configure: Integrate X11 checks into vaapi/vdpau checks
[libav.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken Libav."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --quiet                  Suppress showing informative output
67   --list-decoders          show all available decoders
68   --list-encoders          show all available encoders
69   --list-hwaccels          show all available hardware accelerators
70   --list-demuxers          show all available demuxers
71   --list-muxers            show all available muxers
72   --list-parsers           show all available parsers
73   --list-protocols         show all available protocols
74   --list-bsfs              show all available bitstream filters
75   --list-indevs            show all available input devices
76   --list-outdevs           show all available output devices
77   --list-filters           show all available filters
78
79 Standard options:
80   --logfile=FILE           log tests and output to FILE [config.log]
81   --disable-logging        do not log configure debug information
82   --prefix=PREFIX          install in PREFIX [$prefix_default]
83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
84   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
86   --libdir=DIR             install libs in DIR [PREFIX/lib]
87   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
88   --incdir=DIR             install includes in DIR [PREFIX/include]
89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
90   --enable-rpath           use rpath when linking programs (USE WITH CARE)
91
92 Licensing options:
93   --enable-gpl             allow use of GPL code, the resulting libs
94                            and binaries will be under GPL [no]
95   --enable-version3        upgrade (L)GPL to version 3 [no]
96   --enable-nonfree         allow use of nonfree code, the resulting libs
97                            and binaries will be unredistributable [no]
98
99 Configuration options:
100   --disable-static         do not build static libraries [no]
101   --enable-shared          build shared libraries [no]
102   --enable-small           optimize for size instead of speed
103   --enable-runtime-cpudetect detect CPU capabilities at runtime (bigger binary)
104   --enable-gray            enable full grayscale support (slower color)
105   --disable-swscale-alpha  disable alpha channel support in swscale
106   --disable-all            disable building components, libraries and programs
107
108 Program options:
109   --disable-programs       do not build command line programs
110   --disable-avconv         disable avconv build
111   --disable-avplay         disable avplay build
112   --disable-avprobe        disable avprobe build
113   --disable-avserver       deprecated, does nothing
114
115 Component options:
116   --disable-doc            do not build documentation
117   --disable-pod2man        do not build manual pages
118   --disable-texi2html      do not build HTML documentation
119   --disable-avdevice       disable libavdevice build
120   --disable-avcodec        disable libavcodec build
121   --disable-avformat       disable libavformat build
122   --disable-avutil         disable libavutil build
123   --disable-swscale        disable libswscale build
124   --disable-avfilter       disable video filter support [no]
125   --disable-avresample     disable libavresample build [no]
126   --disable-pthreads       disable pthreads [auto]
127   --disable-w32threads     disable Win32 threads [auto]
128   --disable-network        disable network support [no]
129   --disable-dct            disable DCT code
130   --disable-error-resilience disable error resilience code
131   --disable-lsp            disable LSP code
132   --disable-lzo            disable LZO decoder code
133   --disable-mdct           disable MDCT code
134   --disable-rdft           disable RDFT code
135   --disable-fft            disable FFT code
136   --disable-faan           disable floating point AAN (I)DCT code
137
138 Individual component options:
139   --disable-everything     disable all components listed below
140   --disable-encoder=NAME   disable encoder NAME
141   --enable-encoder=NAME    enable encoder NAME
142   --disable-encoders       disable all encoders
143   --disable-decoder=NAME   disable decoder NAME
144   --enable-decoder=NAME    enable decoder NAME
145   --disable-decoders       disable all decoders
146   --disable-hwaccel=NAME   disable hwaccel NAME
147   --enable-hwaccel=NAME    enable hwaccel NAME
148   --disable-hwaccels       disable all hwaccels
149   --disable-muxer=NAME     disable muxer NAME
150   --enable-muxer=NAME      enable muxer NAME
151   --disable-muxers         disable all muxers
152   --disable-demuxer=NAME   disable demuxer NAME
153   --enable-demuxer=NAME    enable demuxer NAME
154   --disable-demuxers       disable all demuxers
155   --enable-parser=NAME     enable parser NAME
156   --disable-parser=NAME    disable parser NAME
157   --disable-parsers        disable all parsers
158   --enable-bsf=NAME        enable bitstream filter NAME
159   --disable-bsf=NAME       disable bitstream filter NAME
160   --disable-bsfs           disable all bitstream filters
161   --enable-protocol=NAME   enable protocol NAME
162   --disable-protocol=NAME  disable protocol NAME
163   --disable-protocols      disable all protocols
164   --enable-indev=NAME      enable input device NAME
165   --disable-indev=NAME     disable input device NAME
166   --disable-indevs         disable input devices
167   --enable-outdev=NAME     enable output device NAME
168   --disable-outdev=NAME    disable output device NAME
169   --disable-outdevs        disable output devices
170   --disable-devices        disable all devices
171   --enable-filter=NAME     enable filter NAME
172   --disable-filter=NAME    disable filter NAME
173   --disable-filters        disable all filters
174
175 External library support:
176
177   Using any of the following switches will allow Libav to link to the
178   corresponding external library. All the components depending on that library
179   will become enabled, if all their other dependencies are met and they are not
180   explicitly disabled. E.g. --enable-libwavpack will enable linking to
181   libwavpack and allow the libwavpack encoder to be built, unless it is
182   specifically disabled with --disable-encoder=libwavpack.
183
184   Note that only the system libraries are auto-detected. All the other external
185   libraries must be explicitly enabled.
186
187   Also note that the following help text describes the purpose of the libraries
188   themselves, not all their features will necessarily be usable by Libav.
189
190   --enable-avisynth          video frameserver
191   --enable-bzlib             bzip2 compression [autodetect]
192   --enable-frei0r            video filtering plugins
193   --enable-gnutls            crypto
194   --enable-libbs2b           Bauer stereophonic-to-binaural DSP
195   --enable-libcdio           audio CD input
196   --enable-libdc1394         IEEE 1394/Firewire camera input
197   --enable-libdcadec         DCA audio decoding
198   --enable-libfaac           AAC audio encoding
199   --enable-libfdk-aac        AAC audio encoding/decoding
200   --enable-libfontconfig     font configuration and management
201   --enable-libfreetype       font rendering
202   --enable-libgsm            GSM audio encoding/decoding
203   --enable-libhdcd           HDCD decoding filter
204   --enable-libilbc           ILBC audio encoding/decoding
205   --enable-libkvazaar        HEVC video encoding
206   --enable-libmp3lame        MP3 audio encoding
207   --enable-libopencore-amrnb AMR-NB audio encoding/decoding
208   --enable-libopencore-amrwb AMR-WB audio decoding
209   --enable-libopencv         computer vision
210   --enable-libopenh264       H.264 video encoding/decoding
211   --enable-libopenjpeg       JPEG 2000 image encoding/decoding
212   --enable-libopus           Opus audio encoding/decoding
213   --enable-libpulse          Pulseaudio sound server
214   --enable-librtmp           RTMP streaming
215   --enable-libschroedinger   Dirac video encoding/decoding
216   --enable-libsnappy         snappy compression
217   --enable-libspeex          Speex audio encoding/decoding
218   --enable-libtheora         Theora video encoding/decoding
219   --enable-libtwolame        MP2 audio encoding
220   --enable-libvo-aacenc      AAC audio encoding
221   --enable-libvo-amrwbenc    AMR-WB audio encoding
222   --enable-libvorbis         Vorbis audio encoding/decoding
223   --enable-libvpx            VP* video encoding/decoding
224   --enable-libwavpack        Wavpack audio encoding/decoding
225   --enable-libwebp           WebP image encoding/decoding
226   --enable-libx264           H.264 video encoding
227   --enable-libx265           HEVC video encoding
228   --enable-libxavs           Chinese AVS video encoding
229   --enable-libxcb            X window system protocol communication
230   --enable-libxcb-shm        X11 shm communication [auto]
231   --enable-libxcb-xfixes     X11 mouse rendering [auto]
232   --enable-libxvid           MPEG-4 ASP video encoding
233   --enable-openssl           crypto
234   --enable-zlib              compression [autodetect]
235
236   The following libraries provide various hardware acceleration features:
237   --enable-cuda    Nvidia CUDA (dynamically linked)
238   --enable-d3d11va Microsoft Direct3D 11 video acceleration [auto]
239   --enable-dxva2   Microsoft DirectX 9 video acceleration [auto]
240   --enable-libmfx  Intel MediaSDK (AKA Quick Sync Video)
241   --enable-libnpp  Nvidia CUDA processing
242   --enable-mmal    Broadcom Multi-Media Abstraction Layer (Raspberry Pi)
243   --enable-nvenc   Nvidia video encoding
244   --enable-omx     OpenMAX IL
245   --enable-omx-rpi OpenMAX IL for Raspberry Pi
246   --enable-vaapi   Video Acceleration API (mainly Unix/Intel)
247   --enable-vda     Apple Video Decode Acceleration [auto]
248   --enable-vdpau   Nvidia Video Decode and Presentation API for Unix [auto]
249
250 Toolchain options:
251   --arch=ARCH              select architecture [$arch]
252   --cpu=CPU                select the minimum required CPU (affects
253                            instruction selection, may crash on older CPUs)
254   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
255   --enable-cross-compile   assume a cross-compiler is used
256   --sysroot=PATH           root of cross-build tree
257   --sysinclude=PATH        location of cross-build system headers
258   --target-os=OS           compiler targets OS [$target_os]
259   --target-exec=CMD        command to run executables on target
260   --target-path=DIR        path to view of build directory on target
261   --target-samples=DIR     path to samples directory on target
262   --toolchain=NAME         set tool defaults according to NAME
263   --nm=NM                  use nm tool
264   --ar=AR                  use archive tool AR [$ar_default]
265   --as=AS                  use assembler AS [$as_default]
266   --cc=CC                  use C compiler CC [$cc_default]
267   --objcc=OCC              use ObjC compiler OCC [$cc_default]
268   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
269   --ld=LD                  use linker LD
270   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
271   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
272   --host-cc=HOSTCC         use host C compiler HOSTCC
273   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
274   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
275   --host-ld=HOSTLD         use host linker HOSTLD
276   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
277   --host-libs=HLIBS        use libs HLIBS when linking for host
278   --host-os=OS             compiler host OS [$target_os]
279   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
280   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
281   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
282   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
283   --extra-libs=ELIBS       add ELIBS [$ELIBS]
284   --extra-version=STRING   version string suffix []
285   --optflags=OPTFLAGS      override optimization-related compiler flags
286   --build-suffix=SUFFIX    library name suffix []
287   --enable-pic             build position-independent code
288   --enable-thumb           compile for Thumb instruction set
289   --enable-lto             use link-time optimization
290   --env="ENV=override"     override the environment variables
291
292 Advanced options (experts only):
293   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
294   --custom-allocator=NAME  use a supported custom allocator
295   --disable-symver         disable symbol versioning
296   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
297   --disable-safe-bitstream-reader
298                            disable buffer boundary checking in bitreaders
299                            (faster, but may crash)
300   --enable-sram            allow use of on-chip SRAM
301
302 Optimization options (experts only):
303   --disable-asm            disable all assembly optimizations
304   --disable-altivec        disable AltiVec optimizations
305   --disable-vsx            disable VSX optimizations
306   --disable-power8         disable POWER8 optimizations
307   --disable-amd3dnow       disable 3DNow! optimizations
308   --disable-amd3dnowext    disable 3DNow! extended optimizations
309   --disable-mmx            disable MMX optimizations
310   --disable-mmxext         disable MMXEXT optimizations
311   --disable-sse            disable SSE optimizations
312   --disable-sse2           disable SSE2 optimizations
313   --disable-sse3           disable SSE3 optimizations
314   --disable-ssse3          disable SSSE3 optimizations
315   --disable-sse4           disable SSE4 optimizations
316   --disable-sse42          disable SSE4.2 optimizations
317   --disable-avx            disable AVX optimizations
318   --disable-xop            disable XOP optimizations
319   --disable-fma3           disable FMA3 optimizations
320   --disable-fma4           disable FMA4 optimizations
321   --disable-avx2           disable AVX2 optimizations
322   --disable-armv5te        disable armv5te optimizations
323   --disable-armv6          disable armv6 optimizations
324   --disable-armv6t2        disable armv6t2 optimizations
325   --disable-vfp            disable VFP optimizations
326   --disable-neon           disable NEON optimizations
327   --disable-inline-asm     disable use of inline assembly
328   --disable-yasm           disable use of nasm/yasm assembly
329
330 Developer options (useful when working on Libav itself):
331   --disable-debug          disable debugging symbols
332   --enable-debug=LEVEL     set the debug level [$debuglevel]
333   --disable-optimizations  disable compiler optimizations
334   --enable-extra-warnings  enable more compiler warnings
335   --samples=PATH           location of test samples for FATE, if not set use
336                            \$LIBAV_SAMPLES at make invocation time.
337   --enable-neon-clobber-test check NEON registers for clobbering (should be
338                            used only for debugging purposes)
339   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
340                            should be used only for debugging purposes)
341   --enable-random          randomly enable/disable components
342   --disable-random
343   --enable-random=LIST     randomly enable/disable specific components or
344   --disable-random=LIST    component groups. LIST is a comma-separated list
345                            of NAME[:PROB] entries where NAME is a component
346                            (group) and PROB the probability associated with
347                            NAME (default 0.5).
348   --random-seed=VALUE      seed value for --enable/disable-random
349   --disable-valgrind-backtrace do not print a backtrace under Valgrind
350                            (only applies to --disable-optimizations builds)
351
352 NOTE: Object files are built at the place where configure is launched.
353 EOF
354   exit 0
355 }
356
357 quotes='""'
358
359 log(){
360     echo "$@" >> $logfile
361 }
362
363 log_file(){
364     log BEGIN $1
365     i=1
366     while read line; do
367         printf '%5s   %s\n' "${i}" "${line}"
368         i=$(($i+1))
369     done < $1 >> $logfile
370     log END $1
371 }
372
373 echolog(){
374     log "$@"
375     echo "$@"
376 }
377
378 warn(){
379     log "WARNING: $*"
380     WARNINGS="${WARNINGS}WARNING: $*\n"
381 }
382
383 die(){
384     echolog "$@"
385     cat <<EOF
386
387 If you think configure made a mistake, make sure you are using the latest
388 version from Git.  If the latest version fails, report the problem to the
389 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
390 EOF
391     if disabled logging; then
392         cat <<EOF
393 Rerun configure with logging enabled (do not use --disable-logging), and
394 include the log this produces with your report.
395 EOF
396     else
397         cat <<EOF
398 Include the log file "$logfile" produced by configure as this will help
399 solving the problem.
400 EOF
401     fi
402     exit 1
403 }
404
405 # Avoid locale weirdness, besides we really just want to translate ASCII.
