hevcdec: add a VAAPI hwaccel
[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-avxsynth          Linux version of AviSynth
192   --enable-bzlib             bzip2 compression [autodetect]
193   --enable-frei0r            video filtering plugins
194   --enable-gnutls            crypto
195   --enable-libbs2b           Bauer stereophonic-to-binaural DSP
196   --enable-libcdio           audio CD input
197   --enable-libdc1394         IEEE 1394/Firewire camera input
198   --enable-libdcadec         DCA audio decoding
199   --enable-libfaac           AAC audio encoding
200   --enable-libfdk-aac        AAC audio encoding/decoding
201   --enable-libfontconfig     font configuration and management
202   --enable-libfreetype       font rendering
203   --enable-libgsm            GSM audio encoding/decoding
204   --enable-libhdcd           HDCD decoding filter
205   --enable-libilbc           ILBC audio encoding/decoding
206   --enable-libkvazaar        HEVC video encoding
207   --enable-libmp3lame        MP3 audio encoding
208   --enable-libopencore-amrnb AMR-NB audio encoding/decoding
209   --enable-libopencore-amrwb AMR-WB audio decoding
210   --enable-libopencv         computer vision
211   --enable-libopenh264       H.264 video encoding/decoding
212   --enable-libopenjpeg       JPEG 2000 image encoding/decoding
213   --enable-libopus           Opus audio encoding/decoding
214   --enable-libpulse          Pulseaudio sound server
215   --enable-librtmp           RTMP streaming
216   --enable-libschroedinger   Dirac video encoding/decoding
217   --enable-libsnappy         snappy compression
218   --enable-libspeex          Speex audio encoding/decoding
219   --enable-libtheora         Theora video encoding/decoding
220   --enable-libtwolame        MP2 audio encoding
221   --enable-libvo-aacenc      AAC audio encoding
222   --enable-libvo-amrwbenc    AMR-WB audio encoding
223   --enable-libvorbis         Vorbis audio encoding/decoding
224   --enable-libvpx            VP* video encoding/decoding
225   --enable-libwavpack        Wavpack audio encoding/decoding
226   --enable-libwebp           WebP image encoding/decoding
227   --enable-libx264           H.264 video encoding
228   --enable-libx265           HEVC video encoding
229   --enable-libxavs           Chinese AVS video encoding
230   --enable-libxcb            X window system protocol communication
231   --enable-libxcb-shm        X11 shm communication [auto]
232   --enable-libxcb-xfixes     X11 mouse rendering [auto]
233   --enable-libxvid           MPEG-4 ASP video encoding
234   --enable-openssl           crypto
235   --enable-zlib              compression [autodetect]
236
237   The following libraries provide various hardware acceleration features:
238   --enable-cuda    Nvidia CUDA (dynamically linked)
239   --enable-d3d11va Microsoft Direct3D 11 video acceleration [auto]
240   --enable-dxva2   Microsoft DirectX 9 video acceleration [auto]
241   --enable-libmfx  Intel MediaSDK (AKA Quick Sync Video)
242   --enable-libnpp  Nvidia CUDA processing
243   --enable-mmal    Broadcom Multi-Media Abstraction Layer (Raspberry Pi)
244   --enable-nvenc   Nvidia video encoding
245   --enable-omx     OpenMAX IL
246   --enable-omx-rpi OpenMAX IL for Raspberry Pi
247   --enable-vaapi   Video Acceleration API (mainly Unix/Intel)
248   --enable-vda     Apple Video Decode Acceleration [auto]
249   --enable-vdpau   Nvidia Video Decode and Presentation API for Unix [auto]
250
251 Toolchain options:
252   --arch=ARCH              select architecture [$arch]
253   --cpu=CPU                select the minimum required CPU (affects
254                            instruction selection, may crash on older CPUs)
255   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
256   --enable-cross-compile   assume a cross-compiler is used
257   --sysroot=PATH           root of cross-build tree
258   --sysinclude=PATH        location of cross-build system headers
259   --target-os=OS           compiler targets OS [$target_os]
260   --target-exec=CMD        command to run executables on target
261   --target-path=DIR        path to view of build directory on target
262   --target-samples=DIR     path to samples directory on target
263   --toolchain=NAME         set tool defaults according to NAME
264   --nm=NM                  use nm tool
265   --ar=AR                  use archive tool AR [$ar_default]
266   --as=AS                  use assembler AS [$as_default]
267   --cc=CC                  use C compiler CC [$cc_default]
268   --objcc=OCC              use ObjC compiler OCC [$cc_default]
269   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
270   --ld=LD                  use linker LD
271   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
272   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
273   --host-cc=HOSTCC         use host C compiler HOSTCC
274   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
275   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
276   --host-ld=HOSTLD         use host linker HOSTLD
277   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
278   --host-libs=HLIBS        use libs HLIBS when linking for host
279   --host-os=OS             compiler host OS [$target_os]
280   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
281   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
282   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
283   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
284   --extra-libs=ELIBS       add ELIBS [$ELIBS]
285   --extra-version=STRING   version string suffix []
286   --optflags=OPTFLAGS      override optimization-related compiler flags
287   --enable-pic             build position-independent code
288   --enable-thumb           compile for Thumb instruction set
289   --enable-lto             use link-time optimization
290   --env="ENV=override"     override the environment variables
291
292 Advanced options (experts only):
293   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
294   --custom-allocator=NAME  use a supported custom allocator
295   --disable-symver         disable symbol versioning
296   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
297   --disable-safe-bitstream-reader
298                            disable buffer boundary checking in bitreaders
299                            (faster, but may crash)
300   --enable-sram            allow use of on-chip SRAM
301
302 Optimization options (experts only):
303   --disable-asm            disable all assembly optimizations
304   --disable-altivec        disable AltiVec optimizations
305   --disable-vsx            disable VSX optimizations
306   --disable-power8         disable POWER8 optimizations
307   --disable-amd3dnow       disable 3DNow! optimizations
308   --disable-amd3dnowext    disable 3DNow! extended optimizations
309   --disable-mmx            disable MMX optimizations
310   --disable-mmxext         disable MMXEXT optimizations
311   --disable-sse            disable SSE optimizations
312   --disable-sse2           disable SSE2 optimizations
313   --disable-sse3           disable SSE3 optimizations
314   --disable-ssse3          disable SSSE3 optimizations
315   --disable-sse4           disable SSE4 optimizations
316   --disable-sse42          disable SSE4.2 optimizations
317   --disable-avx            disable AVX optimizations
318   --disable-xop            disable XOP optimizations
319   --disable-fma3           disable FMA3 optimizations
320   --disable-fma4           disable FMA4 optimizations
321   --disable-avx2           disable AVX2 optimizations
322   --disable-armv5te        disable armv5te optimizations
323   --disable-armv6          disable armv6 optimizations
324   --disable-armv6t2        disable armv6t2 optimizations
325   --disable-vfp            disable VFP optimizations
326   --disable-neon           disable NEON optimizations
327   --disable-inline-asm     disable use of inline assembly
328   --disable-yasm           disable use of nasm/yasm assembly
329
330 Developer options (useful when working on Libav itself):
331   --disable-debug          disable debugging symbols
332   --enable-debug=LEVEL     set the debug level [$debuglevel]
333   --disable-optimizations  disable compiler optimizations
334   --enable-extra-warnings  enable more compiler warnings
335   --samples=PATH           location of test samples for FATE, if not set use
336                            \$LIBAV_SAMPLES at make invocation time.
337   --enable-neon-clobber-test check NEON registers for clobbering (should be
338                            used only for debugging purposes)
339   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
340                            should be used only for debugging purposes)
341   --enable-random          randomly enable/disable components
342   --disable-random
343   --enable-random=LIST     randomly enable/disable specific components or
344   --disable-random=LIST    component groups. LIST is a comma-separated list
345                            of NAME[:PROB] entries where NAME is a component
346                            (group) and PROB the probability associated with
347                            NAME (default 0.5).
348   --random-seed=VALUE      seed value for --enable/disable-random
349   --disable-valgrind-backtrace do not print a backtrace under Valgrind
350                            (only applies to --disable-optimizations builds)
351
352 NOTE: Object files are built at the place where configure is launched.
353 EOF
354   exit 0
355 }
356
357 quotes='""'
358
359 log(){
360     echo "$@" >> $logfile
361 }
362
363 log_file(){
364     log BEGIN $1
365     i=1
366     while read line; do
367         printf '%5s   %s\n' "${i}" "${line}"
368         i=$(($i+1))
369     done < $1 >> $logfile
370     log END $1
371 }
372
373 echolog(){
374     log "$@"
375     echo "$@"
376 }
377
378 warn(){
379     log "WARNING: $*"
380     WARNINGS="${WARNINGS}WARNING: $*\n"
381 }
382
383 die(){
384     echolog "$@"
385     cat <<EOF
386
387 If you think configure made a mistake, make sure you are using the latest
388 version from Git.  If the latest version fails, report the problem to the
389 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
390 EOF
391     if disabled logging; then
392         cat <<EOF
393 Rerun configure with logging enabled (do not use --disable-logging), and
394 include the log this produces with your report.
395 EOF
396     else
397         cat <<EOF
398 Include the log file "$logfile" produced by configure as this will help
399 solving the problem.
400 EOF
401     fi
402     exit 1
403 }
404
405 # Avoid locale weirdness, besides we really just want to translate ASCII.
406 toupper(){
407     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
408 }
409
410 tolower(){
411     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
412 }
413
414 c_escape(){
415     echo "$*" | sed 's/["\\]/\\\0/g'
416 }
417
418 sh_quote(){
419     v=$(echo "$1" | sed "s/'/'\\\\''/g")
420     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
421     echo "$v"
422 }
423
424 cleanws(){
425     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
426 }
427
428 filter(){
429     pat=$1
430     shift
431     for v; do
432         eval "case $v in $pat) printf '%s ' $v ;; esac"
433     done
434 }
435
436 filter_out(){
437     pat=$1
438     shift
439     for v; do
440         eval "case $v in $pat) ;; *) printf '%s ' $v ;; esac"
441     done
442 }
443
444 map(){
445     m=$1
446     shift
447     for v; do eval $m; done
448 }
449
450 add_suffix(){
451     suffix=$1
452     shift
453     for v; do echo ${v}${suffix}; done
454 }
455
456 set_all(){
457     value=$1
458     shift
459     for var in $*; do
460         eval $var=$value
461     done
462 }
463
464 set_weak(){
465     value=$1
466     shift
467     for var; do
468         eval : \${$var:=$value}
469     done
470 }
471
472 sanitize_var_name(){
473     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
474 }
475
476 set_safe(){
477     var=$1
478     shift
479     eval $(sanitize_var_name "$var")='$*'
480 }
481
482 get_safe(){
483     eval echo \$$(sanitize_var_name "$1")
484 }
485
486 pushvar(){
487     for pvar in $*; do
488         eval level=\${${pvar}_level:=0}
489         eval ${pvar}_${level}="\$$pvar"
490         eval ${pvar}_level=$(($level+1))
491     done
492 }
493
494 popvar(){
495     for pvar in $*; do
496         eval level=\${${pvar}_level:-0}
497         test $level = 0 && continue
498         eval level=$(($level-1))
499         eval $pvar="\${${pvar}_${level}}"
500         eval ${pvar}_level=$level
501         eval unset ${pvar}_${level}
502     done
503 }
504
505 enable(){
506     set_all yes $*
507 }
508
509 disable(){
510     set_all no $*
511 }
512
513 enable_weak(){
514     set_weak yes $*
515 }
516
517 disable_weak(){
518     set_weak no $*
519 }
520
521 enable_safe(){
522     for var; do
523         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
524     done
525 }
526
527 disable_safe(){
528     for var; do
529         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
530     done
531 }
532
533 do_enable_deep(){
534     for var; do
535         enabled $var && continue
536         eval sel="\$${var}_select"
537         eval sgs="\$${var}_suggest"
538         pushvar var sgs
539         enable_deep $sel
540         popvar sgs
541         enable_deep_weak $sgs
542         popvar var
543     done
544 }
545
546 enable_deep(){
547     do_enable_deep $*
548     enable $*
549 }
550
551 enable_deep_weak(){
552     for var; do
553         disabled $var && continue
554         pushvar var
555         do_enable_deep $var
556         popvar var
557         enable_weak $var
558     done
559 }
560
561 enabled(){
562     test "${1#!}" = "$1" && op== || op=!=
563     eval test "x\$${1#!}" $op "xyes"
564 }
565
566 disabled(){
567     test "${1#!}" = "$1" && op== || op=!=
568     eval test "x\$${1#!}" $op "xno"
569 }
570
571 enabled_all(){
572     for opt; do
573         enabled $opt || return 1
574     done
575 }
576
577 disabled_all(){
578     for opt; do
579         disabled $opt || return 1
580     done
581 }
582
583 enabled_any(){
584     for opt; do
585         enabled $opt && return 0
586     done
587 }
588
589 disabled_any(){
590     for opt; do
591         disabled $opt && return 0
592     done
593     return 1
594 }
595
596 set_default(){
597     for opt; do
598         eval : \${$opt:=\$${opt}_default}
599     done
600 }
601
602 is_in(){
603     value=$1
604     shift
605     for var in $*; do
606         [ $var = $value ] && return 0
607     done
608     return 1
609 }
610
611 do_check_deps(){
612     for cfg; do
613         cfg="${cfg#!}"
614         enabled ${cfg}_checking && die "Circular dependency for $cfg."
