configure: Use correct variable name in libsnappy test
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken Libav."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --quiet                  Suppress showing informative output
67   --list-decoders          show all available decoders
68   --list-encoders          show all available encoders
69   --list-hwaccels          show all available hardware accelerators
70   --list-demuxers          show all available demuxers
71   --list-muxers            show all available muxers
72   --list-parsers           show all available parsers
73   --list-protocols         show all available protocols
74   --list-bsfs              show all available bitstream filters
75   --list-indevs            show all available input devices
76   --list-outdevs           show all available output devices
77   --list-filters           show all available filters
78
79 Standard options:
80   --logfile=FILE           log tests and output to FILE [config.log]
81   --disable-logging        do not log configure debug information
82   --prefix=PREFIX          install in PREFIX [$prefix_default]
83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
84   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
86   --libdir=DIR             install libs in DIR [PREFIX/lib]
87   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
88   --incdir=DIR             install includes in DIR [PREFIX/include]
89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
90   --enable-rpath           use rpath when linking programs (USE WITH CARE)
91
92 Licensing options:
93   --enable-gpl             allow use of GPL code, the resulting libs
94                            and binaries will be under GPL [no]
95   --enable-version3        upgrade (L)GPL to version 3 [no]
96   --enable-nonfree         allow use of nonfree code, the resulting libs
97                            and binaries will be unredistributable [no]
98
99 Configuration options:
100   --disable-static         do not build static libraries [no]
101   --enable-shared          build shared libraries [no]
102   --enable-small           optimize for size instead of speed
103   --enable-runtime-cpudetect detect CPU capabilities at runtime (bigger binary)
104   --enable-gray            enable full grayscale support (slower color)
105   --disable-swscale-alpha  disable alpha channel support in swscale
106   --disable-all            disable building components, libraries and programs
107
108 Program options:
109   --disable-programs       do not build command line programs
110   --disable-avconv         disable avconv build
111   --disable-avplay         disable avplay build
112   --disable-avprobe        disable avprobe build
113   --disable-avserver       deprecated, does nothing
114
115 Component options:
116   --disable-doc            do not build documentation
117   --disable-pod2man        do not build manual pages
118   --disable-texi2html      do not build HTML documentation
119   --disable-avdevice       disable libavdevice build
120   --disable-avcodec        disable libavcodec build
121   --disable-avformat       disable libavformat build
122   --disable-avutil         disable libavutil build
123   --disable-swscale        disable libswscale build
124   --disable-avfilter       disable video filter support [no]
125   --disable-avresample     disable libavresample build [no]
126   --disable-pthreads       disable pthreads [auto]
127   --disable-w32threads     disable Win32 threads [auto]
128   --disable-network        disable network support [no]
129   --disable-dct            disable DCT code
130   --disable-error-resilience disable error resilience code
131   --disable-lsp            disable LSP code
132   --disable-lzo            disable LZO decoder code
133   --disable-mdct           disable MDCT code
134   --disable-rdft           disable RDFT code
135   --disable-fft            disable FFT code
136   --disable-faan           disable floating point AAN (I)DCT code
137
138 Individual component options:
139   --disable-everything     disable all components listed below
140   --disable-encoder=NAME   disable encoder NAME
141   --enable-encoder=NAME    enable encoder NAME
142   --disable-encoders       disable all encoders
143   --disable-decoder=NAME   disable decoder NAME
144   --enable-decoder=NAME    enable decoder NAME
145   --disable-decoders       disable all decoders
146   --disable-hwaccel=NAME   disable hwaccel NAME
147   --enable-hwaccel=NAME    enable hwaccel NAME
148   --disable-hwaccels       disable all hwaccels
149   --disable-muxer=NAME     disable muxer NAME
150   --enable-muxer=NAME      enable muxer NAME
151   --disable-muxers         disable all muxers
152   --disable-demuxer=NAME   disable demuxer NAME
153   --enable-demuxer=NAME    enable demuxer NAME
154   --disable-demuxers       disable all demuxers
155   --enable-parser=NAME     enable parser NAME
156   --disable-parser=NAME    disable parser NAME
157   --disable-parsers        disable all parsers
158   --enable-bsf=NAME        enable bitstream filter NAME
159   --disable-bsf=NAME       disable bitstream filter NAME
160   --disable-bsfs           disable all bitstream filters
161   --enable-protocol=NAME   enable protocol NAME
162   --disable-protocol=NAME  disable protocol NAME
163   --disable-protocols      disable all protocols
164   --enable-indev=NAME      enable input device NAME
165   --disable-indev=NAME     disable input device NAME
166   --disable-indevs         disable input devices
167   --enable-outdev=NAME     enable output device NAME
168   --disable-outdev=NAME    disable output device NAME
169   --disable-outdevs        disable output devices
170   --disable-devices        disable all devices
171   --enable-filter=NAME     enable filter NAME
172   --disable-filter=NAME    disable filter NAME
173   --disable-filters        disable all filters
174
175 External library support:
176
177   Using any of the following switches will allow Libav to link to the
178   corresponding external library. All the components depending on that library
179   will become enabled, if all their other dependencies are met and they are not
180   explicitly disabled. E.g. --enable-libwavpack will enable linking to
181   libwavpack and allow the libwavpack encoder to be built, unless it is
182   specifically disabled with --disable-encoder=libwavpack.