406 toupper(){
407     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
408 }
409
410 tolower(){
411     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
412 }
413
414 c_escape(){
415     echo "$*" | sed 's/["\\]/\\\0/g'
416 }
417
418 sh_quote(){
419     v=$(echo "$1" | sed "s/'/'\\\\''/g")
420     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
421     echo "$v"
422 }
423
424 cleanws(){
425     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
426 }
427
428 filter(){
429     pat=$1
430     shift
431     for v; do
432         eval "case $v in $pat) 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_asflags(){
720     append ASFLAGS $($asflags_filter "$@")
721 }
722
723 add_objcflags(){
724     append OBJCFLAGS $($objcflags_filter "$@")
725 }
726
727 add_ldflags(){
728     append LDFLAGS $($ldflags_filter "$@")
729 }
730
731 add_ldexeflags(){
732     append LDEXEFLAGS $($ldflags_filter "$@")
733 }
734
735 add_stripflags(){
736     append STRIPFLAGS "$@"
737 }
738
739 add_extralibs(){
740     prepend extralibs $($ldflags_filter "$@")
741 }
742
743 add_host_cppflags(){
744     append host_cppflags "$@"
745 }
746
747 add_host_cflags(){
748     append host_cflags $($host_cflags_filter "$@")
749 }
750
751 add_host_ldflags(){
752     append host_ldflags $($host_ldflags_filter "$@")
753 }
754
755 add_compat(){
756     append compat_objs $1
757     shift
758     map 'add_cppflags -D$v' "$@"
759 }
760
761 check_cmd(){
762     log "$@"
763     "$@" >> $logfile 2>&1
764 }
765
766 cc_o(){
767     eval printf '%s\\n' $CC_O
768 }
769
770 cc_e(){
771     eval printf '%s\\n' $CC_E
772 }
773
774 check_cc(){
775     log check_cc "$@"
776     cat > $TMPC
777     log_file $TMPC
778     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
779 }
780
781 check_objcc(){
782     log check_objcc "$@"
783     cat > $TMPC
784     log_file $TMPC
785     check_cmd $objcc $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPC
786 }
787
788 check_cpp(){
789     log check_cpp "$@"
790     cat > $TMPC
791     log_file $TMPC
792     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
793 }
794
795 as_o(){
796     eval printf '%s\\n' $AS_O
797 }
798
799 check_as(){
800     log check_as "$@"
801     cat > $TMPS
802     log_file $TMPS
803     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
804 }
805
806 check_inline_asm(){
807     log check_inline_asm "$@"
808     name="$1"
809     code="$2"
810     shift 2
811     disable $name
812     check_cc "$@" <<EOF && enable $name
813 void foo(void){ __asm__ volatile($code); }
814 EOF
815 }
816
817 check_insn(){
818     log check_insn "$@"
819     check_inline_asm ${1}_inline "\"$2\""
820     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
821 }
822
823 check_yasm(){
824     log check_yasm "$@"
825     echo "$1" > $TMPS
826     log_file $TMPS
827     shift 1
828     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
829 }
830
831 ld_o(){
832     eval printf '%s\\n' $LD_O
833 }
834
835 check_ld(){
836     log check_ld "$@"
837     flags=$(filter_out '-l*' "$@")
838     libs=$(filter '-l*' "$@")
839     check_cc $($cflags_filter $flags) || return
840     flags=$($ldflags_filter $flags)
841     libs=$($ldflags_filter $libs)
842     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
843 }
844
845 print_include(){
846     hdr=$1
847     test "${hdr%.h}" = "${hdr}" &&
848         echo "#include $hdr"    ||
849         echo "#include <$hdr>"
850 }
851
852 check_code(){
853     log check_code "$@"
854     check=$1
855     headers=$2
856     code=$3
857     shift 3
858     {
859         for hdr in $headers; do
860             print_include $hdr
861         done
862         echo "int main(void) { $code; return 0; }"
863     } | check_$check "$@"
864 }
865
866 check_cppflags(){
867     log check_cppflags "$@"
868     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
869 int x;
870 EOF
871 }
872
873 test_cflags(){
874     log test_cflags "$@"
875     set -- $($cflags_filter "$@")
876     check_cc "$@" <<EOF
877 int x;
878 EOF
879 }
880
881 check_cflags(){
882     log check_cflags "$@"
883     test_cflags "$@" && add_cflags "$@"
884 }
885
886 test_objcflags(){
887     log test_objcflags "$@"
888     set -- $($objcflags_filter "$@")
889     check_objcc "$@" <<EOF
890 int x;
891 EOF
892 }
893
894 check_objcflags(){
895     log check_objcflags "$@"
896     test_objcflags "$@" && add_objcflags "$@"
897 }
898
899 test_ldflags(){
900     log test_ldflags "$@"
901     check_ld "$@" <<EOF
902 int main(void){ return 0; }
903 EOF
904 }
905
906 check_ldflags(){
907     log check_ldflags "$@"
908     test_ldflags "$@" && add_ldflags "$@"
909 }
910
911 test_stripflags(){
912     log test_stripflags "$@"
913     # call check_cc to get a fresh TMPO
914     check_cc <<EOF
915 int main(void) { return 0; }
916 EOF
917     check_cmd $strip $STRIPFLAGS "$@" $TMPO
918 }
919
920 check_stripflags(){
921     log check_stripflags "$@"
922     test_stripflags "$@" && add_stripflags "$@"
923 }
924
925 check_header(){
926     log check_header "$@"
927     header=$1
928     shift
929     disable_safe $header
930     check_cpp "$@" <<EOF && enable_safe $header
931 #include <$header>
932 int x;
933 EOF
934 }
935
936 check_func(){
937     log check_func "$@"
938     func=$1
939     shift
940     disable $func
941     check_ld "$@" <<EOF && enable $func
942 extern int $func();
943 int main(void){ $func(); }
944 EOF
945 }
946
947 check_mathfunc(){
948     log check_mathfunc "$@"
949     func=$1
950     narg=$2
951     shift 2
952     test $narg = 2 && args="f, g" || args="f"
953     disable $func
954     check_ld "$@" <<EOF && enable $func
955 #include <math.h>
956 float foo(float f, float g) { return $func($args); }
957 int main(void){ return 0; }
958 EOF
959 }
960
961 check_func_headers(){
962     log check_func_headers "$@"
963     headers=$1
964     funcs=$2
965     shift 2
966     {
967         for hdr in $headers; do
968             print_include $hdr
969         done
970         for func in $funcs; do
971             echo "long check_$func(void) { return (long) $func; }"
972         done
973         echo "int main(void) { return 0; }"
974     } | check_ld "$@" && enable $funcs && enable_safe $headers
975 }
976
977 check_cpp_condition(){
978     log check_cpp_condition "$@"
979     header=$1
980     condition=$2
981     shift 2
982     check_cpp "$@" <<EOF
983 #include <$header>
984 #if !($condition)
985 #error "unsatisfied condition: $condition"
986 #endif
987 EOF
988 }
989
990 test_cflags_cpp(){
991     log test_cflags_cpp "$@"
992     flags=$1
993     condition=$2
994     shift 2
995     set -- $($cflags_filter "$flags")
996     check_cpp "$@" <<EOF
997 #if !($condition)
998 #error "unsatisfied condition: $condition"
999 #endif
1000 EOF
1001 }
1002
1003 check_lib(){
1004     log check_lib "$@"
1005     headers="$1"
1006     funcs="$2"
1007     shift 2
1008     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1009 }
1010
1011 check_pkg_config(){
1012     log check_pkg_config "$@"
1013     pkg="$1"
1014     headers="$2"
1015     funcs="$3"
1016     shift 3
1017     check_cmd $pkg_config --exists --print-errors $pkg || return
1018     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1019     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1020     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1021         set_safe "${pkg}_cflags" $pkg_cflags   &&
1022         set_safe "${pkg}_libs"   $pkg_libs
1023 }
1024
1025 check_exec(){
1026     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1027 }
1028
1029 check_exec_crash(){
1030     log check_exec_crash "$@"
1031     code=$(cat)
1032
1033     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1034     # are safe but may not be available everywhere.  Thus we use
1035     # raise(SIGTERM) instead.  The check is run in a subshell so we
1036     # can redirect the "Terminated" message from the shell.  SIGBUS
1037     # is not defined by standard C so it is used conditionally.
1038
1039     (check_exec "$@") >> $logfile 2>&1 <<EOF
1040 #include <signal.h>
1041 static void sighandler(int sig){
1042     raise(SIGTERM);
1043 }
1044 int foo(void){
1045     $code
1046 }
1047 int (*func_ptr)(void) = foo;
1048 int main(void){
1049     signal(SIGILL, sighandler);
1050     signal(SIGFPE, sighandler);
1051     signal(SIGSEGV, sighandler);
1052 #ifdef SIGBUS
1053     signal(SIGBUS, sighandler);
1054 #endif
1055     return func_ptr();
1056 }
1057 EOF
1058 }
1059
1060 check_type(){
1061     log check_type "$@"
1062     headers=$1
1063     type=$2
1064     shift 2
1065     disable_safe "$type"
1066     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1067 }
1068
1069 check_struct(){
1070     log check_struct "$@"
1071     headers=$1
1072     struct=$2
1073     member=$3
1074     shift 3
1075     disable_safe "${struct}_${member}"
1076     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1077         enable_safe "${struct}_${member}"
1078 }
1079
1080 check_builtin(){
1081     log check_builtin "$@"
1082     name=$1
1083     headers=$2
1084     builtin=$3
1085     shift 3
1086     disable "$name"
1087     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1088 }
1089
1090 check_compile_assert(){
1091     log check_compile_assert "$@"
1092     name=$1
1093     headers=$2
1094     condition=$3
1095     shift 3
1096     disable "$name"
1097     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1098 }
1099
1100 require(){
1101     log require "$@"
1102     name="$1"
1103     headers="$2"
1104     func="$3"
1105     shift 3
1106     check_lib "$headers" $func "$@" || die "ERROR: $name not found"
1107 }
1108
1109 require_pkg_config(){
1110     log require_pkg_config "$@"
1111     pkg="$1"
1112     check_pkg_config "$@" || die "ERROR: $pkg not found"
1113     add_cflags    $(get_safe "${pkg}_cflags")
1114     add_extralibs $(get_safe "${pkg}_libs")
1115 }
1116
1117 hostcc_e(){
1118     eval printf '%s\\n' $HOSTCC_E
1119 }
1120
1121 hostcc_o(){
1122     eval printf '%s\\n' $HOSTCC_O
1123 }
1124
1125 check_host_cc(){
1126     log check_host_cc "$@"
1127     cat > $TMPC
1128     log_file $TMPC
1129     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1130 }
1131
1132 check_host_cpp(){
1133     log check_host_cpp "$@"
1134     cat > $TMPC
1135     log_file $TMPC
1136     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1137 }
1138
1139 check_host_cppflags(){
1140     log check_host_cppflags "$@"
1141     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1142 int x;
1143 EOF
1144 }
1145
1146 check_host_cflags(){
1147     log check_host_cflags "$@"
1148     set -- $($host_cflags_filter "$@")
1149     check_host_cc "$@" <<EOF && append host_cflags "$@"
1150 int x;
1151 EOF
1152 }
1153
1154 check_host_cpp_condition(){
1155     log check_host_cpp_condition "$@"
1156     header=$1
1157     condition=$2
1158     shift 2
1159     check_host_cpp "$@" <<EOF
1160 #include <$header>
1161 #if !($condition)
1162 #error "unsatisfied condition: $condition"
1163 #endif
1164 EOF
1165 }
1166
1167 apply(){
1168     file=$1
1169     shift
1170     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1171 }
1172
1173 cp_if_changed(){
1174     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1175     mkdir -p "$(dirname $2)"
1176     $cp_f "$1" "$2"
1177 }
1178
1179 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1180 # system-dependent things.
1181
1182 AVCODEC_COMPONENTS="
1183     bsfs
1184     decoders
1185     encoders
1186     hwaccels
1187     parsers
1188 "
1189
1190 AVDEVICE_COMPONENTS="
1191     indevs
1192     outdevs
1193 "
1194 AVFILTER_COMPONENTS="
1195     filters
1196 "
1197 AVFORMAT_COMPONENTS="
1198     demuxers
1199     muxers
1200     protocols
1201 "
1202
1203 AVRESAMPLE_COMPONENTS=""
1204 AVUTIL_COMPONENTS=""
1205
1206 COMPONENT_LIST="
1207     $AVCODEC_COMPONENTS
1208     $AVDEVICE_COMPONENTS
1209     $AVFILTER_COMPONENTS
1210     $AVFORMAT_COMPONENTS
1211     $AVRESAMPLE_COMPONENTS
1212     $AVUTIL_COMPONENTS
1213 "
1214
1215 EXAMPLE_LIST="
1216     decode_audio_example
1217     decode_video_example
1218     encode_audio_example
1219     encode_video_example
1220     filter_audio_example
1221     metadata_example
1222     output_example
1223     qsvdec_example
1224     transcode_aac_example
1225 "
1226
1227 HWACCEL_LIBRARY_NONFREE_LIST="
1228     cuda
1229     libnpp
1230 "
1231 HWACCEL_LIBRARY_LIST="
1232     $HWACCEL_LIBRARY_NONFREE_LIST
1233     d3d11va
1234     dxva2
1235     libmfx
1236     mmal
1237     nvenc
1238     omx
1239     vaapi
1240     vda
1241     vdpau
1242 "
1243
1244 EXTERNAL_LIBRARY_GPL_LIST="
1245     libcdio
1246     libx264
1247     libx265
1248     libxavs
1249     libxvid
1250 "
1251
1252 EXTERNAL_LIBRARY_NONFREE_LIST="
1253     libfaac
1254     libfdk_aac
1255     openssl
1256 "
1257
1258 EXTERNAL_LIBRARY_VERSION3_LIST="
1259     libopencore_amrnb
1260     libopencore_amrwb
1261     libvo_aacenc
1262     libvo_amrwbenc
1263 "
1264
1265 EXTERNAL_LIBRARY_LIST="
1266     $EXTERNAL_LIBRARY_GPL_LIST
1267     $EXTERNAL_LIBRARY_NONFREE_LIST
1268     $EXTERNAL_LIBRARY_VERSION3_LIST
1269     avisynth
1270     bzlib
1271     frei0r
1272     gnutls
1273     libbs2b
1274     libdc1394
1275     libdcadec
1276     libfontconfig
1277     libfreetype
1278     libgsm
1279     libhdcd
1280     libilbc
1281     libkvazaar
1282     libmp3lame
1283     libopencv
1284     libopenh264
1285     libopenjpeg
1286     libopus
1287     libpulse
1288     librtmp
1289     libschroedinger
1290     libsnappy
1291     libspeex
1292     libtheora
1293     libtwolame
1294     libvorbis
1295     libvpx
1296     libwavpack
1297     libwebp
1298     libxcb
1299     libxcb_shm
1300     libxcb_xfixes
1301     zlib
1302 "
1303
1304 FEATURE_LIST="
1305     gray
1306     hardcoded_tables
1307     omx_rpi
1308     runtime_cpudetect
1309     safe_bitstream_reader
1310     shared
1311     small
1312     sram
1313     static
1314     swscale_alpha
1315 "
1316
1317 LIBRARY_LIST="
1318     avcodec
1319     avdevice
1320     avfilter
1321     avformat
1322     avresample
1323     avutil
1324     swscale
1325 "
1326
1327 LICENSE_LIST="
1328     gpl
1329     nonfree
1330     version3
1331 "
1332
1333 PROGRAM_LIST="
1334     avconv
1335     avplay
1336     avprobe
1337 "
1338
1339 SUBSYSTEM_LIST="
1340     dct
1341     doc
1342     error_resilience
1343     faan
1344     fft
1345     lsp
1346     lzo
1347     mdct
1348     network
1349     rdft
1350 "
1351
1352 CONFIG_LIST="
1353     $COMPONENT_LIST
1354     $EXAMPLE_LIST
1355     $EXTERNAL_LIBRARY_LIST
1356     $HWACCEL_LIBRARY_LIST
1357     $FEATURE_LIST
1358     $LICENSE_LIST
1359     $LIBRARY_LIST
1360     $PROGRAM_LIST
1361     $SUBSYSTEM_LIST
1362     neon_clobber_test
1363     pic
1364     pod2man
1365     texi2html
1366     thumb
1367     valgrind_backtrace
1368     xmm_clobber_test
1369 "
1370
1371 THREADS_LIST="
1372     pthreads
1373     w32threads
1374 "
1375
1376 ATOMICS_LIST="
1377     atomics_gcc
1378     atomics_suncc
1379     atomics_win32
1380 "
1381
1382 ARCH_LIST="
1383     aarch64
1384     alpha
1385     arm
1386     avr32
1387     avr32_ap
1388     avr32_uc
1389     bfin
1390     ia64
1391     m68k
1392     mips
1393     mips64
1394     parisc
1395     ppc
1396     ppc64
1397     s390
1398     sh4
1399     sparc
1400     sparc64
1401     tilegx
1402     tilepro
1403     tomi
1404     x86
1405     x86_32
1406     x86_64
1407 "
1408
1409 ARCH_EXT_LIST_ARM="
1410     armv5te
1411     armv6
1412     armv6t2
1413     armv8
1414     neon
1415     vfp
1416     vfpv3
1417 "
1418
1419 ARCH_EXT_LIST_X86_SIMD="
1420     amd3dnow
1421     amd3dnowext
1422     avx
1423     avx2
1424     fma3
1425     fma4
1426     mmx
1427     mmxext
1428     sse
1429     sse2
1430     sse3
1431     sse4
1432     sse42
1433     ssse3
1434     xop
1435 "
1436
1437 ARCH_EXT_LIST_PPC="
1438     altivec
1439     dcbzl
1440     ldbrx
1441     power8
1442     ppc4xx
1443     vsx
1444 "
1445
1446 ARCH_EXT_LIST_X86="
1447     $ARCH_EXT_LIST_X86_SIMD
1448     cpunop
1449     i686
1450 "
1451
1452 ARCH_EXT_LIST_MIPS="
1453     loongson
1454     mips32r1
1455     mips64r1
1456     mips32r2
1457     mips64r2
1458     mips32r6
1459     mips64r6
1460 "
1461
1462 ARCH_EXT_LIST="
1463     $ARCH_EXT_LIST_ARM
1464     $ARCH_EXT_LIST_MIPS
1465     $ARCH_EXT_LIST_PPC
1466     $ARCH_EXT_LIST_X86
1467     vis
1468 "
1469
1470 ARCH_FEATURES="
1471     aligned_stack
1472     fast_64bit
1473     fast_clz
1474     fast_cmov
1475     local_aligned_8
1476     local_aligned_16
1477     local_aligned_32
1478     simd_align_16
1479     simd_align_32
1480 "
1481
1482 BUILTIN_LIST="
1483     atomic_cas_ptr
1484     machine_rw_barrier
1485     MemoryBarrier
1486     mm_empty
1487     rdtsc
1488     sem_timedwait
1489     sync_val_compare_and_swap
1490 "
1491 HAVE_LIST_CMDLINE="
1492     inline_asm
1493     symver
