build: Add an internal component for hevc_ps code
[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-avxsynth          Linux version of AviSynth
192   --enable-bzlib             bzip2 compression [autodetect]
193   --enable-frei0r            video filtering plugins
194   --enable-gnutls            crypto
195   --enable-libbs2b           Bauer stereophonic-to-binaural DSP
196   --enable-libcdio           audio CD input
197   --enable-libdc1394         IEEE 1394/Firewire camera input
198   --enable-libdcadec         DCA audio decoding
199   --enable-libfaac           AAC audio encoding
200   --enable-libfdk-aac        AAC audio encoding/decoding
201   --enable-libfontconfig     font configuration and management
202   --enable-libfreetype       font rendering
203   --enable-libgsm            GSM audio encoding/decoding
204   --enable-libhdcd           HDCD decoding filter
205   --enable-libilbc           ILBC audio encoding/decoding
206   --enable-libkvazaar        HEVC video encoding
207   --enable-libmp3lame        MP3 audio encoding
208   --enable-libopencore-amrnb AMR-NB audio encoding/decoding
209   --enable-libopencore-amrwb AMR-WB audio decoding
210   --enable-libopencv         computer vision
211   --enable-libopenh264       H.264 video encoding/decoding
212   --enable-libopenjpeg       JPEG 2000 image encoding/decoding
213   --enable-libopus           Opus audio encoding/decoding
214   --enable-libpulse          Pulseaudio sound server
215   --enable-librtmp           RTMP streaming
216   --enable-libschroedinger   Dirac video encoding/decoding
217   --enable-libsnappy         snappy compression
218   --enable-libspeex          Speex audio encoding/decoding
219   --enable-libtheora         Theora video encoding/decoding
220   --enable-libtwolame        MP2 audio encoding
221   --enable-libvo-aacenc      AAC audio encoding
222   --enable-libvo-amrwbenc    AMR-WB audio encoding
223   --enable-libvorbis         Vorbis audio encoding/decoding
224   --enable-libvpx            VP* video encoding/decoding
225   --enable-libwavpack        Wavpack audio encoding/decoding
226   --enable-libwebp           WebP image encoding/decoding
227   --enable-libx264           H.264 video encoding
228   --enable-libx265           HEVC video encoding
229   --enable-libxavs           Chinese AVS video encoding
230   --enable-libxcb            X window system protocol communication
231   --enable-libxcb-shm        X11 shm communication [auto]
232   --enable-libxcb-xfixes     X11 mouse rendering [auto]
233   --enable-libxvid           MPEG-4 ASP video encoding
234   --enable-openssl           crypto
235   --enable-zlib              compression [autodetect]
236
237   The following libraries provide various hardware acceleration features:
238   --enable-cuda    Nvidia CUDA (dynamically linked)
239   --enable-d3d11va Microsoft Direct3D 11 video acceleration [auto]
240   --enable-dxva2   Microsoft DirectX 9 video acceleration [auto]
241   --enable-libmfx  Intel MediaSDK (AKA Quick Sync Video)
242   --enable-libnpp  Nvidia CUDA processing
243   --enable-mmal    Broadcom Multi-Media Abstraction Layer (Raspberry Pi)
244   --enable-nvenc   Nvidia video encoding
245   --enable-omx     OpenMAX IL
246   --enable-omx-rpi OpenMAX IL for Raspberry Pi
247   --enable-vaapi   Video Acceleration API (mainly Unix/Intel)
248   --enable-vda     Apple Video Decode Acceleration [auto]
249   --enable-vdpau   Nvidia Video Decode and Presentation API for Unix [auto]
250
251 Toolchain options:
252   --arch=ARCH              select architecture [$arch]
253   --cpu=CPU                select the minimum required CPU (affects
254                            instruction selection, may crash on older CPUs)
255   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
256   --enable-cross-compile   assume a cross-compiler is used
257   --sysroot=PATH           root of cross-build tree
258   --sysinclude=PATH        location of cross-build system headers
259   --target-os=OS           compiler targets OS [$target_os]
260   --target-exec=CMD        command to run executables on target
261   --target-path=DIR        path to view of build directory on target
262   --target-samples=DIR     path to samples directory on target
263   --toolchain=NAME         set tool defaults according to NAME
264   --nm=NM                  use nm tool
265   --ar=AR                  use archive tool AR [$ar_default]
266   --as=AS                  use assembler AS [$as_default]
267   --cc=CC                  use C compiler CC [$cc_default]
268   --objcc=OCC              use ObjC compiler OCC [$cc_default]
269   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
270   --ld=LD                  use linker LD
271   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
272   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
273   --host-cc=HOSTCC         use host C compiler HOSTCC
274   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
275   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
276   --host-ld=HOSTLD         use host linker HOSTLD
277   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
278   --host-libs=HLIBS        use libs HLIBS when linking for host
279   --host-os=OS             compiler host OS [$target_os]
280   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
281   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
282   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
283   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
284   --extra-libs=ELIBS       add ELIBS [$ELIBS]
285   --extra-version=STRING   version string suffix []
286   --optflags=OPTFLAGS      override optimization-related compiler flags
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) printf '%s ' $v ;; esac"
433     done
434 }
435
436 filter_out(){
437     pat=$1
438     shift
439     for v; do
440         eval "case $v in $pat) ;; *) printf '%s ' $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_cflags_headers(){
720     append CFLAGS_HEADERS $($cflags_filter "$@")
721 }
722
723 add_asflags(){
724     append ASFLAGS $($asflags_filter "$@")
725 }
726
727 add_objcflags(){
728     append OBJCFLAGS $($objcflags_filter "$@")
729 }
730
731 add_ldflags(){
732     append LDFLAGS $($ldflags_filter "$@")
733 }
734
735 add_ldexeflags(){
736     append LDEXEFLAGS $($ldflags_filter "$@")
737 }
738
739 add_stripflags(){
740     append STRIPFLAGS "$@"
741 }
742
743 add_extralibs(){
744     prepend extralibs $($ldflags_filter "$@")
745 }
746
747 add_host_cppflags(){
748     append host_cppflags "$@"
749 }
750
751 add_host_cflags(){
752     append host_cflags $($host_cflags_filter "$@")
753 }
754
755 add_host_ldflags(){
756     append host_ldflags $($host_ldflags_filter "$@")
757 }
758
759 add_compat(){
760     append compat_objs $1
761     shift
762     map 'add_cppflags -D$v' "$@"
763 }
764
765 check_cmd(){
766     log "$@"
767     "$@" >> $logfile 2>&1
768 }
769
770 cc_o(){
771     eval printf '%s\\n' $CC_O
772 }
773
774 cc_e(){
775     eval printf '%s\\n' $CC_E
776 }
777
778 check_cc(){
779     log check_cc "$@"
780     cat > $TMPC
781     log_file $TMPC
782     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
783 }
784
785 check_objcc(){
786     log check_objcc "$@"
787     cat > $TMPC
788     log_file $TMPC
789     check_cmd $objcc $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPC
790 }
791
792 check_cpp(){
793     log check_cpp "$@"
794     cat > $TMPC
795     log_file $TMPC
796     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
797 }
798
799 as_o(){
800     eval printf '%s\\n' $AS_O
801 }
802
803 check_as(){
804     log check_as "$@"
805     cat > $TMPS
806     log_file $TMPS
807     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
808 }
809
810 check_inline_asm(){
811     log check_inline_asm "$@"
812     name="$1"
813     code="$2"
814     shift 2
815     disable $name
816     check_cc "$@" <<EOF && enable $name
817 void foo(void){ __asm__ volatile($code); }
818 EOF
819 }
820
821 check_insn(){
822     log check_insn "$@"
823     check_inline_asm ${1}_inline "\"$2\""
824     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
825 }
826
827 check_yasm(){
828     log check_yasm "$@"
829     echo "$1" > $TMPS
830     log_file $TMPS
831     shift 1
832     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
833 }
834
835 ld_o(){
836     eval printf '%s\\n' $LD_O
837 }
838
839 check_ld(){
840     log check_ld "$@"
841     flags=$(filter_out '-l*' "$@")
842     libs=$(filter '-l*' "$@")
843     check_cc $($cflags_filter $flags) || return
844     flags=$($ldflags_filter $flags)
845     libs=$($ldflags_filter $libs)
846     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
847 }
848
849 print_include(){
850     hdr=$1
851     test "${hdr%.h}" = "${hdr}" &&
852         echo "#include $hdr"    ||
853         echo "#include <$hdr>"
854 }
855
856 check_code(){
857     log check_code "$@"
858     check=$1
859     headers=$2
860     code=$3
861     shift 3
862     {
863         for hdr in $headers; do
864             print_include $hdr
865         done
866         echo "int main(void) { $code; return 0; }"
867     } | check_$check "$@"
868 }
869
870 check_cppflags(){
871     log check_cppflags "$@"
872     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
873 int x;
874 EOF
875 }
876
877 test_cflags(){
878     log test_cflags "$@"
879     set -- $($cflags_filter "$@")
880     check_cc "$@" <<EOF
881 int x;
882 EOF
883 }
884
885 check_cflags(){
886     log check_cflags "$@"
887     test_cflags "$@" && add_cflags "$@"
888 }
889
890 test_objcflags(){
891     log test_objcflags "$@"
892     set -- $($objcflags_filter "$@")
893     check_objcc "$@" <<EOF
894 int x;
895 EOF
896 }
897
898 check_objcflags(){
899     log check_objcflags "$@"
900     test_objcflags "$@" && add_objcflags "$@"
901 }
902
903 test_ldflags(){
904     log test_ldflags "$@"
905     check_ld "$@" <<EOF
906 int main(void){ return 0; }
907 EOF
908 }
909
910 check_ldflags(){
911     log check_ldflags "$@"
912     test_ldflags "$@" && add_ldflags "$@"
913 }
914
915 test_stripflags(){
916     log test_stripflags "$@"
917     # call check_cc to get a fresh TMPO
918     check_cc <<EOF
919 int main(void) { return 0; }
920 EOF
921     check_cmd $strip $STRIPFLAGS "$@" $TMPO
922 }
923
924 check_stripflags(){
925     log check_stripflags "$@"
926     test_stripflags "$@" && add_stripflags "$@"
927 }
928
929 check_header(){
930     log check_header "$@"
931     header=$1
932     shift
933     disable_safe $header
934     check_cpp "$@" <<EOF && enable_safe $header
935 #include <$header>
936 int x;
937 EOF
938 }
939
940 check_func(){
941     log check_func "$@"
942     func=$1
943     shift
944     disable $func
945     check_ld "$@" <<EOF && enable $func
946 extern int $func();
947 int main(void){ $func(); }
948 EOF
949 }
950
951 check_mathfunc(){
952     log check_mathfunc "$@"
953     func=$1
954     narg=$2
955     shift 2
956     test $narg = 2 && args="f, g" || args="f"
957     disable $func
958     check_ld "$@" <<EOF && enable $func
959 #include <math.h>
960 float foo(float f, float g) { return $func($args); }
961 int main(void){ return 0; }
962 EOF
963 }
964
965 check_func_headers(){
966     log check_func_headers "$@"
967     headers=$1
968     funcs=$2
969     shift 2
970     {
971         for hdr in $headers; do
972             print_include $hdr
973         done
974         for func in $funcs; do
975             echo "long check_$func(void) { return (long) $func; }"
976         done
977         echo "int main(void) { return 0; }"
978     } | check_ld "$@" && enable $funcs && enable_safe $headers
979 }
980
981 check_cpp_condition(){
982     log check_cpp_condition "$@"
983     header=$1
984     condition=$2
985     shift 2
986     check_cpp "$@" <<EOF
987 #include <$header>
988 #if !($condition)
989 #error "unsatisfied condition: $condition"
990 #endif
991 EOF
992 }
993
994 test_cflags_cpp(){
995     log test_cflags_cpp "$@"
996     flags=$1
997     condition=$2
998     shift 2
999     set -- $($cflags_filter "$flags")
1000     check_cpp "$@" <<EOF
1001 #if !($condition)
1002 #error "unsatisfied condition: $condition"
1003 #endif
1004 EOF
1005 }
1006
1007 check_lib(){
1008     log check_lib "$@"
1009     headers="$1"
1010     funcs="$2"
1011     shift 2
1012     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1013 }
1014
1015 check_pkg_config(){
1016     log check_pkg_config "$@"
1017     pkg_version="$1"
1018     pkg="${1%% *}"
1019     headers="$2"
1020     funcs="$3"
1021     shift 3
1022     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1023     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1024     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1025     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1026         set_safe "${pkg}_cflags" $pkg_cflags   &&
1027         set_safe "${pkg}_libs"   $pkg_libs
1028 }
1029
1030 check_exec(){
1031     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1032 }
1033
1034 check_exec_crash(){
1035     log check_exec_crash "$@"
1036     code=$(cat)
1037
1038     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1039     # are safe but may not be available everywhere.  Thus we use
1040     # raise(SIGTERM) instead.  The check is run in a subshell so we
1041     # can redirect the "Terminated" message from the shell.  SIGBUS
1042     # is not defined by standard C so it is used conditionally.
1043
1044     (check_exec "$@") >> $logfile 2>&1 <<EOF
1045 #include <signal.h>
1046 static void sighandler(int sig){
1047     raise(SIGTERM);
1048 }
1049 int foo(void){
1050     $code
1051 }
1052 int (*func_ptr)(void) = foo;
1053 int main(void){
1054     signal(SIGILL, sighandler);
1055     signal(SIGFPE, sighandler);
1056     signal(SIGSEGV, sighandler);
1057 #ifdef SIGBUS
1058     signal(SIGBUS, sighandler);
1059 #endif
1060     return func_ptr();
1061 }
1062 EOF
1063 }
1064
1065 check_type(){
1066     log check_type "$@"
1067     headers=$1
1068     type=$2
1069     shift 2
1070     disable_safe "$type"
1071     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1072 }
1073
1074 check_struct(){
1075     log check_struct "$@"
1076     headers=$1
1077     struct=$2
1078     member=$3
1079     shift 3
1080     disable_safe "${struct}_${member}"
1081     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1082         enable_safe "${struct}_${member}"
1083 }
1084
1085 check_builtin(){
1086     log check_builtin "$@"
1087     name=$1
1088     headers=$2
1089     builtin=$3
1090     shift 3
1091     disable "$name"
1092     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1093 }
1094
1095 check_compile_assert(){
1096     log check_compile_assert "$@"
1097     name=$1
1098     headers=$2
1099     condition=$3
1100     shift 3
1101     disable "$name"
1102     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1103 }
1104
1105 require(){
1106     log require "$@"
1107     name_version="$1"
1108     headers="$2"
1109     func="$3"
1110     shift 3
1111     check_lib "$headers" $func "$@" || die "ERROR: $name_version not found"
1112 }
1113
1114 require_pkg_config(){
1115     log require_pkg_config "$@"
1116     pkg_version="$1"
1117     pkg="${1%% *}"
1118     check_pkg_config "$@" || die "ERROR: $pkg_version not found"
1119     add_cflags    $(get_safe "${pkg}_cflags")
1120     add_extralibs $(get_safe "${pkg}_libs")
1121 }
1122
1123 hostcc_e(){
1124     eval printf '%s\\n' $HOSTCC_E
1125 }
1126
1127 hostcc_o(){
1128     eval printf '%s\\n' $HOSTCC_O
1129 }
1130
1131 check_host_cc(){
1132     log check_host_cc "$@"
1133     cat > $TMPC
1134     log_file $TMPC
1135     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1136 }
1137
1138 check_host_cpp(){
1139     log check_host_cpp "$@"
1140     cat > $TMPC
1141     log_file $TMPC
1142     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1143 }
1144
1145 check_host_cppflags(){
1146     log check_host_cppflags "$@"
1147     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1148 int x;
1149 EOF
1150 }
1151
1152 check_host_cflags(){
1153     log check_host_cflags "$@"
1154     set -- $($host_cflags_filter "$@")
1155     check_host_cc "$@" <<EOF && append host_cflags "$@"
1156 int x;
1157 EOF
1158 }
1159
1160 check_host_cpp_condition(){
1161     log check_host_cpp_condition "$@"
1162     header=$1
1163     condition=$2
1164     shift 2
1165     check_host_cpp "$@" <<EOF
1166 #include <$header>
1167 #if !($condition)
1168 #error "unsatisfied condition: $condition"
1169 #endif
1170 EOF
1171 }
1172
1173 apply(){
1174     file=$1
1175     shift
1176     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1177 }
1178
1179 cp_if_changed(){
1180     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1181     mkdir -p "$(dirname $2)"
1182     cp -f "$1" "$2"
1183 }
1184
1185 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1186 # system-dependent things.