615         disabled ${cfg}_checking && continue
616         enable ${cfg}_checking
617         append allopts $cfg
618
619         eval dep_all="\$${cfg}_deps"
620         eval dep_any="\$${cfg}_deps_any"
621         eval dep_sel="\$${cfg}_select"
622         eval dep_sgs="\$${cfg}_suggest"
623         eval dep_ifa="\$${cfg}_if"
624         eval dep_ifn="\$${cfg}_if_any"
625
626         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
627         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
628         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
629
630         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
631         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
632         enabled_all  $dep_all || disable $cfg
633         enabled_any  $dep_any || disable $cfg
634         disabled_any $dep_sel && disable $cfg
635
636         if enabled $cfg; then
637             enable_deep $dep_sel
638             enable_deep_weak $dep_sgs
639         fi
640
641         disable ${cfg}_checking
642     done
643 }
644
645 check_deps(){
646     unset allopts
647
648     do_check_deps "$@"
649
650     for cfg in $allopts; do
651         enabled $cfg || continue
652         eval dep_extralibs="\$${cfg}_extralibs"
653         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
654     done
655 }
656
657 print_config(){
658     pfx=$1
659     files=$2
660     shift 2
661     map 'eval echo "$v \${$v:-no}"' "$@" |
662     awk "BEGIN { split(\"$files\", files) }
663         {
664             c = \"$pfx\" toupper(\$1);
665             v = \$2;
666             sub(/yes/, 1, v);
667             sub(/no/,  0, v);
668             for (f in files) {
669                 file = files[f];
670                 if (file ~ /\\.h\$/) {
671                     printf(\"#define %s %d\\n\", c, v) >>file;
672                 } else if (file ~ /\\.asm\$/) {
673                     printf(\"%%define %s %d\\n\", c, v) >>file;
674                 } else if (file ~ /\\.mak\$/) {
675                     n = -v ? \"\" : \"!\";
676                     printf(\"%s%s=yes\\n\", n, c) >>file;
677                 }
678             }
679         }"
680 }
681
682 print_enabled(){
683     suf=$1
684     shift
685     for v; do
686         enabled $v && printf "%s\n" ${v%$suf}
687     done
688 }
689
690 append(){
691     var=$1
692     shift
693     eval "$var=\"\$$var $*\""
694 }
695
696 prepend(){
697     var=$1
698     shift
699     eval "$var=\"$* \$$var\""
700 }
701
702 unique(){
703     var=$1
704     uniq_list=""
705     for tok in $(eval echo \$$var); do
706         uniq_list="$(filter_out $tok $uniq_list) $tok"
707     done
708     eval "$var=\"${uniq_list}\""
709 }
710
711 add_cppflags(){
712     append CPPFLAGS "$@"
713 }
714
715 add_cflags(){
716     append CFLAGS $($cflags_filter "$@")
717 }
718
719 add_cflags_headers(){
720     append CFLAGS_HEADERS $($cflags_filter "$@")
721 }
722
723 add_asflags(){
724     append ASFLAGS $($asflags_filter "$@")
725 }
726
727 add_objcflags(){
728     append OBJCFLAGS $($objcflags_filter "$@")
729 }
730
731 add_ldflags(){
732     append LDFLAGS $($ldflags_filter "$@")
733 }
734
735 add_ldexeflags(){
736     append LDEXEFLAGS $($ldflags_filter "$@")
737 }
738
739 add_stripflags(){
740     append STRIPFLAGS "$@"
741 }
742
743 add_extralibs(){
744     prepend extralibs $($ldflags_filter "$@")
745 }
746
747 add_host_cppflags(){
748     append host_cppflags "$@"
749 }
750
751 add_host_cflags(){
752     append host_cflags $($host_cflags_filter "$@")
753 }
754
755 add_host_ldflags(){
756     append host_ldflags $($host_ldflags_filter "$@")
757 }
758
759 add_compat(){
760     append compat_objs $1
761     shift
762     map 'add_cppflags -D$v' "$@"
763 }
764
765 check_cmd(){
766     log "$@"
767     "$@" >> $logfile 2>&1
768 }
769
770 cc_o(){
771     eval printf '%s\\n' $CC_O
772 }
773
774 cc_e(){
775     eval printf '%s\\n' $CC_E
776 }
777
778 check_cc(){
779     log check_cc "$@"
780     cat > $TMPC
781     log_file $TMPC
782     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
783 }
784
785 check_objcc(){
786     log check_objcc "$@"
787     cat > $TMPC
788     log_file $TMPC
789     check_cmd $objcc $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPC
790 }
791
792 check_cpp(){
793     log check_cpp "$@"
794     cat > $TMPC
795     log_file $TMPC
796     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
797 }
798
799 as_o(){
800     eval printf '%s\\n' $AS_O
801 }
802
803 check_as(){
804     log check_as "$@"
805     cat > $TMPS
806     log_file $TMPS
807     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
808 }
809
810 check_inline_asm(){
811     log check_inline_asm "$@"
812     name="$1"
813     code="$2"
814     shift 2
815     disable $name
816     check_cc "$@" <<EOF && enable $name
817 void foo(void){ __asm__ volatile($code); }
818 EOF
819 }
820
821 check_insn(){
822     log check_insn "$@"
823     check_inline_asm ${1}_inline "\"$2\""
824     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
825 }
826
827 check_yasm(){
828     log check_yasm "$@"
829     echo "$1" > $TMPS
830     log_file $TMPS
831     shift 1
832     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
833 }
834
835 ld_o(){
836     eval printf '%s\\n' $LD_O
837 }
838
839 check_ld(){
840     log check_ld "$@"
841     flags=$(filter_out '-l*' "$@")
842     libs=$(filter '-l*' "$@")
843     check_cc $($cflags_filter $flags) || return
844     flags=$($ldflags_filter $flags)
845     libs=$($ldflags_filter $libs)
846     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
847 }
848
849 print_include(){
850     hdr=$1
851     test "${hdr%.h}" = "${hdr}" &&
852         echo "#include $hdr"    ||
853         echo "#include <$hdr>"
854 }
855
856 check_code(){
857     log check_code "$@"
858     check=$1
859     headers=$2
860     code=$3
861     shift 3
862     {
863         for hdr in $headers; do
864             print_include $hdr
865         done
866         echo "int main(void) { $code; return 0; }"
867     } | check_$check "$@"
868 }
869
870 check_cppflags(){
871     log check_cppflags "$@"
872     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
873 int x;
874 EOF
875 }
876
877 test_cflags(){
878     log test_cflags "$@"
879     set -- $($cflags_filter "$@")
880     check_cc "$@" <<EOF
881 int x;
882 EOF
883 }
884
885 check_cflags(){
886     log check_cflags "$@"
887     test_cflags "$@" && add_cflags "$@"
888 }
889
890 test_objcflags(){
891     log test_objcflags "$@"
892     set -- $($objcflags_filter "$@")
893     check_objcc "$@" <<EOF
894 int x;
895 EOF
896 }
897
898 check_objcflags(){
899     log check_objcflags "$@"
900     test_objcflags "$@" && add_objcflags "$@"
901 }
902
903 test_ldflags(){
904     log test_ldflags "$@"
905     check_ld "$@" <<EOF
906 int main(void){ return 0; }
907 EOF
908 }
909
910 check_ldflags(){
911     log check_ldflags "$@"
912     test_ldflags "$@" && add_ldflags "$@"
913 }
914
915 test_stripflags(){
916     log test_stripflags "$@"
917     # call check_cc to get a fresh TMPO
918     check_cc <<EOF
919 int main(void) { return 0; }
920 EOF
921     check_cmd $strip $STRIPFLAGS "$@" $TMPO
922 }
923
924 check_stripflags(){
925     log check_stripflags "$@"
926     test_stripflags "$@" && add_stripflags "$@"
927 }
928
929 check_header(){
930     log check_header "$@"
931     header=$1
932     shift
933     disable_safe $header
934     check_cpp "$@" <<EOF && enable_safe $header
935 #include <$header>
936 int x;
937 EOF
938 }
939
940 check_func(){
941     log check_func "$@"
942     func=$1
943     shift
944     disable $func
945     check_ld "$@" <<EOF && enable $func
946 extern int $func();
947 int main(void){ $func(); }
948 EOF
949 }
950
951 check_mathfunc(){
952     log check_mathfunc "$@"
953     func=$1
954     narg=$2
955     shift 2
956     test $narg = 2 && args="f, g" || args="f"
957     disable $func
958     check_ld "$@" <<EOF && enable $func
959 #include <math.h>
960 float foo(float f, float g) { return $func($args); }
961 int main(void){ return 0; }
962 EOF
963 }
964
965 check_func_headers(){
966     log check_func_headers "$@"
967     headers=$1
968     funcs=$2
969     shift 2
970     {
971         for hdr in $headers; do
972             print_include $hdr
973         done
974         for func in $funcs; do
975             echo "long check_$func(void) { return (long) $func; }"
976         done
977         echo "int main(void) { return 0; }"
978     } | check_ld "$@" && enable $funcs && enable_safe $headers
979 }
980
981 check_cpp_condition(){
982     log check_cpp_condition "$@"
983     header=$1
984     condition=$2
985     shift 2
986     check_cpp "$@" <<EOF
987 #include <$header>
988 #if !($condition)
989 #error "unsatisfied condition: $condition"
990 #endif
991 EOF
992 }
993
994 test_cflags_cpp(){
995     log test_cflags_cpp "$@"
996     flags=$1
997     condition=$2
998     shift 2
999     set -- $($cflags_filter "$flags")
1000     check_cpp "$@" <<EOF
1001 #if !($condition)
1002 #error "unsatisfied condition: $condition"
1003 #endif
1004 EOF
1005 }
1006
1007 check_lib(){
1008     log check_lib "$@"
1009     name="$1"
1010     headers="$2"
1011     funcs="$3"
1012     shift 3
1013     disable $name
1014     check_func_headers "$headers" "$funcs" "$@" &&
1015         enable $name && add_extralibs "$@"
1016 }
1017
1018 check_pkg_config(){
1019     log check_pkg_config "$@"
1020     pkg_version="$1"
1021     pkg="${1%% *}"
1022     headers="$2"
1023     funcs="$3"
1024     shift 3
1025     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1026     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1027     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1028     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1029         set_safe "${pkg}_cflags"    $pkg_cflags &&
1030         set_safe "${pkg}_extralibs" $pkg_libs
1031 }
1032
1033 check_exec(){
1034     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1035 }
1036
1037 check_exec_crash(){
1038     log check_exec_crash "$@"
1039     code=$(cat)
1040
1041     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1042     # are safe but may not be available everywhere.  Thus we use
1043     # raise(SIGTERM) instead.  The check is run in a subshell so we
1044     # can redirect the "Terminated" message from the shell.  SIGBUS
1045     # is not defined by standard C so it is used conditionally.
1046
1047     (check_exec "$@") >> $logfile 2>&1 <<EOF
1048 #include <signal.h>
1049 static void sighandler(int sig){
1050     raise(SIGTERM);
1051 }
1052 int foo(void){
1053     $code
1054 }
1055 int (*func_ptr)(void) = foo;
1056 int main(void){
1057     signal(SIGILL, sighandler);
1058     signal(SIGFPE, sighandler);
1059     signal(SIGSEGV, sighandler);
1060 #ifdef SIGBUS
1061     signal(SIGBUS, sighandler);
1062 #endif
1063     return func_ptr();
1064 }
1065 EOF
1066 }
1067
1068 check_type(){
1069     log check_type "$@"
1070     headers=$1
1071     type=$2
1072     shift 2
1073     disable_safe "$type"
1074     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1075 }
1076
1077 check_struct(){
1078     log check_struct "$@"
1079     headers=$1
1080     struct=$2
1081     member=$3
1082     shift 3
1083     disable_safe "${struct}_${member}"
1084     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1085         enable_safe "${struct}_${member}"
1086 }
1087
1088 check_builtin(){
1089     log check_builtin "$@"
1090     name=$1
1091     headers=$2
1092     builtin=$3
1093     shift 3
1094     disable "$name"
1095     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1096 }
1097
1098 check_compile_assert(){
1099     log check_compile_assert "$@"
1100     name=$1
1101     headers=$2
1102     condition=$3
1103     shift 3
1104     disable "$name"
1105     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1106 }
1107
1108 require(){
1109     log require "$@"
1110     name_version="$1"
1111     name="${1%% *}"
1112     headers="$2"
1113     func="$3"
1114     shift 3
1115     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1116 }
1117
1118 require_pkg_config(){
1119     log require_pkg_config "$@"
1120     pkg_version="$1"
1121     pkg="${1%% *}"
1122     check_pkg_config "$@" || die "ERROR: $pkg_version not found"
1123     add_cflags    $(get_safe "${pkg}_cflags")
1124     add_extralibs $(get_safe "${pkg}_extralibs")
1125 }
1126
1127 hostcc_e(){
1128     eval printf '%s\\n' $HOSTCC_E
1129 }
1130
1131 hostcc_o(){
1132     eval printf '%s\\n' $HOSTCC_O
1133 }
1134
1135 check_host_cc(){
1136     log check_host_cc "$@"
1137     cat > $TMPC
1138     log_file $TMPC
1139     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1140 }
1141
1142 check_host_cpp(){
1143     log check_host_cpp "$@"
1144     cat > $TMPC
1145     log_file $TMPC
1146     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1147 }
1148
1149 check_host_cppflags(){
1150     log check_host_cppflags "$@"
1151     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1152 int x;
1153 EOF
1154 }
1155
1156 check_host_cflags(){
1157     log check_host_cflags "$@"
1158     set -- $($host_cflags_filter "$@")
1159     check_host_cc "$@" <<EOF && append host_cflags "$@"
1160 int x;
1161 EOF
1162 }
1163
1164 check_host_cpp_condition(){
1165     log check_host_cpp_condition "$@"
1166     header=$1
1167     condition=$2
1168     shift 2
1169     check_host_cpp "$@" <<EOF
1170 #include <$header>
1171 #if !($condition)
1172 #error "unsatisfied condition: $condition"
1173 #endif
1174 EOF
1175 }
1176
1177 apply(){
1178     file=$1
1179     shift
1180     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1181 }
1182
1183 cp_if_changed(){
1184     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1185     mkdir -p "$(dirname $2)"
1186     cp -f "$1" "$2"
1187 }
1188
1189 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1190 # system-dependent things.
1191
1192 AVCODEC_COMPONENTS="
1193     bsfs
1194     decoders
1195     encoders
1196     hwaccels
1197     parsers
1198 "
1199
1200 AVDEVICE_COMPONENTS="
1201     indevs
1202     outdevs
1203 "
1204 AVFILTER_COMPONENTS="
1205     filters
1206 "
1207 AVFORMAT_COMPONENTS="
1208     demuxers
1209     muxers
1210     protocols
1211 "
1212
1213 AVRESAMPLE_COMPONENTS=""
1214 AVUTIL_COMPONENTS=""
1215
1216 COMPONENT_LIST="
1217     $AVCODEC_COMPONENTS
1218     $AVDEVICE_COMPONENTS
1219     $AVFILTER_COMPONENTS
1220     $AVFORMAT_COMPONENTS
1221     $AVRESAMPLE_COMPONENTS
1222     $AVUTIL_COMPONENTS
1223 "
1224
1225 EXAMPLE_LIST="
1226     decode_audio_example
1227     decode_video_example
1228     encode_audio_example
1229     encode_video_example
1230     filter_audio_example
1231     metadata_example
1232     output_example
1233     qsvdec_example
1234     transcode_aac_example
1235 "
1236
1237 HWACCEL_LIBRARY_NONFREE_LIST="
1238     cuda
1239     libnpp
1240 "
1241 HWACCEL_LIBRARY_LIST="
1242     $HWACCEL_LIBRARY_NONFREE_LIST
1243     d3d11va
1244     dxva2
1245     libmfx
1246     mmal
1247     nvenc
1248     omx
1249     vaapi
1250     vda
1251     vdpau
1252 "
1253
1254 EXTERNAL_LIBRARY_GPL_LIST="
1255     libcdio
1256     libx264
1257     libx265
1258     libxavs
1259     libxvid
1260 "
1261
1262 EXTERNAL_LIBRARY_NONFREE_LIST="
1263     libfaac
1264     libfdk_aac
1265     openssl
1266 "
1267
1268 EXTERNAL_LIBRARY_VERSION3_LIST="
1269     libopencore_amrnb
1270     libopencore_amrwb
1271     libvo_aacenc
1272     libvo_amrwbenc
1273 "
1274
1275 EXTERNAL_LIBRARY_LIST="
1276     $EXTERNAL_LIBRARY_GPL_LIST
1277     $EXTERNAL_LIBRARY_NONFREE_LIST
1278     $EXTERNAL_LIBRARY_VERSION3_LIST
1279     avisynth
1280     avxsynth
1281     bzlib
1282     frei0r
1283     gnutls
1284     libbs2b
1285     libdc1394
1286     libdcadec
1287     libfontconfig
1288     libfreetype
1289     libgsm
1290     libhdcd
1291     libilbc
1292     libkvazaar
1293     libmp3lame
1294     libopencv
1295     libopenh264
1296     libopenjpeg
1297     libopus
1298     libpulse
1299     librtmp
1300     libschroedinger
1301     libsnappy
1302     libspeex
1303     libtheora
1304     libtwolame
1305     libvorbis
1306     libvpx
1307     libwavpack
1308     libwebp
1309     libxcb
1310     libxcb_shm
1311     libxcb_xfixes
1312     zlib
1313 "
1314
1315 FEATURE_LIST="
1316     gray
1317     hardcoded_tables
1318     omx_rpi
1319     runtime_cpudetect
1320     safe_bitstream_reader
1321     shared
1322     small
1323     sram
1324     static
1325     swscale_alpha
1326 "
1327
1328 LIBRARY_LIST="
1329     avcodec
1330     avdevice
1331     avfilter
1332     avformat
1333     avresample
1334     avutil
1335     swscale
1336 "
1337
1338 LICENSE_LIST="
1339     gpl
1340     nonfree
1341     version3
1342 "
1343
1344 PROGRAM_LIST="
1345     avconv
1346     avplay
1347     avprobe
1348 "
1349
1350 SUBSYSTEM_LIST="
1351     dct
1352     doc
1353     error_resilience
1354     faan
1355     fft
1356     lsp
1357     lzo
1358     mdct
1359     network
1360     rdft
1361 "
1362
1363 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1364 CONFIG_LIST="
1365     $EXAMPLE_LIST
1366     $EXTERNAL_LIBRARY_LIST
1367     $HWACCEL_LIBRARY_LIST
1368     $FEATURE_LIST
1369     $LICENSE_LIST
1370     $LIBRARY_LIST
1371     $PROGRAM_LIST
1372     $SUBSYSTEM_LIST
1373     neon_clobber_test
1374     pic
1375     pod2man
1376     texi2html
1377     thumb
1378     valgrind_backtrace
1379     xmm_clobber_test
1380     $COMPONENT_LIST
1381 "
1382
1383 THREADS_LIST="
1384     pthreads
1385     w32threads
1386 "
1387
1388 ATOMICS_LIST="
1389     atomics_gcc
1390     atomics_suncc
1391     atomics_win32
1392 "
1393
1394 ARCH_LIST="
1395     aarch64
1396     alpha
1397     arm
1398     avr32
1399     avr32_ap
1400     avr32_uc
1401     bfin
1402     ia64
1403     m68k
1404     mips
1405     mips64
1406     parisc
1407     ppc
1408     ppc64