1494     yasm
1495 "
1496
1497 HAVE_LIST_PUB="
1498     bigendian
1499     fast_unaligned
1500 "
1501
1502 HEADERS_LIST="
1503     AVFoundation_AVFoundation_h
1504     alsa_asoundlib_h
1505     altivec_h
1506     arpa_inet_h
1507     cdio_paranoia_h
1508     cdio_paranoia_paranoia_h
1509     dispatch_dispatch_h
1510     dev_bktr_ioctl_bt848_h
1511     dev_bktr_ioctl_meteor_h
1512     dev_ic_bt8xx_h
1513     dev_video_bktr_ioctl_bt848_h
1514     dev_video_meteor_ioctl_meteor_h
1515     direct_h
1516     dlfcn_h
1517     d3d11_h
1518     dxva_h
1519     gsm_h
1520     io_h
1521     mach_mach_time_h
1522     machine_ioctl_bt848_h
1523     machine_ioctl_meteor_h
1524     malloc_h
1525     poll_h
1526     sndio_h
1527     soundcard_h
1528     stdatomic_h
1529     sys_mman_h
1530     sys_param_h
1531     sys_resource_h
1532     sys_select_h
1533     sys_soundcard_h
1534     sys_time_h
1535     sys_un_h
1536     sys_videoio_h
1537     unistd_h
1538     valgrind_valgrind_h
1539     windows_h
1540     winsock2_h
1541 "
1542
1543 INTRINSICS_LIST="
1544     intrinsics_neon
1545 "
1546
1547 MATH_FUNCS="
1548     atanf
1549     atan2f
1550     cbrtf
1551     cosf
1552     exp2
1553     exp2f
1554     expf
1555     isinf
1556     isnan
1557     ldexpf
1558     llrint
1559     llrintf
1560     log2
1561     log2f
1562     log10f
1563     lrint
1564     lrintf
1565     powf
1566     rint
1567     round
1568     roundf
1569     sinf
1570     trunc
1571     truncf
1572 "
1573
1574 SYSTEM_FUNCS="
1575     aligned_malloc
1576     clock_gettime
1577     closesocket
1578     CommandLineToArgvW
1579     CoTaskMemFree
1580     CryptGenRandom
1581     dlopen
1582     fcntl
1583     flt_lim
1584     fork
1585     getaddrinfo
1586     gethrtime
1587     getopt
1588     GetProcessAffinityMask
1589     GetProcessMemoryInfo
1590     GetProcessTimes
1591     getrusage
1592     GetSystemTimeAsFileTime
1593     gettimeofday
1594     gmtime_r
1595     inet_aton
1596     isatty
1597     jack_port_get_latency_range
1598     LoadLibrary
1599     localtime_r
1600     mach_absolute_time
1601     MapViewOfFile
1602     memalign
1603     mkstemp
1604     mmap
1605     mprotect
1606     nanosleep
1607     posix_memalign
1608     sched_getaffinity
1609     SetConsoleTextAttribute
1610     setmode
1611     setrlimit
1612     Sleep
1613     strerror_r
1614     sysconf
1615     sysctl
1616     usleep
1617     VirtualAlloc
1618 "
1619
1620 TOOLCHAIN_FEATURES="
1621     as_dn_directive
1622     as_fpu_directive
1623     as_func
1624     as_object_arch
1625     asm_mod_q
1626     attribute_may_alias
1627     attribute_packed
1628     ebp_available
1629     ebx_available
1630     gnu_as
1631     ibm_asm
1632     inline_asm_labels
1633     pragma_deprecated
1634     symver_asm_label
1635     symver_gnu_asm
1636     vfp_args
1637     xform_asm
1638     xmm_clobbers
1639 "
1640
1641 TYPES_LIST="
1642     CONDITION_VARIABLE_Ptr
1643     socklen_t
1644     struct_addrinfo
1645     struct_group_source_req
1646     struct_ip_mreq_source
1647     struct_ipv6_mreq
1648     struct_pollfd
1649     struct_rusage_ru_maxrss
1650     struct_sockaddr_in6
1651     struct_sockaddr_sa_len
1652     struct_sockaddr_storage
1653     struct_v4l2_frmivalenum_discrete
1654 "
1655
1656 HAVE_LIST="
1657     $ARCH_EXT_LIST
1658     $(add_suffix _external $ARCH_EXT_LIST)
1659     $(add_suffix _inline   $ARCH_EXT_LIST)
1660     $ARCH_FEATURES
1661     $BUILTIN_LIST
1662     $HAVE_LIST_CMDLINE
1663     $HAVE_LIST_PUB
1664     $HEADERS_LIST
1665     $INTRINSICS_LIST
1666     $MATH_FUNCS
1667     $SYSTEM_FUNCS
1668     $THREADS_LIST
1669     $TOOLCHAIN_FEATURES
1670     $TYPES_LIST
1671     dos_paths
1672     dxva2_lib
1673     libc_msvcrt
1674     libdc1394_1
1675     libdc1394_2
1676     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1677     sdl
1678     section_data_rel_ro
1679     threads
1680     vaapi_drm
1681     vaapi_x11
1682     vdpau_x11
1683 "
1684
1685 # options emitted with CONFIG_ prefix but not available on the command line
1686 CONFIG_EXTRA="
1687     aandcttables
1688     ac3dsp
1689     audio_frame_queue
1690     audiodsp
1691     blockdsp
1692     bswapdsp
1693     cabac
1694     dirac_parse
1695     dvprofile
1696     faandct
1697     faanidct
1698     fdctdsp
1699     flacdsp
1700     fmtconvert
1701     g722dsp
1702     gmp
1703     golomb
1704     gplv3
1705     h263dsp
1706     h264chroma
1707     h264dsp
1708     h264parse
1709     h264pred
1710     h264qpel
1711     hpeldsp
1712     huffman
1713     huffyuvdsp
1714     huffyuvencdsp
1715     idctdsp
1716     iirfilter
1717     imdct15
1718     intrax8
1719     iso_media
1720     ividsp
1721     jpegtables
1722     libx262
1723     lgplv3
1724     lpc
1725     lzf
1726     me_cmp
1727     mpeg_er
1728     mpegaudio
1729     mpegaudiodsp
1730     mpegvideo
1731     mpegvideoenc
1732     mss34dsp
1733     pixblockdsp
1734     qpeldsp
1735     qsv
1736     qsvdec
1737     qsvenc
1738     rangecoder
1739     riffdec
1740     riffenc
1741     rtpdec
1742     rtpenc_chain
1743     rv34dsp
1744     sinewin
1745     snappy
1746     srtp
1747     startcode
1748     texturedsp
1749     texturedspenc
1750     tpeldsp
1751     vaapi_encode
1752     vc1dsp
1753     videodsp
1754     vp3dsp
1755     vp56dsp
1756     vp8dsp
1757     wma_freqs
1758     wmv2dsp
1759 "
1760
1761 CMDLINE_SELECT="
1762     $ARCH_EXT_LIST
1763     $CONFIG_LIST
1764     $HAVE_LIST_CMDLINE
1765     $THREADS_LIST
1766     asm
1767     cross_compile
1768     debug
1769     extra_warnings
1770     logging
1771     lto
1772     optimizations
1773     rpath
1774 "
1775
1776 PATHS_LIST="
1777     bindir
1778     datadir
1779     docdir
1780     incdir
1781     libdir
1782     mandir
1783     prefix
1784     shlibdir
1785 "
1786
1787 CMDLINE_SET="
1788     $PATHS_LIST
1789     ar
1790     arch
1791     as
1792     build_suffix
1793     cc
1794     objcc
1795     cpu
1796     cross_prefix
1797     custom_allocator
1798     dep_cc
1799     env
1800     extra_version
1801     host_cc
1802     host_cflags
1803     host_ld
1804     host_ldflags
1805     host_libs
1806     host_os
1807     ld
1808     logfile
1809     malloc_prefix
1810     nm
1811     optflags
1812     pkg_config
1813     pkg_config_flags
1814     random_seed
1815     samples
1816     sysinclude
1817     sysroot
1818     target_exec
1819     target_os
1820     target_path
1821     target_samples
1822     toolchain
1823 "
1824
1825 CMDLINE_APPEND="
1826     extra_cflags
1827     extra_objcflags
1828     host_cppflags
1829 "
1830
1831 # code dependency declarations
1832
1833 # architecture extensions
1834
1835 armv5te_deps="arm"
1836 armv6_deps="arm"
1837 armv6t2_deps="arm"
1838 armv8_deps="aarch64"
1839 neon_deps_any="aarch64 arm"
1840 intrinsics_neon_deps="neon"
1841 vfp_deps_any="aarch64 arm"
1842 vfpv3_deps="vfp"
1843
1844 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1845
1846 altivec_deps="ppc"
1847 ppc4xx_deps="ppc"
1848 vsx_deps="altivec"
1849 power8_deps="vsx"
1850
1851 cpunop_deps="i686"
1852 x86_64_select="i686"
1853 x86_64_suggest="fast_cmov"
1854
1855 amd3dnow_deps="mmx"
1856 amd3dnowext_deps="amd3dnow"
1857 i686_deps="x86"
1858 mmx_deps="x86"
1859 mmxext_deps="mmx"
1860 sse_deps="mmxext"
1861 sse2_deps="sse"
1862 sse3_deps="sse2"
1863 ssse3_deps="sse3"
1864 sse4_deps="ssse3"
1865 sse42_deps="sse4"
1866 avx_deps="sse42"
1867 xop_deps="avx"
1868 fma3_deps="avx"
1869 fma4_deps="avx"
1870 avx2_deps="avx"
1871
1872 mmx_external_deps="yasm"
1873 mmx_inline_deps="inline_asm"
1874 mmx_suggest="mmx_external mmx_inline"
1875
1876 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1877     eval dep=\$${ext}_deps
1878     eval ${ext}_external_deps='"${dep}_external"'
1879     eval ${ext}_inline_deps='"${dep}_inline"'
1880     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1881 done
1882
1883 aligned_stack_if_any="aarch64 ppc x86"
1884 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1885 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1886 fast_unaligned_if_any="aarch64 ppc x86"
1887 simd_align_16_if_any="altivec neon sse"
1888 simd_align_32_if_any="avx"
1889
1890 # system capabilities
1891 symver_if_any="symver_asm_label symver_gnu_asm"
1892 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
1893
1894 # threading support
1895 atomics_gcc_if="sync_val_compare_and_swap"
1896 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1897 atomics_win32_if="MemoryBarrier"
1898 atomics_native_if_any="$ATOMICS_LIST"
1899 w32threads_deps="atomics_native"
1900 threads_if_any="$THREADS_LIST"
1901
1902 # subsystems
1903 dct_select="rdft"
1904 dirac_parse_select="golomb"
1905 error_resilience_select="me_cmp"
1906 faandct_deps="faan fdctdsp"
1907 faanidct_deps="faan idctdsp"
1908 h264dsp_select="startcode"
1909 intrax8_select="blockdsp idctdsp"
1910 mdct_select="fft"
1911 rdft_select="fft"
1912 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1913 mpeg_er_select="error_resilience"
1914 mpegaudio_select="mpegaudiodsp"
1915 mpegaudiodsp_select="dct"
1916 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1917 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1918 vc1dsp_select="h264chroma qpeldsp startcode"
1919
1920 # decoders / encoders
1921 aac_decoder_select="imdct15 mdct sinewin"
1922 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1923 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1924 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1925 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1926 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1927 adpcm_g722_decoder_select="g722dsp"
1928 adpcm_g722_encoder_select="g722dsp"
1929 aic_decoder_select="golomb idctdsp"
1930 alac_encoder_select="lpc"
1931 als_decoder_select="bswapdsp"
1932 amrnb_decoder_select="lsp"
1933 amrwb_decoder_select="lsp"
1934 amv_decoder_select="sp5x_decoder"
1935 ape_decoder_select="bswapdsp"
1936 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1937 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1938 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1939 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1940 atrac1_decoder_select="mdct sinewin"
1941 atrac3_decoder_select="mdct"
1942 atrac3p_decoder_select="mdct sinewin"
1943 bink_decoder_select="blockdsp hpeldsp"
1944 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1945 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1946 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1947 cllc_decoder_select="bswapdsp"
1948 comfortnoise_encoder_select="lpc"
1949 cook_decoder_select="audiodsp mdct sinewin"
1950 cscd_decoder_select="lzo"
1951 cscd_decoder_suggest="zlib"
1952 dca_decoder_select="fmtconvert mdct"
1953 dds_decoder_select="texturedsp"
1954 dnxhd_decoder_select="blockdsp idctdsp"
1955 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1956 dvvideo_decoder_select="dvprofile idctdsp"
1957 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1958 dxa_decoder_deps="zlib"
1959 dxv_decoder_select="lzf texturedsp"
1960 eac3_decoder_select="ac3_decoder"
1961 eac3_encoder_select="ac3_encoder"
1962 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1963 eatgq_decoder_select="aandcttables idctdsp"
1964 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
1965 exr_decoder_deps="zlib"
1966 ffv1_decoder_select="golomb rangecoder"
1967 ffv1_encoder_select="rangecoder"
1968 ffvhuff_decoder_select="huffyuv_decoder"
1969 ffvhuff_encoder_select="huffyuv_encoder"
1970 fic_decoder_select="golomb"
1971 flac_decoder_select="flacdsp golomb"
1972 flac_encoder_select="bswapdsp flacdsp golomb lpc"
1973 flashsv_decoder_deps="zlib"
1974 flashsv_encoder_deps="zlib"
1975 flashsv2_decoder_deps="zlib"
1976 flv_decoder_select="h263_decoder"
1977 flv_encoder_select="h263_encoder"
1978 fourxm_decoder_select="blockdsp bswapdsp"
1979 fraps_decoder_select="bswapdsp huffman"
1980 g2m_decoder_deps="zlib"
1981 g2m_decoder_select="blockdsp idctdsp jpegtables"
1982 h261_decoder_select="mpeg_er mpegvideo"
1983 h261_encoder_select="aandcttables mpegvideoenc"
1984 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1985 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1986 h263i_decoder_select="h263_decoder"
1987 h263p_encoder_select="h263_encoder"
1988 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
1989 h264_decoder_suggest="error_resilience"
1990 hap_decoder_select="snappy texturedsp"
1991 hap_encoder_deps="libsnappy"
1992 hap_encoder_select="texturedspenc"
1993 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1994 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1995 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1996 iac_decoder_select="imc_decoder"
1997 imc_decoder_select="bswapdsp fft mdct sinewin"
1998 indeo3_decoder_select="hpeldsp"
1999 indeo4_decoder_select="ividsp"
2000 indeo5_decoder_select="ividsp"
2001 interplay_video_decoder_select="hpeldsp"
2002 jpegls_decoder_select="golomb mjpeg_decoder"
2003 jpegls_encoder_select="golomb"
2004 jv_decoder_select="blockdsp"
2005 lagarith_decoder_select="huffyuvdsp"
2006 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2007 loco_decoder_select="golomb"
2008 magicyuv_decoder_select="huffyuvdsp"
2009 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2010 metasound_decoder_select="lsp mdct sinewin"
2011 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2012 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2013 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2014 mjpegb_decoder_select="mjpeg_decoder"
2015 mlp_decoder_select="mlp_parser"
2016 motionpixels_decoder_select="bswapdsp"
2017 mp1_decoder_select="mpegaudio"
2018 mp1float_decoder_select="mpegaudio"
2019 mp2_decoder_select="mpegaudio"
2020 mp2float_decoder_select="mpegaudio"
2021 mp3_decoder_select="mpegaudio"
2022 mp3adu_decoder_select="mpegaudio"
2023 mp3adufloat_decoder_select="mpegaudio"
2024 mp3float_decoder_select="mpegaudio"
2025 mp3on4_decoder_select="mpegaudio"
2026 mp3on4float_decoder_select="mpegaudio"
2027 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2028 mpc8_decoder_select="mpegaudiodsp"
2029 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2030 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2031 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2032 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2033 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2034 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2035 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2036 mpeg4_encoder_select="h263_encoder"
2037 msa1_decoder_select="mss34dsp"
2038 msmpeg4v1_decoder_select="h263_decoder"
2039 msmpeg4v2_decoder_select="h263_decoder"
2040 msmpeg4v2_encoder_select="h263_encoder"
2041 msmpeg4v3_decoder_select="h263_decoder"
2042 msmpeg4v3_encoder_select="h263_encoder"
2043 mss2_decoder_select="error_resilience mpeg_er mpegvideo vc1_decoder"
2044 mts2_decoder_select="mss34dsp"
2045 mxpeg_decoder_select="mjpeg_decoder"
2046 nellymoser_decoder_select="mdct sinewin"
2047 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2048 nuv_decoder_select="idctdsp lzo"
2049 on2avc_decoder_select="mdct"
2050 opus_decoder_deps="avresample"
2051 opus_decoder_select="imdct15"
2052 png_decoder_deps="zlib"
2053 png_encoder_deps="zlib"
2054 png_encoder_select="huffyuvencdsp"
2055 prores_decoder_select="idctdsp"
2056 prores_encoder_select="fdctdsp"
2057 qcelp_decoder_select="lsp"
2058 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2059 ra_144_encoder_select="audio_frame_queue lpc"
2060 ralf_decoder_select="golomb"
2061 rscc_decoder_deps="zlib"
2062 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2063 rv10_encoder_select="h263_encoder"
2064 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2065 rv20_encoder_select="h263_encoder"
2066 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2067 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2068 screenpresso_decoder_deps="zlib"
2069 shorten_decoder_select="golomb"
2070 sipr_decoder_select="lsp"
2071 sp5x_decoder_select="mjpeg_decoder"
2072 svq1_decoder_select="hpeldsp"
2073 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2074 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2075 svq3_decoder_suggest="zlib"
2076 tak_decoder_select="audiodsp"
2077 tdsc_decoder_deps="zlib"
2078 tdsc_decoder_select="mjpeg_decoder"
2079 theora_decoder_select="vp3_decoder"
2080 thp_decoder_select="mjpeg_decoder"
2081 tiff_decoder_suggest="zlib"
2082 tiff_encoder_suggest="zlib"
2083 truehd_decoder_select="mlp_decoder"
2084 truemotion2_decoder_select="bswapdsp"
2085 truespeech_decoder_select="bswapdsp"
2086 tscc_decoder_deps="zlib"
2087 txd_decoder_select="texturedsp"
2088 twinvq_decoder_select="mdct lsp sinewin"
2089 utvideo_decoder_select="bswapdsp"
2090 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2091 vble_decoder_select="huffyuvdsp"
2092 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2093 vc1image_decoder_select="vc1_decoder"