1187
1188 AVCODEC_COMPONENTS="
1189     bsfs
1190     decoders
1191     encoders
1192     hwaccels
1193     parsers
1194 "
1195
1196 AVDEVICE_COMPONENTS="
1197     indevs
1198     outdevs
1199 "
1200 AVFILTER_COMPONENTS="
1201     filters
1202 "
1203 AVFORMAT_COMPONENTS="
1204     demuxers
1205     muxers
1206     protocols
1207 "
1208
1209 AVRESAMPLE_COMPONENTS=""
1210 AVUTIL_COMPONENTS=""
1211
1212 COMPONENT_LIST="
1213     $AVCODEC_COMPONENTS
1214     $AVDEVICE_COMPONENTS
1215     $AVFILTER_COMPONENTS
1216     $AVFORMAT_COMPONENTS
1217     $AVRESAMPLE_COMPONENTS
1218     $AVUTIL_COMPONENTS
1219 "
1220
1221 EXAMPLE_LIST="
1222     decode_audio_example
1223     decode_video_example
1224     encode_audio_example
1225     encode_video_example
1226     filter_audio_example
1227     metadata_example
1228     output_example
1229     qsvdec_example
1230     transcode_aac_example
1231 "
1232
1233 HWACCEL_LIBRARY_NONFREE_LIST="
1234     cuda
1235     libnpp
1236 "
1237 HWACCEL_LIBRARY_LIST="
1238     $HWACCEL_LIBRARY_NONFREE_LIST
1239     d3d11va
1240     dxva2
1241     libmfx
1242     mmal
1243     nvenc
1244     omx
1245     vaapi
1246     vda
1247     vdpau
1248 "
1249
1250 EXTERNAL_LIBRARY_GPL_LIST="
1251     libcdio
1252     libx264
1253     libx265
1254     libxavs
1255     libxvid
1256 "
1257
1258 EXTERNAL_LIBRARY_NONFREE_LIST="
1259     libfaac
1260     libfdk_aac
1261     openssl
1262 "
1263
1264 EXTERNAL_LIBRARY_VERSION3_LIST="
1265     libopencore_amrnb
1266     libopencore_amrwb
1267     libvo_aacenc
1268     libvo_amrwbenc
1269 "
1270
1271 EXTERNAL_LIBRARY_LIST="
1272     $EXTERNAL_LIBRARY_GPL_LIST
1273     $EXTERNAL_LIBRARY_NONFREE_LIST
1274     $EXTERNAL_LIBRARY_VERSION3_LIST
1275     avisynth
1276     avxsynth
1277     bzlib
1278     frei0r
1279     gnutls
1280     libbs2b
1281     libdc1394
1282     libdcadec
1283     libfontconfig
1284     libfreetype
1285     libgsm
1286     libhdcd
1287     libilbc
1288     libkvazaar
1289     libmp3lame
1290     libopencv
1291     libopenh264
1292     libopenjpeg
1293     libopus
1294     libpulse
1295     librtmp
1296     libschroedinger
1297     libsnappy
1298     libspeex
1299     libtheora
1300     libtwolame
1301     libvorbis
1302     libvpx
1303     libwavpack
1304     libwebp
1305     libxcb
1306     libxcb_shm
1307     libxcb_xfixes
1308     zlib
1309 "
1310
1311 FEATURE_LIST="
1312     gray
1313     hardcoded_tables
1314     omx_rpi
1315     runtime_cpudetect
1316     safe_bitstream_reader
1317     shared
1318     small
1319     sram
1320     static
1321     swscale_alpha
1322 "
1323
1324 LIBRARY_LIST="
1325     avcodec
1326     avdevice
1327     avfilter
1328     avformat
1329     avresample
1330     avutil
1331     swscale
1332 "
1333
1334 LICENSE_LIST="
1335     gpl
1336     nonfree
1337     version3
1338 "
1339
1340 PROGRAM_LIST="
1341     avconv
1342     avplay
1343     avprobe
1344 "
1345
1346 SUBSYSTEM_LIST="
1347     dct
1348     doc
1349     error_resilience
1350     faan
1351     fft
1352     lsp
1353     lzo
1354     mdct
1355     network
1356     rdft
1357 "
1358
1359 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1360 CONFIG_LIST="
1361     $EXAMPLE_LIST
1362     $EXTERNAL_LIBRARY_LIST
1363     $HWACCEL_LIBRARY_LIST
1364     $FEATURE_LIST
1365     $LICENSE_LIST
1366     $LIBRARY_LIST
1367     $PROGRAM_LIST
1368     $SUBSYSTEM_LIST
1369     neon_clobber_test
1370     pic
1371     pod2man
1372     texi2html
1373     thumb
1374     valgrind_backtrace
1375     xmm_clobber_test
1376     $COMPONENT_LIST
1377 "
1378
1379 THREADS_LIST="
1380     pthreads
1381     w32threads
1382 "
1383
1384 ATOMICS_LIST="
1385     atomics_gcc
1386     atomics_suncc
1387     atomics_win32
1388 "
1389
1390 ARCH_LIST="
1391     aarch64
1392     alpha
1393     arm
1394     avr32
1395     avr32_ap
1396     avr32_uc
1397     bfin
1398     ia64
1399     m68k
1400     mips
1401     mips64
1402     parisc
1403     ppc
1404     ppc64
1405     s390
1406     sh4
1407     sparc
1408     sparc64
1409     tilegx
1410     tilepro
1411     tomi
1412     x86
1413     x86_32
1414     x86_64
1415 "
1416
1417 ARCH_EXT_LIST_ARM="
1418     armv5te
1419     armv6
1420     armv6t2
1421     armv8
1422     neon
1423     vfp
1424     vfpv3
1425 "
1426
1427 ARCH_EXT_LIST_X86_SIMD="
1428     amd3dnow
1429     amd3dnowext
1430     avx
1431     avx2
1432     fma3
1433     fma4
1434     mmx
1435     mmxext
1436     sse
1437     sse2
1438     sse3
1439     sse4
1440     sse42
1441     ssse3
1442     xop
1443 "
1444
1445 ARCH_EXT_LIST_PPC="
1446     altivec
1447     dcbzl
1448     ldbrx
1449     power8
1450     ppc4xx
1451     vsx
1452 "
1453
1454 ARCH_EXT_LIST_X86="
1455     $ARCH_EXT_LIST_X86_SIMD
1456     cpunop
1457     i686
1458 "
1459
1460 ARCH_EXT_LIST_MIPS="
1461     loongson
1462     mips32r1
1463     mips64r1
1464     mips32r2
1465     mips64r2
1466     mips32r6
1467     mips64r6
1468 "
1469
1470 ARCH_EXT_LIST="
1471     $ARCH_EXT_LIST_ARM
1472     $ARCH_EXT_LIST_MIPS
1473     $ARCH_EXT_LIST_PPC
1474     $ARCH_EXT_LIST_X86
1475     vis
1476 "
1477
1478 ARCH_FEATURES="
1479     aligned_stack
1480     fast_64bit
1481     fast_clz
1482     fast_cmov
1483     local_aligned_8
1484     local_aligned_16
1485     local_aligned_32
1486     simd_align_16
1487     simd_align_32
1488 "
1489
1490 BUILTIN_LIST="
1491     atomic_cas_ptr
1492     machine_rw_barrier
1493     MemoryBarrier
1494     mm_empty
1495     rdtsc
1496     sem_timedwait
1497     sync_val_compare_and_swap
1498 "
1499 HAVE_LIST_CMDLINE="
1500     inline_asm
1501     symver
1502     yasm
1503 "
1504
1505 HAVE_LIST_PUB="
1506     bigendian
1507     fast_unaligned
1508 "
1509
1510 HEADERS_LIST="
1511     AVFoundation_AVFoundation_h
1512     alsa_asoundlib_h
1513     altivec_h
1514     arpa_inet_h
1515     cdio_paranoia_h
1516     cdio_paranoia_paranoia_h
1517     dispatch_dispatch_h
1518     dev_bktr_ioctl_bt848_h
1519     dev_bktr_ioctl_meteor_h
1520     dev_ic_bt8xx_h
1521     dev_video_bktr_ioctl_bt848_h
1522     dev_video_meteor_ioctl_meteor_h
1523     direct_h
1524     dlfcn_h
1525     d3d11_h
1526     dxva_h
1527     gsm_h
1528     io_h
1529     mach_mach_time_h
1530     machine_ioctl_bt848_h
1531     machine_ioctl_meteor_h
1532     malloc_h
1533     poll_h
1534     sndio_h
1535     soundcard_h
1536     stdatomic_h
1537     sys_mman_h
1538     sys_param_h
1539     sys_resource_h
1540     sys_select_h
1541     sys_soundcard_h
1542     sys_time_h
1543     sys_un_h
1544     sys_videoio_h
1545     unistd_h
1546     valgrind_valgrind_h
1547     windows_h
1548     winsock2_h
1549 "
1550
1551 INTRINSICS_LIST="
1552     intrinsics_neon
1553 "
1554
1555 MATH_FUNCS="
1556     atanf
1557     atan2f
1558     cbrtf
1559     cosf
1560     exp2
1561     exp2f
1562     expf
1563     isinf
1564     isnan
1565     ldexpf
1566     llrint
1567     llrintf
1568     log2
1569     log2f
1570     log10f
1571     lrint
1572     lrintf
1573     powf
1574     rint
1575     round
1576     roundf
1577     sinf
1578     trunc
1579     truncf
1580 "
1581
1582 SYSTEM_FUNCS="
1583     aligned_malloc
1584     clock_gettime
1585     closesocket
1586     CommandLineToArgvW
1587     CoTaskMemFree
1588     CryptGenRandom
1589     dlopen
1590     fcntl
1591     flt_lim
1592     fork
1593     getaddrinfo
1594     gethrtime
1595     getopt
1596     GetProcessAffinityMask
1597     GetProcessMemoryInfo
1598     GetProcessTimes
1599     getrusage
1600     GetSystemTimeAsFileTime
1601     gettimeofday
1602     gmtime_r
1603     inet_aton
1604     isatty
1605     jack_port_get_latency_range
1606     LoadLibrary
1607     localtime_r
1608     mach_absolute_time
1609     MapViewOfFile
1610     memalign
1611     mkstemp
1612     mmap
1613     mprotect
1614     nanosleep
1615     posix_memalign
1616     sched_getaffinity
1617     SetConsoleTextAttribute
1618     setmode
1619     setrlimit
1620     Sleep
1621     strerror_r
1622     sysconf
1623     sysctl
1624     usleep
1625     VirtualAlloc
1626 "
1627
1628 TOOLCHAIN_FEATURES="
1629     as_dn_directive
1630     as_fpu_directive
1631     as_func
1632     as_object_arch
1633     asm_mod_q
1634     attribute_may_alias
1635     attribute_packed
1636     ebp_available
1637     ebx_available
1638     gnu_as
1639     ibm_asm
1640     inline_asm_labels
1641     pragma_deprecated
1642     symver_asm_label
1643     symver_gnu_asm
1644     vfp_args
1645     xform_asm
1646     xmm_clobbers
1647 "
1648
1649 TYPES_LIST="
1650     CONDITION_VARIABLE_Ptr
1651     socklen_t
1652     struct_addrinfo
1653     struct_group_source_req
1654     struct_ip_mreq_source
1655     struct_ipv6_mreq
1656     struct_pollfd
1657     struct_rusage_ru_maxrss
1658     struct_sockaddr_in6
1659     struct_sockaddr_sa_len
1660     struct_sockaddr_storage
1661     struct_v4l2_frmivalenum_discrete
1662 "
1663
1664 HAVE_LIST="
1665     $ARCH_EXT_LIST
1666     $(add_suffix _external $ARCH_EXT_LIST)
1667     $(add_suffix _inline   $ARCH_EXT_LIST)
1668     $ARCH_FEATURES
1669     $BUILTIN_LIST
1670     $HAVE_LIST_CMDLINE
1671     $HAVE_LIST_PUB
1672     $HEADERS_LIST
1673     $INTRINSICS_LIST
1674     $MATH_FUNCS
1675     $SYSTEM_FUNCS
1676     $THREADS_LIST
1677     $TOOLCHAIN_FEATURES
1678     $TYPES_LIST
1679     dos_paths
1680     dxva2_lib
1681     libc_msvcrt
1682     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1683     sdl
1684     section_data_rel_ro
1685     threads
1686     vaapi_drm
1687     vaapi_x11
1688     vdpau_x11
1689 "
1690
1691 # options emitted with CONFIG_ prefix but not available on the command line
1692 CONFIG_EXTRA="
1693     aandcttables
1694     ac3dsp
1695     audio_frame_queue
1696     audiodsp
1697     blockdsp
1698     bswapdsp
1699     cabac
1700     dirac_parse
1701     dvprofile
1702     faandct
1703     faanidct
1704     fdctdsp
1705     flacdsp
1706     fmtconvert
1707     g722dsp
1708     gmp
1709     golomb
1710     gplv3
1711     h263dsp
1712     h264chroma
1713     h264dsp
1714     h264parse
1715     h264pred
1716     h264qpel
1717     hevc_ps
1718     hpeldsp
1719     huffman
1720     huffyuvdsp
1721     huffyuvencdsp
1722     idctdsp
1723     iirfilter
1724     imdct15
1725     intrax8
1726     iso_media
1727     ividsp
1728     jpegtables
1729     libx262
1730     lgplv3
1731     lpc
1732     lzf
1733     me_cmp
1734     mpeg_er
1735     mpegaudio
1736     mpegaudiodsp
1737     mpegaudioheader
1738     mpegvideo
1739     mpegvideoenc
1740     mss34dsp
1741     pixblockdsp
1742     qpeldsp
1743     qsv
1744     qsvdec
1745     qsvenc
1746     rangecoder
1747     riffdec
1748     riffenc
1749     rtpdec
1750     rtpenc_chain
1751     rv34dsp
1752     sinewin
1753     snappy
1754     srtp
1755     startcode
1756     texturedsp
1757     texturedspenc
1758     tpeldsp
1759     vaapi_encode
1760     vc1dsp
1761     videodsp
1762     vp3dsp
1763     vp56dsp
1764     vp8dsp
1765     wma_freqs
1766     wmv2dsp
1767 "
1768
1769 CMDLINE_SELECT="
1770     $ARCH_EXT_LIST
1771     $CONFIG_LIST
1772     $HAVE_LIST_CMDLINE
1773     $THREADS_LIST
1774     asm
1775     cross_compile
1776     debug
1777     extra_warnings
1778     logging
1779     lto
1780     optimizations
1781     rpath
1782 "
1783
1784 PATHS_LIST="
1785     bindir
1786     datadir
1787     docdir
1788     incdir
1789     libdir
1790     mandir
1791     prefix
1792     shlibdir
1793 "
1794
1795 CMDLINE_SET="
1796     $PATHS_LIST
1797     ar
1798     arch
1799     as
1800     cc
1801     objcc
1802     cpu
1803     cross_prefix
1804     custom_allocator
1805     dep_cc
1806     env
1807     extra_version
1808     host_cc
1809     host_cflags
1810     host_ld
1811     host_ldflags
1812     host_libs
1813     host_os
1814     ld
1815     logfile
1816     malloc_prefix
1817     nm
1818     optflags
1819     pkg_config
1820     pkg_config_flags
1821     random_seed
1822     samples
1823     sysinclude
1824     sysroot
1825     target_exec
1826     target_os
1827     target_path
1828     target_samples
1829     toolchain
1830 "
1831
1832 CMDLINE_APPEND="
1833     extra_cflags
1834     extra_objcflags
1835     host_cppflags
1836 "
1837
1838 # code dependency declarations
1839
1840 # architecture extensions
1841
1842 armv5te_deps="arm"
1843 armv6_deps="arm"
1844 armv6t2_deps="arm"
1845 armv8_deps="aarch64"
1846 neon_deps_any="aarch64 arm"
1847 intrinsics_neon_deps="neon"
1848 vfp_deps_any="aarch64 arm"
1849 vfpv3_deps="vfp"
1850
1851 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1852
1853 altivec_deps="ppc"
1854 ppc4xx_deps="ppc"
1855 vsx_deps="altivec"
1856 power8_deps="vsx"
1857
1858 cpunop_deps="i686"
1859 x86_64_select="i686"
1860 x86_64_suggest="fast_cmov"
1861
1862 amd3dnow_deps="mmx"
1863 amd3dnowext_deps="amd3dnow"
1864 i686_deps="x86"
1865 mmx_deps="x86"
1866 mmxext_deps="mmx"
1867 sse_deps="mmxext"
1868 sse2_deps="sse"
1869 sse3_deps="sse2"
1870 ssse3_deps="sse3"
1871 sse4_deps="ssse3"
1872 sse42_deps="sse4"
1873 avx_deps="sse42"
1874 xop_deps="avx"
1875 fma3_deps="avx"
1876 fma4_deps="avx"
1877 avx2_deps="avx"
1878
1879 mmx_external_deps="yasm"
1880 mmx_inline_deps="inline_asm"
1881 mmx_suggest="mmx_external mmx_inline"
1882
1883 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1884     eval dep=\$${ext}_deps
1885     eval ${ext}_external_deps='"${dep}_external"'
1886     eval ${ext}_inline_deps='"${dep}_inline"'
1887     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1888 done
1889
1890 aligned_stack_if_any="aarch64 ppc x86"
1891 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1892 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1893 fast_unaligned_if_any="aarch64 ppc x86"
1894 simd_align_16_if_any="altivec neon sse"
1895 simd_align_32_if_any="avx"
1896
1897 # system capabilities
1898 symver_if_any="symver_asm_label symver_gnu_asm"
1899 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
1900
1901 # threading support
1902 atomics_gcc_if="sync_val_compare_and_swap"
1903 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1904 atomics_win32_if="MemoryBarrier"
1905 atomics_native_if_any="$ATOMICS_LIST"
1906 w32threads_deps="atomics_native"
1907 threads_if_any="$THREADS_LIST"
1908
1909 # subsystems
1910 dct_select="rdft"
1911 dirac_parse_select="golomb"
1912 error_resilience_select="me_cmp"
1913 faandct_deps="faan fdctdsp"
1914 faanidct_deps="faan idctdsp"
1915 h264dsp_select="startcode"
1916 hevc_ps_select="golomb"
1917 intrax8_select="blockdsp idctdsp"