1409     s390
1410     sh4
1411     sparc
1412     sparc64
1413     tilegx
1414     tilepro
1415     tomi
1416     x86
1417     x86_32
1418     x86_64
1419 "
1420
1421 ARCH_EXT_LIST_ARM="
1422     armv5te
1423     armv6
1424     armv6t2
1425     armv8
1426     neon
1427     vfp
1428     vfpv3
1429 "
1430
1431 ARCH_EXT_LIST_X86_SIMD="
1432     amd3dnow
1433     amd3dnowext
1434     avx
1435     avx2
1436     fma3
1437     fma4
1438     mmx
1439     mmxext
1440     sse
1441     sse2
1442     sse3
1443     sse4
1444     sse42
1445     ssse3
1446     xop
1447 "
1448
1449 ARCH_EXT_LIST_PPC="
1450     altivec
1451     dcbzl
1452     ldbrx
1453     power8
1454     ppc4xx
1455     vsx
1456 "
1457
1458 ARCH_EXT_LIST_X86="
1459     $ARCH_EXT_LIST_X86_SIMD
1460     cpunop
1461     i686
1462 "
1463
1464 ARCH_EXT_LIST_MIPS="
1465     loongson
1466     mips32r1
1467     mips64r1
1468     mips32r2
1469     mips64r2
1470     mips32r6
1471     mips64r6
1472 "
1473
1474 ARCH_EXT_LIST="
1475     $ARCH_EXT_LIST_ARM
1476     $ARCH_EXT_LIST_MIPS
1477     $ARCH_EXT_LIST_PPC
1478     $ARCH_EXT_LIST_X86
1479     vis
1480 "
1481
1482 ARCH_FEATURES="
1483     aligned_stack
1484     fast_64bit
1485     fast_clz
1486     fast_cmov
1487     local_aligned_8
1488     local_aligned_16
1489     local_aligned_32
1490     simd_align_16
1491     simd_align_32
1492 "
1493
1494 BUILTIN_LIST="
1495     atomic_cas_ptr
1496     machine_rw_barrier
1497     MemoryBarrier
1498     mm_empty
1499     rdtsc
1500     sem_timedwait
1501     sync_val_compare_and_swap
1502 "
1503 HAVE_LIST_CMDLINE="
1504     inline_asm
1505     symver
1506     yasm
1507 "
1508
1509 HAVE_LIST_PUB="
1510     bigendian
1511     fast_unaligned
1512 "
1513
1514 HEADERS_LIST="
1515     AVFoundation_AVFoundation_h
1516     alsa_asoundlib_h
1517     altivec_h
1518     arpa_inet_h
1519     cdio_paranoia_h
1520     cdio_paranoia_paranoia_h
1521     d3d11_h
1522     dispatch_dispatch_h
1523     dev_bktr_ioctl_bt848_h
1524     dev_bktr_ioctl_meteor_h
1525     dev_ic_bt8xx_h
1526     dev_video_bktr_ioctl_bt848_h
1527     dev_video_meteor_ioctl_meteor_h
1528     direct_h
1529     dlfcn_h
1530     dxva_h
1531     gsm_h
1532     io_h
1533     mach_mach_time_h
1534     machine_ioctl_bt848_h
1535     machine_ioctl_meteor_h
1536     malloc_h
1537     poll_h
1538     sndio_h
1539     soundcard_h
1540     stdatomic_h
1541     sys_mman_h
1542     sys_param_h
1543     sys_resource_h
1544     sys_select_h
1545     sys_soundcard_h
1546     sys_time_h
1547     sys_un_h
1548     sys_videoio_h
1549     unistd_h
1550     valgrind_valgrind_h
1551     windows_h
1552     winsock2_h
1553 "
1554
1555 INTRINSICS_LIST="
1556     intrinsics_neon
1557 "
1558
1559 MATH_FUNCS="
1560     atanf
1561     atan2f
1562     cbrtf
1563     cosf
1564     exp2
1565     exp2f
1566     expf
1567     isinf
1568     isnan
1569     ldexpf
1570     llrint
1571     llrintf
1572     log2
1573     log2f
1574     log10f
1575     lrint
1576     lrintf
1577     powf
1578     rint
1579     round
1580     roundf
1581     sinf
1582     trunc
1583     truncf
1584 "
1585
1586 SYSTEM_FUNCS="
1587     aligned_malloc
1588     clock_gettime
1589     closesocket
1590     CommandLineToArgvW
1591     CoTaskMemFree
1592     CryptGenRandom
1593     dlopen
1594     fcntl
1595     flt_lim
1596     fork
1597     getaddrinfo
1598     gethrtime
1599     getopt
1600     GetProcessAffinityMask
1601     GetProcessMemoryInfo
1602     GetProcessTimes
1603     getrusage
1604     GetSystemTimeAsFileTime
1605     gettimeofday
1606     gmtime_r
1607     inet_aton
1608     isatty
1609     jack_port_get_latency_range
1610     LoadLibrary
1611     localtime_r
1612     mach_absolute_time
1613     MapViewOfFile
1614     memalign
1615     mkstemp
1616     mmap
1617     mprotect
1618     nanosleep
1619     posix_memalign
1620     sched_getaffinity
1621     SetConsoleTextAttribute
1622     setmode
1623     setrlimit
1624     Sleep
1625     strerror_r
1626     sysconf
1627     sysctl
1628     usleep
1629     VirtualAlloc
1630 "
1631
1632 TOOLCHAIN_FEATURES="
1633     as_dn_directive
1634     as_fpu_directive
1635     as_func
1636     as_object_arch
1637     asm_mod_q
1638     attribute_may_alias
1639     attribute_packed
1640     ebp_available
1641     ebx_available
1642     gnu_as
1643     ibm_asm
1644     inline_asm_labels
1645     pragma_deprecated
1646     symver_asm_label
1647     symver_gnu_asm
1648     vfp_args
1649     xform_asm
1650     xmm_clobbers
1651 "
1652
1653 TYPES_LIST="
1654     CONDITION_VARIABLE_Ptr
1655     socklen_t
1656     struct_addrinfo
1657     struct_group_source_req
1658     struct_ip_mreq_source
1659     struct_ipv6_mreq
1660     struct_pollfd
1661     struct_rusage_ru_maxrss
1662     struct_sockaddr_in6
1663     struct_sockaddr_sa_len
1664     struct_sockaddr_storage
1665     struct_v4l2_frmivalenum_discrete
1666 "
1667
1668 HAVE_LIST="
1669     $ARCH_EXT_LIST
1670     $(add_suffix _external $ARCH_EXT_LIST)
1671     $(add_suffix _inline   $ARCH_EXT_LIST)
1672     $ARCH_FEATURES
1673     $BUILTIN_LIST
1674     $HAVE_LIST_CMDLINE
1675     $HAVE_LIST_PUB
1676     $HEADERS_LIST
1677     $INTRINSICS_LIST
1678     $MATH_FUNCS
1679     $SYSTEM_FUNCS
1680     $THREADS_LIST
1681     $TOOLCHAIN_FEATURES
1682     $TYPES_LIST
1683     dos_paths
1684     dxva2_lib
1685     libc_msvcrt
1686     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1687     sdl
1688     section_data_rel_ro
1689     threads
1690     vaapi_drm
1691     vaapi_x11
1692     vdpau_x11
1693 "
1694
1695 # options emitted with CONFIG_ prefix but not available on the command line
1696 CONFIG_EXTRA="
1697     aandcttables
1698     ac3dsp
1699     audio_frame_queue
1700     audiodsp
1701     blockdsp
1702     bswapdsp
1703     cabac
1704     dirac_parse
1705     dvprofile
1706     faandct
1707     faanidct
1708     fdctdsp
1709     flacdsp
1710     fmtconvert
1711     g722dsp
1712     gmp
1713     golomb
1714     gplv3
1715     h263dsp
1716     h264chroma
1717     h264dsp
1718     h264parse
1719     h264pred
1720     h264qpel
1721     hevc_ps
1722     hpeldsp
1723     huffman
1724     huffyuvdsp
1725     huffyuvencdsp
1726     idctdsp
1727     iirfilter
1728     imdct15
1729     intrax8
1730     iso_media
1731     ividsp
1732     jpegtables
1733     libx262
1734     lgplv3
1735     lpc
1736     lzf
1737     me_cmp
1738     mpeg_er
1739     mpegaudio
1740     mpegaudiodsp
1741     mpegaudioheader
1742     mpegvideo
1743     mpegvideoenc
1744     mss34dsp
1745     pixblockdsp
1746     qpeldsp
1747     qsv
1748     qsvdec
1749     qsvenc
1750     rangecoder
1751     riffdec
1752     riffenc
1753     rtpdec
1754     rtpenc_chain
1755     rv34dsp
1756     sinewin
1757     snappy
1758     srtp
1759     startcode
1760     texturedsp
1761     texturedspenc
1762     tpeldsp
1763     vaapi_encode
1764     vc1dsp
1765     videodsp
1766     vp3dsp
1767     vp56dsp
1768     vp8dsp
1769     wma_freqs
1770     wmv2dsp
1771 "
1772
1773 CMDLINE_SELECT="
1774     $ARCH_EXT_LIST
1775     $CONFIG_LIST
1776     $HAVE_LIST_CMDLINE
1777     $THREADS_LIST
1778     asm
1779     cross_compile
1780     debug
1781     extra_warnings
1782     logging
1783     lto
1784     optimizations
1785     rpath
1786 "
1787
1788 PATHS_LIST="
1789     bindir
1790     datadir
1791     docdir
1792     incdir
1793     libdir
1794     mandir
1795     prefix
1796     shlibdir
1797 "
1798
1799 CMDLINE_SET="
1800     $PATHS_LIST
1801     ar
1802     arch
1803     as
1804     cc
1805     objcc
1806     cpu
1807     cross_prefix
1808     custom_allocator
1809     dep_cc
1810     env
1811     extra_version
1812     host_cc
1813     host_cflags
1814     host_extralibs
1815     host_ld
1816     host_ldflags
1817     host_os
1818     ld
1819     logfile
1820     malloc_prefix
1821     nm
1822     optflags
1823     pkg_config
1824     pkg_config_flags
1825     random_seed
1826     samples
1827     sysinclude
1828     sysroot
1829     target_exec
1830     target_os
1831     target_path
1832     target_samples
1833     toolchain
1834 "
1835
1836 CMDLINE_APPEND="
1837     extra_cflags
1838     extra_objcflags
1839     host_cppflags
1840 "
1841
1842 # code dependency declarations
1843
1844 # architecture extensions
1845
1846 armv5te_deps="arm"
1847 armv6_deps="arm"
1848 armv6t2_deps="arm"
1849 armv8_deps="aarch64"
1850 neon_deps_any="aarch64 arm"
1851 intrinsics_neon_deps="neon"
1852 vfp_deps_any="aarch64 arm"
1853 vfpv3_deps="vfp"
1854
1855 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1856
1857 altivec_deps="ppc"
1858 ppc4xx_deps="ppc"
1859 vsx_deps="altivec"
1860 power8_deps="vsx"
1861
1862 cpunop_deps="i686"
1863 x86_64_select="i686"
1864 x86_64_suggest="fast_cmov"
1865
1866 amd3dnow_deps="mmx"
1867 amd3dnowext_deps="amd3dnow"
1868 i686_deps="x86"
1869 mmx_deps="x86"
1870 mmxext_deps="mmx"
1871 sse_deps="mmxext"
1872 sse2_deps="sse"
1873 sse3_deps="sse2"
1874 ssse3_deps="sse3"
1875 sse4_deps="ssse3"
1876 sse42_deps="sse4"
1877 avx_deps="sse42"
1878 xop_deps="avx"
1879 fma3_deps="avx"
1880 fma4_deps="avx"
1881 avx2_deps="avx"
1882
1883 mmx_external_deps="yasm"
1884 mmx_inline_deps="inline_asm"
1885 mmx_suggest="mmx_external mmx_inline"
1886
1887 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1888     eval dep=\$${ext}_deps
1889     eval ${ext}_external_deps='"${dep}_external"'
1890     eval ${ext}_inline_deps='"${dep}_inline"'
1891     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1892 done
1893
1894 aligned_stack_if_any="aarch64 ppc x86"
1895 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1896 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1897 fast_unaligned_if_any="aarch64 ppc x86"
1898 simd_align_16_if_any="altivec neon sse"
1899 simd_align_32_if_any="avx"
1900
1901 # system capabilities
1902 symver_if_any="symver_asm_label symver_gnu_asm"
1903 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
1904
1905 # threading support
1906 atomics_gcc_if="sync_val_compare_and_swap"
1907 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1908 atomics_win32_if="MemoryBarrier"
1909 atomics_native_if_any="$ATOMICS_LIST"
1910 w32threads_deps="atomics_native"
1911 threads_if_any="$THREADS_LIST"
1912
1913 # subsystems
1914 dct_select="rdft"
1915 dirac_parse_select="golomb"
1916 error_resilience_select="me_cmp"
1917 faandct_deps="faan fdctdsp"
1918 faanidct_deps="faan idctdsp"
1919 h264dsp_select="startcode"
1920 hevc_ps_select="golomb"
1921 intrax8_select="blockdsp idctdsp"
1922 mdct_select="fft"
1923 rdft_select="fft"
1924 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1925 mpeg_er_select="error_resilience"
1926 mpegaudio_select="mpegaudiodsp mpegaudioheader"
1927 mpegaudiodsp_select="dct"
1928 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1929 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1930 vc1dsp_select="h264chroma qpeldsp startcode"
1931
1932 # decoders / encoders
1933 aac_decoder_select="imdct15 mdct sinewin"
1934 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1935 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1936 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1937 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1938 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1939 adpcm_g722_decoder_select="g722dsp"
1940 adpcm_g722_encoder_select="g722dsp"
1941 aic_decoder_select="golomb idctdsp"
1942 alac_encoder_select="lpc"
1943 als_decoder_select="bswapdsp"
1944 amrnb_decoder_select="lsp"
1945 amrwb_decoder_select="lsp"
1946 amv_decoder_select="sp5x_decoder"
1947 ape_decoder_select="bswapdsp"
1948 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1949 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1950 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1951 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1952 atrac1_decoder_select="mdct sinewin"
1953 atrac3_decoder_select="mdct"
1954 atrac3p_decoder_select="mdct sinewin"
1955 bink_decoder_select="blockdsp hpeldsp"
1956 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1957 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1958 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1959 cllc_decoder_select="bswapdsp"
1960 comfortnoise_encoder_select="lpc"
1961 cook_decoder_select="audiodsp mdct sinewin"
1962 cscd_decoder_select="lzo"
1963 cscd_decoder_suggest="zlib"
1964 dca_decoder_select="fmtconvert mdct"
1965 dds_decoder_select="texturedsp"
1966 dnxhd_decoder_select="blockdsp idctdsp"
1967 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1968 dvvideo_decoder_select="dvprofile idctdsp"
1969 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1970 dxa_decoder_deps="zlib"
1971 dxv_decoder_select="lzf texturedsp"
1972 eac3_decoder_select="ac3_decoder"
1973 eac3_encoder_select="ac3_encoder"
1974 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1975 eatgq_decoder_select="aandcttables idctdsp"
1976 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
1977 exr_decoder_deps="zlib"
1978 ffv1_decoder_select="rangecoder"
1979 ffv1_encoder_select="rangecoder"
1980 ffvhuff_decoder_select="huffyuv_decoder"
1981 ffvhuff_encoder_select="huffyuv_encoder"
1982 fic_decoder_select="golomb"
1983 flac_decoder_select="flacdsp"
1984 flac_encoder_select="bswapdsp flacdsp lpc"
1985 flashsv_decoder_deps="zlib"
1986 flashsv_encoder_deps="zlib"
1987 flashsv2_decoder_deps="zlib"
1988 flv_decoder_select="h263_decoder"
1989 flv_encoder_select="h263_encoder"
1990 fourxm_decoder_select="blockdsp bswapdsp"
1991 fraps_decoder_select="bswapdsp huffman"
1992 g2m_decoder_deps="zlib"
1993 g2m_decoder_select="blockdsp idctdsp jpegtables"
1994 h261_decoder_select="mpeg_er mpegvideo"
1995 h261_encoder_select="aandcttables mpegvideoenc"
1996 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1997 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1998 h263i_decoder_select="h263_decoder"
1999 h263p_encoder_select="h263_encoder"
2000 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2001 h264_decoder_suggest="error_resilience"
2002 hap_decoder_select="snappy texturedsp"
2003 hap_encoder_deps="libsnappy"
2004 hap_encoder_select="texturedspenc"
2005 hevc_decoder_select="bswapdsp cabac hevc_ps videodsp"
2006 huffyuv_decoder_select="bswapdsp huffyuvdsp"
2007 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
2008 iac_decoder_select="imc_decoder"
2009 imc_decoder_select="bswapdsp fft mdct sinewin"
2010 indeo3_decoder_select="hpeldsp"
2011 indeo4_decoder_select="ividsp"
2012 indeo5_decoder_select="ividsp"
2013 interplay_video_decoder_select="hpeldsp"
2014 jpegls_decoder_select="mjpeg_decoder"
2015 jv_decoder_select="blockdsp"
2016 lagarith_decoder_select="huffyuvdsp"
2017 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2018 magicyuv_decoder_select="huffyuvdsp"
2019 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2020 metasound_decoder_select="lsp mdct sinewin"
2021 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2022 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2023 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2024 mjpegb_decoder_select="mjpeg_decoder"
2025 mlp_decoder_select="mlp_parser"
2026 motionpixels_decoder_select="bswapdsp"
2027 mp1_decoder_select="mpegaudio"
2028 mp1float_decoder_select="mpegaudio"
2029 mp2_decoder_select="mpegaudio"
2030 mp2float_decoder_select="mpegaudio"
2031 mp3_decoder_select="mpegaudio"
2032 mp3adu_decoder_select="mpegaudio"
2033 mp3adufloat_decoder_select="mpegaudio"
2034 mp3float_decoder_select="mpegaudio"
2035 mp3on4_decoder_select="mpegaudio"
2036 mp3on4float_decoder_select="mpegaudio"
2037 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2038 mpc8_decoder_select="mpegaudiodsp"
2039 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2040 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2041 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2042 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2043 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2044 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2045 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2046 mpeg4_encoder_select="h263_encoder"
2047 msa1_decoder_select="mss34dsp"
2048 msmpeg4v1_decoder_select="h263_decoder"
2049 msmpeg4v2_decoder_select="h263_decoder"
2050 msmpeg4v2_encoder_select="h263_encoder"
2051 msmpeg4v3_decoder_select="h263_decoder"
2052 msmpeg4v3_encoder_select="h263_encoder"
2053 mss2_decoder_select="error_resilience mpeg_er mpegvideo qpeldsp vc1_decoder"
2054 mts2_decoder_select="mss34dsp"
2055 mxpeg_decoder_select="mjpeg_decoder"
2056 nellymoser_decoder_select="mdct sinewin"
2057 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2058 nuv_decoder_select="idctdsp lzo"
2059 on2avc_decoder_select="mdct"
2060 opus_decoder_deps="avresample"
2061 opus_decoder_select="imdct15"
2062 png_decoder_deps="zlib"
2063 png_encoder_deps="zlib"
2064 png_encoder_select="huffyuvencdsp"
2065 prores_decoder_select="idctdsp"
2066 prores_encoder_select="fdctdsp"
2067 qcelp_decoder_select="lsp"
2068 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2069 ra_144_encoder_select="audio_frame_queue lpc"
2070 ralf_decoder_select="golomb"
2071 rscc_decoder_deps="zlib"
2072 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2073 rv10_encoder_select="h263_encoder"
2074 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2075 rv20_encoder_select="h263_encoder"
2076 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2077 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2078 screenpresso_decoder_deps="zlib"
2079 sipr_decoder_select="lsp"
2080 sp5x_decoder_select="mjpeg_decoder"
2081 svq1_decoder_select="hpeldsp"
2082 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2083 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2084 svq3_decoder_suggest="zlib"
2085 tak_decoder_select="audiodsp"
2086 tdsc_decoder_deps="zlib"
2087 tdsc_decoder_select="mjpeg_decoder"
2088 theora_decoder_select="vp3_decoder"