2094 vorbis_decoder_select="mdct"
2095 vorbis_encoder_select="mdct"
2096 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2097 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2098 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2099 vp6a_decoder_select="vp6_decoder"
2100 vp6f_decoder_select="vp6_decoder"
2101 vp7_decoder_select="h264pred videodsp vp8dsp"
2102 vp8_decoder_select="h264pred videodsp vp8dsp"
2103 vp9_decoder_select="videodsp"
2104 webp_decoder_select="vp8_decoder"
2105 wmapro_decoder_select="mdct sinewin wma_freqs"
2106 wmav1_decoder_select="mdct sinewin wma_freqs"
2107 wmav1_encoder_select="mdct sinewin wma_freqs"
2108 wmav2_decoder_select="mdct sinewin wma_freqs"
2109 wmav2_encoder_select="mdct sinewin wma_freqs"
2110 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2111 wmv1_decoder_select="h263_decoder"
2112 wmv1_encoder_select="h263_encoder"
2113 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2114 wmv2_encoder_select="h263_encoder wmv2dsp"
2115 wmv3_decoder_select="vc1_decoder"
2116 wmv3image_decoder_select="wmv3_decoder"
2117 zerocodec_decoder_deps="zlib"
2118 zlib_decoder_deps="zlib"
2119 zlib_encoder_deps="zlib"
2120 zmbv_decoder_deps="zlib"
2121 zmbv_encoder_deps="zlib"
2122
2123 # hardware accelerators
2124 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2125 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2126 vaapi_deps="va_va_h"
2127 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2128 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2129 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2130
2131 h263_vaapi_hwaccel_deps="vaapi"
2132 h263_vaapi_hwaccel_select="h263_decoder"
2133 h264_d3d11va_hwaccel_deps="d3d11va"
2134 h264_d3d11va_hwaccel_select="h264_decoder"
2135 h264_dxva2_hwaccel_deps="dxva2"
2136 h264_dxva2_hwaccel_select="h264_decoder"
2137 h264_mmal_hwaccel_deps="mmal"
2138 h264_qsv_hwaccel_deps="libmfx"
2139 h264_vaapi_hwaccel_deps="vaapi"
2140 h264_vaapi_hwaccel_select="h264_decoder"
2141 h264_vda_hwaccel_deps="vda"
2142 h264_vda_hwaccel_select="h264_decoder"
2143 h264_vda_old_hwaccel_deps="vda"
2144 h264_vda_old_hwaccel_select="h264_decoder"
2145 h264_vdpau_hwaccel_deps="vdpau"
2146 h264_vdpau_hwaccel_select="h264_decoder"
2147 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2148 hevc_d3d11va_hwaccel_select="hevc_decoder"
2149 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2150 hevc_dxva2_hwaccel_select="hevc_decoder"
2151 hevc_qsv_hwaccel_deps="libmfx"
2152 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2153 hevc_vdpau_hwaccel_select="hevc_decoder"
2154 mpeg1_vdpau_hwaccel_deps="vdpau"
2155 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2156 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2157 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2158 mpeg2_dxva2_hwaccel_deps="dxva2"
2159 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2160 mpeg2_mmal_hwaccel_deps="mmal"
2161 mpeg2_qsv_hwaccel_deps="libmfx"
2162 mpeg2_vaapi_hwaccel_deps="vaapi"
2163 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2164 mpeg2_vdpau_hwaccel_deps="vdpau"
2165 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2166 mpeg4_vaapi_hwaccel_deps="vaapi"
2167 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2168 mpeg4_vdpau_hwaccel_deps="vdpau"
2169 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2170 vc1_d3d11va_hwaccel_deps="d3d11va"
2171 vc1_d3d11va_hwaccel_select="vc1_decoder"
2172 vc1_dxva2_hwaccel_deps="dxva2"
2173 vc1_dxva2_hwaccel_select="vc1_decoder"
2174 vc1_mmal_hwaccel_deps="mmal"
2175 vc1_qsv_hwaccel_deps="libmfx"
2176 vc1_vaapi_hwaccel_deps="vaapi"
2177 vc1_vaapi_hwaccel_select="vc1_decoder"
2178 vc1_vdpau_hwaccel_deps="vdpau"
2179 vc1_vdpau_hwaccel_select="vc1_decoder"
2180 vp8_qsv_hwaccel_deps="libmfx"
2181 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2182 vp8_vaapi_hwaccel_select="vp8_decoder"
2183 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2184 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2185 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2186 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2187
2188 # hardware-accelerated codecs
2189 nvenc_deps_any="dlopen LoadLibrary"
2190 nvenc_extralibs='$ldl'
2191 omx_deps="dlopen pthreads"
2192 omx_extralibs='$ldl'
2193 qsvdec_select="qsv"
2194 qsvenc_select="qsv"
2195 vaapi_encode_deps="vaapi"
2196
2197 hwupload_cuda_filter_deps="cuda"
2198 scale_npp_filter_deps="cuda libnpp"
2199
2200 h264_mmal_decoder_deps="mmal"
2201 h264_nvenc_encoder_deps="nvenc"
2202 h264_omx_encoder_deps="omx"
2203 h264_qsv_decoder_deps="libmfx"
2204 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2205 h264_qsv_encoder_deps="libmfx"
2206 h264_qsv_encoder_select="qsvenc"
2207 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2208 h264_vaapi_encoder_select="vaapi_encode golomb"
2209 hevc_nvenc_encoder_deps="nvenc"
2210 hevc_qsv_decoder_deps="libmfx"
2211 hevc_qsv_encoder_deps="libmfx"
2212 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2213 hevc_qsv_encoder_select="qsvenc"
2214 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2215 hevc_vaapi_encoder_select="vaapi_encode golomb"
2216 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2217 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2218 mpeg2_mmal_decoder_deps="mmal"
2219 mpeg2_qsv_decoder_deps="libmfx"
2220 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2221 mpeg2_qsv_encoder_deps="libmfx"
2222 mpeg2_qsv_encoder_select="qsvenc"
2223 mpeg4_omx_encoder_deps="omx"
2224 vc1_mmal_decoder_deps="mmal"
2225 vc1_qsv_decoder_deps="libmfx"
2226 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2227 vp8_qsv_decoder_deps="libmfx"
2228 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2229
2230 nvenc_h264_encoder_deps="nvenc"
2231 nvenc_hevc_encoder_deps="nvenc"
2232
2233 # parsers
2234 h264_parser_select="golomb h264dsp h264parse"
2235 hevc_parser_select="golomb"
2236 mpegvideo_parser_select="mpegvideo"
2237 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2238 vc1_parser_select="vc1dsp"
2239
2240 # bitstream_filters
2241 mjpeg2jpeg_bsf_select="jpegtables"
2242
2243 # external libraries
2244 libdcadec_decoder_deps="libdcadec"
2245 libfaac_encoder_deps="libfaac"
2246 libfaac_encoder_select="audio_frame_queue"
2247 libfdk_aac_decoder_deps="libfdk_aac"
2248 libfdk_aac_encoder_deps="libfdk_aac"
2249 libfdk_aac_encoder_select="audio_frame_queue"
2250 libgsm_decoder_deps="libgsm"
2251 libgsm_encoder_deps="libgsm"
2252 libgsm_ms_decoder_deps="libgsm"
2253 libgsm_ms_encoder_deps="libgsm"
2254 libilbc_decoder_deps="libilbc"
2255 libilbc_encoder_deps="libilbc"
2256 libkvazaar_encoder_deps="libkvazaar"
2257 libmp3lame_encoder_deps="libmp3lame"
2258 libmp3lame_encoder_select="audio_frame_queue"
2259 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2260 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2261 libopencore_amrnb_encoder_select="audio_frame_queue"
2262 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2263 libopenh264_decoder_deps="libopenh264"
2264 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2265 libopenh264_encoder_deps="libopenh264"
2266 libopenjpeg_decoder_deps="libopenjpeg"
2267 libopenjpeg_encoder_deps="libopenjpeg"
2268 libopus_decoder_deps="libopus"
2269 libopus_encoder_deps="libopus"
2270 libopus_encoder_select="audio_frame_queue"
2271 libschroedinger_decoder_deps="libschroedinger"
2272 libschroedinger_encoder_deps="libschroedinger"
2273 libspeex_decoder_deps="libspeex"
2274 libspeex_encoder_deps="libspeex"
2275 libspeex_encoder_select="audio_frame_queue"
2276 libtheora_encoder_deps="libtheora"
2277 libtwolame_encoder_deps="libtwolame"
2278 libvo_aacenc_encoder_deps="libvo_aacenc"
2279 libvo_aacenc_encoder_select="audio_frame_queue"
2280 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2281 libvorbis_encoder_deps="libvorbis"
2282 libvorbis_encoder_select="audio_frame_queue"
2283 libvpx_vp8_decoder_deps="libvpx"
2284 libvpx_vp8_encoder_deps="libvpx"
2285 libvpx_vp9_decoder_deps="libvpx"
2286 libvpx_vp9_encoder_deps="libvpx"
2287 libwavpack_encoder_deps="libwavpack"
2288 libwebp_encoder_deps="libwebp"
2289 libx262_encoder_deps="libx262"
2290 libx264_encoder_deps="libx264"
2291 libx265_encoder_deps="libx265"
2292 libxavs_encoder_deps="libxavs"
2293 libxvid_encoder_deps="libxvid mkstemp"
2294
2295 # demuxers / muxers
2296 ac3_demuxer_select="ac3_parser"
2297 asf_demuxer_select="riffdec"
2298 asf_muxer_select="riffenc"
2299 asf_stream_muxer_select="asf_muxer"
2300 avi_demuxer_select="iso_media riffdec"
2301 avi_muxer_select="riffenc"
2302 avisynth_demuxer_deps="avisynth"
2303 avisynth_demuxer_select="riffdec"
2304 caf_demuxer_select="iso_media riffdec"
2305 dash_muxer_select="mp4_muxer"
2306 dirac_demuxer_select="dirac_parser"
2307 dv_demuxer_select="dvprofile"
2308 dv_muxer_select="dvprofile"
2309 dxa_demuxer_select="riffdec"
2310 eac3_demuxer_select="ac3_parser"
2311 f4v_muxer_select="mov_muxer"
2312 flac_demuxer_select="flac_parser"
2313 hds_muxer_select="flv_muxer"
2314 hls_muxer_select="mpegts_muxer"
2315 ipod_muxer_select="mov_muxer"
2316 ismv_muxer_select="mov_muxer"
2317 matroska_audio_muxer_select="matroska_muxer"
2318 matroska_demuxer_select="iso_media riffdec"
2319 matroska_demuxer_suggest="bzlib lzo zlib"
2320 matroska_muxer_select="iso_media riffenc"
2321 mmf_muxer_select="riffenc"
2322 mov_demuxer_select="iso_media riffdec"
2323 mov_demuxer_suggest="zlib"
2324 mov_muxer_select="iso_media riffenc rtpenc_chain"
2325 mp3_demuxer_select="mpegaudio_parser"
2326 mp4_muxer_select="mov_muxer"
2327 mpegts_demuxer_select="iso_media"
2328 mpegts_muxer_select="adts_muxer latm_muxer"
2329 mpegtsraw_demuxer_select="mpegts_demuxer"
2330 mxf_d10_muxer_select="mxf_muxer"
2331 nut_muxer_select="riffenc"
2332 nuv_demuxer_select="riffdec"
2333 oga_muxer_select="ogg_muxer"
2334 ogg_demuxer_select="dirac_parse"
2335 opus_muxer_select="ogg_muxer"
2336 psp_muxer_select="mov_muxer"
2337 rtp_demuxer_select="sdp_demuxer"
2338 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2339 rtsp_demuxer_select="http_protocol rtpdec"
2340 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2341 sap_demuxer_select="sdp_demuxer"
2342 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2343 sdp_demuxer_select="rtpdec"
2344 smoothstreaming_muxer_select="ismv_muxer"
2345 spdif_muxer_select="aac_parser"
2346 spx_muxer_select="ogg_muxer"
2347 swf_demuxer_suggest="zlib"
2348 tak_demuxer_select="tak_parser"
2349 tg2_muxer_select="mov_muxer"
2350 tgp_muxer_select="mov_muxer"
2351 w64_demuxer_select="wav_demuxer"
2352 wav_demuxer_select="riffdec"
2353 wav_muxer_select="riffenc"
2354 webm_muxer_select="iso_media riffenc"
2355 webm_muxer_suggest="libopus_encoder libvorbis_encoder libvpx_vp8_encoder libvpx_vp9_encoder"
2356 wtv_demuxer_select="mpegts_demuxer riffdec"
2357 xmv_demuxer_select="riffdec"
2358 xwma_demuxer_select="riffdec"
2359
2360 # indevs / outdevs
2361 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2362 alsa_outdev_deps="alsa_asoundlib_h"
2363 avfoundation_indev_deps="AVFoundation_AVFoundation_h"
2364 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2365 dv1394_indev_deps="dv1394"
2366 dv1394_indev_select="dv_demuxer"
2367 fbdev_indev_deps="linux_fb_h"
2368 jack_indev_deps="jack_jack_h"
2369 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2370 libcdio_indev_deps="libcdio"
2371 libdc1394_indev_deps="libdc1394"
2372 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2373 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2374 pulse_indev_deps="libpulse"
2375 sndio_indev_deps="sndio_h"
2376 sndio_outdev_deps="sndio_h"
2377 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2378 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2379 vfwcap_indev_extralibs="-lavicap32"
2380 xcbgrab_indev_deps="libxcb"
2381
2382 # protocols
2383 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2384 ffrtmpcrypt_protocol_deps_any="gmp openssl"
2385 ffrtmpcrypt_protocol_select="tcp_protocol"
2386 ffrtmphttp_protocol_deps="!librtmp_protocol"
2387 ffrtmphttp_protocol_select="http_protocol"
2388 gopher_protocol_select="network"
2389 http_protocol_select="tcp_protocol"
2390 httpproxy_protocol_select="tcp_protocol"
2391 https_protocol_select="tls_protocol"
2392 icecast_protocol_select="http_protocol"
2393 librtmp_protocol_deps="librtmp"
2394 librtmpe_protocol_deps="librtmp"
2395 librtmps_protocol_deps="librtmp"
2396 librtmpt_protocol_deps="librtmp"
2397 librtmpte_protocol_deps="librtmp"
2398 mmsh_protocol_select="http_protocol"
2399 mmst_protocol_select="network"
2400 rtmp_protocol_deps="!librtmp_protocol"
2401 rtmp_protocol_select="tcp_protocol"
2402 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2403 rtmps_protocol_deps="!librtmp_protocol"
2404 rtmps_protocol_select="tls_protocol"
2405 rtmpt_protocol_select="ffrtmphttp_protocol"
2406 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2407 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2408 rtp_protocol_select="udp_protocol"
2409 sctp_protocol_deps="struct_sctp_event_subscribe"
2410 sctp_protocol_select="network"
2411 srtp_protocol_select="rtp_protocol srtp"
2412 tcp_protocol_select="network"
2413 tls_gnutls_protocol_deps="gnutls"
2414 tls_gnutls_protocol_select="tcp_protocol"
2415 tls_openssl_protocol_deps="openssl !tls_gnutls_protocol"
2416 tls_openssl_protocol_select="tcp_protocol"
2417 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2418 udp_protocol_select="network"
2419 unix_protocol_deps="sys_un_h"
2420 unix_protocol_select="network"
2421
2422 # filters
2423 asyncts_filter_deps="avresample"
2424 blackframe_filter_deps="gpl"
2425 boxblur_filter_deps="gpl"
2426 bs2b_filter_deps="libbs2b"
2427 cropdetect_filter_deps="gpl"
2428 deinterlace_qsv_filter_deps="libmfx"
2429 delogo_filter_deps="gpl"
2430 drawtext_filter_deps="libfreetype"
2431 frei0r_filter_deps="frei0r dlopen"
2432 frei0r_filter_extralibs='$ldl'
2433 frei0r_src_filter_deps="frei0r dlopen"
2434 frei0r_src_filter_extralibs='$ldl'
2435 hdcd_filter_deps="libhdcd"
2436 hqdn3d_filter_deps="gpl"
2437 interlace_filter_deps="gpl"
2438 movie_filter_deps="avcodec avformat"
2439 ocv_filter_deps="libopencv"
2440 resample_filter_deps="avresample"
2441 scale_filter_deps="swscale"
2442 scale_qsv_filter_deps="libmfx"
2443 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2444
2445 # examples
2446 decode_audio_example_deps="avcodec avutil"
2447 decode_video_example_deps="avcodec avutil"
2448 encode_audio_example_deps="avcodec avutil"
2449 encode_video_example_deps="avcodec avutil"
2450 filter_audio_example_deps="avfilter avutil"
2451 metadata_example_deps="avformat avutil"
2452 output_example_deps="avcodec avformat avresample avutil swscale"
2453 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
2454 transcode_aac_example_deps="avcodec avformat avresample"
2455
2456 # libraries, in linking order
2457 avcodec_deps="avutil"
2458 avdevice_deps="avformat avcodec avutil"
2459 avfilter_deps="avutil"
2460 avformat_deps="avcodec avutil"
2461 avresample_deps="avutil"
2462 swscale_deps="avutil"
2463
2464 # programs
2465 avconv_deps="avcodec avfilter avformat avresample swscale"
2466 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2467                fps_filter null_filter resample_filter scale_filter
2468                trim_filter"
2469 avplay_deps="avcodec avfilter avformat avresample sdl"
2470 avplay_libs='$sdl_libs'
2471 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2472 avprobe_deps="avcodec avformat"
2473
2474 # documentation
2475 pod2man_deps="doc"
2476 texi2html_deps="doc"
2477
2478 # default parameters
2479
2480 logfile="config.log"
2481
2482 # installation paths
2483 prefix_default="/usr/local"
2484 bindir_default='${prefix}/bin'
2485 datadir_default='${prefix}/share/avconv'
2486 docdir_default='${prefix}/share/doc/libav'
2487 incdir_default='${prefix}/include'
2488 libdir_default='${prefix}/lib'
2489 mandir_default='${prefix}/share/man'
2490 shlibdir_default="$libdir_default"
2491
2492 # toolchain
2493 ar_default="ar"
2494 cc_default="gcc"
2495 host_cc_default="gcc"
2496 cp_f="cp -f"
2497 ln_s="ln -s -f"
2498 nm_default="nm -g"
2499 objformat="elf"
2500 pkg_config_default=pkg-config
2501 ranlib="ranlib"
2502 strip="strip"
2503 version_script='--version-script'
2504 yasmexe="yasm"
2505
2506 # machine
2507 arch_default=$(uname -m)
2508 cpu="generic"
2509 intrinsics="none"
2510
2511 # OS
2512 target_os_default=$(tolower $(uname -s))
2513 host_os=$target_os_default
2514
2515 # configurable options
2516 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2517
2518 enable asm
2519 enable debug
2520 enable doc
2521 enable faan faandct faanidct
2522 enable optimizations
2523 enable safe_bitstream_reader
2524 enable static
2525 enable swscale_alpha
2526 enable valgrind_backtrace
2527
2528 # By default, enable only those hwaccels that have no external dependencies.