1918 mdct_select="fft"
1919 rdft_select="fft"
1920 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1921 mpeg_er_select="error_resilience"
1922 mpegaudio_select="mpegaudiodsp mpegaudioheader"
1923 mpegaudiodsp_select="dct"
1924 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1925 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1926 vc1dsp_select="h264chroma qpeldsp startcode"
1927
1928 # decoders / encoders
1929 aac_decoder_select="imdct15 mdct sinewin"
1930 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1931 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1932 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1933 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1934 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1935 adpcm_g722_decoder_select="g722dsp"
1936 adpcm_g722_encoder_select="g722dsp"
1937 aic_decoder_select="golomb idctdsp"
1938 alac_encoder_select="lpc"
1939 als_decoder_select="bswapdsp"
1940 amrnb_decoder_select="lsp"
1941 amrwb_decoder_select="lsp"
1942 amv_decoder_select="sp5x_decoder"
1943 ape_decoder_select="bswapdsp"
1944 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1945 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1946 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1947 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1948 atrac1_decoder_select="mdct sinewin"
1949 atrac3_decoder_select="mdct"
1950 atrac3p_decoder_select="mdct sinewin"
1951 bink_decoder_select="blockdsp hpeldsp"
1952 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1953 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1954 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1955 cllc_decoder_select="bswapdsp"
1956 comfortnoise_encoder_select="lpc"
1957 cook_decoder_select="audiodsp mdct sinewin"
1958 cscd_decoder_select="lzo"
1959 cscd_decoder_suggest="zlib"
1960 dca_decoder_select="fmtconvert mdct"
1961 dds_decoder_select="texturedsp"
1962 dnxhd_decoder_select="blockdsp idctdsp"
1963 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1964 dvvideo_decoder_select="dvprofile idctdsp"
1965 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1966 dxa_decoder_deps="zlib"
1967 dxv_decoder_select="lzf texturedsp"
1968 eac3_decoder_select="ac3_decoder"
1969 eac3_encoder_select="ac3_encoder"
1970 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1971 eatgq_decoder_select="aandcttables idctdsp"
1972 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
1973 exr_decoder_deps="zlib"
1974 ffv1_decoder_select="golomb rangecoder"
1975 ffv1_encoder_select="rangecoder"
1976 ffvhuff_decoder_select="huffyuv_decoder"
1977 ffvhuff_encoder_select="huffyuv_encoder"
1978 fic_decoder_select="golomb"
1979 flac_decoder_select="flacdsp golomb"
1980 flac_encoder_select="bswapdsp flacdsp golomb lpc"
1981 flashsv_decoder_deps="zlib"
1982 flashsv_encoder_deps="zlib"
1983 flashsv2_decoder_deps="zlib"
1984 flv_decoder_select="h263_decoder"
1985 flv_encoder_select="h263_encoder"
1986 fourxm_decoder_select="blockdsp bswapdsp"
1987 fraps_decoder_select="bswapdsp huffman"
1988 g2m_decoder_deps="zlib"
1989 g2m_decoder_select="blockdsp idctdsp jpegtables"
1990 h261_decoder_select="mpeg_er mpegvideo"
1991 h261_encoder_select="aandcttables mpegvideoenc"
1992 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1993 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1994 h263i_decoder_select="h263_decoder"
1995 h263p_encoder_select="h263_encoder"
1996 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
1997 h264_decoder_suggest="error_resilience"
1998 hap_decoder_select="snappy texturedsp"
1999 hap_encoder_deps="libsnappy"
2000 hap_encoder_select="texturedspenc"
2001 hevc_decoder_select="bswapdsp cabac hevc_ps videodsp"
2002 huffyuv_decoder_select="bswapdsp huffyuvdsp"
2003 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
2004 iac_decoder_select="imc_decoder"
2005 imc_decoder_select="bswapdsp fft mdct sinewin"
2006 indeo3_decoder_select="hpeldsp"
2007 indeo4_decoder_select="ividsp"
2008 indeo5_decoder_select="ividsp"
2009 interplay_video_decoder_select="hpeldsp"
2010 jpegls_decoder_select="golomb mjpeg_decoder"
2011 jpegls_encoder_select="golomb"
2012 jv_decoder_select="blockdsp"
2013 lagarith_decoder_select="huffyuvdsp"
2014 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2015 loco_decoder_select="golomb"
2016 magicyuv_decoder_select="huffyuvdsp"
2017 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2018 metasound_decoder_select="lsp mdct sinewin"
2019 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2020 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2021 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2022 mjpegb_decoder_select="mjpeg_decoder"
2023 mlp_decoder_select="mlp_parser"
2024 motionpixels_decoder_select="bswapdsp"
2025 mp1_decoder_select="mpegaudio"
2026 mp1float_decoder_select="mpegaudio"
2027 mp2_decoder_select="mpegaudio"
2028 mp2float_decoder_select="mpegaudio"
2029 mp3_decoder_select="mpegaudio"
2030 mp3adu_decoder_select="mpegaudio"
2031 mp3adufloat_decoder_select="mpegaudio"
2032 mp3float_decoder_select="mpegaudio"
2033 mp3on4_decoder_select="mpegaudio"
2034 mp3on4float_decoder_select="mpegaudio"
2035 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2036 mpc8_decoder_select="mpegaudiodsp"
2037 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2038 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2039 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2040 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2041 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2042 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2043 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2044 mpeg4_encoder_select="h263_encoder"
2045 msa1_decoder_select="mss34dsp"
2046 msmpeg4v1_decoder_select="h263_decoder"
2047 msmpeg4v2_decoder_select="h263_decoder"
2048 msmpeg4v2_encoder_select="h263_encoder"
2049 msmpeg4v3_decoder_select="h263_decoder"
2050 msmpeg4v3_encoder_select="h263_encoder"
2051 mss2_decoder_select="error_resilience mpeg_er mpegvideo qpeldsp vc1_decoder"
2052 mts2_decoder_select="mss34dsp"
2053 mxpeg_decoder_select="mjpeg_decoder"
2054 nellymoser_decoder_select="mdct sinewin"
2055 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2056 nuv_decoder_select="idctdsp lzo"
2057 on2avc_decoder_select="mdct"
2058 opus_decoder_deps="avresample"
2059 opus_decoder_select="imdct15"
2060 png_decoder_deps="zlib"
2061 png_encoder_deps="zlib"
2062 png_encoder_select="huffyuvencdsp"
2063 prores_decoder_select="idctdsp"
2064 prores_encoder_select="fdctdsp"
2065 qcelp_decoder_select="lsp"
2066 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2067 ra_144_encoder_select="audio_frame_queue lpc"
2068 ralf_decoder_select="golomb"
2069 rscc_decoder_deps="zlib"
2070 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2071 rv10_encoder_select="h263_encoder"
2072 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2073 rv20_encoder_select="h263_encoder"
2074 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2075 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2076 screenpresso_decoder_deps="zlib"
2077 shorten_decoder_select="golomb"
2078 sipr_decoder_select="lsp"
2079 sp5x_decoder_select="mjpeg_decoder"
2080 svq1_decoder_select="hpeldsp"
2081 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2082 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2083 svq3_decoder_suggest="zlib"
2084 tak_decoder_select="audiodsp"
2085 tdsc_decoder_deps="zlib"
2086 tdsc_decoder_select="mjpeg_decoder"
2087 theora_decoder_select="vp3_decoder"
2088 thp_decoder_select="mjpeg_decoder"
2089 tiff_decoder_suggest="zlib"
2090 tiff_encoder_suggest="zlib"
2091 truehd_decoder_select="mlp_decoder"
2092 truemotion2_decoder_select="bswapdsp"
2093 truespeech_decoder_select="bswapdsp"
2094 tscc_decoder_deps="zlib"
2095 txd_decoder_select="texturedsp"
2096 twinvq_decoder_select="mdct lsp sinewin"
2097 utvideo_decoder_select="bswapdsp"
2098 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2099 vble_decoder_select="huffyuvdsp"
2100 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2101 vc1image_decoder_select="vc1_decoder"
2102 vorbis_decoder_select="mdct"
2103 vorbis_encoder_select="mdct"
2104 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2105 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2106 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2107 vp6a_decoder_select="vp6_decoder"
2108 vp6f_decoder_select="vp6_decoder"
2109 vp7_decoder_select="h264pred videodsp vp8dsp"
2110 vp8_decoder_select="h264pred videodsp vp8dsp"
2111 vp9_decoder_select="videodsp"
2112 webp_decoder_select="vp8_decoder"
2113 wmapro_decoder_select="mdct sinewin wma_freqs"
2114 wmav1_decoder_select="mdct sinewin wma_freqs"
2115 wmav1_encoder_select="mdct sinewin wma_freqs"
2116 wmav2_decoder_select="mdct sinewin wma_freqs"
2117 wmav2_encoder_select="mdct sinewin wma_freqs"
2118 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2119 wmv1_decoder_select="h263_decoder"
2120 wmv1_encoder_select="h263_encoder"
2121 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2122 wmv2_encoder_select="h263_encoder wmv2dsp"
2123 wmv3_decoder_select="vc1_decoder"
2124 wmv3image_decoder_select="wmv3_decoder"
2125 zerocodec_decoder_deps="zlib"
2126 zlib_decoder_deps="zlib"
2127 zlib_encoder_deps="zlib"
2128 zmbv_decoder_deps="zlib"
2129 zmbv_encoder_deps="zlib"
2130
2131 # hardware accelerators
2132 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2133 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2134 vaapi_deps="va_va_h"
2135 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2136 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2137 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2138
2139 h263_vaapi_hwaccel_deps="vaapi"
2140 h263_vaapi_hwaccel_select="h263_decoder"
2141 h264_d3d11va_hwaccel_deps="d3d11va"
2142 h264_d3d11va_hwaccel_select="h264_decoder"
2143 h264_dxva2_hwaccel_deps="dxva2"
2144 h264_dxva2_hwaccel_select="h264_decoder"
2145 h264_mmal_hwaccel_deps="mmal"
2146 h264_qsv_hwaccel_deps="libmfx"
2147 h264_vaapi_hwaccel_deps="vaapi"
2148 h264_vaapi_hwaccel_select="h264_decoder"
2149 h264_vda_hwaccel_deps="vda"
2150 h264_vda_hwaccel_select="h264_decoder"
2151 h264_vda_old_hwaccel_deps="vda"
2152 h264_vda_old_hwaccel_select="h264_decoder"
2153 h264_vdpau_hwaccel_deps="vdpau"
2154 h264_vdpau_hwaccel_select="h264_decoder"
2155 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2156 hevc_d3d11va_hwaccel_select="hevc_decoder"
2157 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2158 hevc_dxva2_hwaccel_select="hevc_decoder"
2159 hevc_qsv_hwaccel_deps="libmfx"
2160 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2161 hevc_vdpau_hwaccel_select="hevc_decoder"
2162 mpeg1_vdpau_hwaccel_deps="vdpau"
2163 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2164 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2165 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2166 mpeg2_dxva2_hwaccel_deps="dxva2"
2167 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2168 mpeg2_mmal_hwaccel_deps="mmal"
2169 mpeg2_qsv_hwaccel_deps="libmfx"
2170 mpeg2_vaapi_hwaccel_deps="vaapi"
2171 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2172 mpeg2_vdpau_hwaccel_deps="vdpau"
2173 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2174 mpeg4_vaapi_hwaccel_deps="vaapi"
2175 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2176 mpeg4_vdpau_hwaccel_deps="vdpau"
2177 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2178 vc1_d3d11va_hwaccel_deps="d3d11va"
2179 vc1_d3d11va_hwaccel_select="vc1_decoder"
2180 vc1_dxva2_hwaccel_deps="dxva2"
2181 vc1_dxva2_hwaccel_select="vc1_decoder"
2182 vc1_mmal_hwaccel_deps="mmal"
2183 vc1_qsv_hwaccel_deps="libmfx"
2184 vc1_vaapi_hwaccel_deps="vaapi"
2185 vc1_vaapi_hwaccel_select="vc1_decoder"
2186 vc1_vdpau_hwaccel_deps="vdpau"
2187 vc1_vdpau_hwaccel_select="vc1_decoder"
2188 vp8_qsv_hwaccel_deps="libmfx"
2189 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2190 vp8_vaapi_hwaccel_select="vp8_decoder"
2191 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2192 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2193 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2194 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2195
2196 # hardware-accelerated codecs
2197 nvenc_deps_any="dlopen LoadLibrary"
2198 nvenc_extralibs='$ldl'
2199 omx_deps="dlopen pthreads"
2200 omx_extralibs='$ldl'
2201 omx_rpi_select="omx"
2202 qsvdec_select="qsv"
2203 qsvenc_select="qsv"
2204 vaapi_encode_deps="vaapi"
2205
2206 hwupload_cuda_filter_deps="cuda"
2207 scale_npp_filter_deps="cuda libnpp"
2208
2209 h264_mmal_decoder_deps="mmal"
2210 h264_nvenc_encoder_deps="nvenc"
2211 h264_omx_encoder_deps="omx"
2212 h264_qsv_decoder_deps="libmfx"
2213 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2214 h264_qsv_encoder_deps="libmfx"
2215 h264_qsv_encoder_select="qsvenc"
2216 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2217 h264_vaapi_encoder_select="vaapi_encode golomb"
2218 hevc_nvenc_encoder_deps="nvenc"
2219 hevc_qsv_decoder_deps="libmfx"
2220 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2221 hevc_qsv_encoder_deps="libmfx"
2222 hevc_qsv_encoder_select="hevc_ps qsvenc"
2223 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2224 hevc_vaapi_encoder_select="vaapi_encode golomb"
2225 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2226 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2227 mpeg2_mmal_decoder_deps="mmal"
2228 mpeg2_qsv_decoder_deps="libmfx"
2229 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2230 mpeg2_qsv_encoder_deps="libmfx"
2231 mpeg2_qsv_encoder_select="qsvenc"
2232 mpeg4_omx_encoder_deps="omx"
2233 vc1_mmal_decoder_deps="mmal"
2234 vc1_qsv_decoder_deps="libmfx"
2235 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2236 vp8_qsv_decoder_deps="libmfx"
2237 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2238
2239 nvenc_h264_encoder_select="h264_nvenc_encoder"
2240 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2241
2242 # parsers
2243 h264_parser_select="golomb h264dsp h264parse"
2244 hevc_parser_select="hevc_ps"
2245 mpegaudio_parser_select="mpegaudioheader"
2246 mpegvideo_parser_select="mpegvideo"
2247 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2248 vc1_parser_select="vc1dsp"
2249
2250 # bitstream_filters
2251 mjpeg2jpeg_bsf_select="jpegtables"
2252
2253 # external libraries