2089 thp_decoder_select="mjpeg_decoder"
2090 tiff_decoder_suggest="zlib"
2091 tiff_encoder_suggest="zlib"
2092 truehd_decoder_select="mlp_decoder"
2093 truemotion2_decoder_select="bswapdsp"
2094 truespeech_decoder_select="bswapdsp"
2095 tscc_decoder_deps="zlib"
2096 txd_decoder_select="texturedsp"
2097 twinvq_decoder_select="mdct lsp sinewin"
2098 utvideo_decoder_select="bswapdsp"
2099 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2100 vble_decoder_select="huffyuvdsp"
2101 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2102 vc1image_decoder_select="vc1_decoder"
2103 vorbis_decoder_select="mdct"
2104 vorbis_encoder_select="mdct"
2105 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2106 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2107 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2108 vp6a_decoder_select="vp6_decoder"
2109 vp6f_decoder_select="vp6_decoder"
2110 vp7_decoder_select="h264pred videodsp vp8dsp"
2111 vp8_decoder_select="h264pred videodsp vp8dsp"
2112 vp9_decoder_select="videodsp vp9_superframe_split_bsf"
2113 webp_decoder_select="vp8_decoder"
2114 wmapro_decoder_select="mdct sinewin wma_freqs"
2115 wmav1_decoder_select="mdct sinewin wma_freqs"
2116 wmav1_encoder_select="mdct sinewin wma_freqs"
2117 wmav2_decoder_select="mdct sinewin wma_freqs"
2118 wmav2_encoder_select="mdct sinewin wma_freqs"
2119 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2120 wmv1_decoder_select="h263_decoder"
2121 wmv1_encoder_select="h263_encoder"
2122 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2123 wmv2_encoder_select="h263_encoder wmv2dsp"
2124 wmv3_decoder_select="vc1_decoder"
2125 wmv3image_decoder_select="wmv3_decoder"
2126 zerocodec_decoder_deps="zlib"
2127 zlib_decoder_deps="zlib"
2128 zlib_encoder_deps="zlib"
2129 zmbv_decoder_deps="zlib"
2130 zmbv_encoder_deps="zlib"
2131
2132 # hardware accelerators
2133 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2134 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2135 dxva2_lib_deps="dxva2"
2136 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2137 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2138
2139 h263_vaapi_hwaccel_deps="vaapi"
2140 h263_vaapi_hwaccel_select="h263_decoder"
2141 h264_d3d11va_hwaccel_deps="d3d11va"
2142 h264_d3d11va_hwaccel_select="h264_decoder"
2143 h264_dxva2_hwaccel_deps="dxva2"
2144 h264_dxva2_hwaccel_select="h264_decoder"
2145 h264_mmal_hwaccel_deps="mmal"
2146 h264_qsv_hwaccel_deps="libmfx"
2147 h264_vaapi_hwaccel_deps="vaapi"
2148 h264_vaapi_hwaccel_select="h264_decoder"
2149 h264_vda_hwaccel_deps="vda"
2150 h264_vda_hwaccel_select="h264_decoder"
2151 h264_vda_old_hwaccel_deps="vda"
2152 h264_vda_old_hwaccel_select="h264_decoder"
2153 h264_vdpau_hwaccel_deps="vdpau"
2154 h264_vdpau_hwaccel_select="h264_decoder"
2155 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2156 hevc_d3d11va_hwaccel_select="hevc_decoder"
2157 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2158 hevc_dxva2_hwaccel_select="hevc_decoder"
2159 hevc_qsv_hwaccel_deps="libmfx"
2160 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2161 hevc_vaapi_hwaccel_select="hevc_decoder"
2162 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2163 hevc_vdpau_hwaccel_select="hevc_decoder"
2164 mpeg1_vdpau_hwaccel_deps="vdpau"
2165 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2166 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2167 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2168 mpeg2_dxva2_hwaccel_deps="dxva2"
2169 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2170 mpeg2_mmal_hwaccel_deps="mmal"
2171 mpeg2_qsv_hwaccel_deps="libmfx"
2172 mpeg2_vaapi_hwaccel_deps="vaapi"
2173 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2174 mpeg2_vdpau_hwaccel_deps="vdpau"
2175 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2176 mpeg4_vaapi_hwaccel_deps="vaapi"
2177 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2178 mpeg4_vdpau_hwaccel_deps="vdpau"
2179 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2180 vc1_d3d11va_hwaccel_deps="d3d11va"
2181 vc1_d3d11va_hwaccel_select="vc1_decoder"
2182 vc1_dxva2_hwaccel_deps="dxva2"
2183 vc1_dxva2_hwaccel_select="vc1_decoder"
2184 vc1_mmal_hwaccel_deps="mmal"
2185 vc1_qsv_hwaccel_deps="libmfx"
2186 vc1_vaapi_hwaccel_deps="vaapi"
2187 vc1_vaapi_hwaccel_select="vc1_decoder"
2188 vc1_vdpau_hwaccel_deps="vdpau"
2189 vc1_vdpau_hwaccel_select="vc1_decoder"
2190 vp8_qsv_hwaccel_deps="libmfx"
2191 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2192 vp8_vaapi_hwaccel_select="vp8_decoder"
2193 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2194 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2195 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2196 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2197
2198 # hardware-accelerated codecs
2199 nvenc_deps_any="dlopen LoadLibrary"
2200 nvenc_extralibs='$ldl'
2201 omx_deps="dlopen pthreads"
2202 omx_extralibs='$ldl'
2203 omx_rpi_select="omx"
2204 qsvdec_select="qsv"
2205 qsvenc_select="qsv"
2206 vaapi_encode_deps="vaapi"
2207
2208 hwupload_cuda_filter_deps="cuda"
2209 scale_npp_filter_deps="cuda libnpp"
2210
2211 h264_mmal_decoder_deps="mmal"
2212 h264_nvenc_encoder_deps="nvenc"
2213 h264_omx_encoder_deps="omx"
2214 h264_qsv_decoder_deps="libmfx"
2215 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2216 h264_qsv_encoder_deps="libmfx"
2217 h264_qsv_encoder_select="qsvenc"
2218 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2219 h264_vaapi_encoder_select="vaapi_encode golomb"
2220 hevc_nvenc_encoder_deps="nvenc"
2221 hevc_qsv_decoder_deps="libmfx"
2222 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2223 hevc_qsv_encoder_deps="libmfx"
2224 hevc_qsv_encoder_select="hevc_ps qsvenc"
2225 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2226 hevc_vaapi_encoder_select="vaapi_encode golomb"
2227 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2228 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2229 mpeg2_mmal_decoder_deps="mmal"
2230 mpeg2_qsv_decoder_deps="libmfx"
2231 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2232 mpeg2_qsv_encoder_deps="libmfx"
2233 mpeg2_qsv_encoder_select="qsvenc"
2234 mpeg4_omx_encoder_deps="omx"
2235 vc1_mmal_decoder_deps="mmal"
2236 vc1_qsv_decoder_deps="libmfx"
2237 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2238 vp8_qsv_decoder_deps="libmfx"
2239 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2240
2241 nvenc_h264_encoder_select="h264_nvenc_encoder"
2242 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2243
2244 # parsers
2245 h264_parser_select="golomb h264dsp h264parse"
2246 hevc_parser_select="hevc_ps"
2247 mpegaudio_parser_select="mpegaudioheader"
2248 mpegvideo_parser_select="mpegvideo"
2249 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2250 vc1_parser_select="vc1dsp"
2251
2252 # bitstream_filters
2253 mjpeg2jpeg_bsf_select="jpegtables"
2254
2255 # external libraries
2256 avisynth_deps="LoadLibrary"
2257 avxsynth_deps="dlopen"
2258 avisynth_demuxer_deps_any="avisynth avxsynth"
2259 avisynth_demuxer_select="riffdec"
2260 libdcadec_decoder_deps="libdcadec"
2261 libfaac_encoder_deps="libfaac"
2262 libfaac_encoder_select="audio_frame_queue"
2263 libfdk_aac_decoder_deps="libfdk_aac"
2264 libfdk_aac_encoder_deps="libfdk_aac"
2265 libfdk_aac_encoder_select="audio_frame_queue"
2266 libgsm_decoder_deps="libgsm"
2267 libgsm_encoder_deps="libgsm"
2268 libgsm_ms_decoder_deps="libgsm"
2269 libgsm_ms_encoder_deps="libgsm"
2270 libilbc_decoder_deps="libilbc"
2271 libilbc_encoder_deps="libilbc"
2272 libkvazaar_encoder_deps="libkvazaar"
2273 libmp3lame_encoder_deps="libmp3lame"
2274 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2275 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2276 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2277 libopencore_amrnb_encoder_select="audio_frame_queue"
2278 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2279 libopenh264_decoder_deps="libopenh264"
2280 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2281 libopenh264_encoder_deps="libopenh264"
2282 libopenjpeg_decoder_deps="libopenjpeg"
2283 libopenjpeg_encoder_deps="libopenjpeg"
2284 libopus_decoder_deps="libopus"
2285 libopus_encoder_deps="libopus"
2286 libopus_encoder_select="audio_frame_queue"
2287 libschroedinger_decoder_deps="libschroedinger"
2288 libschroedinger_encoder_deps="libschroedinger"
2289 libspeex_decoder_deps="libspeex"
2290 libspeex_encoder_deps="libspeex"
2291 libspeex_encoder_select="audio_frame_queue"
2292 libtheora_encoder_deps="libtheora"
2293 libtwolame_encoder_deps="libtwolame"
2294 libvo_aacenc_encoder_deps="libvo_aacenc"
2295 libvo_aacenc_encoder_select="audio_frame_queue"
2296 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2297 libvorbis_encoder_deps="libvorbis"
2298 libvorbis_encoder_select="audio_frame_queue"
2299 libvpx_vp8_decoder_deps="libvpx"
2300 libvpx_vp8_encoder_deps="libvpx"
2301 libvpx_vp9_decoder_deps="libvpx"
2302 libvpx_vp9_encoder_deps="libvpx"
2303 libwavpack_encoder_deps="libwavpack"
2304 libwavpack_encoder_select="audio_frame_queue"
2305 libwebp_encoder_deps="libwebp"
2306 libx262_encoder_deps="libx262"
2307 libx264_encoder_deps="libx264"
2308 libx265_encoder_deps="libx265"
2309 libxavs_encoder_deps="libxavs"
2310 libxvid_encoder_deps="libxvid mkstemp"
2311
2312 # demuxers / muxers
2313 ac3_demuxer_select="ac3_parser"
2314 asf_demuxer_select="riffdec"
2315 asf_muxer_select="riffenc"
2316 asf_stream_muxer_select="asf_muxer"
2317 avi_demuxer_select="iso_media riffdec"
2318 avi_muxer_select="riffenc"
2319 caf_demuxer_select="iso_media riffdec"
2320 dash_muxer_select="mp4_muxer"
2321 dirac_demuxer_select="dirac_parser"
2322 dv_demuxer_select="dvprofile"
2323 dv_muxer_select="dvprofile"
2324 dxa_demuxer_select="riffdec"
2325 eac3_demuxer_select="ac3_parser"
2326 f4v_muxer_select="mov_muxer"
2327 flac_demuxer_select="flac_parser"
2328 hds_muxer_select="flv_muxer"
2329 hls_muxer_select="mpegts_muxer"
2330 ipod_muxer_select="mov_muxer"
2331 ismv_muxer_select="mov_muxer"
2332 matroska_audio_muxer_select="matroska_muxer"
2333 matroska_demuxer_select="iso_media riffdec"
2334 matroska_demuxer_suggest="bzlib lzo zlib"
2335 matroska_muxer_select="iso_media riffenc"
2336 mmf_muxer_select="riffenc"
2337 mov_demuxer_select="iso_media riffdec"
2338 mov_demuxer_suggest="zlib"
2339 mov_muxer_select="iso_media riffenc rtpenc_chain"
2340 mp3_demuxer_select="mpegaudio_parser"
2341 mp3_muxer_select="mpegaudioheader"
2342 mp4_muxer_select="mov_muxer"
2343 mpegts_demuxer_select="iso_media"
2344 mpegts_muxer_select="adts_muxer latm_muxer"
2345 mpegtsraw_demuxer_select="mpegts_demuxer"
2346 mxf_d10_muxer_select="mxf_muxer"
2347 nut_muxer_select="riffenc"
2348 nuv_demuxer_select="riffdec"
2349 oga_muxer_select="ogg_muxer"
2350 ogg_demuxer_select="dirac_parse"
2351 opus_muxer_select="ogg_muxer"
2352 psp_muxer_select="mov_muxer"
2353 rtp_demuxer_select="sdp_demuxer"
2354 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2355 rtsp_demuxer_select="http_protocol rtpdec"
2356 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2357 sap_demuxer_select="sdp_demuxer"
2358 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2359 sdp_demuxer_select="rtpdec"
2360 smoothstreaming_muxer_select="ismv_muxer"
2361 spdif_muxer_select="aac_parser"
2362 spx_muxer_select="ogg_muxer"
2363 swf_demuxer_suggest="zlib"
2364 tak_demuxer_select="tak_parser"
2365 tg2_muxer_select="mov_muxer"
2366 tgp_muxer_select="mov_muxer"
2367 w64_demuxer_select="wav_demuxer"
2368 wav_demuxer_select="riffdec"
2369 wav_muxer_select="riffenc"
2370 webm_muxer_select="iso_media riffenc"
2371 webm_muxer_suggest="libopus_encoder libvorbis_encoder libvpx_vp8_encoder libvpx_vp9_encoder"
2372 wtv_demuxer_select="mpegts_demuxer riffdec"
2373 xmv_demuxer_select="riffdec"
2374 xwma_demuxer_select="riffdec"
2375
2376 # indevs / outdevs
2377 alsa_indev_deps="alsa"
2378 alsa_outdev_deps="alsa"
2379 avfoundation_indev_deps="AVFoundation_AVFoundation_h objc_arc pthreads"
2380 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2381 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2382 dv1394_indev_deps="dv1394"
2383 dv1394_indev_select="dv_demuxer"
2384 fbdev_indev_deps="linux_fb_h"
2385 jack_indev_deps="jack"
2386 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2387 libcdio_indev_deps="libcdio"
2388 libdc1394_indev_deps="libdc1394"
2389 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2390 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2391 pulse_indev_deps="libpulse"
2392 sndio_indev_deps="sndio"
2393 sndio_outdev_deps="sndio"
2394 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2395 vfwcap_indev_deps="vfw32 vfwcap_defines"
2396 xcbgrab_indev_deps="libxcb"
2397
2398 # protocols
2399 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2400 ffrtmpcrypt_protocol_deps_any="gmp openssl"
2401 ffrtmpcrypt_protocol_select="tcp_protocol"
2402 ffrtmphttp_protocol_deps="!librtmp_protocol"
2403 ffrtmphttp_protocol_select="http_protocol"
2404 gopher_protocol_select="network"
2405 http_protocol_select="tcp_protocol"
2406 httpproxy_protocol_select="tcp_protocol"
2407 https_protocol_select="tls_protocol"
2408 icecast_protocol_select="http_protocol"
2409 librtmp_protocol_deps="librtmp"
2410 librtmpe_protocol_deps="librtmp"
2411 librtmps_protocol_deps="librtmp"
2412 librtmpt_protocol_deps="librtmp"
2413 librtmpte_protocol_deps="librtmp"
2414 mmsh_protocol_select="http_protocol"
2415 mmst_protocol_select="network"
2416 rtmp_protocol_deps="!librtmp_protocol"
2417 rtmp_protocol_select="tcp_protocol"
2418 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2419 rtmps_protocol_deps="!librtmp_protocol"
2420 rtmps_protocol_select="tls_protocol"
2421 rtmpt_protocol_select="ffrtmphttp_protocol"
2422 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2423 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2424 rtp_protocol_select="udp_protocol"
2425 sctp_protocol_deps="struct_sctp_event_subscribe"
2426 sctp_protocol_select="network"
2427 srtp_protocol_select="rtp_protocol srtp"
2428 tcp_protocol_select="network"
2429 tls_gnutls_protocol_deps="gnutls"
2430 tls_gnutls_protocol_select="tcp_protocol"
2431 tls_openssl_protocol_deps="openssl !tls_gnutls_protocol"
2432 tls_openssl_protocol_select="tcp_protocol"
2433 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2434 udp_protocol_select="network"
2435 unix_protocol_deps="sys_un_h"
2436 unix_protocol_select="network"
2437
2438 # filters
2439 asyncts_filter_deps="avresample"
2440 blackframe_filter_deps="gpl"
2441 boxblur_filter_deps="gpl"
2442 bs2b_filter_deps="libbs2b"
2443 cropdetect_filter_deps="gpl"
2444 deinterlace_qsv_filter_deps="libmfx"
2445 deinterlace_vaapi_filter_deps="vaapi"
2446 delogo_filter_deps="gpl"
2447 drawtext_filter_deps="libfreetype"
2448 frei0r_filter_deps="frei0r dlopen"
2449 frei0r_filter_extralibs='$ldl'
2450 frei0r_src_filter_deps="frei0r dlopen"
2451 frei0r_src_filter_extralibs='$ldl'
2452 hdcd_filter_deps="libhdcd"
2453 hqdn3d_filter_deps="gpl"
2454 interlace_filter_deps="gpl"
2455 movie_filter_deps="avcodec avformat"
2456 ocv_filter_deps="libopencv"
2457 resample_filter_deps="avresample"
2458 scale_filter_deps="swscale"
2459 scale_qsv_filter_deps="libmfx"
2460 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2461
2462 # examples
2463 decode_audio_example_deps="avcodec avutil"
2464 decode_video_example_deps="avcodec avutil"
2465 encode_audio_example_deps="avcodec avutil"
2466 encode_video_example_deps="avcodec avutil"
2467 filter_audio_example_deps="avfilter avutil"
2468 metadata_example_deps="avformat avutil"
2469 output_example_deps="avcodec avformat avresample avutil swscale"
2470 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
2471 transcode_aac_example_deps="avcodec avformat avresample"
2472
2473 # libraries, in linking order
2474 avcodec_deps="avutil"
2475 avcodec_select="null_bsf"
2476 avdevice_deps="avformat avcodec avutil"
2477 avfilter_deps="avutil"
2478 avformat_deps="avcodec avutil"
2479 avresample_deps="avutil"
2480 swscale_deps="avutil"
2481
2482 # programs
2483 avconv_deps="avcodec avfilter avformat avresample swscale"
2484 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2485                fps_filter null_filter resample_filter scale_filter
2486                trim_filter"
2487 avplay_deps="avcodec avfilter avformat avresample sdl"
2488 avplay_extralibs='$sdl_extralibs'
2489 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2490 avprobe_deps="avcodec avformat"
2491
2492 # documentation
2493 pod2man_deps="doc"
2494 texi2html_deps="doc"
2495
2496 # default parameters
2497
2498 logfile="config.log"
2499
2500 # installation paths
2501 prefix_default="/usr/local"
2502 bindir_default='${prefix}/bin'
2503 datadir_default='${prefix}/share/avconv'
2504 docdir_default='${prefix}/share/doc/libav'
2505 incdir_default='${prefix}/include'
2506 libdir_default='${prefix}/lib'
2507 mandir_default='${prefix}/share/man'
2508 shlibdir_default="$libdir_default"
2509
2510 # toolchain
2511 ar_default="ar"
2512 cc_default="gcc"
2513 host_cc_default="gcc"
2514 ln_s="ln -s -f"
2515 nm_default="nm -g"
2516 objformat="elf"
2517 pkg_config_default=pkg-config
2518 ranlib="ranlib"
2519 strip="strip"
2520 version_script='--version-script'
2521 yasmexe="yasm"
2522
2523 # machine
2524 arch_default=$(uname -m)
2525 cpu="generic"
2526 intrinsics="none"
2527
2528 # OS
2529 target_os_default=$(tolower $(uname -s))
2530 host_os=$target_os_default
2531
2532 # configurable options
2533 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2534
2535 enable asm
2536 enable debug
2537 enable doc
2538 enable faan faandct faanidct
2539 enable optimizations
2540 enable safe_bitstream_reader
2541 enable static
2542 enable swscale_alpha
2543 enable valgrind_backtrace
2544
2545 # By default, enable only those hwaccels that have no external dependencies.