183
184   Note that only the system libraries are auto-detected. All the other external
185   libraries must be explicitly enabled.
186
187   Also note that the following help text describes the purpose of the libraries
188   themselves, not all their features will necessarily be usable by Libav.
189
190   --enable-avisynth          video frameserver
191   --enable-bzlib             bzip2 compression [autodetect]
192   --enable-frei0r            video filtering plugins
193   --enable-gnutls            crypto
194   --enable-libbs2b           Bauer stereophonic-to-binaural DSP
195   --enable-libcdio           audio CD input
196   --enable-libdc1394         IEEE 1394/Firewire camera input
197   --enable-libdcadec         DCA audio decoding
198   --enable-libfaac           AAC audio encoding
199   --enable-libfdk-aac        AAC audio encoding/decoding
200   --enable-libfontconfig     font configuration and management
201   --enable-libfreetype       font rendering
202   --enable-libgsm            GSM audio encoding/decoding
203   --enable-libhdcd           HDCD decoding filter
204   --enable-libilbc           ILBC audio encoding/decoding
205   --enable-libkvazaar        HEVC video encoding
206   --enable-libmp3lame        MP3 audio encoding
207   --enable-libopencore-amrnb AMR-NB audio encoding/decoding
208   --enable-libopencore-amrwb AMR-WB audio decoding
209   --enable-libopencv         computer vision
210   --enable-libopenh264       H.264 video encoding/decoding
211   --enable-libopenjpeg       JPEG 2000 image encoding/decoding
212   --enable-libopus           Opus audio encoding/decoding
213   --enable-libpulse          Pulseaudio sound server
214   --enable-librtmp           RTMP streaming
215   --enable-libschroedinger   Dirac video encoding/decoding
216   --enable-libsnappy         snappy compression
217   --enable-libspeex          Speex audio encoding/decoding
218   --enable-libtheora         Theora video encoding/decoding
219   --enable-libtwolame        MP2 audio encoding
220   --enable-libvo-aacenc      AAC audio encoding
221   --enable-libvo-amrwbenc    AMR-WB audio encoding
222   --enable-libvorbis         Vorbis audio encoding/decoding
223   --enable-libvpx            VP* video encoding/decoding
224   --enable-libwavpack        Wavpack audio encoding/decoding
225   --enable-libwebp           WebP image encoding/decoding
226   --enable-libx264           H.264 video encoding
227   --enable-libx265           HEVC video encoding
228   --enable-libxavs           Chinese AVS video encoding
229   --enable-libxcb            X window system protocol communication
230   --enable-libxcb-shm        X11 shm communication [auto]
231   --enable-libxcb-xfixes     X11 mouse rendering [auto]
232   --enable-libxvid           MPEG-4 ASP video encoding
233   --enable-openssl           crypto
234   --enable-zlib              compression [autodetect]
235
236   The following libraries provide various hardware acceleration features:
237   --enable-cuda    Nvidia CUDA (dynamically linked)
238   --enable-d3d11va Microsoft Direct3D 11 video acceleration [auto]
239   --enable-dxva2   Microsoft DirectX 9 video acceleration [auto]
240   --enable-libmfx  Intel MediaSDK (AKA Quick Sync Video)
241   --enable-libnpp  Nvidia CUDA processing
242   --enable-mmal    Broadcom Multi-Media Abstraction Layer (Raspberry Pi)
243   --enable-nvenc   Nvidia video encoding
244   --enable-omx     OpenMAX IL
245   --enable-omx-rpi OpenMAX IL for Raspberry Pi
246   --enable-vaapi   Video Acceleration API (mainly Unix/Intel)
247   --enable-vda     Apple Video Decode Acceleration [auto]
248   --enable-vdpau   Nvidia Video Decode and Presentation API for Unix [auto]
249
250 Toolchain options:
251   --arch=ARCH              select architecture [$arch]
252   --cpu=CPU                select the minimum required CPU (affects
253                            instruction selection, may crash on older CPUs)
254   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