2254 avisynth_deps="LoadLibrary"
2255 avxsynth_deps="dlopen"
2256 avisynth_demuxer_deps_any="avisynth avxsynth"
2257 avisynth_demuxer_select="riffdec"
2258 libdcadec_decoder_deps="libdcadec"
2259 libfaac_encoder_deps="libfaac"
2260 libfaac_encoder_select="audio_frame_queue"
2261 libfdk_aac_decoder_deps="libfdk_aac"
2262 libfdk_aac_encoder_deps="libfdk_aac"
2263 libfdk_aac_encoder_select="audio_frame_queue"
2264 libgsm_decoder_deps="libgsm"
2265 libgsm_encoder_deps="libgsm"
2266 libgsm_ms_decoder_deps="libgsm"
2267 libgsm_ms_encoder_deps="libgsm"
2268 libilbc_decoder_deps="libilbc"
2269 libilbc_encoder_deps="libilbc"
2270 libkvazaar_encoder_deps="libkvazaar"
2271 libmp3lame_encoder_deps="libmp3lame"
2272 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2273 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2274 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2275 libopencore_amrnb_encoder_select="audio_frame_queue"
2276 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2277 libopenh264_decoder_deps="libopenh264"
2278 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2279 libopenh264_encoder_deps="libopenh264"
2280 libopenjpeg_decoder_deps="libopenjpeg"
2281 libopenjpeg_encoder_deps="libopenjpeg"
2282 libopus_decoder_deps="libopus"
2283 libopus_encoder_deps="libopus"
2284 libopus_encoder_select="audio_frame_queue"
2285 libschroedinger_decoder_deps="libschroedinger"
2286 libschroedinger_encoder_deps="libschroedinger"
2287 libspeex_decoder_deps="libspeex"
2288 libspeex_encoder_deps="libspeex"
2289 libspeex_encoder_select="audio_frame_queue"
2290 libtheora_encoder_deps="libtheora"
2291 libtwolame_encoder_deps="libtwolame"
2292 libvo_aacenc_encoder_deps="libvo_aacenc"
2293 libvo_aacenc_encoder_select="audio_frame_queue"
2294 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2295 libvorbis_encoder_deps="libvorbis"
2296 libvorbis_encoder_select="audio_frame_queue"
2297 libvpx_vp8_decoder_deps="libvpx"
2298 libvpx_vp8_encoder_deps="libvpx"
2299 libvpx_vp9_decoder_deps="libvpx"
2300 libvpx_vp9_encoder_deps="libvpx"
2301 libwavpack_encoder_deps="libwavpack"
2302 libwavpack_encoder_select="audio_frame_queue"
2303 libwebp_encoder_deps="libwebp"
2304 libx262_encoder_deps="libx262"
2305 libx264_encoder_deps="libx264"
2306 libx265_encoder_deps="libx265"
2307 libxavs_encoder_deps="libxavs"
2308 libxvid_encoder_deps="libxvid mkstemp"
2309
2310 # demuxers / muxers
2311 ac3_demuxer_select="ac3_parser"
2312 asf_demuxer_select="riffdec"
2313 asf_muxer_select="riffenc"
2314 asf_stream_muxer_select="asf_muxer"
2315 avi_demuxer_select="iso_media riffdec"
2316 avi_muxer_select="riffenc"
2317 caf_demuxer_select="iso_media riffdec"
2318 dash_muxer_select="mp4_muxer"
2319 dirac_demuxer_select="dirac_parser"
2320 dv_demuxer_select="dvprofile"
2321 dv_muxer_select="dvprofile"
2322 dxa_demuxer_select="riffdec"
2323 eac3_demuxer_select="ac3_parser"
2324 f4v_muxer_select="mov_muxer"
2325 flac_demuxer_select="flac_parser"
2326 hds_muxer_select="flv_muxer"
2327 hls_muxer_select="mpegts_muxer"
2328 ipod_muxer_select="mov_muxer"
2329 ismv_muxer_select="mov_muxer"
2330 matroska_audio_muxer_select="matroska_muxer"
2331 matroska_demuxer_select="iso_media riffdec"
2332 matroska_demuxer_suggest="bzlib lzo zlib"
2333 matroska_muxer_select="iso_media riffenc"
2334 mmf_muxer_select="riffenc"
2335 mov_demuxer_select="iso_media riffdec"
2336 mov_demuxer_suggest="zlib"
2337 mov_muxer_select="iso_media riffenc rtpenc_chain"
2338 mp3_demuxer_select="mpegaudio_parser"
2339 mp3_muxer_select="mpegaudioheader"
2340 mp4_muxer_select="mov_muxer"
2341 mpegts_demuxer_select="iso_media"
2342 mpegts_muxer_select="adts_muxer latm_muxer"
2343 mpegtsraw_demuxer_select="mpegts_demuxer"
2344 mxf_d10_muxer_select="mxf_muxer"
2345 nut_muxer_select="riffenc"
2346 nuv_demuxer_select="riffdec"
2347 oga_muxer_select="ogg_muxer"
2348 ogg_demuxer_select="dirac_parse"
2349 opus_muxer_select="ogg_muxer"
2350 psp_muxer_select="mov_muxer"
2351 rtp_demuxer_select="sdp_demuxer"
2352 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2353 rtsp_demuxer_select="http_protocol rtpdec"
2354 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2355 sap_demuxer_select="sdp_demuxer"
2356 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2357 sdp_demuxer_select="rtpdec"
2358 smoothstreaming_muxer_select="ismv_muxer"
2359 spdif_muxer_select="aac_parser"
2360 spx_muxer_select="ogg_muxer"
2361 swf_demuxer_suggest="zlib"
2362 tak_demuxer_select="tak_parser"
2363 tg2_muxer_select="mov_muxer"
2364 tgp_muxer_select="mov_muxer"
2365 w64_demuxer_select="wav_demuxer"
2366 wav_demuxer_select="riffdec"
2367 wav_muxer_select="riffenc"
2368 webm_muxer_select="iso_media riffenc"
2369 webm_muxer_suggest="libopus_encoder libvorbis_encoder libvpx_vp8_encoder libvpx_vp9_encoder"
2370 wtv_demuxer_select="mpegts_demuxer riffdec"
2371 xmv_demuxer_select="riffdec"
2372 xwma_demuxer_select="riffdec"
2373
2374 # indevs / outdevs
2375 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2376 alsa_outdev_deps="alsa_asoundlib_h"
2377 avfoundation_indev_deps="AVFoundation_AVFoundation_h objc_arc pthreads"
2378 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2379 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2380 dv1394_indev_deps="dv1394"
2381 dv1394_indev_select="dv_demuxer"
2382 fbdev_indev_deps="linux_fb_h"
2383 jack_indev_deps="jack_jack_h"
2384 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2385 libcdio_indev_deps="libcdio"
2386 libdc1394_indev_deps="libdc1394"
2387 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2388 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2389 pulse_indev_deps="libpulse"
2390 sndio_indev_deps="sndio_h"
2391 sndio_outdev_deps="sndio_h"
2392 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2393 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2394 vfwcap_indev_extralibs="-lavicap32"
2395 xcbgrab_indev_deps="libxcb"
2396
2397 # protocols
2398 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2399 ffrtmpcrypt_protocol_deps_any="gmp openssl"
2400 ffrtmpcrypt_protocol_select="tcp_protocol"
2401 ffrtmphttp_protocol_deps="!librtmp_protocol"
2402 ffrtmphttp_protocol_select="http_protocol"
2403 gopher_protocol_select="network"
2404 http_protocol_select="tcp_protocol"
2405 httpproxy_protocol_select="tcp_protocol"
2406 https_protocol_select="tls_protocol"
2407 icecast_protocol_select="http_protocol"
2408 librtmp_protocol_deps="librtmp"
2409 librtmpe_protocol_deps="librtmp"
2410 librtmps_protocol_deps="librtmp"
2411 librtmpt_protocol_deps="librtmp"
2412 librtmpte_protocol_deps="librtmp"
2413 mmsh_protocol_select="http_protocol"
2414 mmst_protocol_select="network"
2415 rtmp_protocol_deps="!librtmp_protocol"
2416 rtmp_protocol_select="tcp_protocol"
2417 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2418 rtmps_protocol_deps="!librtmp_protocol"
2419 rtmps_protocol_select="tls_protocol"
2420 rtmpt_protocol_select="ffrtmphttp_protocol"
2421 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2422 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2423 rtp_protocol_select="udp_protocol"
2424 sctp_protocol_deps="struct_sctp_event_subscribe"
2425 sctp_protocol_select="network"
2426 srtp_protocol_select="rtp_protocol srtp"
2427 tcp_protocol_select="network"
2428 tls_gnutls_protocol_deps="gnutls"
2429 tls_gnutls_protocol_select="tcp_protocol"
2430 tls_openssl_protocol_deps="openssl !tls_gnutls_protocol"
2431 tls_openssl_protocol_select="tcp_protocol"
2432 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2433 udp_protocol_select="network"
2434 unix_protocol_deps="sys_un_h"
2435 unix_protocol_select="network"
2436
2437 # filters
2438 asyncts_filter_deps="avresample"
2439 blackframe_filter_deps="gpl"
2440 boxblur_filter_deps="gpl"
2441 bs2b_filter_deps="libbs2b"
2442 cropdetect_filter_deps="gpl"
2443 deinterlace_qsv_filter_deps="libmfx"
2444 delogo_filter_deps="gpl"
2445 drawtext_filter_deps="libfreetype"
2446 frei0r_filter_deps="frei0r dlopen"
2447 frei0r_filter_extralibs='$ldl'
2448 frei0r_src_filter_deps="frei0r dlopen"
2449 frei0r_src_filter_extralibs='$ldl'
2450 hdcd_filter_deps="libhdcd"
2451 hqdn3d_filter_deps="gpl"
2452 interlace_filter_deps="gpl"
2453 movie_filter_deps="avcodec avformat"
2454 ocv_filter_deps="libopencv"
2455 resample_filter_deps="avresample"
2456 scale_filter_deps="swscale"
2457 scale_qsv_filter_deps="libmfx"
2458 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2459
2460 # examples
2461 decode_audio_example_deps="avcodec avutil"
2462 decode_video_example_deps="avcodec avutil"
2463 encode_audio_example_deps="avcodec avutil"
2464 encode_video_example_deps="avcodec avutil"
2465 filter_audio_example_deps="avfilter avutil"
2466 metadata_example_deps="avformat avutil"
2467 output_example_deps="avcodec avformat avresample avutil swscale"
2468 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
2469 transcode_aac_example_deps="avcodec avformat avresample"
2470
2471 # libraries, in linking order
2472 avcodec_deps="avutil"
2473 avdevice_deps="avformat avcodec avutil"
2474 avfilter_deps="avutil"
2475 avformat_deps="avcodec avutil"
2476 avresample_deps="avutil"
2477 swscale_deps="avutil"
2478
2479 # programs
2480 avconv_deps="avcodec avfilter avformat avresample swscale"
2481 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2482                fps_filter null_filter resample_filter scale_filter
2483                trim_filter"
2484 avplay_deps="avcodec avfilter avformat avresample sdl"
2485 avplay_libs='$sdl_libs'
2486 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2487 avprobe_deps="avcodec avformat"
2488
2489 # documentation
2490 pod2man_deps="doc"
2491 texi2html_deps="doc"
2492
2493 # default parameters
2494
2495 logfile="config.log"
2496
2497 # installation paths
2498 prefix_default="/usr/local"
2499 bindir_default='${prefix}/bin'
2500 datadir_default='${prefix}/share/avconv'
2501 docdir_default='${prefix}/share/doc/libav'
2502 incdir_default='${prefix}/include'
2503 libdir_default='${prefix}/lib'
2504 mandir_default='${prefix}/share/man'
2505 shlibdir_default="$libdir_default"
2506
2507 # toolchain
2508 ar_default="ar"
2509 cc_default="gcc"
2510 host_cc_default="gcc"
2511 ln_s="ln -s -f"
2512 nm_default="nm -g"
2513 objformat="elf"
2514 pkg_config_default=pkg-config
2515 ranlib="ranlib"
2516 strip="strip"
2517 version_script='--version-script'
2518 yasmexe="yasm"
2519
2520 # machine
2521 arch_default=$(uname -m)
2522 cpu="generic"
2523 intrinsics="none"
2524
2525 # OS
2526 target_os_default=$(tolower $(uname -s))
2527 host_os=$target_os_default
2528
2529 # configurable options
2530 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2531
2532 enable asm
2533 enable debug
2534 enable doc
2535 enable faan faandct faanidct
2536 enable optimizations
2537 enable safe_bitstream_reader
2538 enable static
2539 enable swscale_alpha
2540 enable valgrind_backtrace
2541
2542 # By default, enable only those hwaccels that have no external dependencies.
2543 enable d3d11va dxva2 vda vdpau
2544
2545 # build settings
2546 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2547 LIBPREF="lib"
2548 LIBSUF=".a"
2549 LIBNAME='$(LIBPREF)$(NAME)$(LIBSUF)'
2550 SLIBPREF="lib"
2551 SLIBSUF=".so"
2552 SLIBNAME='$(SLIBPREF)$(NAME)$(SLIBSUF)'
2553 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2554 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2555 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2556 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2557 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2558 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2559
2560 asflags_filter=echo
2561 cflags_filter=echo
2562 ldflags_filter=echo
2563
2564 AS_C='-c'
2565 AS_O='-o $@'
2566 CC_C='-c'
2567 CC_E='-E -o $@'
2568 CC_O='-o $@'
2569 OBJCC_C='-c'
2570 OBJCC_E='-E -o $@'
2571 OBJCC_O='-o $@'
2572 LD_O='-o $@'
2573 LD_LIB='-l%'
2574 LD_PATH='-L'
2575 HOSTCC_C='-c'
2576 HOSTCC_E='-E -o $@'
2577 HOSTCC_O='-o $@'
2578 HOSTLD_O='-o $@'
2579
2580 host_libs='-lm'
2581 host_cflags_filter=echo
2582 host_ldflags_filter=echo
2583
2584 target_path='$(CURDIR)'
2585
2586 # since the object filename is not given with the -MM flag, the compiler
2587 # is only able to print the basename, and we must add the path ourselves
2588 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2589 DEPFLAGS='-MM'
2590
2591 # find source path
2592 if test -f configure; then
2593     source_path=.
2594 else
2595     source_path=$(cd $(dirname "$0"); pwd)
2596     echo "$source_path" | grep -q '[[:blank:]]' &&
2597         die "Out of tree builds are impossible with whitespace in source path."
2598     test -e "$source_path/config.h" &&
2599         die "Out of tree builds are impossible with config.h in source dir."
2600 fi
2601
2602 for v in "$@"; do
2603     r=${v#*=}
2604     l=${v%"$r"}
2605     r=$(sh_quote "$r")
2606     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2607 done
2608
2609 find_things(){
2610     thing=$1
2611     pattern=$2
2612     file=$source_path/$3
2613     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2614 }
2615
2616 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2617 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2618 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2619 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2620 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2621 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2622 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2623 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2624 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2625
2626 find_things_extern(){
2627     thing=$1
2628     pattern=$2
2629     file=$source_path/$3
2630     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2631 }
2632
2633 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2634 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2635
2636 ALL_COMPONENTS="
2637     $BSF_LIST
2638     $DECODER_LIST
2639     $DEMUXER_LIST
2640     $ENCODER_LIST
2641     $FILTER_LIST
2642     $HWACCEL_LIST
2643     $INDEV_LIST
2644     $MUXER_LIST
2645     $OUTDEV_LIST
2646     $PARSER_LIST
2647     $PROTOCOL_LIST
2648 "
2649
2650 for n in $COMPONENT_LIST; do
2651     v=$(toupper ${n%s})_LIST
2652     eval enable \$$v
2653     eval ${n}_if_any="\$$v"
2654 done
2655
2656 enable $ARCH_EXT_LIST
2657
2658 die_unknown(){
2659     echo "Unknown option \"$1\"."