2546 enable d3d11va dxva2 vda vdpau
2547
2548 # build settings
2549 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2550 LIBPREF="lib"
2551 LIBSUF=".a"
2552 LIBNAME='$(LIBPREF)$(NAME)$(LIBSUF)'
2553 SLIBPREF="lib"
2554 SLIBSUF=".so"
2555 SLIBNAME='$(SLIBPREF)$(NAME)$(SLIBSUF)'
2556 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2557 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2558 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2559 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2560 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2561 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2562
2563 asflags_filter=echo
2564 cflags_filter=echo
2565 ldflags_filter=echo
2566
2567 AS_C='-c'
2568 AS_O='-o $@'
2569 CC_C='-c'
2570 CC_E='-E -o $@'
2571 CC_O='-o $@'
2572 OBJCC_C='-c'
2573 OBJCC_E='-E -o $@'
2574 OBJCC_O='-o $@'
2575 LD_O='-o $@'
2576 LD_LIB='-l%'
2577 LD_PATH='-L'
2578 HOSTCC_C='-c'
2579 HOSTCC_E='-E -o $@'
2580 HOSTCC_O='-o $@'
2581 HOSTLD_O='-o $@'
2582
2583 host_extralibs='-lm'
2584 host_cflags_filter=echo
2585 host_ldflags_filter=echo
2586
2587 target_path='$(CURDIR)'
2588
2589 # since the object filename is not given with the -MM flag, the compiler
2590 # is only able to print the basename, and we must add the path ourselves
2591 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2592 DEPFLAGS='-MM'
2593
2594 # find source path
2595 if test -f configure; then
2596     source_path=.
2597 else
2598     source_path=$(cd $(dirname "$0"); pwd)
2599     echo "$source_path" | grep -q '[[:blank:]]' &&
2600         die "Out of tree builds are impossible with whitespace in source path."
2601     test -e "$source_path/config.h" &&
2602         die "Out of tree builds are impossible with config.h in source dir."
2603 fi
2604
2605 for v in "$@"; do
2606     r=${v#*=}
2607     l=${v%"$r"}
2608     r=$(sh_quote "$r")
2609     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2610 done
2611
2612 find_things(){
2613     thing=$1
2614     pattern=$2
2615     file=$source_path/$3
2616     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2617 }
2618
2619 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2620 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2621 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2622 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2623 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2624 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2625 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2626 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2627 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2628
2629 find_things_extern(){
2630     thing=$1
2631     pattern=$2
2632     file=$source_path/$3
2633     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2634 }
2635
2636 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2637 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2638
2639 ALL_COMPONENTS="
2640     $BSF_LIST
2641     $DECODER_LIST
2642     $DEMUXER_LIST
2643     $ENCODER_LIST
2644     $FILTER_LIST
2645     $HWACCEL_LIST
2646     $INDEV_LIST
2647     $MUXER_LIST
2648     $OUTDEV_LIST
2649     $PARSER_LIST
2650     $PROTOCOL_LIST
2651 "
2652
2653 for n in $COMPONENT_LIST; do
2654     v=$(toupper ${n%s})_LIST
2655     eval enable \$$v
2656     eval ${n}_if_any="\$$v"
2657 done
2658
2659 enable $ARCH_EXT_LIST
2660
2661 die_unknown(){
2662     echo "Unknown option \"$1\"."
2663     echo "See $0 --help for available options."
2664     exit 1
2665 }
2666
2667 print_3_columns() {
2668     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2669 }
2670
2671 show_list() {
2672     suffix=_$1
2673     shift
2674     echo $* | sed s/$suffix//g | print_3_columns
2675     exit 0
2676 }
2677
2678 rand_list(){
2679     IFS=', '
2680     set -- $*
2681     unset IFS
2682     for thing; do
2683         comp=${thing%:*}
2684         prob=${thing#$comp}
2685         prob=${prob#:}
2686         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2687         echo "prob ${prob:-0.5}"
2688         printf '%s\n' $comp
2689     done
2690 }
2691
2692 do_random(){
2693     action=$1
2694     shift
2695     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2696     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2697 }
2698
2699 for opt do
2700     optval="${opt#*=}"
2701     case "$opt" in
2702         --extra-ldflags=*)
2703             add_ldflags $optval
2704         ;;
2705         --extra-ldexeflags=*)
2706             add_ldexeflags $optval
2707         ;;
2708         --extra-libs=*)
2709             add_extralibs $optval
2710         ;;
2711         --disable-devices)
2712             disable $INDEV_LIST $OUTDEV_LIST
2713         ;;
2714         --enable-debug=*)
2715             debuglevel="$optval"
2716         ;;
2717         --disable-programs)
2718             disable $PROGRAM_LIST
2719         ;;
2720         --disable-everything)
2721             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2722         ;;
2723         --disable-all)
2724             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2725             disable $LIBRARY_LIST $PROGRAM_LIST doc
2726         ;;
2727         --enable-random|--disable-random)
2728             action=${opt%%-random}
2729             do_random ${action#--} $COMPONENT_LIST
2730         ;;
2731         --enable-random=*|--disable-random=*)
2732             action=${opt%%-random=*}
2733             do_random ${action#--} $optval
2734         ;;
2735         --enable-*=*|--disable-*=*)
2736             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2737             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2738             eval list=\$$(toupper $thing)_LIST
2739             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2740             $action $(filter "$name" $list)
2741         ;;
2742         --enable-avserver|--disable-avserver*)
2743             warn "avserver has been removed, the ${opt} option is only"\
2744                  "provided for compatibility and will be removed in the future"
2745         ;;
2746         --enable-?*|--disable-?*)
2747             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2748             if is_in $option $COMPONENT_LIST; then
2749                 test $action = disable && action=unset
2750                 eval $action \$$(toupper ${option%s})_LIST
2751             elif is_in $option $CMDLINE_SELECT; then
2752                 $action $option
2753             else
2754                 die_unknown $opt
2755             fi
2756         ;;
2757         --list-*)
2758             NAME="${opt#--list-}"
2759             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2760             NAME=${NAME%s}
2761             eval show_list $NAME \$$(toupper $NAME)_LIST
2762         ;;
2763         --help|-h) show_help
2764         ;;
2765         --quiet|-q) quiet=yes
2766         ;;
2767         *)
2768             optname="${opt%%=*}"
2769             optname="${optname#--}"
2770             optname=$(echo "$optname" | sed 's/-/_/g')
2771             if is_in $optname $CMDLINE_SET; then
2772                 eval $optname='$optval'
2773             elif is_in $optname $CMDLINE_APPEND; then
2774                 append $optname "$optval"
2775             else
2776                 die_unknown $opt
2777             fi
2778         ;;
2779     esac
2780 done
2781
2782 for e in $env; do
2783     eval "export $e"
2784 done
2785
2786 disabled logging && logfile=/dev/null
2787
2788 # Die early if licensing-related configure options are incompatible.
2789 die_license_disabled() {
2790     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2791 }
2792
2793 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
2794 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2795 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2796
2797 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2798
2799 # Disable all the library-specific components if the library itself
2800 # is disabled, see AVCODEC_LIST and following _LIST variables.
2801
2802 disable_components(){
2803     disabled ${1} && disable $(
2804         eval components="\$$(toupper ${1})_COMPONENTS"
2805         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2806     )
2807 }
2808
2809 map 'disable_components $v' $LIBRARY_LIST
2810
2811 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2812 set >> $logfile
2813
2814 case "$toolchain" in
2815     *-asan)
2816         cc_default="${toolchain%-asan}"
2817         add_cflags  -fsanitize=address
2818         add_ldflags -fsanitize=address
2819     ;;
2820     *-msan)
2821         cc_default="${toolchain%-msan}"
2822         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2823         add_ldflags -fsanitize=memory
2824     ;;
2825     *-tsan)
2826         cc_default="${toolchain%-tsan}"
2827         add_cflags  -fsanitize=thread -fPIE
2828         add_ldflags -fsanitize=thread -pie
2829         case "$toolchain" in
2830             gcc-tsan)
2831                 add_cflags  -fPIC
2832                 add_ldflags -fPIC
2833                 ;;
2834         esac
2835     ;;
2836     *-usan)
2837         cc_default="${toolchain%-usan}"
2838         add_cflags  -fsanitize=undefined
2839         add_ldflags -fsanitize=undefined
2840         case "$toolchain" in
2841             clang-usan)
2842                 add_cflags -O1
2843                 ;;
2844         esac
2845     ;;
2846     valgrind-*)
2847         target_exec_default="valgrind"
2848         case "$toolchain" in
2849             valgrind-massif)
2850                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2851                 ;;
2852             valgrind-memcheck)
2853                 target_exec_args="--track-origins=yes --leak-check=full"
2854                 ;;
2855         esac
2856     ;;
2857     msvc)
2858         # Check whether the current MSVC version needs the C99 converter.
2859         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2860         # support enough of C99 to build libav. Default to the new
2861         # behaviour if the regexp was unable to match anything, since this
2862         # successfully parses the version number of existing supported
2863         # versions that require the converter (MSVC 2010 and 2012).
2864         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2865         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2866             cc_default="cl"
2867         else
2868             cc_default="c99wrap cl"
2869         fi
2870         ld_default="$source_path/compat/windows/mslink"
2871         nm_default="dumpbin -symbols"
2872         ar_default="lib"
2873         case "$arch" in
2874         arm*)
2875             as_default="armasm"
2876             ;;
2877         esac
2878         target_os_default="win32"
2879         # Use a relative path for TMPDIR. This makes sure all the
2880         # ffconf temp files are written with a relative path, avoiding
2881         # issues with msys/win32 path conversion for MSVC parameters
2882         # such as -Fo<file> or -out:<file>.
2883         TMPDIR=.
2884     ;;
2885     icl)
2886         cc_default="icl"
2887         ld_default="xilink"
2888         nm_default="dumpbin -symbols"
2889         ar_default="xilib"
2890         target_os_default="win32"
2891         TMPDIR=.
2892     ;;
2893     gcov)
2894         add_cflags  -fprofile-arcs -ftest-coverage
2895         add_ldflags -fprofile-arcs -ftest-coverage
2896     ;;
2897     llvm-cov)
2898         add_cflags -fprofile-arcs -ftest-coverage
2899         add_ldflags --coverage
2900     ;;
2901     hardened)
2902         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2903         add_cflags   -fno-strict-overflow -fstack-protector-all
2904         add_ldflags  -Wl,-z,relro -Wl,-z,now
2905     ;;
2906     ?*)
2907         die "Unknown toolchain $toolchain"
2908     ;;
2909 esac
2910
2911 test -n "$cross_prefix" && enable cross_compile
2912
2913 if enabled cross_compile; then
2914     test -n "$arch" && test -n "$target_os" ||
2915         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
2916 fi
2917
2918 ar_default="${cross_prefix}${ar_default}"
2919 cc_default="${cross_prefix}${cc_default}"
2920 occ_default="${cross_prefix}${occ_default}"
2921 nm_default="${cross_prefix}${nm_default}"
2922 pkg_config_default="${cross_prefix}${pkg_config_default}"
2923 ranlib="${cross_prefix}${ranlib}"
2924 strip="${cross_prefix}${strip}"
2925
2926 sysinclude_default="${sysroot}/usr/include"
2927
2928 set_default arch cc pkg_config sysinclude target_exec target_os
2929 enabled cross_compile || host_cc_default=$cc
2930 set_default host_cc
2931
2932 if ! $pkg_config --version >/dev/null 2>&1; then
2933     warn "$pkg_config not found, library detection may fail."
2934     pkg_config=false
2935 fi
2936
2937 exesuf() {
2938     case $1 in
2939         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2940     esac
2941 }
2942
2943 EXESUF=$(exesuf $target_os)
2944 HOSTEXESUF=$(exesuf $host_os)
2945
2946 # set temporary file name
2947 : ${TMPDIR:=$TEMPDIR}
2948 : ${TMPDIR:=$TMP}
2949 : ${TMPDIR:=/tmp}
2950
2951 if ! check_cmd mktemp -u XXXXXX; then
2952     # simple replacement for missing mktemp
2953     # NOT SAFE FOR GENERAL USE
2954     mktemp(){
2955         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2956     }
2957 fi
2958
2959 tmpfile(){
2960     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2961         (set -C; exec > $tmp) 2>/dev/null ||
2962         die "Unable to create temporary file in $TMPDIR."
2963     append TMPFILES $tmp
2964     eval $1=$tmp
2965 }
2966
2967 trap 'rm -f -- $TMPFILES' EXIT
2968
2969 tmpfile TMPASM .asm
2970 tmpfile TMPC   .c
2971 tmpfile TMPE   $EXESUF
2972 tmpfile TMPH   .h
2973 tmpfile TMPO   .o
2974 tmpfile TMPS   .S
2975 tmpfile TMPSH  .sh
2976 tmpfile TMPV   .ver
2977
2978 unset -f mktemp
2979
2980 chmod +x $TMPE
2981
2982 # make sure we can execute files in $TMPDIR
2983 cat > $TMPSH 2>> $logfile <<EOF
2984 #! /bin/sh
2985 EOF
2986 chmod +x $TMPSH >> $logfile 2>&1
2987 if ! $TMPSH >> $logfile 2>&1; then
2988     cat <<EOF
2989 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2990 variable to another directory and make sure that it is not mounted noexec.
2991 EOF
2992     die "Sanity test failed."
2993 fi
2994
2995 armasm_flags(){
2996     for flag; do
2997         case $flag in
2998             # Filter out MSVC cl.exe options from cflags that shouldn't
2999             # be passed to gas-preprocessor
3000             -M[TD]*)                                            ;;
3001             *)                  echo $flag                      ;;
3002         esac
3003    done
3004 }
3005
3006 ccc_flags(){
3007     for flag; do
3008         case $flag in
3009             -std=c99)           echo -c99                       ;;
3010             -mcpu=*)            echo -arch ${flag#*=}           ;;
3011             -mieee)             echo -ieee                      ;;
3012             -O*|-fast)          echo $flag                      ;;
3013             -fno-math-errno)    echo -assume nomath_errno       ;;
3014             -g)                 echo -g3                        ;;
3015             -Wall)              echo -msg_enable level2         ;;
3016             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3017             -Wl,*)              echo $flag                      ;;
3018             -f*|-W*)                                            ;;
3019             *)                  echo $flag                      ;;
3020         esac
3021    done
3022 }
3023
3024 cparser_flags(){
3025     for flag; do
3026         case $flag in
3027             -Wno-switch)             echo -Wno-switch-enum ;;
3028             -Wno-format-zero-length) ;;
3029             -Wdisabled-optimization) ;;
3030             -Wno-pointer-sign)       echo -Wno-other ;;
3031             *)                       echo $flag ;;
3032         esac
3033     done
3034 }
3035
3036 msvc_common_flags(){
3037     for flag; do
3038         case $flag in
3039             # In addition to specifying certain flags under the compiler
3040             # specific filters, they must be specified here as well or else the
3041             # generic catch all at the bottom will print the original flag.
3042             -Wall)                ;;
3043             -std=c99)             ;;
3044             # Common flags
3045             -fomit-frame-pointer) ;;
3046             -g)                   echo -Z7 ;;
3047             -fno-math-errno)      ;;
3048             -fno-common)          ;;
3049             -fno-signed-zeros)    ;;
3050             -fPIC)                ;;
3051             -mthumb)              ;;
3052             -march=*)             ;;
3053             -lz)                  echo zlib.lib ;;
3054             -lx264)               echo libx264.lib ;;
3055             -l*)                  echo ${flag#-l}.lib ;;
3056             -L*)                  echo -libpath:${flag#-L} ;;
3057             *)                    echo $flag ;;
3058         esac
3059     done
3060 }
3061
3062 msvc_flags(){
3063     msvc_common_flags "$@"
3064     for flag; do
3065         case $flag in
3066             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3067                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3068                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3069                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3070         esac
3071     done
3072 }
3073
3074 icl_flags(){
3075     msvc_common_flags "$@"
3076     for flag; do
3077         case $flag in
3078             # Despite what Intel's documentation says -Wall, which is supported
3079             # on Windows, does enable remarks so disable them here.