2529 enable d3d11va dxva2 vda vdpau
2530
2531 # build settings
2532 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2533 LIBPREF="lib"
2534 LIBSUF=".a"
2535 FULLNAME='$(NAME)$(BUILDSUF)'
2536 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2537 SLIBPREF="lib"
2538 SLIBSUF=".so"
2539 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2540 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2541 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2542 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2543 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2544 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2545 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2546
2547 asflags_filter=echo
2548 cflags_filter=echo
2549 ldflags_filter=echo
2550
2551 AS_C='-c'
2552 AS_O='-o $@'
2553 CC_C='-c'
2554 CC_E='-E -o $@'
2555 CC_O='-o $@'
2556 OBJCC_C='-c'
2557 OBJCC_E='-E -o $@'
2558 OBJCC_O='-o $@'
2559 LD_O='-o $@'
2560 LD_LIB='-l%'
2561 LD_PATH='-L'
2562 HOSTCC_C='-c'
2563 HOSTCC_E='-E -o $@'
2564 HOSTCC_O='-o $@'
2565 HOSTLD_O='-o $@'
2566
2567 host_libs='-lm'
2568 host_cflags_filter=echo
2569 host_ldflags_filter=echo
2570
2571 target_path='$(CURDIR)'
2572
2573 # since the object filename is not given with the -MM flag, the compiler
2574 # is only able to print the basename, and we must add the path ourselves
2575 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2576 DEPFLAGS='-MM'
2577
2578 # find source path
2579 if test -f configure; then
2580     source_path=.
2581 else
2582     source_path=$(cd $(dirname "$0"); pwd)
2583     echo "$source_path" | grep -q '[[:blank:]]' &&
2584         die "Out of tree builds are impossible with whitespace in source path."
2585     test -e "$source_path/config.h" &&
2586         die "Out of tree builds are impossible with config.h in source dir."
2587 fi
2588
2589 for v in "$@"; do
2590     r=${v#*=}
2591     l=${v%"$r"}
2592     r=$(sh_quote "$r")
2593     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2594 done
2595
2596 find_things(){
2597     thing=$1
2598     pattern=$2
2599     file=$source_path/$3
2600     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2601 }
2602
2603 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2604 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2605 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2606 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2607 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2608 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2609 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2610 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2611 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2612
2613 find_things_extern(){
2614     thing=$1
2615     pattern=$2
2616     file=$source_path/$3
2617     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2618 }
2619
2620 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2621 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2622
2623 ALL_COMPONENTS="
2624     $BSF_LIST
2625     $DECODER_LIST
2626     $DEMUXER_LIST
2627     $ENCODER_LIST
2628     $FILTER_LIST
2629     $HWACCEL_LIST
2630     $INDEV_LIST
2631     $MUXER_LIST
2632     $OUTDEV_LIST
2633     $PARSER_LIST
2634     $PROTOCOL_LIST
2635 "
2636
2637 for n in $COMPONENT_LIST; do
2638     v=$(toupper ${n%s})_LIST
2639     eval enable \$$v
2640     eval ${n}_if_any="\$$v"
2641 done
2642
2643 enable $ARCH_EXT_LIST
2644
2645 die_unknown(){
2646     echo "Unknown option \"$1\"."
2647     echo "See $0 --help for available options."
2648     exit 1
2649 }
2650
2651 print_3_columns() {
2652     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2653 }
2654
2655 show_list() {
2656     suffix=_$1
2657     shift
2658     echo $* | sed s/$suffix//g | print_3_columns
2659     exit 0
2660 }
2661
2662 rand_list(){
2663     IFS=', '
2664     set -- $*
2665     unset IFS
2666     for thing; do
2667         comp=${thing%:*}
2668         prob=${thing#$comp}
2669         prob=${prob#:}
2670         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2671         echo "prob ${prob:-0.5}"
2672         printf '%s\n' $comp
2673     done
2674 }
2675
2676 do_random(){
2677     action=$1
2678     shift
2679     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2680     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2681 }
2682
2683 for opt do
2684     optval="${opt#*=}"
2685     case "$opt" in
2686         --extra-ldflags=*)
2687             add_ldflags $optval
2688         ;;
2689         --extra-ldexeflags=*)
2690             add_ldexeflags $optval
2691         ;;
2692         --extra-libs=*)
2693             add_extralibs $optval
2694         ;;
2695         --disable-devices)
2696             disable $INDEV_LIST $OUTDEV_LIST
2697         ;;
2698         --enable-debug=*)
2699             debuglevel="$optval"
2700         ;;
2701         --disable-programs)
2702             disable $PROGRAM_LIST
2703         ;;
2704         --disable-everything)
2705             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2706         ;;
2707         --disable-all)
2708             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2709             disable $LIBRARY_LIST $PROGRAM_LIST doc
2710         ;;
2711         --enable-random|--disable-random)
2712             action=${opt%%-random}
2713             do_random ${action#--} $COMPONENT_LIST
2714         ;;
2715         --enable-random=*|--disable-random=*)
2716             action=${opt%%-random=*}
2717             do_random ${action#--} $optval
2718         ;;
2719         --enable-*=*|--disable-*=*)
2720             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2721             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2722             eval list=\$$(toupper $thing)_LIST
2723             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2724             $action $(filter "$name" $list)
2725         ;;
2726         --enable-avserver|--disable-avserver*)
2727             warn "avserver has been removed, the ${opt} option is only"\
2728                  "provided for compatibility and will be removed in the future"
2729         ;;
2730         --enable-?*|--disable-?*)
2731             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2732             if is_in $option $COMPONENT_LIST; then
2733                 test $action = disable && action=unset
2734                 eval $action \$$(toupper ${option%s})_LIST
2735             elif is_in $option $CMDLINE_SELECT; then
2736                 $action $option
2737             else
2738                 die_unknown $opt
2739             fi
2740         ;;
2741         --list-*)
2742             NAME="${opt#--list-}"
2743             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2744             NAME=${NAME%s}
2745             eval show_list $NAME \$$(toupper $NAME)_LIST
2746         ;;
2747         --help|-h) show_help
2748         ;;
2749         --quiet|-q) quiet=yes
2750         ;;
2751         *)
2752             optname="${opt%%=*}"
2753             optname="${optname#--}"
2754             optname=$(echo "$optname" | sed 's/-/_/g')
2755             if is_in $optname $CMDLINE_SET; then
2756                 eval $optname='$optval'
2757             elif is_in $optname $CMDLINE_APPEND; then
2758                 append $optname "$optval"
2759             else
2760                 die_unknown $opt
2761             fi
2762         ;;
2763     esac
2764 done
2765
2766 for e in $env; do
2767     eval "export $e"
2768 done
2769
2770 disabled logging && logfile=/dev/null
2771
2772 # Die early if licensing-related configure options are incompatible.
2773 die_license_disabled() {
2774     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2775 }
2776
2777 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
2778 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2779 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2780
2781 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2782
2783 # Disable all the library-specific components if the library itself
2784 # is disabled, see AVCODEC_LIST and following _LIST variables.
2785
2786 disable_components(){
2787     disabled ${1} && disable $(
2788         eval components="\$$(toupper ${1})_COMPONENTS"
2789         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2790     )
2791 }
2792
2793 map 'disable_components $v' $LIBRARY_LIST
2794
2795 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2796 set >> $logfile
2797
2798 case "$toolchain" in
2799     *-asan)
2800         cc_default="${toolchain%-asan}"
2801         add_cflags  -fsanitize=address
2802         add_ldflags -fsanitize=address
2803     ;;
2804     *-msan)
2805         cc_default="${toolchain%-msan}"
2806         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2807         add_ldflags -fsanitize=memory
2808     ;;
2809     *-tsan)
2810         cc_default="${toolchain%-tsan}"
2811         add_cflags  -fsanitize=thread -pie
2812         add_ldflags -fsanitize=thread -pie
2813         case "$toolchain" in
2814             gcc-tsan)
2815                 add_cflags  -fPIC
2816                 add_ldflags -fPIC
2817                 ;;
2818         esac
2819     ;;
2820     *-usan)
2821         cc_default="${toolchain%-usan}"
2822         add_cflags  -fsanitize=undefined
2823         add_ldflags -fsanitize=undefined
2824         case "$toolchain" in
2825             clang-usan)
2826                 add_cflags -O1
2827                 ;;
2828         esac
2829     ;;
2830     valgrind-*)
2831         target_exec_default="valgrind"
2832         case "$toolchain" in
2833             valgrind-massif)
2834                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2835                 ;;
2836             valgrind-memcheck)
2837                 target_exec_args="--track-origins=yes --leak-check=full"
2838                 ;;
2839         esac
2840     ;;
2841     msvc)
2842         # Check whether the current MSVC version needs the C99 converter.
2843         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2844         # support enough of C99 to build libav. Default to the new
2845         # behaviour if the regexp was unable to match anything, since this
2846         # successfully parses the version number of existing supported
2847         # versions that require the converter (MSVC 2010 and 2012).
2848         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2849         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2850             cc_default="cl"
2851         else
2852             cc_default="c99wrap cl"
2853         fi
2854         ld_default="$source_path/compat/windows/mslink"
2855         nm_default="dumpbin -symbols"
2856         ar_default="lib"
2857         case "$arch" in
2858         arm*)
2859             as_default="armasm"
2860             ;;
2861         esac
2862         target_os_default="win32"
2863         # Use a relative path for TMPDIR. This makes sure all the
2864         # ffconf temp files are written with a relative path, avoiding
2865         # issues with msys/win32 path conversion for MSVC parameters
2866         # such as -Fo<file> or -out:<file>.
2867         TMPDIR=.
2868     ;;
2869     icl)
2870         cc_default="icl"
2871         ld_default="xilink"
2872         nm_default="dumpbin -symbols"
2873         ar_default="xilib"
2874         target_os_default="win32"
2875         TMPDIR=.
2876     ;;
2877     gcov)
2878         add_cflags  -fprofile-arcs -ftest-coverage
2879         add_ldflags -fprofile-arcs -ftest-coverage
2880     ;;
2881     llvm-cov)
2882         add_cflags -fprofile-arcs -ftest-coverage
2883         add_ldflags --coverage
2884     ;;
2885     hardened)
2886         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2887         add_cflags   -fno-strict-overflow -fstack-protector-all
2888         add_ldflags  -Wl,-z,relro -Wl,-z,now
2889     ;;
2890     ?*)
2891         die "Unknown toolchain $toolchain"
2892     ;;
2893 esac
2894
2895 test -n "$cross_prefix" && enable cross_compile
2896
2897 if enabled cross_compile; then
2898     test -n "$arch" && test -n "$target_os" ||
2899         die "Must specify target arch and OS when cross-compiling"
2900 fi
2901
2902 ar_default="${cross_prefix}${ar_default}"
2903 cc_default="${cross_prefix}${cc_default}"
2904 occ_default="${cross_prefix}${occ_default}"
2905 nm_default="${cross_prefix}${nm_default}"
2906 pkg_config_default="${cross_prefix}${pkg_config_default}"
2907 ranlib="${cross_prefix}${ranlib}"
2908 strip="${cross_prefix}${strip}"
2909
2910 sysinclude_default="${sysroot}/usr/include"
2911
2912 set_default arch cc pkg_config sysinclude target_exec target_os
2913 enabled cross_compile || host_cc_default=$cc
2914 set_default host_cc
2915
2916 if ! $pkg_config --version >/dev/null 2>&1; then
2917     warn "$pkg_config not found, library detection may fail."
2918     pkg_config=false
2919 fi
2920
2921 exesuf() {
2922     case $1 in
2923         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2924     esac
2925 }
2926
2927 EXESUF=$(exesuf $target_os)
2928 HOSTEXESUF=$(exesuf $host_os)
2929
2930 # set temporary file name
2931 : ${TMPDIR:=$TEMPDIR}
2932 : ${TMPDIR:=$TMP}
2933 : ${TMPDIR:=/tmp}
2934
2935 if ! check_cmd mktemp -u XXXXXX; then
2936     # simple replacement for missing mktemp
2937     # NOT SAFE FOR GENERAL USE
2938     mktemp(){
2939         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2940     }
2941 fi
2942
2943 tmpfile(){
2944     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2945         (set -C; exec > $tmp) 2>/dev/null ||
2946         die "Unable to create temporary file in $TMPDIR."
2947     append TMPFILES $tmp
2948     eval $1=$tmp
2949 }
2950
2951 trap 'rm -f -- $TMPFILES' EXIT
2952
2953 tmpfile TMPASM .asm
2954 tmpfile TMPC   .c
2955 tmpfile TMPE   $EXESUF
2956 tmpfile TMPH   .h
2957 tmpfile TMPO   .o
2958 tmpfile TMPS   .S
2959 tmpfile TMPSH  .sh
2960 tmpfile TMPV   .ver
2961
2962 unset -f mktemp
2963
2964 chmod +x $TMPE
2965
2966 # make sure we can execute files in $TMPDIR
2967 cat > $TMPSH 2>> $logfile <<EOF
2968 #! /bin/sh
2969 EOF
2970 chmod +x $TMPSH >> $logfile 2>&1
2971 if ! $TMPSH >> $logfile 2>&1; then
2972     cat <<EOF
2973 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2974 variable to another directory and make sure that it is not mounted noexec.
2975 EOF
2976     die "Sanity test failed."
2977 fi
2978
2979 armasm_flags(){
2980     for flag; do
2981         case $flag in
2982             # Filter out MSVC cl.exe options from cflags that shouldn't
2983             # be passed to gas-preprocessor
2984             -M[TD]*)                                            ;;
2985             *)                  echo $flag                      ;;
2986         esac
2987    done
2988 }
2989
2990 ccc_flags(){
2991     for flag; do
2992         case $flag in
2993             -std=c99)           echo -c99                       ;;
2994             -mcpu=*)            echo -arch ${flag#*=}           ;;
2995             -mieee)             echo -ieee                      ;;
2996             -O*|-fast)          echo $flag                      ;;
2997             -fno-math-errno)    echo -assume nomath_errno       ;;
2998             -g)                 echo -g3                        ;;
2999             -Wall)              echo -msg_enable level2         ;;
3000             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3001             -Wl,*)              echo $flag                      ;;
3002             -f*|-W*)                                            ;;
3003             *)                  echo $flag                      ;;
3004         esac
3005    done
3006 }
3007
3008 cparser_flags(){
3009     for flag; do
3010         case $flag in
3011             -Wno-switch)             echo -Wno-switch-enum ;;
3012             -Wno-format-zero-length) ;;
3013             -Wdisabled-optimization) ;;
3014             -Wno-pointer-sign)       echo -Wno-other ;;
3015             *)                       echo $flag ;;
3016         esac
3017     done
3018 }
3019
3020 msvc_common_flags(){
3021     for flag; do
3022         case $flag in
3023             # In addition to specifying certain flags under the compiler
3024             # specific filters, they must be specified here as well or else the
3025             # generic catch all at the bottom will print the original flag.
3026             -Wall)                ;;
3027             -std=c99)             ;;
3028             # Common flags
3029             -fomit-frame-pointer) ;;
3030             -g)                   echo -Z7 ;;
3031             -fno-math-errno)      ;;
3032             -fno-common)          ;;
3033             -fno-signed-zeros)    ;;
3034             -fPIC)                ;;
3035             -mthumb)              ;;
3036             -march=*)             ;;
3037             -lz)                  echo zlib.lib ;;
3038             -lavicap32)           echo vfw32.lib user32.lib ;;
3039             -lx264)               echo libx264.lib ;;
3040             -l*)                  echo ${flag#-l}.lib ;;
3041             -L*)                  echo -libpath:${flag#-L} ;;
3042             *)                    echo $flag ;;
3043         esac
3044     done
3045 }
3046
3047 msvc_flags(){
3048     msvc_common_flags "$@"
3049     for flag; do
3050         case $flag in
3051             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3052                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3053                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3054                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3055         esac
3056     done
3057 }
3058
3059 icl_flags(){
3060     msvc_common_flags "$@"
3061     for flag; do
3062         case $flag in
3063             # Despite what Intel's documentation says -Wall, which is supported
3064             # on Windows, does enable remarks so disable them here.