2660     echo "See $0 --help for available options."
2661     exit 1
2662 }
2663
2664 print_3_columns() {
2665     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2666 }
2667
2668 show_list() {
2669     suffix=_$1
2670     shift
2671     echo $* | sed s/$suffix//g | print_3_columns
2672     exit 0
2673 }
2674
2675 rand_list(){
2676     IFS=', '
2677     set -- $*
2678     unset IFS
2679     for thing; do
2680         comp=${thing%:*}
2681         prob=${thing#$comp}
2682         prob=${prob#:}
2683         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2684         echo "prob ${prob:-0.5}"
2685         printf '%s\n' $comp
2686     done
2687 }
2688
2689 do_random(){
2690     action=$1
2691     shift
2692     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2693     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2694 }
2695
2696 for opt do
2697     optval="${opt#*=}"
2698     case "$opt" in
2699         --extra-ldflags=*)
2700             add_ldflags $optval
2701         ;;
2702         --extra-ldexeflags=*)
2703             add_ldexeflags $optval
2704         ;;
2705         --extra-libs=*)
2706             add_extralibs $optval
2707         ;;
2708         --disable-devices)
2709             disable $INDEV_LIST $OUTDEV_LIST
2710         ;;
2711         --enable-debug=*)
2712             debuglevel="$optval"
2713         ;;
2714         --disable-programs)
2715             disable $PROGRAM_LIST
2716         ;;
2717         --disable-everything)
2718             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2719         ;;
2720         --disable-all)
2721             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2722             disable $LIBRARY_LIST $PROGRAM_LIST doc
2723         ;;
2724         --enable-random|--disable-random)
2725             action=${opt%%-random}
2726             do_random ${action#--} $COMPONENT_LIST
2727         ;;
2728         --enable-random=*|--disable-random=*)
2729             action=${opt%%-random=*}
2730             do_random ${action#--} $optval
2731         ;;
2732         --enable-*=*|--disable-*=*)
2733             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2734             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2735             eval list=\$$(toupper $thing)_LIST
2736             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2737             $action $(filter "$name" $list)
2738         ;;
2739         --enable-avserver|--disable-avserver*)
2740             warn "avserver has been removed, the ${opt} option is only"\
2741                  "provided for compatibility and will be removed in the future"
2742         ;;
2743         --enable-?*|--disable-?*)
2744             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2745             if is_in $option $COMPONENT_LIST; then
2746                 test $action = disable && action=unset
2747                 eval $action \$$(toupper ${option%s})_LIST
2748             elif is_in $option $CMDLINE_SELECT; then
2749                 $action $option
2750             else
2751                 die_unknown $opt
2752             fi
2753         ;;
2754         --list-*)
2755             NAME="${opt#--list-}"
2756             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2757             NAME=${NAME%s}
2758             eval show_list $NAME \$$(toupper $NAME)_LIST
2759         ;;
2760         --help|-h) show_help
2761         ;;
2762         --quiet|-q) quiet=yes
2763         ;;
2764         *)
2765             optname="${opt%%=*}"
2766             optname="${optname#--}"
2767             optname=$(echo "$optname" | sed 's/-/_/g')
2768             if is_in $optname $CMDLINE_SET; then
2769                 eval $optname='$optval'
2770             elif is_in $optname $CMDLINE_APPEND; then
2771                 append $optname "$optval"
2772             else
2773                 die_unknown $opt
2774             fi
2775         ;;
2776     esac
2777 done
2778
2779 for e in $env; do
2780     eval "export $e"
2781 done
2782
2783 disabled logging && logfile=/dev/null
2784
2785 # Die early if licensing-related configure options are incompatible.
2786 die_license_disabled() {
2787     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2788 }
2789
2790 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
2791 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2792 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2793
2794 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2795
2796 # Disable all the library-specific components if the library itself
2797 # is disabled, see AVCODEC_LIST and following _LIST variables.
2798
2799 disable_components(){
2800     disabled ${1} && disable $(
2801         eval components="\$$(toupper ${1})_COMPONENTS"
2802         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2803     )
2804 }
2805
2806 map 'disable_components $v' $LIBRARY_LIST
2807
2808 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2809 set >> $logfile
2810
2811 case "$toolchain" in
2812     *-asan)
2813         cc_default="${toolchain%-asan}"
2814         add_cflags  -fsanitize=address
2815         add_ldflags -fsanitize=address
2816     ;;
2817     *-msan)
2818         cc_default="${toolchain%-msan}"
2819         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2820         add_ldflags -fsanitize=memory
2821     ;;
2822     *-tsan)
2823         cc_default="${toolchain%-tsan}"
2824         add_cflags  -fsanitize=thread -fPIE
2825         add_ldflags -fsanitize=thread -pie
2826         case "$toolchain" in
2827             gcc-tsan)
2828                 add_cflags  -fPIC
2829                 add_ldflags -fPIC
2830                 ;;
2831         esac
2832     ;;
2833     *-usan)
2834         cc_default="${toolchain%-usan}"
2835         add_cflags  -fsanitize=undefined
2836         add_ldflags -fsanitize=undefined
2837         case "$toolchain" in
2838             clang-usan)
2839                 add_cflags -O1
2840                 ;;
2841         esac
2842     ;;
2843     valgrind-*)
2844         target_exec_default="valgrind"
2845         case "$toolchain" in
2846             valgrind-massif)
2847                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2848                 ;;
2849             valgrind-memcheck)
2850                 target_exec_args="--track-origins=yes --leak-check=full"
2851                 ;;
2852         esac
2853     ;;
2854     msvc)
2855         # Check whether the current MSVC version needs the C99 converter.
2856         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2857         # support enough of C99 to build libav. Default to the new
2858         # behaviour if the regexp was unable to match anything, since this
2859         # successfully parses the version number of existing supported
2860         # versions that require the converter (MSVC 2010 and 2012).
2861         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2862         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2863             cc_default="cl"
2864         else
2865             cc_default="c99wrap cl"
2866         fi
2867         ld_default="$source_path/compat/windows/mslink"
2868         nm_default="dumpbin -symbols"
2869         ar_default="lib"
2870         case "$arch" in
2871         arm*)
2872             as_default="armasm"
2873             ;;
2874         esac
2875         target_os_default="win32"
2876         # Use a relative path for TMPDIR. This makes sure all the
2877         # ffconf temp files are written with a relative path, avoiding
2878         # issues with msys/win32 path conversion for MSVC parameters
2879         # such as -Fo<file> or -out:<file>.
2880         TMPDIR=.
2881     ;;
2882     icl)
2883         cc_default="icl"
2884         ld_default="xilink"
2885         nm_default="dumpbin -symbols"
2886         ar_default="xilib"
2887         target_os_default="win32"
2888         TMPDIR=.
2889     ;;
2890     gcov)
2891         add_cflags  -fprofile-arcs -ftest-coverage
2892         add_ldflags -fprofile-arcs -ftest-coverage
2893     ;;
2894     llvm-cov)
2895         add_cflags -fprofile-arcs -ftest-coverage
2896         add_ldflags --coverage
2897     ;;
2898     hardened)
2899         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2900         add_cflags   -fno-strict-overflow -fstack-protector-all
2901         add_ldflags  -Wl,-z,relro -Wl,-z,now
2902     ;;
2903     ?*)
2904         die "Unknown toolchain $toolchain"
2905     ;;
2906 esac
2907
2908 test -n "$cross_prefix" && enable cross_compile
2909
2910 if enabled cross_compile; then
2911     test -n "$arch" && test -n "$target_os" ||
2912         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
2913 fi
2914
2915 ar_default="${cross_prefix}${ar_default}"
2916 cc_default="${cross_prefix}${cc_default}"
2917 occ_default="${cross_prefix}${occ_default}"
2918 nm_default="${cross_prefix}${nm_default}"
2919 pkg_config_default="${cross_prefix}${pkg_config_default}"
2920 ranlib="${cross_prefix}${ranlib}"
2921 strip="${cross_prefix}${strip}"
2922
2923 sysinclude_default="${sysroot}/usr/include"
2924
2925 set_default arch cc pkg_config sysinclude target_exec target_os
2926 enabled cross_compile || host_cc_default=$cc
2927 set_default host_cc
2928
2929 if ! $pkg_config --version >/dev/null 2>&1; then
2930     warn "$pkg_config not found, library detection may fail."
2931     pkg_config=false
2932 fi
2933
2934 exesuf() {
2935     case $1 in
2936         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2937     esac
2938 }
2939
2940 EXESUF=$(exesuf $target_os)
2941 HOSTEXESUF=$(exesuf $host_os)
2942
2943 # set temporary file name
2944 : ${TMPDIR:=$TEMPDIR}
2945 : ${TMPDIR:=$TMP}
2946 : ${TMPDIR:=/tmp}
2947
2948 if ! check_cmd mktemp -u XXXXXX; then
2949     # simple replacement for missing mktemp
2950     # NOT SAFE FOR GENERAL USE
2951     mktemp(){
2952         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2953     }
2954 fi
2955
2956 tmpfile(){
2957     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2958         (set -C; exec > $tmp) 2>/dev/null ||
2959         die "Unable to create temporary file in $TMPDIR."
2960     append TMPFILES $tmp
2961     eval $1=$tmp
2962 }
2963
2964 trap 'rm -f -- $TMPFILES' EXIT
2965
2966 tmpfile TMPASM .asm
2967 tmpfile TMPC   .c
2968 tmpfile TMPE   $EXESUF
2969 tmpfile TMPH   .h
2970 tmpfile TMPO   .o
2971 tmpfile TMPS   .S
2972 tmpfile TMPSH  .sh
2973 tmpfile TMPV   .ver
2974
2975 unset -f mktemp
2976
2977 chmod +x $TMPE
2978
2979 # make sure we can execute files in $TMPDIR
2980 cat > $TMPSH 2>> $logfile <<EOF
2981 #! /bin/sh
2982 EOF
2983 chmod +x $TMPSH >> $logfile 2>&1
2984 if ! $TMPSH >> $logfile 2>&1; then
2985     cat <<EOF
2986 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2987 variable to another directory and make sure that it is not mounted noexec.
2988 EOF
2989     die "Sanity test failed."
2990 fi
2991
2992 armasm_flags(){
2993     for flag; do
2994         case $flag in
2995             # Filter out MSVC cl.exe options from cflags that shouldn't
2996             # be passed to gas-preprocessor
2997             -M[TD]*)                                            ;;
2998             *)                  echo $flag                      ;;
2999         esac
3000    done
3001 }
3002
3003 ccc_flags(){
3004     for flag; do
3005         case $flag in
3006             -std=c99)           echo -c99                       ;;
3007             -mcpu=*)            echo -arch ${flag#*=}           ;;
3008             -mieee)             echo -ieee                      ;;
3009             -O*|-fast)          echo $flag                      ;;
3010             -fno-math-errno)    echo -assume nomath_errno       ;;
3011             -g)                 echo -g3                        ;;
3012             -Wall)              echo -msg_enable level2         ;;
3013             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3014             -Wl,*)              echo $flag                      ;;
3015             -f*|-W*)                                            ;;
3016             *)                  echo $flag                      ;;
3017         esac
3018    done
3019 }
3020
3021 cparser_flags(){
3022     for flag; do
3023         case $flag in
3024             -Wno-switch)             echo -Wno-switch-enum ;;
3025             -Wno-format-zero-length) ;;
3026             -Wdisabled-optimization) ;;
3027             -Wno-pointer-sign)       echo -Wno-other ;;
3028             *)                       echo $flag ;;
3029         esac
3030     done
3031 }
3032
3033 msvc_common_flags(){
3034     for flag; do
3035         case $flag in
3036             # In addition to specifying certain flags under the compiler
3037             # specific filters, they must be specified here as well or else the
3038             # generic catch all at the bottom will print the original flag.
3039             -Wall)                ;;
3040             -std=c99)             ;;
3041             # Common flags
3042             -fomit-frame-pointer) ;;
3043             -g)                   echo -Z7 ;;
3044             -fno-math-errno)      ;;
3045             -fno-common)          ;;
3046             -fno-signed-zeros)    ;;
3047             -fPIC)                ;;
3048             -mthumb)              ;;
3049             -march=*)             ;;
3050             -lz)                  echo zlib.lib ;;
3051             -lavicap32)           echo vfw32.lib user32.lib ;;
3052             -lx264)               echo libx264.lib ;;
3053             -l*)                  echo ${flag#-l}.lib ;;
3054             -L*)                  echo -libpath:${flag#-L} ;;
3055             *)                    echo $flag ;;
3056         esac
3057     done
3058 }
3059
3060 msvc_flags(){
3061     msvc_common_flags "$@"
3062     for flag; do
3063         case $flag in
3064             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3065                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3066                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3067                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3068         esac
3069     done
3070 }
3071
3072 icl_flags(){
3073     msvc_common_flags "$@"
3074     for flag; do
3075         case $flag in
3076             # Despite what Intel's documentation says -Wall, which is supported
3077             # on Windows, does enable remarks so disable them here.
3078             -Wall)                echo $flag -Qdiag-disable:remark ;;
3079             -std=c99)             echo -Qstd=c99 ;;
3080         esac
3081     done
3082 }
3083
3084 pgi_flags(){
3085     for flag; do
3086         case $flag in
3087             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3088             -fomit-frame-pointer) echo -Mnoframe ;;
3089             -g)                   echo -gopt ;;
3090             *)                    echo $flag ;;
3091         esac
3092     done
3093 }
3094
3095 suncc_flags(){
3096     for flag; do
3097         case $flag in
3098             -march=*|-mcpu=*)
3099                 case "${flag#*=}" in
3100                     native)                   echo -xtarget=native       ;;
3101                     v9|niagara)               echo -xarch=sparc          ;;
3102                     ultrasparc)               echo -xarch=sparcvis       ;;
3103                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3104                     i586|pentium)             echo -xchip=pentium        ;;
3105                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3106                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3107                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3108                     pentium4*)          echo -xtarget=pentium4           ;;
3109                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3110                     *-sse3)             echo -xarch=sse3                 ;;
3111                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3112                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3113                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3114                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3115                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3116                     k8|opteron|athlon64|athlon-fx)
3117                                                echo -xarch=sse2a         ;;
3118                     athlon*)                   echo -xarch=pentium_proa  ;;
3119                 esac
3120                 ;;
3121             -std=c99)             echo -xc99              ;;
3122             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3123             -fPIC)                echo -KPIC -xcode=pic32 ;;
3124             -W*,*)                echo $flag              ;;
3125             -f*-*|-W*|-mimpure-text)                      ;;
3126             -shared)              echo -G                 ;;
3127             *)                    echo $flag              ;;
3128         esac
3129     done
3130 }
3131
3132 tms470_flags(){
3133     for flag; do
3134         case $flag in
3135             -march=*|-mcpu=*)
3136                 case "${flag#*=}" in
3137                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3138                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3139                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3140                     armv6*|arm11*)          echo -mv=6   ;;
3141                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3142                                             echo -mv=5e  ;;
3143                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3144                 esac
3145                 ;;
3146             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3147             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3148             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3149             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3150             -msoft-float)   echo --float_support=vfplib       ;;
3151             -O[0-3]|-mf=*)  echo $flag                        ;;
3152             -g)             echo -g -mn                       ;;
3153             -pds=*)         echo $flag                        ;;
3154             -D*|-I*)        echo $flag                        ;;
3155             --gcc|--abi=*)  echo $flag                        ;;
3156             -me)            echo $flag                        ;;
3157         esac
3158     done
3159 }
3160
3161 probe_cc(){
3162     pfx=$1
3163     _cc=$2
3164
3165     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3166     unset _ld_o _ldflags _ld_lib _ld_path
3167     unset _depflags _DEPCMD _DEPFLAGS
3168     _flags_filter=echo
3169
3170     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3171         _type=llvm_gcc
3172         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3173         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3174         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3175         _cflags_speed='-O3'
3176         _cflags_size='-Os'
3177     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3178         _type=gcc
3179         gcc_version=$($_cc --version | head -n1)
3180         gcc_basever=$($_cc -dumpversion)
3181         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3182         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3183         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3184         if ! $_cc -dumpversion | grep -q '^2\.'; then
3185             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3186         fi
3187         _cflags_speed='-O3'
3188         _cflags_size='-Os'
3189     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3190         _type=icc
3191         _ident=$($_cc --version | head -n1)
3192         _depflags='-MMD'
3193         _cflags_speed='-O3'
3194         _cflags_size='-Os'
3195         _cflags_noopt='-O1'
3196     elif $_cc -v 2>&1 | grep -q xlc; then
3197         _type=xlc
3198         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3199         _cflags_speed='-O5'
3200         _cflags_size='-O5 -qcompact'
3201     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3202         _type=ccc
3203         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3204         _DEPFLAGS='-M'
3205         _cflags_speed='-fast'
3206         _cflags_size='-O1'
3207         _flags_filter=ccc_flags
3208     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3209         test -d "$sysroot" || die "No valid sysroot specified."