3080             -Wall)                echo $flag -Qdiag-disable:remark ;;
3081             -std=c99)             echo -Qstd=c99 ;;
3082         esac
3083     done
3084 }
3085
3086 pgi_flags(){
3087     for flag; do
3088         case $flag in
3089             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3090             -fomit-frame-pointer) echo -Mnoframe ;;
3091             -g)                   echo -gopt ;;
3092             *)                    echo $flag ;;
3093         esac
3094     done
3095 }
3096
3097 suncc_flags(){
3098     for flag; do
3099         case $flag in
3100             -march=*|-mcpu=*)
3101                 case "${flag#*=}" in
3102                     native)                   echo -xtarget=native       ;;
3103                     v9|niagara)               echo -xarch=sparc          ;;
3104                     ultrasparc)               echo -xarch=sparcvis       ;;
3105                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3106                     i586|pentium)             echo -xchip=pentium        ;;
3107                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3108                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3109                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3110                     pentium4*)          echo -xtarget=pentium4           ;;
3111                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3112                     *-sse3)             echo -xarch=sse3                 ;;
3113                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3114                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3115                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3116                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3117                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3118                     k8|opteron|athlon64|athlon-fx)
3119                                                echo -xarch=sse2a         ;;
3120                     athlon*)                   echo -xarch=pentium_proa  ;;
3121                 esac
3122                 ;;
3123             -std=c99)             echo -xc99              ;;
3124             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3125             -fPIC)                echo -KPIC -xcode=pic32 ;;
3126             -W*,*)                echo $flag              ;;
3127             -f*-*|-W*|-mimpure-text)                      ;;
3128             -shared)              echo -G                 ;;
3129             *)                    echo $flag              ;;
3130         esac
3131     done
3132 }
3133
3134 tms470_flags(){
3135     for flag; do
3136         case $flag in
3137             -march=*|-mcpu=*)
3138                 case "${flag#*=}" in
3139                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3140                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3141                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3142                     armv6*|arm11*)          echo -mv=6   ;;
3143                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3144                                             echo -mv=5e  ;;
3145                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3146                 esac
3147                 ;;
3148             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3149             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3150             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3151             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3152             -msoft-float)   echo --float_support=vfplib       ;;
3153             -O[0-3]|-mf=*)  echo $flag                        ;;
3154             -g)             echo -g -mn                       ;;
3155             -pds=*)         echo $flag                        ;;
3156             -D*|-I*)        echo $flag                        ;;
3157             --gcc|--abi=*)  echo $flag                        ;;
3158             -me)            echo $flag                        ;;
3159         esac
3160     done
3161 }
3162
3163 probe_cc(){
3164     pfx=$1
3165     _cc=$2
3166
3167     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3168     unset _ld_o _ldflags _ld_lib _ld_path
3169     unset _depflags _DEPCMD _DEPFLAGS
3170     _flags_filter=echo
3171
3172     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3173         _type=llvm_gcc
3174         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3175         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3176         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3177         _cflags_speed='-O3'
3178         _cflags_size='-Os'
3179     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3180         _type=gcc
3181         gcc_version=$($_cc --version | head -n1)
3182         gcc_basever=$($_cc -dumpversion)
3183         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3184         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3185         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3186         if ! $_cc -dumpversion | grep -q '^2\.'; then
3187             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3188         fi
3189         _cflags_speed='-O3'
3190         _cflags_size='-Os'
3191     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3192         _type=icc
3193         _ident=$($_cc --version | head -n1)
3194         _depflags='-MMD'
3195         _cflags_speed='-O3'
3196         _cflags_size='-Os'
3197         _cflags_noopt='-O1'
3198     elif $_cc -v 2>&1 | grep -q xlc; then
3199         _type=xlc
3200         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3201         _cflags_speed='-O5'
3202         _cflags_size='-O5 -qcompact'
3203     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3204         _type=ccc
3205         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3206         _DEPFLAGS='-M'
3207         _cflags_speed='-fast'
3208         _cflags_size='-O1'
3209         _flags_filter=ccc_flags
3210     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3211         test -d "$sysroot" || die "No valid sysroot specified."
3212         _type=armcc
3213         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3214         armcc_conf="$PWD/armcc.conf"
3215         $_cc --arm_linux_configure                 \
3216              --arm_linux_config_file="$armcc_conf" \
3217              --configure_sysroot="$sysroot"        \
3218              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3219              die "Error creating armcc configuration file."
3220         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3221         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3222         as_default="${cross_prefix}gcc"
3223         _depflags='-MMD'
3224         _cflags_speed='-O3'
3225         _cflags_size='-Os'
3226     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3227         _type=tms470
3228         _ident=$($_cc -version | head -n1 | tr -s ' ')
3229         _flags='--gcc --abi=eabi -me'
3230         _cc_e='-ppl -fe=$@'
3231         _cc_o='-fe=$@'
3232         _depflags='-ppa -ppd=$(@:.o=.d)'
3233         _cflags_speed='-O3 -mf=5'
3234         _cflags_size='-O3 -mf=2'
3235         _flags_filter=tms470_flags
3236     elif $_cc -v 2>&1 | grep -q clang; then
3237         _type=clang
3238         _ident=$($_cc --version 2>/dev/null | head -n1)
3239         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3240         _cflags_speed='-O3'
3241         _cflags_size='-Os'
3242     elif $_cc -V 2>&1 | grep -q Sun; then
3243         _type=suncc
3244         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3245         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3246         _DEPFLAGS='-xM1 -xc99'
3247         _ldflags='-std=c99'
3248         _cflags_speed='-O5'
3249         _cflags_size='-O5 -xspace'
3250         _flags_filter=suncc_flags
3251     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3252         _type=pathscale
3253         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3254         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3255         _cflags_speed='-O2'
3256         _cflags_size='-Os'
3257         _flags_filter='filter_out -Wdisabled-optimization'
3258     elif $_cc -v 2>&1 | grep -q Open64; then
3259         _type=open64
3260         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3261         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3262         _cflags_speed='-O2'
3263         _cflags_size='-Os'
3264         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3265     elif $_cc -V 2>&1 | grep -q Portland; then
3266         _type=pgi
3267         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3268         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3269         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3270         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3271         _cflags_noopt="-O1"
3272         _flags_filter=pgi_flags
3273     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3274         _type=armasm
3275         _ident=$($_cc | head -n1)
3276         # 4509: "This form of conditional instruction is deprecated"
3277         _flags="-nologo -ignore 4509"
3278         _flags_filter=armasm_flags
3279     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3280         _type=msvc
3281         _ident=$($_cc 2>&1 | head -n1)
3282         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3283         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3284         _cflags_speed="-O2"
3285         _cflags_size="-O1"
3286         _cflags_noopt="-O1"
3287         if $_cc -nologo- 2>&1 | grep -q Linker; then
3288             _ld_o='-out:$@'
3289         else
3290             _ld_o='-Fe$@'
3291         fi
3292         _cc_o='-Fo$@'
3293         _cc_e='-P -Fi$@'
3294         _flags_filter=msvc_flags
3295         _ld_lib='lib%.a'
3296         _ld_path='-libpath:'
3297         _flags='-nologo'
3298     elif $_cc 2>&1 | grep -q Intel; then
3299         _type=icl
3300         _ident=$($_cc 2>&1 | head -n1)
3301         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3302         # Not only is O3 broken on 13.x+ but it is slower on all previous
3303         # versions (tested) as well.
3304         _cflags_speed="-O2"
3305         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3306         if $_cc 2>&1 | grep -q Linker; then
3307             _ld_o='-out:$@'
3308         else
3309             _ld_o='-Fe$@'
3310         fi
3311         _cc_o='-Fo$@'
3312         _cc_e='-P'
3313         _flags_filter=icl_flags
3314         _ld_lib='lib%.a'
3315         _ld_path='-libpath:'
3316         # -Qdiag-error to make icl error when seeing certain unknown arguments
3317         _flags='-nologo -Qdiag-error:4044,10157'
3318         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3319         # with MSVC which enables it by default.
3320         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3321     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3322         # lld can emulate multiple different linkers; in ms link.exe mode,
3323         # the -? parameter gives the help output which contains an identifyable
3324         # string, while it gives an error in other modes.
3325         _type=lld-link
3326         # The link.exe mode doesn't have a switch for getting the version,
3327         # but we can force it back to gnu mode and get the version from there.
3328         _ident=$($_cc -flavor gnu --version 2>/dev/null)
3329         _ld_o='-out:$@'
3330         _flags_filter=msvc_flags
3331         _ld_lib='lib%.a'
3332         _ld_path='-libpath:'
3333     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3334         _type=cparser
3335         _ident=$($_cc --version | head -n1)
3336         _depflags='-MMD'
3337         _cflags_speed='-O4'
3338         _cflags_size='-O2'
3339         _flags_filter=cparser_flags
3340     fi
3341
3342     eval ${pfx}_type=\$_type
3343     eval ${pfx}_ident=\$_ident
3344 }
3345
3346 set_ccvars(){
3347     eval ${1}_C=\${_cc_c-\${${1}_C}}
3348     eval ${1}_E=\${_cc_e-\${${1}_E}}
3349     eval ${1}_O=\${_cc_o-\${${1}_O}}
3350
3351     if [ -n "$_depflags" ]; then
3352         eval ${1}_DEPFLAGS=\$_depflags
3353     else
3354         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3355         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3356         eval DEP${1}FLAGS=\$_flags
3357     fi
3358 }
3359
3360 probe_cc cc "$cc"
3361 cflags_filter=$_flags_filter
3362 cflags_speed=$_cflags_speed
3363 cflags_size=$_cflags_size
3364 cflags_noopt=$_cflags_noopt
3365 add_cflags $_flags $_cflags
3366 cc_ldflags=$_ldflags
3367 set_ccvars CC
3368
3369 probe_cc hostcc "$host_cc"
3370 host_cflags_filter=$_flags_filter
3371 add_host_cflags  $_flags $_cflags
3372 set_ccvars HOSTCC
3373
3374 test -n "$cc_type" && enable $cc_type ||
3375     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3376
3377 : ${as_default:=$cc}
3378 : ${objcc_default:=$cc}
3379 : ${dep_cc_default:=$cc}
3380 : ${ld_default:=$cc}
3381 : ${host_ld_default:=$host_cc}
3382 set_default ar as objcc dep_cc ld host_ld
3383
3384 probe_cc as "$as"
3385 asflags_filter=$_flags_filter
3386 add_asflags $_flags $_cflags
3387 set_ccvars AS
3388
3389 probe_cc objcc "$objcc"
3390 objcflags_filter=$_flags_filter
3391 add_objcflags $_flags $_cflags
3392 set_ccvars OBJC
3393
3394 probe_cc ld "$ld"
3395 ldflags_filter=$_flags_filter
3396 add_ldflags $_flags $_ldflags
3397 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3398 LD_O=${_ld_o-$LD_O}
3399 LD_LIB=${_ld_lib-$LD_LIB}
3400 LD_PATH=${_ld_path-$LD_PATH}
3401
3402 probe_cc hostld "$host_ld"
3403 host_ldflags_filter=$_flags_filter
3404 add_host_ldflags $_flags $_ldflags
3405 HOSTLD_O=${_ld_o-$HOSTLD_O}
3406
3407 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3408     probe_cc depcc "$dep_cc"
3409     CCDEP=${_DEPCMD:-$DEPCMD}
3410     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3411     DEPCCFLAGS=$_flags
3412 fi
3413
3414 if $ar 2>&1 | grep -q Microsoft; then
3415     arflags="-nologo"
3416     ar_o='-out:$@'
3417 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3418     arflags="rq"
3419     ar_o='$@'
3420 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3421     arflags='-Xany -r -c'
3422     ar_o='$@'
3423 else
3424     arflags="rc"
3425     ar_o='$@'
3426 fi
3427
3428 add_cflags $extra_cflags
3429 add_objcflags $extra_objcflags
3430 add_asflags $extra_cflags
3431
3432 if test -n "$sysroot"; then
3433     case "$cc_type" in
3434         gcc|llvm_gcc|clang)
3435             add_cppflags --sysroot="$sysroot"
3436             add_ldflags --sysroot="$sysroot"
3437         ;;
3438         tms470)
3439             add_cppflags -I"$sysinclude"
3440             add_ldflags  --sysroot="$sysroot"
3441         ;;
3442     esac
3443 fi
3444
3445 if test "$cpu" = host; then
3446     enabled cross_compile &&
3447         die "--cpu=host makes no sense when cross-compiling."
3448
3449     case "$cc_type" in
3450         gcc|llvm_gcc)
3451             check_native(){
3452                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3453                 sed -n "/cc1.*$1=/{
3454                             s/.*$1=\\([^ ]*\\).*/\\1/
3455                             p
3456                             q
3457                         }" $TMPE
3458             }
3459             cpu=$(check_native -march || check_native -mcpu)
3460         ;;
3461     esac
3462
3463     test "${cpu:-host}" = host &&
3464         die "--cpu=host not supported with compiler $cc"
3465 fi
3466
3467 # Deal with common $arch aliases
3468 case "$arch" in
3469     aarch64|arm64)
3470         arch="aarch64"
3471     ;;
3472     arm*)
3473         arch="arm"
3474     ;;
3475     mips*|IP*)
3476         case "$arch" in
3477         *el)
3478             add_cppflags -EL
3479             add_ldflags -EL
3480         ;;
3481         *eb)
3482             add_cppflags -EB
3483             add_ldflags -EB
3484         ;;
3485         esac
3486         arch="mips"
3487     ;;
3488     parisc*|hppa*)
3489         arch="parisc"
3490     ;;
3491     "Power Macintosh"|ppc*|powerpc*)
3492         arch="ppc"
3493     ;;
3494     s390|s390x)
3495         arch="s390"
3496     ;;
3497     sh4|sh)
3498         arch="sh4"
3499     ;;
3500     sun4u|sparc*)
3501         arch="sparc"
3502     ;;
3503     tilegx|tile-gx)
3504         arch="tilegx"
3505     ;;
3506     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3507         arch="x86"
3508     ;;
3509 esac
3510
3511 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3512 enable $arch
3513
3514 # Add processor-specific flags
3515 if enabled aarch64; then
3516
3517     case $cpu in
3518         armv*)
3519             cpuflags="-march=$cpu"
3520         ;;
3521         *)
3522             cpuflags="-mcpu=$cpu"
3523         ;;
3524     esac
3525
3526 elif enabled alpha; then
3527
3528     cpuflags="-mcpu=$cpu"
3529
3530 elif enabled arm; then
3531
3532     check_arm_arch() {
3533         check_cpp_condition stddef.h \
3534             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3535             $cpuflags
3536     }
3537
3538     probe_arm_arch() {
3539         if   check_arm_arch 4;        then echo armv4
3540         elif check_arm_arch 4T;       then echo armv4t
3541         elif check_arm_arch 5;        then echo armv5
3542         elif check_arm_arch 5E;       then echo armv5e
3543         elif check_arm_arch 5T;       then echo armv5t
3544         elif check_arm_arch 5TE;      then echo armv5te
3545         elif check_arm_arch 5TEJ;     then echo armv5te
3546         elif check_arm_arch 6;        then echo armv6
3547         elif check_arm_arch 6J;       then echo armv6j
3548         elif check_arm_arch 6K;       then echo armv6k
3549         elif check_arm_arch 6Z;       then echo armv6z
3550         elif check_arm_arch 6ZK;      then echo armv6zk
3551         elif check_arm_arch 6T2;      then echo armv6t2
3552         elif check_arm_arch 7;        then echo armv7
3553         elif check_arm_arch 7A  7_A;  then echo armv7-a
3554         elif check_arm_arch 7S;       then echo armv7-a
3555         elif check_arm_arch 7R  7_R;  then echo armv7-r
3556         elif check_arm_arch 7M  7_M;  then echo armv7-m
3557         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3558         elif check_arm_arch 8A  8_A;  then echo armv8-a
3559         fi
3560     }
3561
3562     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3563
3564     case $cpu in
3565         armv*)
3566             cpuflags="-march=$cpu"
3567             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3568         ;;
3569         *)
3570             cpuflags="-mcpu=$cpu"
3571             case $cpu in
3572                 cortex-a*)                               subarch=armv7a  ;;
3573                 cortex-r*)                               subarch=armv7r  ;;
3574                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3575                 arm11*)                                  subarch=armv6   ;;
3576                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3577                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3578                 *)                             subarch=$(probe_arm_arch) ;;
3579             esac
3580         ;;
3581     esac
3582
3583     case "$subarch" in
3584         armv5t*)    enable fast_clz                ;;
3585         armv[6-8]*) enable fast_clz fast_unaligned ;;
3586     esac
3587
3588 elif enabled avr32; then
3589
3590     case $cpu in
3591         ap7[02]0[0-2])
3592             subarch="avr32_ap"
3593             cpuflags="-mpart=$cpu"
3594         ;;
3595         ap)
3596             subarch="avr32_ap"
3597             cpuflags="-march=$cpu"
3598         ;;
3599         uc3[ab]*)
3600             subarch="avr32_uc"
3601             cpuflags="-mcpu=$cpu"
3602         ;;
3603         uc)
3604             subarch="avr32_uc"
3605             cpuflags="-march=$cpu"
3606         ;;
3607     esac
3608
3609 elif enabled bfin; then
3610
3611     cpuflags="-mcpu=$cpu"
3612
3613 elif enabled mips; then
3614
3615     cpuflags="-march=$cpu"
3616
3617 elif enabled ppc; then
3618
3619     disable ldbrx
3620
3621     case $(tolower $cpu) in
3622         601|ppc601|powerpc601)
3623             cpuflags="-mcpu=601"
3624             disable altivec
3625         ;;
3626         603*|ppc603*|powerpc603*)
3627             cpuflags="-mcpu=603"
3628             disable altivec
3629         ;;
3630         604*|ppc604*|powerpc604*)
3631             cpuflags="-mcpu=604"
3632             disable altivec
3633         ;;
3634         g3|75*|ppc75*|powerpc75*)
3635             cpuflags="-mcpu=750"
3636             disable altivec
3637         ;;
3638         g4|745*|ppc745*|powerpc745*)
3639             cpuflags="-mcpu=7450"
3640             disable vsx
3641         ;;
3642         74*|ppc74*|powerpc74*)
3643             cpuflags="-mcpu=7400"
3644             disable vsx
3645         ;;
3646         g5|970|ppc970|powerpc970)
3647             cpuflags="-mcpu=970"
3648             disable vsx
3649         ;;
3650         power[3-6]*)
3651             cpuflags="-mcpu=$cpu"
3652             disable vsx
3653         ;;
3654         power[7-8]*)
3655             cpuflags="-mcpu=$cpu"
3656             enable ldbrx
3657         ;;
3658         cell)
3659             cpuflags="-mcpu=cell"
3660             enable ldbrx
3661             disable vsx
3662         ;;
3663         e500mc)
3664             cpuflags="-mcpu=e500mc"
3665             disable altivec
3666         ;;
3667         e500v2)
3668             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3669             disable altivec
3670             disable dcbzl
3671         ;;
3672         e500)
3673             cpuflags="-mcpu=8540 -mhard-float"
3674             disable altivec
3675             disable dcbzl
3676         ;;
3677     esac
3678
3679 elif enabled sparc; then
3680
3681     case $cpu in
3682         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3683             cpuflags="-mcpu=$cpu"
3684         ;;
3685         ultrasparc*|niagara[234])
3686             cpuflags="-mcpu=$cpu"
3687         ;;
3688     esac
3689
3690 elif enabled x86; then
3691
3692     case $cpu in
3693         i[345]86|pentium)
3694             cpuflags="-march=$cpu"
3695             disable i686
3696             disable mmx
3697         ;;
3698         # targets that do NOT support nopl and conditional mov (cmov)
3699         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3700             cpuflags="-march=$cpu"
3701             disable i686
3702         ;;
3703         # targets that do support nopl and conditional mov (cmov)
3704         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3705             cpuflags="-march=$cpu"
3706             enable i686
3707             enable fast_cmov
3708         ;;
3709         # targets that do support conditional mov but on which it's slow
3710         pentium4|pentium4m|prescott|nocona)
3711             cpuflags="-march=$cpu"
3712             enable i686
3713             disable fast_cmov
3714         ;;
3715     esac
3716
3717 fi
3718
3719 if [ "$cpu" != generic ]; then
3720     add_cflags  $cpuflags
3721     add_asflags $cpuflags
3722     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3723 fi
3724
3725 # compiler sanity check
3726 check_exec <<EOF
3727 int main(void){ return 0; }
3728 EOF
3729 if test "$?" != 0; then
3730     echo "$cc is unable to create an executable file."