3065             -Wall)                echo $flag -Qdiag-disable:remark ;;
3066             -std=c99)             echo -Qstd=c99 ;;
3067         esac
3068     done
3069 }
3070
3071 pgi_flags(){
3072     for flag; do
3073         case $flag in
3074             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3075             -fomit-frame-pointer) echo -Mnoframe ;;
3076             -g)                   echo -gopt ;;
3077             *)                    echo $flag ;;
3078         esac
3079     done
3080 }
3081
3082 suncc_flags(){
3083     for flag; do
3084         case $flag in
3085             -march=*|-mcpu=*)
3086                 case "${flag#*=}" in
3087                     native)                   echo -xtarget=native       ;;
3088                     v9|niagara)               echo -xarch=sparc          ;;
3089                     ultrasparc)               echo -xarch=sparcvis       ;;
3090                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3091                     i586|pentium)             echo -xchip=pentium        ;;
3092                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3093                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3094                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3095                     pentium4*)          echo -xtarget=pentium4           ;;
3096                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3097                     *-sse3)             echo -xarch=sse3                 ;;
3098                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3099                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3100                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3101                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3102                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3103                     k8|opteron|athlon64|athlon-fx)
3104                                                echo -xarch=sse2a         ;;
3105                     athlon*)                   echo -xarch=pentium_proa  ;;
3106                 esac
3107                 ;;
3108             -std=c99)             echo -xc99              ;;
3109             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3110             -fPIC)                echo -KPIC -xcode=pic32 ;;
3111             -W*,*)                echo $flag              ;;
3112             -f*-*|-W*|-mimpure-text)                      ;;
3113             -shared)              echo -G                 ;;
3114             *)                    echo $flag              ;;
3115         esac
3116     done
3117 }
3118
3119 tms470_flags(){
3120     for flag; do
3121         case $flag in
3122             -march=*|-mcpu=*)
3123                 case "${flag#*=}" in
3124                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3125                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3126                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3127                     armv6*|arm11*)          echo -mv=6   ;;
3128                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3129                                             echo -mv=5e  ;;
3130                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3131                 esac
3132                 ;;
3133             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3134             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3135             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3136             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3137             -msoft-float)   echo --float_support=vfplib       ;;
3138             -O[0-3]|-mf=*)  echo $flag                        ;;
3139             -g)             echo -g -mn                       ;;
3140             -pds=*)         echo $flag                        ;;
3141             -D*|-I*)        echo $flag                        ;;
3142             --gcc|--abi=*)  echo $flag                        ;;
3143             -me)            echo $flag                        ;;
3144         esac
3145     done
3146 }
3147
3148 probe_cc(){
3149     pfx=$1
3150     _cc=$2
3151
3152     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3153     unset _ld_o _ldflags _ld_lib _ld_path
3154     unset _depflags _DEPCMD _DEPFLAGS
3155     _flags_filter=echo
3156
3157     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3158         _type=llvm_gcc
3159         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3160         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3161         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3162         _cflags_speed='-O3'
3163         _cflags_size='-Os'
3164     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3165         _type=gcc
3166         gcc_version=$($_cc --version | head -n1)
3167         gcc_basever=$($_cc -dumpversion)
3168         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3169         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3170         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3171         if ! $_cc -dumpversion | grep -q '^2\.'; then
3172             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3173         fi
3174         _cflags_speed='-O3'
3175         _cflags_size='-Os'
3176     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3177         _type=icc
3178         _ident=$($_cc --version | head -n1)
3179         _depflags='-MMD'
3180         _cflags_speed='-O3'
3181         _cflags_size='-Os'
3182         _cflags_noopt='-O1'
3183     elif $_cc -v 2>&1 | grep -q xlc; then
3184         _type=xlc
3185         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3186         _cflags_speed='-O5'
3187         _cflags_size='-O5 -qcompact'
3188     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3189         _type=ccc
3190         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3191         _DEPFLAGS='-M'
3192         _cflags_speed='-fast'
3193         _cflags_size='-O1'
3194         _flags_filter=ccc_flags
3195     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3196         test -d "$sysroot" || die "No valid sysroot specified."
3197         _type=armcc
3198         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3199         armcc_conf="$PWD/armcc.conf"
3200         $_cc --arm_linux_configure                 \
3201              --arm_linux_config_file="$armcc_conf" \
3202              --configure_sysroot="$sysroot"        \
3203              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3204              die "Error creating armcc configuration file."
3205         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3206         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3207         as_default="${cross_prefix}gcc"
3208         _depflags='-MMD'
3209         _cflags_speed='-O3'
3210         _cflags_size='-Os'
3211     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3212         _type=tms470
3213         _ident=$($_cc -version | head -n1 | tr -s ' ')
3214         _flags='--gcc --abi=eabi -me'
3215         _cc_e='-ppl -fe=$@'
3216         _cc_o='-fe=$@'
3217         _depflags='-ppa -ppd=$(@:.o=.d)'
3218         _cflags_speed='-O3 -mf=5'
3219         _cflags_size='-O3 -mf=2'
3220         _flags_filter=tms470_flags
3221     elif $_cc -v 2>&1 | grep -q clang; then
3222         _type=clang
3223         _ident=$($_cc --version 2>/dev/null | head -n1)
3224         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3225         _cflags_speed='-O3'
3226         _cflags_size='-Os'
3227     elif $_cc -V 2>&1 | grep -q Sun; then
3228         _type=suncc
3229         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3230         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3231         _DEPFLAGS='-xM1 -xc99'
3232         _ldflags='-std=c99'
3233         _cflags_speed='-O5'
3234         _cflags_size='-O5 -xspace'
3235         _flags_filter=suncc_flags
3236     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3237         _type=pathscale
3238         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3239         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3240         _cflags_speed='-O2'
3241         _cflags_size='-Os'
3242         _flags_filter='filter_out -Wdisabled-optimization'
3243     elif $_cc -v 2>&1 | grep -q Open64; then
3244         _type=open64
3245         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3246         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3247         _cflags_speed='-O2'
3248         _cflags_size='-Os'
3249         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3250     elif $_cc -V 2>&1 | grep -q Portland; then
3251         _type=pgi
3252         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3253         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3254         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3255         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3256         _cflags_noopt="-O1"
3257         _flags_filter=pgi_flags
3258     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3259         _type=armasm
3260         _ident=$($_cc | head -n1)
3261         # 4509: "This form of conditional instruction is deprecated"
3262         _flags="-nologo -ignore 4509"
3263         _flags_filter=armasm_flags
3264     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3265         _type=msvc
3266         _ident=$($_cc 2>&1 | head -n1)
3267         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3268         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3269         _cflags_speed="-O2"
3270         _cflags_size="-O1"
3271         if $_cc -nologo- 2>&1 | grep -q Linker; then
3272             _ld_o='-out:$@'
3273         else
3274             _ld_o='-Fe$@'
3275         fi
3276         _cc_o='-Fo$@'
3277         _cc_e='-P -Fi$@'
3278         _flags_filter=msvc_flags
3279         _ld_lib='lib%.a'
3280         _ld_path='-libpath:'
3281         _flags='-nologo'
3282     elif $_cc 2>&1 | grep -q Intel; then
3283         _type=icl
3284         _ident=$($_cc 2>&1 | head -n1)
3285         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3286         # Not only is O3 broken on 13.x+ but it is slower on all previous
3287         # versions (tested) as well.
3288         _cflags_speed="-O2"
3289         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3290         if $_cc 2>&1 | grep -q Linker; then
3291             _ld_o='-out:$@'
3292         else
3293             _ld_o='-Fe$@'
3294         fi
3295         _cc_o='-Fo$@'
3296         _cc_e='-P'
3297         _flags_filter=icl_flags
3298         _ld_lib='lib%.a'
3299         _ld_path='-libpath:'
3300         # -Qdiag-error to make icl error when seeing certain unknown arguments
3301         _flags='-nologo -Qdiag-error:4044,10157'
3302         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3303         # with MSVC which enables it by default.
3304         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3305     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3306         # lld can emulate multiple different linkers; in ms link.exe mode,
3307         # the -? parameter gives the help output which contains an identifyable
3308         # string, while it gives an error in other modes.
3309         _type=lld-link
3310         # The link.exe mode doesn't have a switch for getting the version,
3311         # but we can force it back to gnu mode and get the version from there.
3312         _ident=$($_cc -flavor gnu --version 2>/dev/null)
3313         _ld_o='-out:$@'
3314         _flags_filter=msvc_flags
3315         _ld_lib='lib%.a'
3316         _ld_path='-libpath:'
3317     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3318         _type=cparser
3319         _ident=$($_cc --version | head -n1)
3320         _depflags='-MMD'
3321         _cflags_speed='-O4'
3322         _cflags_size='-O2'
3323         _flags_filter=cparser_flags
3324     fi
3325
3326     eval ${pfx}_type=\$_type
3327     eval ${pfx}_ident=\$_ident
3328 }
3329
3330 set_ccvars(){
3331     eval ${1}_C=\${_cc_c-\${${1}_C}}
3332     eval ${1}_E=\${_cc_e-\${${1}_E}}
3333     eval ${1}_O=\${_cc_o-\${${1}_O}}
3334
3335     if [ -n "$_depflags" ]; then
3336         eval ${1}_DEPFLAGS=\$_depflags
3337     else
3338         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3339         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3340         eval DEP${1}FLAGS=\$_flags
3341     fi
3342 }
3343
3344 probe_cc cc "$cc"
3345 cflags_filter=$_flags_filter
3346 cflags_speed=$_cflags_speed
3347 cflags_size=$_cflags_size
3348 cflags_noopt=$_cflags_noopt
3349 add_cflags $_flags $_cflags
3350 cc_ldflags=$_ldflags
3351 set_ccvars CC
3352
3353 probe_cc hostcc "$host_cc"
3354 host_cflags_filter=$_flags_filter
3355 add_host_cflags  $_flags $_cflags
3356 set_ccvars HOSTCC
3357
3358 test -n "$cc_type" && enable $cc_type ||
3359     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3360
3361 : ${as_default:=$cc}
3362 : ${objcc_default:=$cc}
3363 : ${dep_cc_default:=$cc}
3364 : ${ld_default:=$cc}
3365 : ${host_ld_default:=$host_cc}
3366 set_default ar as objcc dep_cc ld host_ld
3367
3368 probe_cc as "$as"
3369 asflags_filter=$_flags_filter
3370 add_asflags $_flags $_cflags
3371 set_ccvars AS
3372
3373 probe_cc objcc "$objcc"
3374 objcflags_filter=$_flags_filter
3375 add_objcflags $_flags $_cflags
3376 set_ccvars OBJC
3377
3378 probe_cc ld "$ld"
3379 ldflags_filter=$_flags_filter
3380 add_ldflags $_flags $_ldflags
3381 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3382 LD_O=${_ld_o-$LD_O}
3383 LD_LIB=${_ld_lib-$LD_LIB}
3384 LD_PATH=${_ld_path-$LD_PATH}
3385
3386 probe_cc hostld "$host_ld"
3387 host_ldflags_filter=$_flags_filter
3388 add_host_ldflags $_flags $_ldflags
3389 HOSTLD_O=${_ld_o-$HOSTLD_O}
3390
3391 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3392     probe_cc depcc "$dep_cc"
3393     CCDEP=${_DEPCMD:-$DEPCMD}
3394     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3395     DEPCCFLAGS=$_flags
3396 fi
3397
3398 if $ar 2>&1 | grep -q Microsoft; then
3399     arflags="-nologo"
3400     ar_o='-out:$@'
3401 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3402     arflags="rq"
3403     ar_o='$@'
3404 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3405     arflags='-Xany -r -c'
3406     ar_o='$@'
3407 else
3408     arflags="rc"
3409     ar_o='$@'
3410 fi
3411
3412 add_cflags $extra_cflags
3413 add_objcflags $extra_objcflags
3414 add_asflags $extra_cflags
3415
3416 if test -n "$sysroot"; then
3417     case "$cc_type" in
3418         gcc|llvm_gcc|clang)
3419             add_cppflags --sysroot="$sysroot"
3420             add_ldflags --sysroot="$sysroot"
3421         ;;
3422         tms470)
3423             add_cppflags -I"$sysinclude"
3424             add_ldflags  --sysroot="$sysroot"
3425         ;;
3426     esac
3427 fi
3428
3429 if test "$cpu" = host; then
3430     enabled cross_compile &&
3431         die "--cpu=host makes no sense when cross-compiling."
3432
3433     case "$cc_type" in
3434         gcc|llvm_gcc)
3435             check_native(){
3436                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3437                 sed -n "/cc1.*$1=/{
3438                             s/.*$1=\\([^ ]*\\).*/\\1/
3439                             p
3440                             q
3441                         }" $TMPE
3442             }
3443             cpu=$(check_native -march || check_native -mcpu)
3444         ;;
3445     esac
3446
3447     test "${cpu:-host}" = host &&
3448         die "--cpu=host not supported with compiler $cc"
3449 fi
3450
3451 # Deal with common $arch aliases
3452 case "$arch" in
3453     aarch64|arm64)
3454         arch="aarch64"
3455     ;;
3456     arm*)
3457         arch="arm"
3458     ;;
3459     mips*|IP*)
3460         case "$arch" in
3461         *el)
3462             add_cppflags -EL
3463             add_ldflags -EL
3464         ;;
3465         *eb)
3466             add_cppflags -EB
3467             add_ldflags -EB
3468         ;;
3469         esac
3470         arch="mips"
3471     ;;
3472     parisc*|hppa*)
3473         arch="parisc"
3474     ;;
3475     "Power Macintosh"|ppc*|powerpc*)
3476         arch="ppc"
3477     ;;
3478     s390|s390x)
3479         arch="s390"
3480     ;;
3481     sh4|sh)
3482         arch="sh4"
3483     ;;
3484     sun4u|sparc*)
3485         arch="sparc"
3486     ;;
3487     tilegx|tile-gx)
3488         arch="tilegx"
3489     ;;
3490     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3491         arch="x86"
3492     ;;
3493 esac
3494
3495 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3496 enable $arch
3497
3498 # Add processor-specific flags
3499 if enabled aarch64; then
3500
3501     case $cpu in
3502         armv*)
3503             cpuflags="-march=$cpu"
3504         ;;
3505         *)
3506             cpuflags="-mcpu=$cpu"
3507         ;;
3508     esac
3509
3510 elif enabled alpha; then
3511
3512     cpuflags="-mcpu=$cpu"
3513
3514 elif enabled arm; then
3515
3516     check_arm_arch() {
3517         check_cpp_condition stddef.h \
3518             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3519             $cpuflags
3520     }
3521
3522     probe_arm_arch() {
3523         if   check_arm_arch 4;        then echo armv4
3524         elif check_arm_arch 4T;       then echo armv4t
3525         elif check_arm_arch 5;        then echo armv5
3526         elif check_arm_arch 5E;       then echo armv5e
3527         elif check_arm_arch 5T;       then echo armv5t
3528         elif check_arm_arch 5TE;      then echo armv5te
3529         elif check_arm_arch 5TEJ;     then echo armv5te
3530         elif check_arm_arch 6;        then echo armv6
3531         elif check_arm_arch 6J;       then echo armv6j
3532         elif check_arm_arch 6K;       then echo armv6k
3533         elif check_arm_arch 6Z;       then echo armv6z
3534         elif check_arm_arch 6ZK;      then echo armv6zk
3535         elif check_arm_arch 6T2;      then echo armv6t2
3536         elif check_arm_arch 7;        then echo armv7
3537         elif check_arm_arch 7A  7_A;  then echo armv7-a
3538         elif check_arm_arch 7S;       then echo armv7-a
3539         elif check_arm_arch 7R  7_R;  then echo armv7-r
3540         elif check_arm_arch 7M  7_M;  then echo armv7-m
3541         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3542         elif check_arm_arch 8A  8_A;  then echo armv8-a
3543         fi
3544     }
3545
3546     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3547
3548     case $cpu in
3549         armv*)
3550             cpuflags="-march=$cpu"
3551             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3552         ;;
3553         *)
3554             cpuflags="-mcpu=$cpu"
3555             case $cpu in
3556                 cortex-a*)                               subarch=armv7a  ;;
3557                 cortex-r*)                               subarch=armv7r  ;;
3558                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3559                 arm11*)                                  subarch=armv6   ;;
3560                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3561                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3562                 *)                             subarch=$(probe_arm_arch) ;;
3563             esac
3564         ;;
3565     esac
3566
3567     case "$subarch" in
3568         armv5t*)    enable fast_clz                ;;
3569         armv[6-8]*) enable fast_clz fast_unaligned ;;
3570     esac
3571
3572 elif enabled avr32; then
3573
3574     case $cpu in
3575         ap7[02]0[0-2])
3576             subarch="avr32_ap"
3577             cpuflags="-mpart=$cpu"
3578         ;;
3579         ap)
3580             subarch="avr32_ap"
3581             cpuflags="-march=$cpu"
3582         ;;
3583         uc3[ab]*)
3584             subarch="avr32_uc"
3585             cpuflags="-mcpu=$cpu"
3586         ;;
3587         uc)
3588             subarch="avr32_uc"
3589             cpuflags="-march=$cpu"
3590         ;;
3591     esac
3592
3593 elif enabled bfin; then
3594
3595     cpuflags="-mcpu=$cpu"
3596
3597 elif enabled mips; then
3598
3599     cpuflags="-march=$cpu"
3600
3601 elif enabled ppc; then
3602
3603     disable ldbrx
3604
3605     case $(tolower $cpu) in
3606         601|ppc601|powerpc601)
3607             cpuflags="-mcpu=601"
3608             disable altivec
3609         ;;
3610         603*|ppc603*|powerpc603*)
3611             cpuflags="-mcpu=603"
3612             disable altivec
3613         ;;
3614         604*|ppc604*|powerpc604*)
3615             cpuflags="-mcpu=604"
3616             disable altivec
3617         ;;
3618         g3|75*|ppc75*|powerpc75*)
3619             cpuflags="-mcpu=750"
3620             disable altivec
3621         ;;
3622         g4|745*|ppc745*|powerpc745*)
3623             cpuflags="-mcpu=7450"
3624             disable vsx
3625         ;;
3626         74*|ppc74*|powerpc74*)
3627             cpuflags="-mcpu=7400"
3628             disable vsx
3629         ;;
3630         g5|970|ppc970|powerpc970)
3631             cpuflags="-mcpu=970"
3632             disable vsx
3633         ;;
3634         power[3-6]*)
3635             cpuflags="-mcpu=$cpu"
3636             disable vsx
3637         ;;
3638         power[7-8]*)
3639             cpuflags="-mcpu=$cpu"
3640             enable ldbrx
3641         ;;
3642         cell)
3643             cpuflags="-mcpu=cell"
3644             enable ldbrx
3645             disable vsx
3646         ;;
3647         e500mc)
3648             cpuflags="-mcpu=e500mc"
3649             disable altivec
3650         ;;
3651         e500v2)
3652             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3653             disable altivec
3654             disable dcbzl
3655         ;;
3656         e500)
3657             cpuflags="-mcpu=8540 -mhard-float"
3658             disable altivec
3659             disable dcbzl
3660         ;;
3661     esac
3662
3663 elif enabled sparc; then
3664
3665     case $cpu in
3666         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3667             cpuflags="-mcpu=$cpu"
3668         ;;
3669         ultrasparc*|niagara[234])
3670             cpuflags="-mcpu=$cpu"
3671         ;;
3672     esac
3673
3674 elif enabled x86; then
3675
3676     case $cpu in
3677         i[345]86|pentium)
3678             cpuflags="-march=$cpu"
3679             disable i686
3680             disable mmx
3681         ;;
3682         # targets that do NOT support nopl and conditional mov (cmov)
3683         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3684             cpuflags="-march=$cpu"
3685             disable i686
3686         ;;
3687         # targets that do support nopl and conditional mov (cmov)
3688         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3689             cpuflags="-march=$cpu"
3690             enable i686
3691             enable fast_cmov
3692         ;;
3693         # targets that do support conditional mov but on which it's slow
3694         pentium4|pentium4m|prescott|nocona)
3695             cpuflags="-march=$cpu"
3696             enable i686
3697             disable fast_cmov
3698         ;;
3699     esac
3700
3701 fi
3702
3703 if [ "$cpu" != generic ]; then
3704     add_cflags  $cpuflags
3705     add_asflags $cpuflags
3706     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3707 fi
3708
3709 # compiler sanity check
3710 check_exec <<EOF
3711 int main(void){ return 0; }
3712 EOF
3713 if test "$?" != 0; then
3714     echo "$cc is unable to create an executable file."