3210         _type=armcc
3211         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3212         armcc_conf="$PWD/armcc.conf"
3213         $_cc --arm_linux_configure                 \
3214              --arm_linux_config_file="$armcc_conf" \
3215              --configure_sysroot="$sysroot"        \
3216              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3217              die "Error creating armcc configuration file."
3218         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3219         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3220         as_default="${cross_prefix}gcc"
3221         _depflags='-MMD'
3222         _cflags_speed='-O3'
3223         _cflags_size='-Os'
3224     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3225         _type=tms470
3226         _ident=$($_cc -version | head -n1 | tr -s ' ')
3227         _flags='--gcc --abi=eabi -me'
3228         _cc_e='-ppl -fe=$@'
3229         _cc_o='-fe=$@'
3230         _depflags='-ppa -ppd=$(@:.o=.d)'
3231         _cflags_speed='-O3 -mf=5'
3232         _cflags_size='-O3 -mf=2'
3233         _flags_filter=tms470_flags
3234     elif $_cc -v 2>&1 | grep -q clang; then
3235         _type=clang
3236         _ident=$($_cc --version 2>/dev/null | head -n1)
3237         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3238         _cflags_speed='-O3'
3239         _cflags_size='-Os'
3240     elif $_cc -V 2>&1 | grep -q Sun; then
3241         _type=suncc
3242         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3243         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3244         _DEPFLAGS='-xM1 -xc99'
3245         _ldflags='-std=c99'
3246         _cflags_speed='-O5'
3247         _cflags_size='-O5 -xspace'
3248         _flags_filter=suncc_flags
3249     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3250         _type=pathscale
3251         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3252         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3253         _cflags_speed='-O2'
3254         _cflags_size='-Os'
3255         _flags_filter='filter_out -Wdisabled-optimization'
3256     elif $_cc -v 2>&1 | grep -q Open64; then
3257         _type=open64
3258         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3259         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3260         _cflags_speed='-O2'
3261         _cflags_size='-Os'
3262         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3263     elif $_cc -V 2>&1 | grep -q Portland; then
3264         _type=pgi
3265         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3266         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3267         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3268         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3269         _cflags_noopt="-O1"
3270         _flags_filter=pgi_flags
3271     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3272         _type=armasm
3273         _ident=$($_cc | head -n1)
3274         # 4509: "This form of conditional instruction is deprecated"
3275         _flags="-nologo -ignore 4509"
3276         _flags_filter=armasm_flags
3277     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3278         _type=msvc
3279         _ident=$($_cc 2>&1 | head -n1)
3280         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3281         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3282         _cflags_speed="-O2"
3283         _cflags_size="-O1"
3284         if $_cc -nologo- 2>&1 | grep -q Linker; then
3285             _ld_o='-out:$@'
3286         else
3287             _ld_o='-Fe$@'
3288         fi
3289         _cc_o='-Fo$@'
3290         _cc_e='-P -Fi$@'
3291         _flags_filter=msvc_flags
3292         _ld_lib='lib%.a'
3293         _ld_path='-libpath:'
3294         _flags='-nologo'
3295     elif $_cc 2>&1 | grep -q Intel; then
3296         _type=icl
3297         _ident=$($_cc 2>&1 | head -n1)
3298         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3299         # Not only is O3 broken on 13.x+ but it is slower on all previous
3300         # versions (tested) as well.
3301         _cflags_speed="-O2"
3302         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3303         if $_cc 2>&1 | grep -q Linker; then
3304             _ld_o='-out:$@'
3305         else
3306             _ld_o='-Fe$@'
3307         fi
3308         _cc_o='-Fo$@'
3309         _cc_e='-P'
3310         _flags_filter=icl_flags
3311         _ld_lib='lib%.a'
3312         _ld_path='-libpath:'
3313         # -Qdiag-error to make icl error when seeing certain unknown arguments
3314         _flags='-nologo -Qdiag-error:4044,10157'
3315         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3316         # with MSVC which enables it by default.
3317         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3318     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3319         # lld can emulate multiple different linkers; in ms link.exe mode,
3320         # the -? parameter gives the help output which contains an identifyable
3321         # string, while it gives an error in other modes.
3322         _type=lld-link
3323         # The link.exe mode doesn't have a switch for getting the version,
3324         # but we can force it back to gnu mode and get the version from there.
3325         _ident=$($_cc -flavor gnu --version 2>/dev/null)
3326         _ld_o='-out:$@'
3327         _flags_filter=msvc_flags
3328         _ld_lib='lib%.a'
3329         _ld_path='-libpath:'
3330     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3331         _type=cparser
3332         _ident=$($_cc --version | head -n1)
3333         _depflags='-MMD'
3334         _cflags_speed='-O4'
3335         _cflags_size='-O2'
3336         _flags_filter=cparser_flags
3337     fi
3338
3339     eval ${pfx}_type=\$_type
3340     eval ${pfx}_ident=\$_ident
3341 }
3342
3343 set_ccvars(){
3344     eval ${1}_C=\${_cc_c-\${${1}_C}}
3345     eval ${1}_E=\${_cc_e-\${${1}_E}}
3346     eval ${1}_O=\${_cc_o-\${${1}_O}}
3347
3348     if [ -n "$_depflags" ]; then
3349         eval ${1}_DEPFLAGS=\$_depflags
3350     else
3351         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3352         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3353         eval DEP${1}FLAGS=\$_flags
3354     fi
3355 }
3356
3357 probe_cc cc "$cc"
3358 cflags_filter=$_flags_filter
3359 cflags_speed=$_cflags_speed
3360 cflags_size=$_cflags_size
3361 cflags_noopt=$_cflags_noopt
3362 add_cflags $_flags $_cflags
3363 cc_ldflags=$_ldflags
3364 set_ccvars CC
3365
3366 probe_cc hostcc "$host_cc"
3367 host_cflags_filter=$_flags_filter
3368 add_host_cflags  $_flags $_cflags
3369 set_ccvars HOSTCC
3370
3371 test -n "$cc_type" && enable $cc_type ||
3372     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3373
3374 : ${as_default:=$cc}
3375 : ${objcc_default:=$cc}
3376 : ${dep_cc_default:=$cc}
3377 : ${ld_default:=$cc}
3378 : ${host_ld_default:=$host_cc}
3379 set_default ar as objcc dep_cc ld host_ld
3380
3381 probe_cc as "$as"
3382 asflags_filter=$_flags_filter
3383 add_asflags $_flags $_cflags
3384 set_ccvars AS
3385
3386 probe_cc objcc "$objcc"
3387 objcflags_filter=$_flags_filter
3388 add_objcflags $_flags $_cflags
3389 set_ccvars OBJC
3390
3391 probe_cc ld "$ld"
3392 ldflags_filter=$_flags_filter
3393 add_ldflags $_flags $_ldflags
3394 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3395 LD_O=${_ld_o-$LD_O}
3396 LD_LIB=${_ld_lib-$LD_LIB}
3397 LD_PATH=${_ld_path-$LD_PATH}
3398
3399 probe_cc hostld "$host_ld"
3400 host_ldflags_filter=$_flags_filter
3401 add_host_ldflags $_flags $_ldflags
3402 HOSTLD_O=${_ld_o-$HOSTLD_O}
3403
3404 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3405     probe_cc depcc "$dep_cc"
3406     CCDEP=${_DEPCMD:-$DEPCMD}
3407     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3408     DEPCCFLAGS=$_flags
3409 fi
3410
3411 if $ar 2>&1 | grep -q Microsoft; then
3412     arflags="-nologo"
3413     ar_o='-out:$@'
3414 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3415     arflags="rq"
3416     ar_o='$@'
3417 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3418     arflags='-Xany -r -c'
3419     ar_o='$@'
3420 else
3421     arflags="rc"
3422     ar_o='$@'
3423 fi
3424
3425 add_cflags $extra_cflags
3426 add_objcflags $extra_objcflags
3427 add_asflags $extra_cflags
3428
3429 if test -n "$sysroot"; then
3430     case "$cc_type" in
3431         gcc|llvm_gcc|clang)
3432             add_cppflags --sysroot="$sysroot"
3433             add_ldflags --sysroot="$sysroot"
3434         ;;
3435         tms470)
3436             add_cppflags -I"$sysinclude"
3437             add_ldflags  --sysroot="$sysroot"
3438         ;;
3439     esac
3440 fi
3441
3442 if test "$cpu" = host; then
3443     enabled cross_compile &&
3444         die "--cpu=host makes no sense when cross-compiling."
3445
3446     case "$cc_type" in
3447         gcc|llvm_gcc)
3448             check_native(){
3449                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3450                 sed -n "/cc1.*$1=/{
3451                             s/.*$1=\\([^ ]*\\).*/\\1/
3452                             p
3453                             q
3454                         }" $TMPE
3455             }
3456             cpu=$(check_native -march || check_native -mcpu)
3457         ;;
3458     esac
3459
3460     test "${cpu:-host}" = host &&
3461         die "--cpu=host not supported with compiler $cc"
3462 fi
3463
3464 # Deal with common $arch aliases
3465 case "$arch" in
3466     aarch64|arm64)
3467         arch="aarch64"
3468     ;;
3469     arm*)
3470         arch="arm"
3471     ;;
3472     mips*|IP*)
3473         case "$arch" in
3474         *el)
3475             add_cppflags -EL
3476             add_ldflags -EL
3477         ;;
3478         *eb)
3479             add_cppflags -EB
3480             add_ldflags -EB
3481         ;;
3482         esac
3483         arch="mips"
3484     ;;
3485     parisc*|hppa*)
3486         arch="parisc"
3487     ;;
3488     "Power Macintosh"|ppc*|powerpc*)
3489         arch="ppc"
3490     ;;
3491     s390|s390x)
3492         arch="s390"
3493     ;;
3494     sh4|sh)
3495         arch="sh4"
3496     ;;
3497     sun4u|sparc*)
3498         arch="sparc"
3499     ;;
3500     tilegx|tile-gx)
3501         arch="tilegx"
3502     ;;
3503     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3504         arch="x86"
3505     ;;
3506 esac
3507
3508 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3509 enable $arch
3510
3511 # Add processor-specific flags
3512 if enabled aarch64; then
3513
3514     case $cpu in
3515         armv*)
3516             cpuflags="-march=$cpu"
3517         ;;
3518         *)
3519             cpuflags="-mcpu=$cpu"
3520         ;;
3521     esac
3522
3523 elif enabled alpha; then
3524
3525     cpuflags="-mcpu=$cpu"
3526
3527 elif enabled arm; then
3528
3529     check_arm_arch() {
3530         check_cpp_condition stddef.h \
3531             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3532             $cpuflags
3533     }
3534
3535     probe_arm_arch() {
3536         if   check_arm_arch 4;        then echo armv4
3537         elif check_arm_arch 4T;       then echo armv4t
3538         elif check_arm_arch 5;        then echo armv5
3539         elif check_arm_arch 5E;       then echo armv5e
3540         elif check_arm_arch 5T;       then echo armv5t
3541         elif check_arm_arch 5TE;      then echo armv5te
3542         elif check_arm_arch 5TEJ;     then echo armv5te
3543         elif check_arm_arch 6;        then echo armv6
3544         elif check_arm_arch 6J;       then echo armv6j
3545         elif check_arm_arch 6K;       then echo armv6k
3546         elif check_arm_arch 6Z;       then echo armv6z
3547         elif check_arm_arch 6ZK;      then echo armv6zk
3548         elif check_arm_arch 6T2;      then echo armv6t2
3549         elif check_arm_arch 7;        then echo armv7
3550         elif check_arm_arch 7A  7_A;  then echo armv7-a
3551         elif check_arm_arch 7S;       then echo armv7-a
3552         elif check_arm_arch 7R  7_R;  then echo armv7-r
3553         elif check_arm_arch 7M  7_M;  then echo armv7-m
3554         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3555         elif check_arm_arch 8A  8_A;  then echo armv8-a
3556         fi
3557     }
3558
3559     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3560
3561     case $cpu in
3562         armv*)
3563             cpuflags="-march=$cpu"
3564             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3565         ;;
3566         *)
3567             cpuflags="-mcpu=$cpu"
3568             case $cpu in
3569                 cortex-a*)                               subarch=armv7a  ;;
3570                 cortex-r*)                               subarch=armv7r  ;;
3571                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3572                 arm11*)                                  subarch=armv6   ;;
3573                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3574                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3575                 *)                             subarch=$(probe_arm_arch) ;;
3576             esac
3577         ;;
3578     esac
3579
3580     case "$subarch" in
3581         armv5t*)    enable fast_clz                ;;
3582         armv[6-8]*) enable fast_clz fast_unaligned ;;
3583     esac
3584
3585 elif enabled avr32; then
3586
3587     case $cpu in
3588         ap7[02]0[0-2])
3589             subarch="avr32_ap"
3590             cpuflags="-mpart=$cpu"
3591         ;;
3592         ap)
3593             subarch="avr32_ap"
3594             cpuflags="-march=$cpu"
3595         ;;
3596         uc3[ab]*)
3597             subarch="avr32_uc"
3598             cpuflags="-mcpu=$cpu"
3599         ;;
3600         uc)
3601             subarch="avr32_uc"
3602             cpuflags="-march=$cpu"
3603         ;;
3604     esac
3605
3606 elif enabled bfin; then
3607
3608     cpuflags="-mcpu=$cpu"
3609
3610 elif enabled mips; then
3611
3612     cpuflags="-march=$cpu"
3613
3614 elif enabled ppc; then
3615
3616     disable ldbrx
3617
3618     case $(tolower $cpu) in
3619         601|ppc601|powerpc601)
3620             cpuflags="-mcpu=601"
3621             disable altivec
3622         ;;
3623         603*|ppc603*|powerpc603*)
3624             cpuflags="-mcpu=603"
3625             disable altivec
3626         ;;
3627         604*|ppc604*|powerpc604*)
3628             cpuflags="-mcpu=604"
3629             disable altivec
3630         ;;
3631         g3|75*|ppc75*|powerpc75*)
3632             cpuflags="-mcpu=750"
3633             disable altivec
3634         ;;
3635         g4|745*|ppc745*|powerpc745*)
3636             cpuflags="-mcpu=7450"
3637             disable vsx
3638         ;;
3639         74*|ppc74*|powerpc74*)
3640             cpuflags="-mcpu=7400"
3641             disable vsx
3642         ;;
3643         g5|970|ppc970|powerpc970)
3644             cpuflags="-mcpu=970"
3645             disable vsx
3646         ;;
3647         power[3-6]*)
3648             cpuflags="-mcpu=$cpu"
3649             disable vsx
3650         ;;
3651         power[7-8]*)
3652             cpuflags="-mcpu=$cpu"
3653             enable ldbrx
3654         ;;
3655         cell)
3656             cpuflags="-mcpu=cell"
3657             enable ldbrx
3658             disable vsx
3659         ;;
3660         e500mc)
3661             cpuflags="-mcpu=e500mc"
3662             disable altivec
3663         ;;
3664         e500v2)
3665             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3666             disable altivec
3667             disable dcbzl
3668         ;;
3669         e500)
3670             cpuflags="-mcpu=8540 -mhard-float"
3671             disable altivec
3672             disable dcbzl
3673         ;;
3674     esac
3675
3676 elif enabled sparc; then
3677
3678     case $cpu in
3679         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3680             cpuflags="-mcpu=$cpu"
3681         ;;
3682         ultrasparc*|niagara[234])
3683             cpuflags="-mcpu=$cpu"
3684         ;;
3685     esac
3686
3687 elif enabled x86; then
3688
3689     case $cpu in
3690         i[345]86|pentium)
3691             cpuflags="-march=$cpu"
3692             disable i686
3693             disable mmx
3694         ;;
3695         # targets that do NOT support nopl and conditional mov (cmov)
3696         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3697             cpuflags="-march=$cpu"
3698             disable i686
3699         ;;
3700         # targets that do support nopl and conditional mov (cmov)
3701         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3702             cpuflags="-march=$cpu"
3703             enable i686
3704             enable fast_cmov
3705         ;;
3706         # targets that do support conditional mov but on which it's slow
3707         pentium4|pentium4m|prescott|nocona)
3708             cpuflags="-march=$cpu"
3709             enable i686
3710             disable fast_cmov
3711         ;;
3712     esac
3713
3714 fi
3715
3716 if [ "$cpu" != generic ]; then
3717     add_cflags  $cpuflags
3718     add_asflags $cpuflags
3719     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3720 fi
3721
3722 # compiler sanity check
3723 check_exec <<EOF
3724 int main(void){ return 0; }
3725 EOF
3726 if test "$?" != 0; then
3727     echo "$cc is unable to create an executable file."