3731     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3732         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3733         echo "Only do this if you know what cross compiling means."
3734     fi
3735     die "C compiler test failed."
3736 fi
3737
3738 add_cppflags -D_ISOC99_SOURCE
3739
3740 # some compilers silently accept -std=c11, so we also need to check that the
3741 # version macro is defined properly
3742 if test_cflags_cpp -std=c11 "__STDC_VERSION__ >= 201112L"; then
3743     add_cflags -std=c11
3744 else
3745     check_cflags -std=c99
3746 fi
3747
3748 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3749 #include <stdlib.h>
3750 EOF
3751 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3752 #include <stdlib.h>
3753 EOF
3754
3755 add_host_cppflags -D_ISOC99_SOURCE
3756 check_host_cflags -std=c99
3757 check_host_cflags -Wall
3758 check_host_cflags -O3
3759
3760 check_64bit(){
3761     arch32=$1
3762     arch64=$2
3763     expr=$3
3764     check_code cc "" "int test[2*($expr) - 1]" &&
3765         subarch=$arch64 || subarch=$arch32
3766 }
3767
3768 case "$arch" in
3769     aarch64|alpha|ia64)
3770         spic=$shared
3771     ;;
3772     mips)
3773         check_64bit mips mips64 '_MIPS_SIM > 1'
3774         spic=$shared
3775     ;;
3776     parisc)
3777         check_64bit parisc parisc64 'sizeof(void *) > 4'
3778         spic=$shared
3779     ;;
3780     ppc)
3781         check_64bit ppc ppc64 'sizeof(void *) > 4'
3782         spic=$shared
3783     ;;
3784     s390)
3785         check_64bit s390 s390x 'sizeof(void *) > 4'
3786         spic=$shared
3787     ;;
3788     sparc)
3789         check_64bit sparc sparc64 'sizeof(void *) > 4'
3790         spic=$shared
3791     ;;
3792     x86)
3793         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3794         if test "$subarch" = "x86_64"; then
3795             spic=$shared
3796         fi
3797     ;;
3798 esac
3799
3800 enable $subarch
3801 enabled spic && enable_weak pic
3802
3803 # OS specific
3804 case $target_os in
3805     aix)
3806         SHFLAGS=-shared
3807         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3808         enabled shared && add_ldflags -Wl,-brtl
3809         ;;
3810     android)
3811         disable symver
3812         enable section_data_rel_ro
3813         SLIB_INSTALL_NAME='$(SLIBNAME)'
3814         SLIB_INSTALL_LINKS=
3815         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3816         ;;
3817     haiku)
3818         prefix_default="/boot/common"
3819         network_extralibs="-lnetwork"
3820         host_extralibs=
3821         ;;
3822     sunos)
3823         SHFLAGS='-shared -Wl,-h,$$(@F)'
3824         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3825         network_extralibs="-lsocket -lnsl"
3826         # When using suncc to build, the Solaris linker will mark
3827         # an executable with each instruction set encountered by
3828         # the Solaris assembler.  As our libraries contain their own
3829         # guards for processor-specific code, instead suppress
3830         # generation of the HWCAPS ELF section on Solaris x86 only.
3831         enabled_all suncc x86 &&
3832             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3833             add_ldflags -Wl,-M,mapfile
3834         nm_default='nm -P -g'
3835         version_script='-M'
3836         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3837         ;;
3838     netbsd)
3839         disable symver
3840         oss_indev_extralibs="-lossaudio"
3841         oss_outdev_extralibs="-lossaudio"
3842         ;;
3843     openbsd|bitrig)
3844         disable symver
3845         SHFLAGS='-shared'
3846         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3847         SLIB_INSTALL_LINKS=
3848         oss_indev_extralibs="-lossaudio"
3849         oss_outdev_extralibs="-lossaudio"
3850         ;;
3851     dragonfly)
3852         disable symver
3853         ;;
3854     freebsd)
3855         ;;
3856     bsd/os)
3857         add_extralibs -lpoll -lgnugetopt
3858         ;;
3859     darwin)
3860         enabled ppc && add_asflags -force_cpusubtype_ALL
3861         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3862         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3863         add_ldflags -Wl,-dynamic,-search_paths_first
3864         SLIBSUF=".dylib"
3865         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME).$(LIBVERSION)$(SLIBSUF)'
3866         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME).$(LIBMAJOR)$(SLIBSUF)'
3867         objformat="macho"
3868         enabled x86_64 && objformat="macho64"
3869         enabled_any pic shared ||
3870             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3871         check_header dispatch/dispatch.h &&
3872             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3873         ;;
3874     msys*)
3875         die "Native MSYS builds are discouraged, please use the MINGW environment."
3876         ;;
3877     mingw32*|mingw64*)
3878         if test $target_os = "mingw32ce"; then
3879             disable network
3880         else
3881             target_os=mingw32
3882         fi
3883         LIBTARGET=i386
3884         if enabled x86_64; then
3885             LIBTARGET="i386:x86-64"
3886         elif enabled arm; then
3887             LIBTARGET=arm-wince
3888         fi
3889         check_ldflags -Wl,--nxcompat
3890         check_ldflags -Wl,--dynamicbase
3891         shlibdir_default="$bindir_default"
3892         SLIBPREF=""
3893         SLIBSUF=".dll"
3894         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3895         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3896         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3897         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3898         SLIB_INSTALL_LINKS=
3899         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3900         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3901         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3902         objformat="win32"
3903         dlltool="${cross_prefix}dlltool"
3904         ranlib=:
3905         enable dos_paths
3906         ;;
3907     win32|win64)
3908         disable symver
3909         if enabled shared; then
3910             # Link to the import library instead of the normal static library
3911             # for shared libs.
3912             LD_LIB='%.lib'
3913             # Cannot build both shared and static libs with MSVC or icl.
3914             disable static
3915         fi
3916         shlibdir_default="$bindir_default"
3917         SLIBPREF=""
3918         SLIBSUF=".dll"
3919         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3920         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3921         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3922         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3923         SLIB_INSTALL_LINKS=
3924         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3925         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3926         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3927         objformat="win32"
3928         ranlib=:
3929         enable dos_paths
3930         ;;
3931     cygwin*)
3932         target_os=cygwin
3933         shlibdir_default="$bindir_default"
3934         SLIBPREF="cyg"
3935         SLIBSUF=".dll"
3936         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3937         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3938         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3939         SLIB_INSTALL_LINKS=
3940         SLIB_INSTALL_EXTRA_LIB='lib$(NAME).dll.a'
3941         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(NAME).dll.a'
3942         objformat="win32"
3943         enable dos_paths
3944         ;;
3945     *-dos|freedos|opendos)
3946         network_extralibs="-lsocket"
3947         objformat="coff"
3948         enable dos_paths
3949         add_cppflags -U__STRICT_ANSI__
3950         ;;
3951     linux)
3952         enable dv1394
3953         enable section_data_rel_ro
3954         ;;
3955     irix*)
3956         target_os=irix
3957         ranlib="echo ignoring ranlib"
3958         ;;
3959     os/2*)
3960         ln_s="cp -f"
3961         objformat="aout"
3962         add_cppflags -D_GNU_SOURCE
3963         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3964         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3965         LIBSUF="_s.a"
3966         SLIBPREF=""
3967         SLIBSUF=".dll"
3968         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3969         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3970         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3971             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3972             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3973             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3974             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
3975         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3976             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3977         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3978         enable dos_paths
3979         ;;
3980     gnu/kfreebsd)
3981         add_cppflags -D_BSD_SOURCE
3982         ;;
3983     gnu)
3984         ;;
3985     qnx)
3986         add_cppflags -D_QNX_SOURCE
3987         network_extralibs="-lsocket"
3988         ;;
3989     symbian)
3990         SLIBSUF=".dll"
3991         enable dos_paths
3992         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3993         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3994         add_ldflags -Wl,--target1-abs,--no-undefined \
3995                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3996                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3997         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3998                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3999                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4000         ;;
4001     osf1)
4002         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4003         ;;
4004     minix)
4005         ;;
4006     none)
4007         ;;
4008     *)
4009         die "Unknown OS '$target_os'."
4010         ;;
4011 esac
4012
4013 # determine libc flavour
4014
4015 probe_libc(){
4016     pfx=$1
4017     pfx_no_=${pfx%_}
4018     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4019     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4020         eval ${pfx}libc_type=uclibc
4021         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4022     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4023         eval ${pfx}libc_type=glibc
4024         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4025     # MinGW headers can be installed on Cygwin, so check for newlib first.
4026     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4027         eval ${pfx}libc_type=newlib
4028         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
4029     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4030     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4031         eval ${pfx}libc_type=mingw64
4032         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4033         eval test \$${pfx_no_}cc_type = "gcc" &&
4034             add_${pfx}cppflags -D__printf__=__gnu_printf__
4035     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4036          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4037         eval ${pfx}libc_type=mingw32
4038         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4039             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4040             die "ERROR: MinGW32 runtime version must be >= 3.15."
4041         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4042         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700__" &&
4043             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
4044         eval test \$${pfx_no_}cc_type = "gcc" &&
4045             add_${pfx}cppflags -D__printf__=__gnu_printf__
4046     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4047         eval ${pfx}libc_type=msvcrt
4048         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4049             if [ "$pfx" = host_ ]; then
4050                 add_host_cppflags -Dsnprintf=_snprintf
4051             else
4052                 add_compat strtod.o strtod=avpriv_strtod
4053                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4054                                              _snprintf=avpriv_snprintf  \
4055                                              vsnprintf=avpriv_vsnprintf
4056             fi
4057         fi
4058         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
4059         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4060         # 0x601 by default unless something else is set by the user.
4061         # This can easily lead to us detecting functions only present
4062         # in such new versions and producing binaries requiring windows 7.0.
4063         # Therefore explicitly set the default to XP unless the user has
4064         # set something else on the command line.
4065         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4066         # family. For these cases, configure is free to use any functions
4067         # found in the SDK headers by default. (Alternatively, we could force
4068         # _WIN32_WINNT to 0x0602 in that case.)
4069         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4070             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4071 #ifdef WINAPI_FAMILY
4072 #include <winapifamily.h>
4073 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4074 #error not desktop
4075 #endif
4076 #endif
4077 EOF
4078         if [ "$pfx" = "" ]; then
4079             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4080         fi
4081     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4082         eval ${pfx}libc_type=klibc
4083     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4084         eval ${pfx}libc_type=bionic
4085     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4086         eval ${pfx}libc_type=solaris
4087         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4088     else
4089         eval ${pfx}libc_type=default
4090         add_${pfx}cppflags -D_DEFAULT_SOURCE
4091     fi
4092 }
4093
4094 probe_libc
4095 test -n "$libc_type" && enable libc_$libc_type
4096 probe_libc host_
4097 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4098
4099 case $libc_type in
4100     bionic)
4101         add_compat strtod.o strtod=avpriv_strtod
4102         ;;
4103 esac
4104
4105 # hacks for compiler/libc/os combinations
4106
4107 if enabled_all tms470 libc_glibc; then
4108     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4109     add_cppflags -D__USER_LABEL_PREFIX__=
4110     add_cppflags -D__builtin_memset=memset
4111     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4112     add_cflags   -pds=48    # incompatible redefinition of macro
4113 fi
4114
4115 if enabled_all ccc libc_glibc; then
4116     add_ldflags -Wl,-z,now  # calls to libots crash without this
4117 fi
4118
4119 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4120     add_cppflags '-I\$(SRC_PATH)/compat/float'
4121
4122 esc(){
4123     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4124 }
4125
4126 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
4127
4128 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4129
4130 set_default $PATHS_LIST
4131 set_default nm
4132
4133 # we need to build at least one lib type
4134 if ! enabled_any static shared; then
4135     cat <<EOF
4136 At least one library type must be built.
4137 Specify --enable-static to build the static libraries or --enable-shared to
4138 build the shared libraries as well. To only build the shared libraries specify
4139 --disable-static in addition to --enable-shared.
4140 EOF
4141     exit 1
4142 fi
4143
4144 disabled optimizations || check_cflags -fomit-frame-pointer
4145
4146 enable_weak_pic() {
4147     disabled pic && return
4148     enable pic
4149     add_cppflags -DPIC
4150     case "$target_os" in
4151     mingw*|cygwin*)
4152         ;;
4153     *)
4154         add_cflags -fPIC
4155         ;;
4156     esac
4157     add_asflags  -fPIC
4158 }
4159
4160 enabled pic && enable_weak_pic
4161
4162 check_cc <<EOF || die "Symbol mangling check failed."
