                                 { ! enabled cross_compile && enabled omx_rpi && {
4702                                     add_cflags -isystem/opt/vc/include/IL ; }
4703                                 check_header OMX_Core.h ; } ||
4704                                die "ERROR: OpenMAX IL headers not found"; }
4705 enabled openssl           && { { check_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
4706                                  check_pkg_config openssl openssl/ssl.h SSL_library_init; } && {
4707                                add_cflags $openssl_cflags && add_extralibs $openssl_libs; }||
4708                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4709                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4710                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4711                                die "ERROR: openssl not found"; }
4712
4713 if enabled gnutls; then
4714     { check_lib gmp.h mpz_export -lgmp && enable gmp; } ||
4715     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4716 fi
4717
4718 # libdc1394 check
4719 if enabled libdc1394; then
4720     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
4721         enable libdc1394_2; } ||
4722     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4723         enable libdc1394_1; } ||
4724     die "ERROR: No version of libdc1394 found "
4725 fi
4726
4727 if enabled nvenc; then
4728     check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."
4729     check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6" ||
4730         die "ERROR: NVENC API version 5 or older is not supported"
4731 fi
4732
4733 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4734     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4735     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4736     enable sdl
4737 fi
4738
4739 ! disabled pod2man   && check_cmd pod2man --help     && enable pod2man   || disable pod2man
4740 ! disabled texi2html && check_cmd texi2html -version && enable texi2html || disable texi2html
4741
4742 check_header linux/fb.h
4743 check_header linux/videodev2.h
4744 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4745
4746 check_header AVFoundation/AVFoundation.h &&
4747     check_objcflags -fobjc-arc &&
4748     add_extralibs -framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia ||
4749     disable AVFoundation_AVFoundation_h
4750
4751 check_header sys/videoio.h
4752
4753 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4754 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4755 # w32api 3.12 had it defined wrong
4756 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4757
4758 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4759 { check_header dev/bktr/ioctl_meteor.h &&
4760   check_header dev/bktr/ioctl_bt848.h; } ||
4761 { check_header machine/ioctl_meteor.h &&
4762   check_header machine/ioctl_bt848.h; } ||
4763 { check_header dev/video/meteor/ioctl_meteor.h &&
4764   check_header dev/video/bktr/ioctl_bt848.h; } ||
4765 check_header dev/ic/bt8xx.h
4766
4767 check_header sndio.h
4768 check_header sys/soundcard.h
4769 check_header soundcard.h
4770
4771 enabled_any alsa_indev alsa_outdev &&
4772     check_lib alsa/asoundlib.h snd_pcm_htimestamp -lasound
4773
4774 enabled jack_indev && check_lib jack/jack.h jack_client_open -ljack &&
4775     check_func jack_port_get_latency_range -ljack
4776
4777 enabled_any sndio_indev sndio_outdev && check_lib sndio.h sio_open -lsndio
4778
4779 if enabled libcdio; then
4780     check_lib "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4781     check_lib "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4782     die "ERROR: No usable libcdio/cdparanoia found"
4783 fi
4784
4785 if enabled libxcb; then
4786     check_pkg_config xcb-shape xcb/shape.h xcb_shape_rectangles || {
4787         enabled libxcb && die "ERROR: libxcb not found";
4788     } && enable libxcb
4789
4790     disabled libxcb_shm ||
4791         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
4792             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
4793         } && check_header sys/shm.h && enable libxcb_shm
4794
4795     disabled libxcb_xfixes ||
4796         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
4797             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
4798         } && enable libxcb_xfixes
4799
4800     add_cflags "$xcb_shape_cflags $xcb_event_cflags $xcb_shm_cflags $xcb_xfixes_cflags"
4801     add_extralibs "$xcb_shape_libs $xcb_event_libs $xcb_shm_libs $xcb_xfixes_libs"
4802 fi
4803
4804 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4805
4806 enabled vaapi &&
4807     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||