3728     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3729         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3730         echo "Only do this if you know what cross compiling means."
3731     fi
3732     die "C compiler test failed."
3733 fi
3734
3735 add_cppflags -D_ISOC99_SOURCE
3736
3737 # some compilers silently accept -std=c11, so we also need to check that the
3738 # version macro is defined properly
3739 if test_cflags_cpp -std=c11 "__STDC_VERSION__ >= 201112L"; then
3740     add_cflags -std=c11
3741 else
3742     check_cflags -std=c99
3743 fi
3744
3745 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3746 #include <stdlib.h>
3747 EOF
3748 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3749 #include <stdlib.h>
3750 EOF
3751
3752 add_host_cppflags -D_ISOC99_SOURCE
3753 check_host_cflags -std=c99
3754 check_host_cflags -Wall
3755 check_host_cflags -O3
3756
3757 check_64bit(){
3758     arch32=$1
3759     arch64=$2
3760     expr=$3
3761     check_code cc "" "int test[2*($expr) - 1]" &&
3762         subarch=$arch64 || subarch=$arch32
3763 }
3764
3765 case "$arch" in
3766     aarch64|alpha|ia64)
3767         spic=$shared
3768     ;;
3769     mips)
3770         check_64bit mips mips64 '_MIPS_SIM > 1'
3771         spic=$shared
3772     ;;
3773     parisc)
3774         check_64bit parisc parisc64 'sizeof(void *) > 4'
3775         spic=$shared
3776     ;;
3777     ppc)
3778         check_64bit ppc ppc64 'sizeof(void *) > 4'
3779         spic=$shared
3780     ;;
3781     s390)
3782         check_64bit s390 s390x 'sizeof(void *) > 4'
3783         spic=$shared
3784     ;;
3785     sparc)
3786         check_64bit sparc sparc64 'sizeof(void *) > 4'
3787         spic=$shared
3788     ;;
3789     x86)
3790         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3791         if test "$subarch" = "x86_64"; then
3792             spic=$shared
3793         fi
3794     ;;
3795 esac
3796
3797 enable $subarch
3798 enabled spic && enable_weak pic
3799
3800 # OS specific
3801 case $target_os in
3802     aix)
3803         SHFLAGS=-shared
3804         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3805         enabled shared && add_ldflags -Wl,-brtl
3806         ;;
3807     android)
3808         disable symver
3809         enable section_data_rel_ro
3810         SLIB_INSTALL_NAME='$(SLIBNAME)'
3811         SLIB_INSTALL_LINKS=
3812         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3813         ;;
3814     haiku)
3815         prefix_default="/boot/common"
3816         network_extralibs="-lnetwork"
3817         host_libs=
3818         ;;
3819     sunos)
3820         SHFLAGS='-shared -Wl,-h,$$(@F)'
3821         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3822         network_extralibs="-lsocket -lnsl"
3823         # When using suncc to build, the Solaris linker will mark
3824         # an executable with each instruction set encountered by
3825         # the Solaris assembler.  As our libraries contain their own
3826         # guards for processor-specific code, instead suppress
3827         # generation of the HWCAPS ELF section on Solaris x86 only.
3828         enabled_all suncc x86 &&
3829             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3830             add_ldflags -Wl,-M,mapfile
3831         nm_default='nm -P -g'
3832         version_script='-M'
3833         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3834         ;;
3835     netbsd)
3836         disable symver
3837         oss_indev_extralibs="-lossaudio"
3838         oss_outdev_extralibs="-lossaudio"
3839         ;;
3840     openbsd|bitrig)
3841         disable symver
3842         SHFLAGS='-shared'
3843         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3844         SLIB_INSTALL_LINKS=
3845         oss_indev_extralibs="-lossaudio"
3846         oss_outdev_extralibs="-lossaudio"
3847         ;;
3848     dragonfly)
3849         disable symver
3850         ;;
3851     freebsd)
3852         ;;
3853     bsd/os)
3854         add_extralibs -lpoll -lgnugetopt
3855         ;;
3856     darwin)
3857         enabled ppc && add_asflags -force_cpusubtype_ALL
3858         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3859         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3860         add_ldflags -Wl,-dynamic,-search_paths_first
3861         SLIBSUF=".dylib"
3862         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME).$(LIBVERSION)$(SLIBSUF)'
3863         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME).$(LIBMAJOR)$(SLIBSUF)'
3864         objformat="macho"
3865         enabled x86_64 && objformat="macho64"
3866         enabled_any pic shared ||
3867             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3868         check_header dispatch/dispatch.h &&
3869             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3870         ;;
3871     msys*)
3872         die "Native MSYS builds are discouraged, please use the MINGW environment."
3873         ;;
3874     mingw32*|mingw64*)
3875         if test $target_os = "mingw32ce"; then
3876             disable network
3877         else
3878             target_os=mingw32
3879         fi
3880         LIBTARGET=i386
3881         if enabled x86_64; then
3882             LIBTARGET="i386:x86-64"
3883         elif enabled arm; then
3884             LIBTARGET=arm-wince
3885         fi
3886         check_ldflags -Wl,--nxcompat
3887         check_ldflags -Wl,--dynamicbase
3888         shlibdir_default="$bindir_default"
3889         SLIBPREF=""
3890         SLIBSUF=".dll"
3891         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3892         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3893         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3894         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3895         SLIB_INSTALL_LINKS=
3896         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3897         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3898         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3899         objformat="win32"
3900         dlltool="${cross_prefix}dlltool"
3901         ranlib=:
3902         enable dos_paths
3903         ;;
3904     win32|win64)
3905         disable symver
3906         if enabled shared; then
3907             # Link to the import library instead of the normal static library
3908             # for shared libs.
3909             LD_LIB='%.lib'
3910             # Cannot build both shared and static libs with MSVC or icl.
3911             disable static
3912         fi
3913         shlibdir_default="$bindir_default"
3914         SLIBPREF=""
3915         SLIBSUF=".dll"
3916         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3917         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3918         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3919         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3920         SLIB_INSTALL_LINKS=
3921         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3922         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3923         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3924         objformat="win32"
3925         ranlib=:
3926         enable dos_paths
3927         ;;
3928     cygwin*)
3929         target_os=cygwin
3930         shlibdir_default="$bindir_default"
3931         SLIBPREF="cyg"
3932         SLIBSUF=".dll"
3933         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3934         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3935         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3936         SLIB_INSTALL_LINKS=
3937         SLIB_INSTALL_EXTRA_LIB='lib$(NAME).dll.a'
3938         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(NAME).dll.a'
3939         objformat="win32"
3940         enable dos_paths
3941         ;;
3942     *-dos|freedos|opendos)
3943         network_extralibs="-lsocket"
3944         objformat="coff"
3945         enable dos_paths
3946         add_cppflags -U__STRICT_ANSI__
3947         ;;
3948     linux)
3949         enable dv1394
3950         enable section_data_rel_ro
3951         ;;
3952     irix*)
3953         target_os=irix
3954         ranlib="echo ignoring ranlib"
3955         ;;
3956     os/2*)
3957         ln_s="cp -f"
3958         objformat="aout"
3959         add_cppflags -D_GNU_SOURCE
3960         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3961         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3962         LIBSUF="_s.a"
3963         SLIBPREF=""
3964         SLIBSUF=".dll"
3965         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3966         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3967         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3968             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3969             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3970             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3971             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
3972         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3973             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3974         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3975         enable dos_paths
3976         ;;
3977     gnu/kfreebsd)
3978         add_cppflags -D_BSD_SOURCE
3979         ;;
3980     gnu)
3981         ;;
3982     qnx)
3983         add_cppflags -D_QNX_SOURCE
3984         network_extralibs="-lsocket"
3985         ;;
3986     symbian)
3987         SLIBSUF=".dll"
3988         enable dos_paths
3989         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3990         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3991         add_ldflags -Wl,--target1-abs,--no-undefined \
3992                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3993                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3994         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3995                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3996                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3997         ;;
3998     osf1)
3999         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4000         ;;
4001     minix)
4002         ;;
4003     none)
4004         ;;
4005     *)
4006         die "Unknown OS '$target_os'."
4007         ;;
4008 esac
4009
4010 # determine libc flavour
4011
4012 probe_libc(){
4013     pfx=$1
4014     pfx_no_=${pfx%_}
4015     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4016     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4017         eval ${pfx}libc_type=uclibc
4018         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4019     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4020         eval ${pfx}libc_type=glibc
4021         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4022     # MinGW headers can be installed on Cygwin, so check for newlib first.
4023     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4024         eval ${pfx}libc_type=newlib
4025         add_${pfx}cppflags -U__STRICT_ANSI__
4026     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4027     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4028         eval ${pfx}libc_type=mingw64
4029         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4030         eval test \$${pfx_no_}cc_type = "gcc" &&
4031             add_${pfx}cppflags -D__printf__=__gnu_printf__
4032     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4033          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4034         eval ${pfx}libc_type=mingw32
4035         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4036             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4037             die "ERROR: MinGW32 runtime version must be >= 3.15."
4038         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4039         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700__" &&
4040             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
4041         eval test \$${pfx_no_}cc_type = "gcc" &&
4042             add_${pfx}cppflags -D__printf__=__gnu_printf__
4043     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4044         eval ${pfx}libc_type=msvcrt
4045         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4046             if [ "$pfx" = host_ ]; then
4047                 add_host_cppflags -Dsnprintf=_snprintf
4048             else
4049                 add_compat strtod.o strtod=avpriv_strtod
4050                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4051                                              _snprintf=avpriv_snprintf  \
4052                                              vsnprintf=avpriv_vsnprintf
4053             fi
4054         fi
4055         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
4056         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4057         # 0x601 by default unless something else is set by the user.
4058         # This can easily lead to us detecting functions only present
4059         # in such new versions and producing binaries requiring windows 7.0.
4060         # Therefore explicitly set the default to XP unless the user has
4061         # set something else on the command line.
4062         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4063         # family. For these cases, configure is free to use any functions
4064         # found in the SDK headers by default. (Alternatively, we could force
4065         # _WIN32_WINNT to 0x0602 in that case.)
4066         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4067             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4068 #ifdef WINAPI_FAMILY
4069 #include <winapifamily.h>
4070 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4071 #error not desktop
4072 #endif
4073 #endif
4074 EOF
4075         if [ "$pfx" = "" ]; then
4076             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4077         fi
4078     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4079         eval ${pfx}libc_type=klibc
4080     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4081         eval ${pfx}libc_type=bionic
4082     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4083         eval ${pfx}libc_type=solaris
4084         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4085     else
4086         eval ${pfx}libc_type=default
4087         add_${pfx}cppflags -D_DEFAULT_SOURCE
4088     fi
4089 }
4090
4091 probe_libc
4092 test -n "$libc_type" && enable libc_$libc_type
4093 probe_libc host_
4094 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4095
4096 case $libc_type in
4097     bionic)
4098         add_compat strtod.o strtod=avpriv_strtod
4099         ;;
4100 esac
4101
4102 # hacks for compiler/libc/os combinations
4103
4104 if enabled_all tms470 libc_glibc; then
4105     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4106     add_cppflags -D__USER_LABEL_PREFIX__=
4107     add_cppflags -D__builtin_memset=memset
4108     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4109     add_cflags   -pds=48    # incompatible redefinition of macro
4110 fi
4111
4112 if enabled_all ccc libc_glibc; then
4113     add_ldflags -Wl,-z,now  # calls to libots crash without this
4114 fi
4115
4116 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4117     add_cppflags '-I\$(SRC_PATH)/compat/float'
4118
4119 esc(){
4120     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4121 }
4122
4123 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
4124
4125 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4126
4127 set_default $PATHS_LIST
4128 set_default nm
4129
4130 # we need to build at least one lib type
4131 if ! enabled_any static shared; then
4132     cat <<EOF
4133 At least one library type must be built.
4134 Specify --enable-static to build the static libraries or --enable-shared to
4135 build the shared libraries as well. To only build the shared libraries specify
4136 --disable-static in addition to --enable-shared.
4137 EOF
4138     exit 1
4139 fi
4140
4141 disabled optimizations || check_cflags -fomit-frame-pointer
4142
4143 enable_weak_pic() {
4144     disabled pic && return
4145     enable pic
4146     add_cppflags -DPIC
4147     case "$target_os" in
4148     mingw*|cygwin*)
4149         ;;
4150     *)
4151         add_cflags -fPIC
4152         ;;
4153     esac
4154     add_asflags  -fPIC
4155 }
4156
4157 enabled pic && enable_weak_pic
4158
4159 check_cc <<EOF || die "Symbol mangling check failed."