4163 int ff_extern;
4164 EOF
4165 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4166 extern_prefix=${sym%%ff_extern*}
4167
4168 check_cc <<EOF && enable_weak inline_asm
4169 void foo(void) { __asm__ volatile ("" ::); }
4170 EOF
4171
4172 _restrict=
4173 for restrict_keyword in restrict __restrict__ __restrict; do
4174     check_cc <<EOF && _restrict=$restrict_keyword && break
4175 void foo(char * $restrict_keyword p);
4176 EOF
4177 done
4178
4179 check_cc <<EOF && enable pragma_deprecated
4180 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4181 EOF
4182
4183 check_cc <<EOF && enable attribute_packed
4184 struct { int x; } __attribute__((packed)) x;
4185 EOF
4186
4187 check_cc <<EOF && enable attribute_may_alias
4188 union { int x; } __attribute__((may_alias)) x;
4189 EOF
4190
4191 check_cc <<EOF || die "endian test failed"
4192 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4193 EOF
4194 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4195
4196 check_gas() {
4197     log "check_gas using '$as' as AS"
4198     # :vararg is used on aarch64, arm and ppc altivec
4199     check_as <<EOF || return 1
4200 .macro m n, y:vararg=0
4201 \n: .int \y
4202 .endm
4203 m x
4204 EOF
4205     # .altmacro is only used in arm asm
4206     ! enabled arm || check_as <<EOF || return 1
4207 .altmacro
4208 EOF
4209     enable gnu_as
4210     return 0
4211 }
4212
4213 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4214     nogas=:
4215     enabled_any arm aarch64 && nogas=die
4216     enabled_all ppc altivec && nogas=warn
4217     as_noop=-v
4218
4219     case $as_type in
4220         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4221         gcc)  gaspp_as_type=gas ;;
4222         *)    gaspp_as_type=$as_type ;;
4223     esac
4224
4225     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4226
4227     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4228         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4229
4230     if ! check_gas ; then
4231         as=${gas:=$as}
4232         check_gas || \
4233             $nogas "GNU assembler not found, install/update gas-preprocessor"
4234     fi
4235
4236     check_as <<EOF && enable as_func
4237 .func test
4238 .endfunc
4239 EOF
4240 fi
4241
4242 check_inline_asm inline_asm_labels '"1:\n"'
4243
4244 if enabled aarch64; then
4245     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4246     # internal assembler in clang 3.3 does not support this instruction
4247     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4248     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4249
4250     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4251
4252 elif enabled alpha; then
4253
4254     check_cflags -mieee
4255
4256 elif enabled arm; then
4257
4258     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4259     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4260     enabled thumb && check_cflags -mthumb || check_cflags -marm
4261
4262     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4263         enable vfp_args
4264     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4265         enable vfp_args
4266     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4267         case "${cross_prefix:-$cc}" in
4268             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4269             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4270 __asm__ (".eabi_attribute 28, 1");
4271 int main(void) { return 0; }
4272 EOF
4273         esac
4274         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4275     fi
4276
4277     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4278     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4279     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4280     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4281     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4282     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4283
4284     [ $target_os = linux ] || [ $target_os = android ] ||
4285         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4286             $ARCH_EXT_LIST_ARM
4287
4288     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4289
4290     check_as <<EOF && enable as_dn_directive
4291 ra .dn d0.i16
4292 .unreq ra
4293 EOF
4294     check_as <<EOF && enable as_fpu_directive
4295 .fpu neon
4296 EOF
4297
4298     # llvm's integrated assembler supports .object_arch from llvm 3.5
4299     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4300 .object_arch armv4
4301 EOF
4302
4303     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4304
4305 elif enabled mips; then
4306
4307     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4308
4309     # make sure that only an instruction set is enabled
4310     disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4311
4312     if enabled mips64; then
4313         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4314             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4315                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4316     else
4317         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4318             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4319                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4320     fi
4321
4322 elif enabled parisc; then
4323
4324     if enabled gcc; then
4325         case $($cc -dumpversion) in
4326             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4327         esac
4328     fi
4329
4330 elif enabled ppc; then
4331
4332     enable local_aligned_8 local_aligned_16 local_aligned_32
4333
4334     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4335     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4336     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4337     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4338
4339     # AltiVec flags: The FSF version of GCC differs from the Apple version
4340     if enabled altivec; then
4341         check_cflags -maltivec -mabi=altivec &&
4342         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4343         check_cflags -faltivec
4344
4345         # check if our compiler supports Motorola AltiVec C API
4346         check_cc <<EOF || disable altivec
4347 $inc_altivec_h
4348 int main(void) {
4349     vector signed int v1 = (vector signed int) { 0 };
4350     vector signed int v2 = (vector signed int) { 1 };
4351     v1 = vec_add(v1, v2);
4352     return 0;
4353 }
4354 EOF
4355
4356         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4357     fi
4358
4359     if enabled vsx; then
4360         check_cflags -mvsx &&
4361         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4362     fi
4363
4364     if enabled power8; then
4365         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4366     fi
4367
4368 elif enabled x86; then
4369
4370     check_builtin rdtsc    intrin.h   "__rdtsc()"
4371     check_builtin mm_empty mmintrin.h "_mm_empty()"
4372
4373     enable local_aligned_8 local_aligned_16 local_aligned_32
4374
4375     # check whether EBP is available on x86
4376     # As 'i' is stored on the stack, this program will crash
4377     # if the base pointer is used to access it because the
4378     # base pointer is cleared in the inline assembly code.
4379     check_exec_crash <<EOF && enable ebp_available
4380 volatile int i=0;
4381 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4382 return i;
4383 EOF
4384
4385     # check whether EBX is available on x86
4386     check_inline_asm ebx_available '""::"b"(0)' &&
4387         check_inline_asm ebx_available '"":::"%ebx"'
4388
4389     # check whether xmm clobbers are supported
4390     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4391
4392     # check whether binutils is new enough to compile SSSE3/MMXEXT
4393     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4394     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4395
4396     if ! disabled_any asm mmx yasm; then
4397         if check_cmd $yasmexe --version; then
4398             enabled x86_64 && yasm_extra="-m amd64"
4399             yasm_debug="-g dwarf2"
4400         elif check_cmd nasm -v; then
4401             yasmexe=nasm
4402             yasm_debug="-g -F dwarf"
4403             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4404         fi
4405
4406         YASMFLAGS="-f $objformat $yasm_extra"
4407         enabled pic               && append YASMFLAGS "-DPIC"
4408         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4409         case "$objformat" in
4410             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4411         esac
4412
4413         check_yasm "movbe ecx, [5]" && enable yasm ||
4414             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4415         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4416         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4417         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4418         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4419         check_yasm "CPU amdnop" || disable cpunop
4420     fi
4421
4422     case "$cpu" in
4423         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4424             disable fast_clz
4425         ;;
4426     esac
4427
4428 fi
4429
4430 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4431
4432 check_ldflags -Wl,--as-needed
4433
4434 if check_func dlopen; then
4435     ldl=
4436 elif check_func dlopen -ldl; then
4437     ldl=-ldl
4438 fi
4439
4440 if ! disabled network; then
4441     check_func getaddrinfo $network_extralibs
4442     check_func inet_aton $network_extralibs
4443
4444     check_type netdb.h "struct addrinfo"
4445     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4446     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4447     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4448     check_type poll.h "struct pollfd"
4449     check_type netinet/sctp.h "struct sctp_event_subscribe"
4450     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4451     check_type netinet/in.h "struct sockaddr_in6"
4452     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4453     check_type "sys/types.h sys/socket.h" socklen_t
4454
4455     # Prefer arpa/inet.h over winsock2
4456     if check_header arpa/inet.h ; then
4457         check_func closesocket
4458     elif check_header winsock2.h ; then
4459         check_func_headers winsock2.h closesocket -lws2 &&
4460             network_extralibs="-lws2" ||
4461         { check_func_headers winsock2.h closesocket -lws2_32 &&
4462             network_extralibs="-lws2_32"; } || disable winsock2_h network
4463         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4464
4465         check_type ws2tcpip.h socklen_t
4466         check_type ws2tcpip.h "struct addrinfo"
4467         check_type ws2tcpip.h "struct group_source_req"
4468         check_type ws2tcpip.h "struct ip_mreq_source"
4469         check_type ws2tcpip.h "struct ipv6_mreq"
4470         check_type winsock2.h "struct pollfd"
4471         check_struct winsock2.h "struct sockaddr" sa_len
4472         check_type ws2tcpip.h "struct sockaddr_in6"
4473         check_type ws2tcpip.h "struct sockaddr_storage"
4474     else
4475         disable network
4476     fi
4477 fi
4478
4479 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4480 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4481 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4482 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4483
4484 case "$custom_allocator" in
4485     jemalloc)
4486         # jemalloc by default does not use a prefix
4487         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4488     ;;
4489     tcmalloc)
4490         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
4491         malloc_prefix=tc_
4492     ;;
4493 esac
4494
4495 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4496 check_func  ${malloc_prefix}memalign            && enable memalign
4497 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4498
4499 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4500     check_func_headers time.h clock_gettime ||
4501         { check_lib clock_gettime time.h clock_gettime -lrt && LIBRT="-lrt"; }
4502
4503 check_func  fcntl
4504 check_func  fork
4505 check_func  gethrtime
4506 check_func  getopt
4507 check_func  getrusage
4508 check_func  gettimeofday
4509 check_func  gmtime_r
4510 check_func  isatty
4511 check_func  localtime_r
4512 check_func  mach_absolute_time
4513 check_func  mkstemp
4514 check_func  mmap
4515 check_func  mprotect
4516 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4517 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
4518 check_func  sched_getaffinity
4519 check_func  setrlimit
4520 check_func  strerror_r
4521 check_func  sysconf
4522 check_func  sysctl
4523 check_func  usleep
4524
4525 check_func_headers io.h setmode
4526 check_func_headers stdlib.h getenv
4527
4528 check_func_headers windows.h GetProcessAffinityMask
4529 check_func_headers windows.h GetProcessTimes
4530 check_func_headers windows.h GetSystemTimeAsFileTime
4531 check_func_headers windows.h LoadLibrary
4532 check_func_headers windows.h MapViewOfFile
4533 check_func_headers windows.h SetConsoleTextAttribute
4534 check_func_headers windows.h Sleep
4535 check_func_headers windows.h VirtualAlloc
4536 check_struct windows.h "CONDITION_VARIABLE" Ptr
4537
4538 check_header d3d11.h
4539 check_header direct.h
4540 check_header dlfcn.h
4541 check_header dxva.h
4542 check_header dxva2api.h
4543 check_header io.h
4544 check_header mach/mach_time.h
4545 check_header malloc.h
4546 check_header poll.h
4547 check_header sys/mman.h
4548 check_header sys/param.h
4549 check_header sys/resource.h
4550 check_header sys/select.h
4551 check_header sys/time.h
4552 check_header sys/un.h
4553 check_header unistd.h
4554 check_header valgrind/valgrind.h
4555 check_header VideoDecodeAcceleration/VDADecoder.h
4556 check_header windows.h
4557 check_header X11/extensions/XvMClib.h
4558
4559 # it seems there are versions of clang in some distros that try to use the
4560 # gcc headers, which explodes for stdatomic
4561 # so we also check that atomics actually work here
4562 check_builtin stdatomic_h stdatomic.h "atomic_int foo; atomic_store(&foo, 0)"
4563
4564 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
4565 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
4566 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
4567
4568 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4569
4570 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4571 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4572 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4573
4574 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
4575 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
4576 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
4577 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
4578 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
4579 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
4580
4581 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
4582
4583 if ! disabled w32threads && ! enabled pthreads; then
4584     check_lib w32threads "windows.h process.h" _beginthreadex
4585 fi
4586
4587 # check for some common methods of building with pthread support
4588 # do this before the optional library checks as some of them require pthreads
4589 if ! disabled pthreads && ! enabled w32threads; then
4590     if check_lib pthreads pthread.h pthread_join -pthread; then
4591         add_cflags -pthread
4592     elif check_lib pthreads pthread.h pthread_join -pthreads; then
4593         add_cflags -pthreads
4594     elif check_lib pthreads pthread.h pthread_join -lpthreadGC2; then
4595         :
4596     elif check_lib pthreads pthread.h pthread_join -lpthread; then
4597         :
4598     elif check_func pthread_join; then
4599         enable pthreads
4600     fi
4601 fi
4602
4603 enabled pthreads &&
4604     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
4605
4606 disabled  zlib || check_lib  zlib  zlib.h      zlibVersion -lz
4607 disabled bzlib || check_lib bzlib bzlib.h BZ2_bzlibVersion -lbz2
4608
4609 check_lib libm math.h sin -lm && LIBM="-lm"
4610
4611 atan2f_args=2
4612 ldexpf_args=2
4613 powf_args=2
4614
4615 for func in $MATH_FUNCS; do
4616     eval check_mathfunc $func \${${func}_args:-1} $LIBM
4617 done
4618
4619 # these are off by default, so fail if requested and not available
4620 enabled avisynth          && { check_header avisynth/avisynth_c.h || die "ERROR: avisynth/avisynth_c.h header not found"; }
4621 enabled avxsynth          && require avxsynth "avxsynth/avxsynth_c.h dlfcn.h" dlopen -ldl
4622 enabled cuda              && require cuda cuda.h cuInit -lcuda
4623 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4624 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4625 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4626 enabled libdc1394         && require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new
4627 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4628 enabled libfaac           && require libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4629 enabled libfdk_aac        && require_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4630 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4631 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4632 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4633                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
4634                                done || die "ERROR: libgsm not found"; }
4635 enabled libhdcd           && require_pkg_config libhdcd "hdcd/hdcd_simple.h" hdcd_new
4636 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4637 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
4638 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
4639 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4640 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
4641 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4642 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4643 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4644 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
4645 enabled libopenjpeg       && { check_lib libopenjpeg openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4646                                require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; }
4647 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4648 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4649 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4650 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4651 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
4652 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
4653 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4654 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4655 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4656 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4657 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4658 enabled libvpx            && require_pkg_config "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version && {
4659     enabled libvpx_vp8_decoder && {
4660         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
4661             disable libvpx_vp8_decoder;
4662     }
4663     enabled libvpx_vp8_encoder && {
4664         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
4665             disable libvpx_vp8_encoder;
4666     }
4667     enabled libvpx_vp9_decoder && {
4668         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
4669             disable libvpx_vp9_decoder;
4670     }
4671     enabled libvpx_vp9_encoder && {
4672         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
4673             disable libvpx_vp9_encoder;
4674     }
4675     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
4676         die "libvpx enabled but no supported decoders found"
4677     fi
4678 }
4679 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4680 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4681 enabled libx264           && require_pkg_config x264 "stdint.h x264.h" x264_encoder_encode &&
4682                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4683                                die "ERROR: libx264 version must be >= 0.118."; } &&
4684                              { check_cpp_condition x264.h "X264_MPEG2" &&
4685                                enable libx262; }
4686 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
4687                              { check_cpp_condition x265.h "X265_BUILD >= 57" ||
4688                                die "ERROR: libx265 version must be >= 57."; }
4689 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
4690 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4691 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4692                                { ! enabled cross_compile &&
4693                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
4694                                  add_ldflags -L/opt/vc/lib/ &&
4695                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
4696                                die "ERROR: mmal not found" &&
4697                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
4698 enabled omx_rpi           && { check_header OMX_Core.h ||
4699                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
4700                                die "ERROR: OpenMAX IL headers not found"; }
4701 enabled omx               && { check_header OMX_Core.h || die "ERROR: OpenMAX IL headers not found"; }
4702 enabled openssl           && { { check_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
4703                                  check_pkg_config openssl openssl/ssl.h SSL_library_init; } && {
4704                                add_cflags $openssl_cflags && add_extralibs $openssl_extralibs; } ||
4705                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4706                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4707                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4708                                die "ERROR: openssl not found"; }
4709
4710 enabled gnutls            && check_lib gmp gmp.h mpz_export -lgmp
4711
4712 if enabled nvenc; then
4713     check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."
4714     check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6" ||
4715         die "ERROR: NVENC API version 5 or older is not supported"
4716 fi
4717
4718 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4719     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4720     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4721     enable sdl
4722 fi
4723
4724 ! disabled pod2man   && check_cmd pod2man --help     && enable pod2man   || disable pod2man
4725 ! disabled texi2html && check_cmd texi2html -version && enable texi2html || disable texi2html
4726
4727 check_header linux/fb.h
4728 check_header linux/videodev2.h
4729 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4730
4731 check_header AVFoundation/AVFoundation.h
4732
4733 check_header sys/videoio.h
4734
4735 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
4736 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
4737 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4738 # w32api 3.12 had it defined wrong
4739 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4740
4741 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4742 { check_header dev/bktr/ioctl_meteor.h &&
4743   check_header dev/bktr/ioctl_bt848.h; } ||
4744 { check_header machine/ioctl_meteor.h &&
4745   check_header machine/ioctl_bt848.h; } ||
4746 { check_header dev/video/meteor/ioctl_meteor.h &&
4747   check_header dev/video/bktr/ioctl_bt848.h; } ||
4748 check_header dev/ic/bt8xx.h
4749
4750 check_header sys/soundcard.h
4751 check_header soundcard.h
4752
4753 enabled_any alsa_indev alsa_outdev &&
4754     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
4755
4756 enabled jack_indev && check_lib jack jack/jack.h jack_client_open -ljack &&
4757     check_func jack_port_get_latency_range -ljack
4758
4759 enabled_any sndio_indev sndio_outdev && check_lib sndio sndio.h sio_open -lsndio
4760
4761 if enabled libcdio; then
4762     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4763     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4764     die "ERROR: No usable libcdio/cdparanoia found"
4765 fi
4766
4767 if enabled libxcb; then
4768     check_pkg_config xcb-shape xcb/shape.h xcb_shape_rectangles || {
4769         enabled libxcb && die "ERROR: libxcb not found";
4770     } && enable libxcb
4771
4772     disabled libxcb_shm ||
4773         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
4774             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
4775         } && check_header sys/shm.h && enable libxcb_shm
4776
4777     disabled libxcb_xfixes ||
4778         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
4779             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
4780         } && enable libxcb_xfixes
4781
4782     add_cflags "$xcb_shape_cflags $xcb_shm_cflags $xcb_xfixes_cflags"
4783     add_extralibs "$xcb_shape_extralibs $xcb_shm_extralibs $xcb_xfixes_extralibs"
4784 fi
4785
4786 enabled dxva2 &&
4787     check_lib dxva2_lib windows.h CoTaskMemFree -lole32
4788
4789 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4790
4791 enabled vaapi &&
4792     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
4793     disable vaapi
4794
4795 enabled vaapi &&
4796     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
4797
4798 enabled vaapi &&
4799     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
4800
4801 enabled vdpau &&
4802     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4803     disable vdpau
4804
4805 enabled vdpau &&
4806     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
4807
4808 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4809
4810 # add some useful compiler flags if supported
4811 check_cflags -Wdeclaration-after-statement
4812 check_cflags -Wall
4813 check_cflags -Wdisabled-optimization
4814 check_cflags -Wpointer-arith
4815 check_cflags -Wredundant-decls
4816 check_cflags -Wwrite-strings
4817 check_cflags -Wtype-limits
4818 check_cflags -Wundef
4819 check_cflags -Wmissing-prototypes
4820 check_cflags -Wstrict-prototypes
4821
4822 if enabled extra_warnings; then
4823     check_cflags -Wcast-qual
4824     check_cflags -Wextra
4825     check_cflags -Wpedantic
4826 fi
4827
4828 check_disable_warning(){
4829     warning_flag=-W${1#-Wno-}
4830     test_cflags $warning_flag && add_cflags $1
4831 }
4832
4833 check_disable_warning -Wno-parentheses
4834 check_disable_warning -Wno-switch
4835 check_disable_warning -Wno-format-zero-length
4836 check_disable_warning -Wno-pointer-sign
4837
4838 check_disable_warning_headers(){
4839     warning_flag=-W${1#-Wno-}
4840     test_cflags $warning_flag && add_cflags_headers $1
4841 }
4842
4843 check_disable_warning_headers -Wno-deprecated-declarations
4844 check_disable_warning_headers -Wno-unused-variable
4845
4846 check_objcflags -fobjc-arc && enable objc_arc
4847
4848 # add some linker flags