3715     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3716         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3717         echo "Only do this if you know what cross compiling means."
3718     fi
3719     die "C compiler test failed."
3720 fi
3721
3722 add_cppflags -D_ISOC99_SOURCE
3723
3724 # some compilers silently accept -std=c11, so we also need to check that the
3725 # version macro is defined properly
3726 if test_cflags_cpp -std=c11 "__STDC_VERSION__ >= 201112L"; then
3727     add_cflags -std=c11
3728 else
3729     check_cflags -std=c99
3730 fi
3731
3732 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3733 #include <stdlib.h>
3734 EOF
3735 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3736 #include <stdlib.h>
3737 EOF
3738
3739 add_host_cppflags -D_ISOC99_SOURCE
3740 check_host_cflags -std=c99
3741 check_host_cflags -Wall
3742 check_host_cflags -O3
3743
3744 check_64bit(){
3745     arch32=$1
3746     arch64=$2
3747     expr=$3
3748     check_code cc "" "int test[2*($expr) - 1]" &&
3749         subarch=$arch64 || subarch=$arch32
3750 }
3751
3752 case "$arch" in
3753     aarch64|alpha|ia64)
3754         spic=$shared
3755     ;;
3756     mips)
3757         check_64bit mips mips64 '_MIPS_SIM > 1'
3758         spic=$shared
3759     ;;
3760     parisc)
3761         check_64bit parisc parisc64 'sizeof(void *) > 4'
3762         spic=$shared
3763     ;;
3764     ppc)
3765         check_64bit ppc ppc64 'sizeof(void *) > 4'
3766         spic=$shared
3767     ;;
3768     s390)
3769         check_64bit s390 s390x 'sizeof(void *) > 4'
3770         spic=$shared
3771     ;;
3772     sparc)
3773         check_64bit sparc sparc64 'sizeof(void *) > 4'
3774         spic=$shared
3775     ;;
3776     x86)
3777         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3778         if test "$subarch" = "x86_64"; then
3779             spic=$shared
3780         fi
3781     ;;
3782 esac
3783
3784 enable $subarch
3785 enabled spic && enable_weak pic
3786
3787 # OS specific
3788 case $target_os in
3789     aix)
3790         SHFLAGS=-shared
3791         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3792         enabled shared && add_ldflags -Wl,-brtl
3793         ;;
3794     android)
3795         disable symver
3796         enable section_data_rel_ro
3797         SLIB_INSTALL_NAME='$(SLIBNAME)'
3798         SLIB_INSTALL_LINKS=
3799         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3800         ;;
3801     haiku)
3802         prefix_default="/boot/common"
3803         network_extralibs="-lnetwork"
3804         host_libs=
3805         ;;
3806     sunos)
3807         SHFLAGS='-shared -Wl,-h,$$(@F)'
3808         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3809         network_extralibs="-lsocket -lnsl"
3810         # When using suncc to build, the Solaris linker will mark
3811         # an executable with each instruction set encountered by
3812         # the Solaris assembler.  As our libraries contain their own
3813         # guards for processor-specific code, instead suppress
3814         # generation of the HWCAPS ELF section on Solaris x86 only.
3815         enabled_all suncc x86 &&
3816             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3817             add_ldflags -Wl,-M,mapfile
3818         nm_default='nm -P -g'
3819         version_script='-M'
3820         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3821         ;;
3822     netbsd)
3823         disable symver
3824         oss_indev_extralibs="-lossaudio"
3825         oss_outdev_extralibs="-lossaudio"
3826         ;;
3827     openbsd|bitrig)
3828         disable symver
3829         SHFLAGS='-shared'
3830         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3831         SLIB_INSTALL_LINKS=
3832         oss_indev_extralibs="-lossaudio"
3833         oss_outdev_extralibs="-lossaudio"
3834         ;;
3835     dragonfly)
3836         disable symver
3837         ;;
3838     freebsd)
3839         ;;
3840     bsd/os)
3841         add_extralibs -lpoll -lgnugetopt
3842         ;;
3843     darwin)
3844         enabled ppc && add_asflags -force_cpusubtype_ALL
3845         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3846         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3847         add_ldflags -Wl,-dynamic,-search_paths_first
3848         SLIBSUF=".dylib"
3849         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3850         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3851         objformat="macho"
3852         enabled x86_64 && objformat="macho64"
3853         enabled_any pic shared ||
3854             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3855         check_header dispatch/dispatch.h &&
3856             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3857         ;;
3858     msys*)
3859         die "Native MSYS builds are discouraged, please use the MINGW environment."
3860         ;;
3861     mingw32*|mingw64*)
3862         if test $target_os = "mingw32ce"; then
3863             disable network
3864         else
3865             target_os=mingw32
3866         fi
3867         LIBTARGET=i386
3868         if enabled x86_64; then
3869             LIBTARGET="i386:x86-64"
3870         elif enabled arm; then
3871             LIBTARGET=arm-wince
3872         fi
3873         check_ldflags -Wl,--nxcompat
3874         check_ldflags -Wl,--dynamicbase
3875         shlibdir_default="$bindir_default"
3876         SLIBPREF=""
3877         SLIBSUF=".dll"
3878         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3879         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3880         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3881         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3882         SLIB_INSTALL_LINKS=
3883         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3884         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3885         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3886         objformat="win32"
3887         dlltool="${cross_prefix}dlltool"
3888         ranlib=:
3889         enable dos_paths
3890         ;;
3891     win32|win64)
3892         disable symver
3893         if enabled shared; then
3894             # Link to the import library instead of the normal static library
3895             # for shared libs.
3896             LD_LIB='%.lib'
3897             # Cannot build both shared and static libs with MSVC or icl.
3898             disable static
3899         fi
3900         shlibdir_default="$bindir_default"
3901         SLIBPREF=""
3902         SLIBSUF=".dll"
3903         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3904         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3905         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3906         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3907         SLIB_INSTALL_LINKS=
3908         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3909         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3910         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3911         objformat="win32"
3912         ranlib=:
3913         enable dos_paths
3914         ;;
3915     cygwin*)
3916         target_os=cygwin
3917         shlibdir_default="$bindir_default"
3918         SLIBPREF="cyg"
3919         SLIBSUF=".dll"
3920         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3921         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3922         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3923         SLIB_INSTALL_LINKS=
3924         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3925         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3926         objformat="win32"
3927         enable dos_paths
3928         ;;
3929     *-dos|freedos|opendos)
3930         network_extralibs="-lsocket"
3931         objformat="coff"
3932         enable dos_paths
3933         add_cppflags -U__STRICT_ANSI__
3934         ;;
3935     linux)
3936         enable dv1394
3937         enable section_data_rel_ro
3938         ;;
3939     irix*)
3940         target_os=irix
3941         ranlib="echo ignoring ranlib"
3942         ;;
3943     os/2*)
3944         ln_s="cp -f"
3945         objformat="aout"
3946         add_cppflags -D_GNU_SOURCE
3947         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3948         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3949         LIBSUF="_s.a"
3950         SLIBPREF=""
3951         SLIBSUF=".dll"
3952         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3953         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3954         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3955             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3956             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3957             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3958             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
3959         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3960             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3961         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3962         enable dos_paths
3963         ;;
3964     gnu/kfreebsd)
3965         add_cppflags -D_BSD_SOURCE
3966         ;;
3967     gnu)
3968         ;;
3969     qnx)
3970         add_cppflags -D_QNX_SOURCE
3971         network_extralibs="-lsocket"
3972         ;;
3973     symbian)
3974         SLIBSUF=".dll"
3975         enable dos_paths
3976         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3977         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3978         add_ldflags -Wl,--target1-abs,--no-undefined \
3979                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3980                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3981         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3982                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3983                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3984         ;;
3985     osf1)
3986         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3987         ;;
3988     minix)
3989         ;;
3990     plan9)
3991         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3992                      -D_REENTRANT_SOURCE        \
3993                      -D_RESEARCH_SOURCE         \
3994                      -DFD_SETSIZE=96            \
3995                      -DHAVE_SOCK_OPTS
3996         add_compat strtod.o strtod=avpriv_strtod
3997         network_extralibs='-lbsd'
3998         exeobjs=compat/plan9/main.o
3999         cp_f='cp'
4000         ;;
4001     none)
4002         ;;
4003     *)
4004         die "Unknown OS '$target_os'."
4005         ;;
4006 esac
4007
4008 # determine libc flavour
4009
4010 probe_libc(){
4011     pfx=$1
4012     pfx_no_=${pfx%_}
4013     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4014     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4015         eval ${pfx}libc_type=uclibc
4016         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4017     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4018         eval ${pfx}libc_type=glibc
4019         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4020     # MinGW headers can be installed on Cygwin, so check for newlib first.
4021     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4022         eval ${pfx}libc_type=newlib
4023         add_${pfx}cppflags -U__STRICT_ANSI__
4024     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4025     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4026         eval ${pfx}libc_type=mingw64
4027         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4028         eval test \$${pfx_no_}cc_type = "gcc" &&
4029             add_${pfx}cppflags -D__printf__=__gnu_printf__
4030     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4031          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4032         eval ${pfx}libc_type=mingw32
4033         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4034             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4035             die "ERROR: MinGW32 runtime version must be >= 3.15."
4036         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4037         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700__" &&
4038             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
4039         eval test \$${pfx_no_}cc_type = "gcc" &&
4040             add_${pfx}cppflags -D__printf__=__gnu_printf__
4041     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4042         eval ${pfx}libc_type=msvcrt
4043         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4044             if [ "$pfx" = host_ ]; then
4045                 add_host_cppflags -Dsnprintf=_snprintf
4046             else
4047                 add_compat strtod.o strtod=avpriv_strtod
4048                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4049                                              _snprintf=avpriv_snprintf  \
4050                                              vsnprintf=avpriv_vsnprintf
4051             fi
4052         fi
4053         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
4054         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4055         # 0x601 by default unless something else is set by the user.
4056         # This can easily lead to us detecting functions only present
4057         # in such new versions and producing binaries requiring windows 7.0.
4058         # Therefore explicitly set the default to XP unless the user has
4059         # set something else on the command line.
4060         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4061         # family. For these cases, configure is free to use any functions
4062         # found in the SDK headers by default. (Alternatively, we could force
4063         # _WIN32_WINNT to 0x0602 in that case.)
4064         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4065             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4066 #ifdef WINAPI_FAMILY
4067 #include <winapifamily.h>
4068 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4069 #error not desktop
4070 #endif
4071 #endif
4072 EOF
4073         if [ "$pfx" = "" ]; then
4074             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4075         fi
4076     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4077         eval ${pfx}libc_type=klibc
4078     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4079         eval ${pfx}libc_type=bionic
4080     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4081         eval ${pfx}libc_type=solaris
4082         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4083     else
4084         eval ${pfx}libc_type=default
4085         add_${pfx}cppflags -D_DEFAULT_SOURCE
4086     fi
4087 }
4088
4089 probe_libc
4090 test -n "$libc_type" && enable libc_$libc_type
4091 probe_libc host_
4092 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4093
4094 case $libc_type in
4095     bionic)
4096         add_compat strtod.o strtod=avpriv_strtod
4097         ;;
4098 esac
4099
4100 # hacks for compiler/libc/os combinations
4101
4102 if enabled_all tms470 libc_glibc; then
4103     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4104     add_cppflags -D__USER_LABEL_PREFIX__=
4105     add_cppflags -D__builtin_memset=memset
4106     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4107     add_cflags   -pds=48    # incompatible redefinition of macro
4108 fi
4109
4110 if enabled_all ccc libc_glibc; then
4111     add_ldflags -Wl,-z,now  # calls to libots crash without this
4112 fi
4113
4114 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4115     add_cppflags '-I\$(SRC_PATH)/compat/float'
4116
4117 esc(){
4118     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4119 }
4120
4121 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
4122
4123 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4124
4125 set_default $PATHS_LIST
4126 set_default nm
4127
4128 # we need to build at least one lib type
4129 if ! enabled_any static shared; then
4130     cat <<EOF
4131 At least one library type must be built.
4132 Specify --enable-static to build the static libraries or --enable-shared to
4133 build the shared libraries as well. To only build the shared libraries specify
4134 --disable-static in addition to --enable-shared.
4135 EOF
4136     exit 1
4137 fi
4138
4139 disabled optimizations || check_cflags -fomit-frame-pointer
4140
4141 enable_weak_pic() {
4142     disabled pic && return
4143     enable pic
4144     add_cppflags -DPIC
4145     case "$target_os" in
4146     mingw*|cygwin*)
4147         ;;
4148     *)
4149         add_cflags -fPIC
4150         ;;
4151     esac
4152     add_asflags  -fPIC
4153 }
4154
4155 enabled pic && enable_weak_pic
4156
4157 check_cc <<EOF || die "Symbol mangling check failed."
4158 int ff_extern;
4159 EOF
4160 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4161 extern_prefix=${sym%%ff_extern*}
4162
4163 check_cc <<EOF && enable_weak inline_asm
4164 void foo(void) { __asm__ volatile ("" ::); }
4165 EOF
4166
4167 _restrict=
4168 for restrict_keyword in restrict __restrict__ __restrict; do
4169     check_cc <<EOF && _restrict=$restrict_keyword && break
4170 void foo(char * $restrict_keyword p);
4171 EOF
4172 done
4173
4174 check_cc <<EOF && enable pragma_deprecated
4175 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4176 EOF
4177
4178 check_cc <<EOF && enable attribute_packed
4179 struct { int x; } __attribute__((packed)) x;
4180 EOF
4181
4182 check_cc <<EOF && enable attribute_may_alias
4183 union { int x; } __attribute__((may_alias)) x;
4184 EOF
4185
4186 check_cc <<EOF || die "endian test failed"
4187 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4188 EOF
4189 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4190
4191 check_gas() {
4192     log "check_gas using '$as' as AS"
4193     # :vararg is used on aarch64, arm and ppc altivec
4194     check_as <<EOF || return 1
4195 .macro m n, y:vararg=0
4196 \n: .int \y
4197 .endm
4198 m x
4199 EOF
4200     # .altmacro is only used in arm asm
4201     ! enabled arm || check_as <<EOF || return 1
4202 .altmacro
4203 EOF
4204     enable gnu_as
4205     return 0
4206 }
4207
4208 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4209     nogas=:
4210     enabled_any arm aarch64 && nogas=die
4211     enabled_all ppc altivec && nogas=warn
4212     as_noop=-v
4213
4214     case $as_type in
4215         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4216         gcc)  gaspp_as_type=gas ;;
4217         *)    gaspp_as_type=$as_type ;;
4218     esac
4219
4220     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4221
4222     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4223         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4224
4225     if ! check_gas ; then
4226         as=${gas:=$as}
4227         check_gas || \
4228             $nogas "GNU assembler not found, install/update gas-preprocessor"
4229     fi
4230
4231     check_as <<EOF && enable as_func
4232 .func test
4233 .endfunc
4234 EOF
4235 fi
4236
4237 check_inline_asm inline_asm_labels '"1:\n"'
4238
4239 if enabled aarch64; then
4240     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4241     # internal assembler in clang 3.3 does not support this instruction
4242     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4243     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4244
4245     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4246
4247 elif enabled alpha; then
4248
4249     check_cflags -mieee
4250
4251 elif enabled arm; then
4252
4253     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4254     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4255     enabled thumb && check_cflags -mthumb || check_cflags -marm
4256
4257     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4258         enable vfp_args
4259     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4260         enable vfp_args
4261     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4262         case "${cross_prefix:-$cc}" in
4263             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4264             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4265 __asm__ (".eabi_attribute 28, 1");
4266 int main(void) { return 0; }
4267 EOF
4268         esac
4269         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4270     fi
4271
4272     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4273     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4274     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4275     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4276     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4277     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4278
4279     [ $target_os = linux ] || [ $target_os = android ] ||
4280         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4281             $ARCH_EXT_LIST_ARM
4282
4283     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4284
4285     check_as <<EOF && enable as_dn_directive
4286 ra .dn d0.i16
4287 .unreq ra
4288 EOF
4289     check_as <<EOF && enable as_fpu_directive
4290 .fpu neon
4291 EOF
4292
4293     # llvm's integrated assembler supports .object_arch from llvm 3.5
4294     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4295 .object_arch armv4
4296 EOF
4297
4298     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4299
4300 elif enabled mips; then
4301
4302     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4303
4304     # make sure that only an instruction set is enabled
4305     disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4306
4307     if enabled mips64; then
4308         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4309             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4310                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4311     else
4312         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4313             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4314                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4315     fi
4316
4317 elif enabled parisc; then
4318
4319     if enabled gcc; then
4320         case $($cc -dumpversion) in
4321             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4322         esac
4323     fi
4324
4325 elif enabled ppc; then
4326
4327     enable local_aligned_8 local_aligned_16 local_aligned_32
4328
4329     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4330     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4331     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4332     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4333
4334     # AltiVec flags: The FSF version of GCC differs from the Apple version
4335     if enabled altivec; then
4336         check_cflags -maltivec -mabi=altivec &&
4337         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4338         check_cflags -faltivec
4339
4340         # check if our compiler supports Motorola AltiVec C API
4341         check_cc <<EOF || disable altivec
4342 $inc_altivec_h
4343 int main(void) {
4344     vector signed int v1 = (vector signed int) { 0 };
4345     vector signed int v2 = (vector signed int) { 1 };
4346     v1 = vec_add(v1, v2);
4347     return 0;
4348 }
4349 EOF
4350
4351         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4352     fi
4353
4354     if enabled vsx; then
4355         check_cflags -mvsx &&
4356         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4357     fi
4358
4359     if enabled power8; then
4360         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4361     fi
4362
4363 elif enabled x86; then
4364
4365     check_builtin rdtsc    intrin.h   "__rdtsc()"
4366     check_builtin mm_empty mmintrin.h "_mm_empty()"
4367
4368     enable local_aligned_8 local_aligned_16 local_aligned_32
4369
4370     # check whether EBP is available on x86
4371     # As 'i' is stored on the stack, this program will crash
4372     # if the base pointer is used to access it because the
4373     # base pointer is cleared in the inline assembly code.