4160 int ff_extern;
4161 EOF
4162 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4163 extern_prefix=${sym%%ff_extern*}
4164
4165 check_cc <<EOF && enable_weak inline_asm
4166 void foo(void) { __asm__ volatile ("" ::); }
4167 EOF
4168
4169 _restrict=
4170 for restrict_keyword in restrict __restrict__ __restrict; do
4171     check_cc <<EOF && _restrict=$restrict_keyword && break
4172 void foo(char * $restrict_keyword p);
4173 EOF
4174 done
4175
4176 check_cc <<EOF && enable pragma_deprecated
4177 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4178 EOF
4179
4180 check_cc <<EOF && enable attribute_packed
4181 struct { int x; } __attribute__((packed)) x;
4182 EOF
4183
4184 check_cc <<EOF && enable attribute_may_alias
4185 union { int x; } __attribute__((may_alias)) x;
4186 EOF
4187
4188 check_cc <<EOF || die "endian test failed"
4189 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4190 EOF
4191 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4192
4193 check_gas() {
4194     log "check_gas using '$as' as AS"
4195     # :vararg is used on aarch64, arm and ppc altivec
4196     check_as <<EOF || return 1
4197 .macro m n, y:vararg=0
4198 \n: .int \y
4199 .endm
4200 m x
4201 EOF
4202     # .altmacro is only used in arm asm
4203     ! enabled arm || check_as <<EOF || return 1
4204 .altmacro
4205 EOF
4206     enable gnu_as
4207     return 0
4208 }
4209
4210 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4211     nogas=:
4212     enabled_any arm aarch64 && nogas=die
4213     enabled_all ppc altivec && nogas=warn
4214     as_noop=-v
4215
4216     case $as_type in
4217         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4218         gcc)  gaspp_as_type=gas ;;
4219         *)    gaspp_as_type=$as_type ;;
4220     esac
4221
4222     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4223
4224     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4225         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4226
4227     if ! check_gas ; then
4228         as=${gas:=$as}
4229         check_gas || \
4230             $nogas "GNU assembler not found, install/update gas-preprocessor"
4231     fi
4232
4233     check_as <<EOF && enable as_func
4234 .func test
4235 .endfunc
4236 EOF
4237 fi
4238
4239 check_inline_asm inline_asm_labels '"1:\n"'
4240
4241 if enabled aarch64; then
4242     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4243     # internal assembler in clang 3.3 does not support this instruction
4244     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4245     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4246
4247     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4248
4249 elif enabled alpha; then
4250
4251     check_cflags -mieee
4252
4253 elif enabled arm; then
4254
4255     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4256     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4257     enabled thumb && check_cflags -mthumb || check_cflags -marm
4258
4259     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4260         enable vfp_args
4261     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4262         enable vfp_args
4263     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4264         case "${cross_prefix:-$cc}" in
4265             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4266             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4267 __asm__ (".eabi_attribute 28, 1");
4268 int main(void) { return 0; }
4269 EOF
4270         esac
4271         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4272     fi
4273
4274     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4275     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4276     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4277     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4278     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4279     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4280
4281     [ $target_os = linux ] || [ $target_os = android ] ||
4282         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4283             $ARCH_EXT_LIST_ARM
4284
4285     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4286
4287     check_as <<EOF && enable as_dn_directive
4288 ra .dn d0.i16
4289 .unreq ra
4290 EOF
4291     check_as <<EOF && enable as_fpu_directive
4292 .fpu neon
4293 EOF
4294
4295     # llvm's integrated assembler supports .object_arch from llvm 3.5
4296     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4297 .object_arch armv4
4298 EOF
4299
4300     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4301
4302 elif enabled mips; then
4303
4304     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4305
4306     # make sure that only an instruction set is enabled
4307     disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4308
4309     if enabled mips64; then
4310         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4311             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4312                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4313     else
4314         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4315             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4316                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4317     fi
4318
4319 elif enabled parisc; then
4320
4321     if enabled gcc; then
4322         case $($cc -dumpversion) in
4323             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4324         esac
4325     fi
4326
4327 elif enabled ppc; then
4328
4329     enable local_aligned_8 local_aligned_16 local_aligned_32
4330
4331     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4332     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4333     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4334     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4335
4336     # AltiVec flags: The FSF version of GCC differs from the Apple version
4337     if enabled altivec; then
4338         check_cflags -maltivec -mabi=altivec &&
4339         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4340         check_cflags -faltivec
4341
4342         # check if our compiler supports Motorola AltiVec C API
4343         check_cc <<EOF || disable altivec
4344 $inc_altivec_h
4345 int main(void) {
4346     vector signed int v1 = (vector signed int) { 0 };
4347     vector signed int v2 = (vector signed int) { 1 };
4348     v1 = vec_add(v1, v2);
4349     return 0;
4350 }
4351 EOF
4352
4353         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4354     fi
4355
4356     if enabled vsx; then
4357         check_cflags -mvsx &&
4358         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4359     fi
4360
4361     if enabled power8; then
4362         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4363     fi
4364
4365 elif enabled x86; then
4366
4367     check_builtin rdtsc    intrin.h   "__rdtsc()"
4368     check_builtin mm_empty mmintrin.h "_mm_empty()"
4369
4370     enable local_aligned_8 local_aligned_16 local_aligned_32
4371
4372     # check whether EBP is available on x86
4373     # As 'i' is stored on the stack, this program will crash
4374     # if the base pointer is used to access it because the
4375     # base pointer is cleared in the inline assembly code.
4376     check_exec_crash <<EOF && enable ebp_available
4377 volatile int i=0;
4378 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4379 return i;
4380 EOF
4381
4382     # check whether EBX is available on x86
4383     check_inline_asm ebx_available '""::"b"(0)' &&
4384         check_inline_asm ebx_available '"":::"%ebx"'
4385
4386     # check whether xmm clobbers are supported
4387     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4388
4389     # check whether binutils is new enough to compile SSSE3/MMXEXT
4390     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4391     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4392
4393     if ! disabled_any asm mmx yasm; then
4394         if check_cmd $yasmexe --version; then
4395             enabled x86_64 && yasm_extra="-m amd64"
4396             yasm_debug="-g dwarf2"
4397         elif check_cmd nasm -v; then
4398             yasmexe=nasm
4399             yasm_debug="-g -F dwarf"
4400             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4401         fi
4402
4403         YASMFLAGS="-f $objformat $yasm_extra"
4404         enabled pic               && append YASMFLAGS "-DPIC"
4405         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4406         case "$objformat" in
4407             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4408         esac
4409
4410         check_yasm "movbe ecx, [5]" && enable yasm ||
4411             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4412         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4413         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4414         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4415         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4416         check_yasm "CPU amdnop" || disable cpunop
4417     fi
4418
4419     case "$cpu" in
4420         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4421             disable fast_clz
4422         ;;
4423     esac
4424
4425 fi
4426
4427 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4428
4429 check_ldflags -Wl,--as-needed
4430
4431 if check_func dlopen; then
4432     ldl=
4433 elif check_func dlopen -ldl; then
4434     ldl=-ldl
4435 fi
4436
4437 if ! disabled network; then
4438     check_func getaddrinfo $network_extralibs
4439     check_func inet_aton $network_extralibs
4440
4441     check_type netdb.h "struct addrinfo"
4442     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4443     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4444     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4445     check_type poll.h "struct pollfd"
4446     check_type netinet/sctp.h "struct sctp_event_subscribe"
4447     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4448     check_type netinet/in.h "struct sockaddr_in6"
4449     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4450     check_type "sys/types.h sys/socket.h" socklen_t
4451
4452     # Prefer arpa/inet.h over winsock2
4453     if check_header arpa/inet.h ; then
4454         check_func closesocket
4455     elif check_header winsock2.h ; then
4456         check_func_headers winsock2.h closesocket -lws2 &&
4457             network_extralibs="-lws2" ||
4458         { check_func_headers winsock2.h closesocket -lws2_32 &&
4459             network_extralibs="-lws2_32"; } || disable winsock2_h network
4460         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4461
4462         check_type ws2tcpip.h socklen_t
4463         check_type ws2tcpip.h "struct addrinfo"
4464         check_type ws2tcpip.h "struct group_source_req"
4465         check_type ws2tcpip.h "struct ip_mreq_source"
4466         check_type ws2tcpip.h "struct ipv6_mreq"
4467         check_type winsock2.h "struct pollfd"
4468         check_struct winsock2.h "struct sockaddr" sa_len
4469         check_type ws2tcpip.h "struct sockaddr_in6"
4470         check_type ws2tcpip.h "struct sockaddr_storage"
4471     else
4472         disable network
4473     fi
4474 fi
4475
4476 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4477 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4478 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4479 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4480
4481 case "$custom_allocator" in
4482     jemalloc)
4483         # jemalloc by default does not use a prefix
4484         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4485     ;;
4486     tcmalloc)
4487         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
4488         malloc_prefix=tc_
4489     ;;
4490 esac
4491
4492 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4493 check_func  ${malloc_prefix}memalign            && enable memalign
4494 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4495
4496 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4497     check_func_headers time.h clock_gettime ||
4498         { check_lib time.h clock_gettime -lrt && LIBRT="-lrt"; }
4499
4500 check_func  fcntl
4501 check_func  fork
4502 check_func  gethrtime
4503 check_func  getopt
4504 check_func  getrusage
4505 check_func  gettimeofday
4506 check_func  gmtime_r
4507 check_func  isatty
4508 check_func  localtime_r
4509 check_func  mach_absolute_time
4510 check_func  mkstemp
4511 check_func  mmap
4512 check_func  mprotect
4513 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4514 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt; }
4515 check_func  sched_getaffinity
4516 check_func  setrlimit
4517 check_func  strerror_r
4518 check_func  sysconf
4519 check_func  sysctl
4520 check_func  usleep
4521
4522 check_func_headers io.h setmode
4523 check_func_headers stdlib.h getenv
4524
4525 check_func_headers windows.h CoTaskMemFree -lole32
4526 check_func_headers windows.h GetProcessAffinityMask
4527 check_func_headers windows.h GetProcessTimes
4528 check_func_headers windows.h GetSystemTimeAsFileTime
4529 check_func_headers windows.h LoadLibrary
4530 check_func_headers windows.h MapViewOfFile
4531 check_func_headers windows.h SetConsoleTextAttribute
4532 check_func_headers windows.h Sleep
4533 check_func_headers windows.h VirtualAlloc
4534 check_struct windows.h "CONDITION_VARIABLE" Ptr
4535
4536 check_header direct.h
4537 check_header dlfcn.h
4538 check_header d3d11.h
4539 check_header dxva.h
4540 check_header dxva2api.h
4541 check_header io.h
4542 check_header mach/mach_time.h
4543 check_header malloc.h
4544 check_header poll.h
4545 check_header sys/mman.h
4546 check_header sys/param.h
4547 check_header sys/resource.h
4548 check_header sys/select.h
4549 check_header sys/time.h
4550 check_header sys/un.h
4551 check_header unistd.h
4552 check_header valgrind/valgrind.h
4553 check_header vdpau/vdpau.h
4554 check_header vdpau/vdpau_x11.h
4555 check_header VideoDecodeAcceleration/VDADecoder.h
4556 check_header windows.h
4557 check_header X11/extensions/XvMClib.h
4558
4559 # it seems there are versions of clang in some distros that try to use the
4560 # gcc headers, which explodes for stdatomic
4561 # so we also check that atomics actually work here
4562 check_builtin stdatomic_h stdatomic.h "atomic_int foo; atomic_store(&foo, 0)"
4563
4564 check_lib "windows.h shellapi.h" CommandLineToArgvW   -lshell32
4565 check_lib "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
4566 check_lib "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
4567
4568 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4569
4570 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4571 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4572 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4573
4574 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
4575 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
4576 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
4577 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
4578 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
4579
4580 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
4581
4582 if ! disabled w32threads && ! enabled pthreads; then
4583     check_func_headers "windows.h process.h" _beginthreadex &&
4584         enable w32threads || disable w32threads
4585 fi
4586
4587 # check for some common methods of building with pthread support
4588 # do this before the optional library checks as some of them require pthreads
4589 if ! disabled pthreads && ! enabled w32threads; then
4590     enable pthreads
4591     if check_func pthread_join -pthread; then
4592         add_cflags -pthread
4593         add_extralibs -pthread
4594     elif check_func pthread_join -pthreads; then
4595         add_cflags -pthreads
4596         add_extralibs -pthreads
4597     elif check_func pthread_join -lpthreadGC2; then
4598         add_extralibs -lpthreadGC2
4599     elif check_lib pthread.h pthread_join -lpthread; then
4600         :
4601     elif ! check_func pthread_join; then
4602         disable pthreads
4603     fi
4604 fi
4605
4606 enabled pthreads &&
4607     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
4608
4609 disabled  zlib || check_lib  zlib.h      zlibVersion -lz   || disable  zlib
4610 disabled bzlib || check_lib bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4611
4612 check_lib math.h sin -lm && LIBM="-lm"
4613
4614 atan2f_args=2
4615 ldexpf_args=2
4616 powf_args=2
4617
4618 for func in $MATH_FUNCS; do
4619     eval check_mathfunc $func \${${func}_args:-1} $LIBM
4620 done
4621
4622 # these are off by default, so fail if requested and not available
4623 enabled avisynth          && { check_header avisynth/avisynth_c.h || die "ERROR: avisynth/avisynth_c.h header not found"; }
4624 enabled avxsynth          && require avxsynth "avxsynth/avxsynth_c.h dlfcn.h" dlopen -ldl
4625 enabled cuda              && check_lib cuda.h cuInit -lcuda
4626 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4627 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4628 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4629 enabled libdc1394         && require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new
4630 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4631 enabled libfaac           && require libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4632 enabled libfdk_aac        && require_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4633 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4634 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4635 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4636                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4637                                done || die "ERROR: libgsm not found"; }
4638 enabled libhdcd           && require_pkg_config libhdcd "hdcd/hdcd_simple.h" hdcd_new
4639 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4640 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
4641 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
4642 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4643 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
4644 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4645 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4646 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4647 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
4648 enabled libopenjpeg       && { check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4649                                require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; }
4650 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4651 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4652 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4653 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4654 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
4655 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
4656 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4657 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4658 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4659 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4660 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4661 enabled libvpx            && require_pkg_config "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version && {
4662     enabled libvpx_vp8_decoder && {
4663         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
4664             disable libvpx_vp8_decoder;
4665     }
4666     enabled libvpx_vp8_encoder && {
4667         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
4668             disable libvpx_vp8_encoder;
4669     }
4670     enabled libvpx_vp9_decoder && {
4671         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
4672             disable libvpx_vp9_decoder;
4673     }
4674     enabled libvpx_vp9_encoder && {
4675         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
4676             disable libvpx_vp9_encoder;
4677     }
4678     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
4679         die "libvpx enabled but no supported decoders found"
4680     fi
4681 }
4682 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4683 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4684 enabled libx264           && require_pkg_config x264 "stdint.h x264.h" x264_encoder_encode &&
4685                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4686                                die "ERROR: libx264 version must be >= 0.118."; } &&
4687                              { check_cpp_condition x264.h "X264_MPEG2" &&
4688                                enable libx262; }
4689 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
4690                              { check_cpp_condition x265.h "X265_BUILD >= 57" ||
4691                                die "ERROR: libx265 version must be >= 57."; }
4692 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
4693 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4694 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4695                                { ! enabled cross_compile &&
4696                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
4697                                  add_ldflags -L/opt/vc/lib/ &&
4698                                  check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
4699                                die "ERROR: mmal not found" &&
4700                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
4701 enabled omx_rpi           && { check_header OMX_Core.h ||
4702                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
4703                                die "ERROR: OpenMAX IL headers not found"; }
4704 enabled omx               && { check_header OMX_Core.h || 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 enabled gnutls            && check_lib gmp.h mpz_export -lgmp && enable gmp
4714
4715 if enabled nvenc; then
4716     check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."
4717     check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6" ||
4718         die "ERROR: NVENC API version 5 or older is not supported"
4719 fi
4720
4721 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4722     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4723     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4724     enable sdl
4725 fi
4726
4727 ! disabled pod2man   && check_cmd pod2man --help     && enable pod2man   || disable pod2man
4728 ! disabled texi2html && check_cmd texi2html -version && enable texi2html || disable texi2html
4729
4730 check_header linux/fb.h
4731 check_header linux/videodev2.h
4732 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4733
4734 check_header AVFoundation/AVFoundation.h
4735
4736 check_header sys/videoio.h
4737
4738 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4739 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4740 # w32api 3.12 had it defined wrong
4741 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4742
4743 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4744 { check_header dev/bktr/ioctl_meteor.h &&
4745   check_header dev/bktr/ioctl_bt848.h; } ||
4746 { check_header machine/ioctl_meteor.h &&
4747   check_header machine/ioctl_bt848.h; } ||
4748 { check_header dev/video/meteor/ioctl_meteor.h &&
4749   check_header dev/video/bktr/ioctl_bt848.h; } ||
4750 check_header dev/ic/bt8xx.h
4751
4752 check_header sndio.h
4753 check_header sys/soundcard.h
4754 check_header soundcard.h
4755
4756 enabled_any alsa_indev alsa_outdev &&
4757     check_lib alsa/asoundlib.h snd_pcm_htimestamp -lasound
4758
4759 enabled jack_indev && check_lib jack/jack.h jack_client_open -ljack &&
4760     check_func jack_port_get_latency_range -ljack
4761
4762 enabled_any sndio_indev sndio_outdev && check_lib sndio.h sio_open -lsndio
4763
4764 if enabled libcdio; then
4765     check_lib "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4766     check_lib "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4767     die "ERROR: No usable libcdio/cdparanoia found"
4768 fi
4769
4770 if enabled libxcb; then
4771     check_pkg_config xcb-shape xcb/shape.h xcb_shape_rectangles || {
4772         enabled libxcb && die "ERROR: libxcb not found";
4773     } && enable libxcb
4774
4775     disabled libxcb_shm ||
4776         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
4777             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
4778         } && check_header sys/shm.h && enable libxcb_shm
4779
4780     disabled libxcb_xfixes ||
4781         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
4782             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
4783         } && enable libxcb_xfixes
4784
4785     add_cflags "$xcb_shape_cflags $xcb_shm_cflags $xcb_xfixes_cflags"
4786     add_extralibs "$xcb_shape_libs $xcb_shm_libs $xcb_xfixes_libs"
4787 fi
4788
4789 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4790
4791 enabled vaapi &&
4792     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
4793     disable vaapi
4794
4795 enabled vaapi &&
4796     check_lib "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
4797     enable vaapi_drm
4798
4799 enabled vaapi &&
4800     check_lib "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11 &&
4801     enable vaapi_x11
4802
4803 enabled vdpau &&
4804     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4805     disable vdpau
4806
4807 enabled vdpau &&
4808     check_lib "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11 &&
4809     enable vdpau_x11
4810
4811 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4812