4374     check_exec_crash <<EOF && enable ebp_available
4375 volatile int i=0;
4376 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4377 return i;
4378 EOF
4379
4380     # check whether EBX is available on x86
4381     check_inline_asm ebx_available '""::"b"(0)' &&
4382         check_inline_asm ebx_available '"":::"%ebx"'
4383
4384     # check whether xmm clobbers are supported
4385     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4386
4387     # check whether binutils is new enough to compile SSSE3/MMXEXT
4388     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4389     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4390
4391     if ! disabled_any asm mmx yasm; then
4392         if check_cmd $yasmexe --version; then
4393             enabled x86_64 && yasm_extra="-m amd64"
4394             yasm_debug="-g dwarf2"
4395         elif check_cmd nasm -v; then
4396             yasmexe=nasm
4397             yasm_debug="-g -F dwarf"
4398             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4399         fi
4400
4401         YASMFLAGS="-f $objformat $yasm_extra"
4402         enabled pic               && append YASMFLAGS "-DPIC"
4403         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4404         case "$objformat" in
4405             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4406         esac
4407
4408         check_yasm "movbe ecx, [5]" && enable yasm ||
4409             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4410         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4411         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4412         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4413         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4414         check_yasm "CPU amdnop" || disable cpunop
4415     fi
4416
4417     case "$cpu" in
4418         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4419             disable fast_clz
4420         ;;
4421     esac
4422
4423 fi
4424
4425 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4426
4427 check_ldflags -Wl,--as-needed
4428
4429 if check_func dlopen; then
4430     ldl=
4431 elif check_func dlopen -ldl; then
4432     ldl=-ldl
4433 fi
4434
4435 if ! disabled network; then
4436     check_func getaddrinfo $network_extralibs
4437     check_func inet_aton $network_extralibs
4438
4439     check_type netdb.h "struct addrinfo"
4440     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4441     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4442     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4443     check_type poll.h "struct pollfd"
4444     check_type netinet/sctp.h "struct sctp_event_subscribe"
4445     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4446     check_type netinet/in.h "struct sockaddr_in6"
4447     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4448     check_type "sys/types.h sys/socket.h" socklen_t
4449
4450     # Prefer arpa/inet.h over winsock2
4451     if check_header arpa/inet.h ; then
4452         check_func closesocket
4453     elif check_header winsock2.h ; then
4454         check_func_headers winsock2.h closesocket -lws2 &&
4455             network_extralibs="-lws2" ||
4456         { check_func_headers winsock2.h closesocket -lws2_32 &&
4457             network_extralibs="-lws2_32"; } || disable winsock2_h network
4458         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4459
4460         check_type ws2tcpip.h socklen_t
4461         check_type ws2tcpip.h "struct addrinfo"
4462         check_type ws2tcpip.h "struct group_source_req"
4463         check_type ws2tcpip.h "struct ip_mreq_source"
4464         check_type ws2tcpip.h "struct ipv6_mreq"
4465         check_type winsock2.h "struct pollfd"
4466         check_struct winsock2.h "struct sockaddr" sa_len
4467         check_type ws2tcpip.h "struct sockaddr_in6"
4468         check_type ws2tcpip.h "struct sockaddr_storage"
4469     else
4470         disable network
4471     fi
4472 fi
4473
4474 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4475 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4476 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4477 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4478
4479 case "$custom_allocator" in
4480     jemalloc)
4481         # jemalloc by default does not use a prefix
4482         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4483     ;;
4484     tcmalloc)
4485         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
4486         malloc_prefix=tc_
4487     ;;
4488 esac
4489
4490 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4491 check_func  ${malloc_prefix}memalign            && enable memalign
4492 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4493
4494 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4495     check_func_headers time.h clock_gettime ||
4496         { check_lib time.h clock_gettime -lrt && LIBRT="-lrt"; }
4497
4498 check_func  fcntl
4499 check_func  fork
4500 check_func  gethrtime
4501 check_func  getopt
4502 check_func  getrusage
4503 check_func  gettimeofday
4504 check_func  gmtime_r
4505 check_func  isatty
4506 check_func  localtime_r
4507 check_func  mach_absolute_time
4508 check_func  mkstemp
4509 check_func  mmap
4510 check_func  mprotect
4511 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4512 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt; }
4513 check_func  sched_getaffinity
4514 check_func  setrlimit
4515 check_func  strerror_r
4516 check_func  sysconf
4517 check_func  sysctl
4518 check_func  usleep
4519
4520 check_func_headers io.h setmode
4521 check_func_headers stdlib.h getenv
4522
4523 check_func_headers windows.h CoTaskMemFree -lole32
4524 check_func_headers windows.h GetProcessAffinityMask
4525 check_func_headers windows.h GetProcessTimes
4526 check_func_headers windows.h GetSystemTimeAsFileTime
4527 check_func_headers windows.h LoadLibrary
4528 check_func_headers windows.h MapViewOfFile
4529 check_func_headers windows.h SetConsoleTextAttribute
4530 check_func_headers windows.h Sleep
4531 check_func_headers windows.h VirtualAlloc
4532 check_struct windows.h "CONDITION_VARIABLE" Ptr
4533
4534 check_header direct.h
4535 check_header dlfcn.h
4536 check_header d3d11.h
4537 check_header dxva.h
4538 check_header dxva2api.h
4539 check_header io.h
4540 check_header mach/mach_time.h
4541 check_header malloc.h
4542 check_header poll.h
4543 check_header sys/mman.h
4544 check_header sys/param.h
4545 check_header sys/resource.h
4546 check_header sys/select.h
4547 check_header sys/time.h
4548 check_header sys/un.h
4549 check_header unistd.h
4550 check_header valgrind/valgrind.h
4551 check_header vdpau/vdpau.h
4552 check_header vdpau/vdpau_x11.h
4553 check_header VideoDecodeAcceleration/VDADecoder.h
4554 check_header windows.h
4555 check_header X11/extensions/XvMClib.h
4556
4557 # it seems there are versions of clang in some distros that try to use the
4558 # gcc headers, which explodes for stdatomic
4559 # so we also check that atomics actually work here
4560 check_builtin stdatomic_h stdatomic.h "atomic_int foo; atomic_store(&foo, 0)"
4561
4562 check_lib "windows.h shellapi.h" CommandLineToArgvW   -lshell32
4563 check_lib "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
4564 check_lib "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
4565
4566 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4567
4568 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4569 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4570 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4571
4572 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
4573 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
4574 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
4575 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
4576 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
4577
4578 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
4579
4580 if ! disabled w32threads && ! enabled pthreads; then
4581     check_func_headers "windows.h process.h" _beginthreadex &&
4582         enable w32threads || disable w32threads
4583 fi
4584
4585 # check for some common methods of building with pthread support
4586 # do this before the optional library checks as some of them require pthreads
4587 if ! disabled pthreads && ! enabled w32threads; then
4588     enable pthreads
4589     if check_func pthread_join -pthread; then
4590         add_cflags -pthread
4591         add_extralibs -pthread
4592     elif check_func pthread_join -pthreads; then
4593         add_cflags -pthreads
4594         add_extralibs -pthreads
4595     elif check_func pthread_join -lpthreadGC2; then
4596         add_extralibs -lpthreadGC2
4597     elif check_lib pthread.h pthread_join -lpthread; then
4598         :
4599     elif ! check_func pthread_join; then
4600         disable pthreads
4601     fi
4602 fi
4603
4604 enabled pthreads &&
4605     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
4606
4607 disabled  zlib || check_lib  zlib.h      zlibVersion -lz   || disable  zlib
4608 disabled bzlib || check_lib bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4609
4610 check_lib math.h sin -lm && LIBM="-lm"
4611
4612 atan2f_args=2
4613 ldexpf_args=2
4614 powf_args=2
4615
4616 for func in $MATH_FUNCS; do
4617     eval check_mathfunc $func \${${func}_args:-1} $LIBM
4618 done
4619
4620 # these are off by default, so fail if requested and not available
4621 enabled avisynth          && { check_lib "avisynth/avisynth_c.h windows.h" LoadLibrary ||
4622                                check_lib "avxsynth/avxsynth_c.h dlfcn.h" dlopen -ldl   ||
4623                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4624 enabled cuda              && check_lib cuda.h cuInit -lcuda
4625 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4626 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4627 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4628 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4629 enabled libfaac           && require libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4630 enabled libfdk_aac        && require_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4631 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4632 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4633 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4634                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4635                                done || die "ERROR: libgsm not found"; }
4636 enabled libhdcd           && require_pkg_config libhdcd "hdcd/hdcd_simple.h" hdcd_new
4637 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4638 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
4639 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
4640 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4641 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
4642 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4643 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4644 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4645 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
4646 enabled libopenjpeg       && { check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4647                                require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; }
4648 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4649 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4650 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4651 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4652 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
4653 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
4654 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4655 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4656 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4657 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4658 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4659 enabled libvpx            && require_pkg_config "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version && {
4660     enabled libvpx_vp8_decoder && {
4661         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
4662             disable libvpx_vp8_decoder;
4663     }
4664     enabled libvpx_vp8_encoder && {
4665         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
4666             disable libvpx_vp8_encoder;
4667     }
4668     enabled libvpx_vp9_decoder && {
4669         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
4670             disable libvpx_vp9_decoder;
4671     }
4672     enabled libvpx_vp9_encoder && {
4673         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
4674             disable libvpx_vp9_encoder;
4675     }
4676     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
4677         die "libvpx enabled but no supported decoders found"
4678     fi
4679 }
4680 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4681 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4682 enabled libx264           && require_pkg_config x264 "stdint.h x264.h" x264_encoder_encode &&
4683                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4684                                die "ERROR: libx264 version must be >= 0.118."; } &&
4685                              { check_cpp_condition x264.h "X264_MPEG2" &&
4686                                enable libx262; }
4687 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
4688                              { check_cpp_condition x265.h "X265_BUILD >= 57" ||
4689                                die "ERROR: libx265 version must be >= 57."; }
4690 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
4691 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4692 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4693                                 { ! enabled cross_compile && {
4694                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
4695                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
4696                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
4697                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
4698                                die "ERROR: mmal not found"; }
4699 enabled mmal && check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"
4700 enabled omx_rpi && enable omx
4701 enabled omx               && { check_header OMX_Core.h ||
4702                                 { ! enabled cross_compile && enabled omx_rpi && {
4703                                     add_cflags -isystem/opt/vc/include/IL ; }
4704                                 check_header OMX_Core.h ; } ||
4705                                die "ERROR: OpenMAX IL headers not found"; }
4706 enabled openssl           && { { check_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
4707                                  check_pkg_config openssl openssl/ssl.h SSL_library_init; } && {
4708                                add_cflags $openssl_cflags && add_extralibs $openssl_libs; }||
4709                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4710                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4711                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4712                                die "ERROR: openssl not found"; }
4713
4714 enabled gnutls            && check_lib gmp.h mpz_export -lgmp && enable gmp
4715
4716 # libdc1394 check
4717 if enabled libdc1394; then
4718     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
4719         enable libdc1394_2; } ||
4720     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4721         enable libdc1394_1; } ||
4722     die "ERROR: No version of libdc1394 found "
4723 fi
4724
4725 if enabled nvenc; then
4726     check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."
4727     check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6" ||
4728         die "ERROR: NVENC API version 5 or older is not supported"
4729 fi
4730
4731 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4732     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4733     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4734     enable sdl
4735 fi
4736
4737 ! disabled pod2man   && check_cmd pod2man --help     && enable pod2man   || disable pod2man
4738 ! disabled texi2html && check_cmd texi2html -version && enable texi2html || disable texi2html
4739
4740 check_header linux/fb.h
4741 check_header linux/videodev2.h
4742 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4743
4744 check_header AVFoundation/AVFoundation.h &&
4745     check_objcflags -fobjc-arc &&
4746     add_extralibs -framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia ||
4747     disable AVFoundation_AVFoundation_h
4748
4749 check_header sys/videoio.h
4750
4751 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4752 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4753 # w32api 3.12 had it defined wrong
4754 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4755
4756 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4757 { check_header dev/bktr/ioctl_meteor.h &&
4758   check_header dev/bktr/ioctl_bt848.h; } ||
4759 { check_header machine/ioctl_meteor.h &&
4760   check_header machine/ioctl_bt848.h; } ||
4761 { check_header dev/video/meteor/ioctl_meteor.h &&
4762   check_header dev/video/bktr/ioctl_bt848.h; } ||
4763 check_header dev/ic/bt8xx.h
4764
4765 check_header sndio.h
4766 check_header sys/soundcard.h
4767 check_header soundcard.h
4768
4769 enabled_any alsa_indev alsa_outdev &&
4770     check_lib alsa/asoundlib.h snd_pcm_htimestamp -lasound
4771
4772 enabled jack_indev && check_lib jack/jack.h jack_client_open -ljack &&
4773     check_func jack_port_get_latency_range -ljack
4774
4775 enabled_any sndio_indev sndio_outdev && check_lib sndio.h sio_open -lsndio
4776
4777 if enabled libcdio; then
4778     check_lib "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4779     check_lib "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4780     die "ERROR: No usable libcdio/cdparanoia found"
4781 fi
4782
4783 if enabled libxcb; then
4784     check_pkg_config xcb-shape xcb/shape.h xcb_shape_rectangles || {
4785         enabled libxcb && die "ERROR: libxcb not found";
4786     } && enable libxcb
4787
4788     disabled libxcb_shm ||
4789         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
4790             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
4791         } && check_header sys/shm.h && enable libxcb_shm
4792
4793     disabled libxcb_xfixes ||
4794         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
4795             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
4796         } && enable libxcb_xfixes
4797
4798     add_cflags "$xcb_shape_cflags $xcb_event_cflags $xcb_shm_cflags $xcb_xfixes_cflags"
4799     add_extralibs "$xcb_shape_libs $xcb_event_libs $xcb_shm_libs $xcb_xfixes_libs"
4800 fi
4801
4802 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4803
4804 enabled vaapi &&
4805     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
4806     disable vaapi
4807
4808 enabled vaapi &&
4809     check_lib "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
4810     enable vaapi_drm
4811
4812 enabled vaapi &&
4813     check_lib "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11 &&
4814     enable vaapi_x11
4815
4816 enabled vdpau &&
4817     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4818     disable vdpau
4819
4820 enabled vdpau &&
4821     check_lib "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11 &&
4822     enable vdpau_x11
4823
4824 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4825
4826 # add some useful compiler flags if supported
4827 check_cflags -Wdeclaration-after-statement
4828 check_cflags -Wall
4829 check_cflags -Wdisabled-optimization
4830 check_cflags -Wpointer-arith
4831 check_cflags -Wredundant-decls
4832 check_cflags -Wwrite-strings
4833 check_cflags -Wtype-limits
4834 check_cflags -Wundef
4835 check_cflags -Wmissing-prototypes
4836 check_cflags -Wstrict-prototypes
4837 enabled extra_warnings && check_cflags -Winline
4838 enabled extra_warnings && check_cflags -Wcast-qual
4839
4840 check_disable_warning(){
4841  &n