255   --enable-cross-compile   assume a cross-compiler is used
256   --sysroot=PATH           root of cross-build tree
257   --sysinclude=PATH        location of cross-build system headers
258   --target-os=OS           compiler targets OS [$target_os]
259   --target-exec=CMD        command to run executables on target
260   --target-path=DIR        path to view of build directory on target
261   --target-samples=DIR     path to samples directory on target
262   --toolchain=NAME         set tool defaults according to NAME
263   --nm=NM                  use nm tool
264   --ar=AR                  use archive tool AR [$ar_default]
265   --as=AS                  use assembler AS [$as_default]
266   --cc=CC                  use C compiler CC [$cc_default]
267   --objcc=OCC              use ObjC compiler OCC [$cc_default]
268   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
269   --ld=LD                  use linker LD
270   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
271   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
272   --host-cc=HOSTCC         use host C compiler HOSTCC
273   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
274   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
275   --host-ld=HOSTLD         use host linker HOSTLD
276   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
277   --host-libs=HLIBS        use libs HLIBS when linking for host
278   --host-os=OS             compiler host OS [$target_os]
279   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
280   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
281   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
282   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
283   --extra-libs=ELIBS       add ELIBS [$ELIBS]
284   --extra-version=STRING   version string suffix []
285   --optflags=OPTFLAGS      override optimization-related compiler flags
286   --build-suffix=SUFFIX    library name suffix []
287   --enable-pic             build position-independent code
288   --enable-thumb           compile for Thumb instruction set
289   --enable-lto             use link-time optimization
290   --env="ENV=override"     override the environment variables
291
292 Advanced options (experts only):
293   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
294   --custom-allocator=NAME  use a supported custom allocator
295   --disable-symver         disable symbol versioning
296   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
297   --disable-safe-bitstream-reader
298                            disable buffer boundary checking in bitreaders
299                            (faster, but may crash)
300   --enable-sram            allow use of on-chip SRAM
301
302 Optimization options (experts only):
303   --disable-asm            disable all assembly optimizations
304   --disable-altivec        disable AltiVec optimizations
305   --disable-vsx            disable VSX optimizations
306   --disable-power8         disable POWER8 optimizations
307   --disable-amd3dnow       disable 3DNow! optimizations
308   --disable-amd3dnowext    disable 3DNow! extended optimizations
309   --disable-mmx            disable MMX optimizations
310   --disable-mmxext         disable MMXEXT optimizations
311   --disable-sse            disable SSE optimizations
312   --disable-sse2           disable SSE2 optimizations
313   --disable-sse3           disable SSE3 optimizations
314   --disable-ssse3          disable SSSE3 optimizations
315   --disable-sse4           disable SSE4 optimizations
316   --disable-sse42          disable SSE4.2 optimizations
317   --disable-avx            disable AVX optimizations
318   --disable-xop            disable XOP optimizations
319   --disable-fma3           disable FMA3 optimizations
320   --disable-fma4           disable FMA4 optimizations
321   --disable-avx2           disable AVX2 optimizations
322   --disable-armv5te        disable armv5te optimizations
323   --disable-armv6          disable armv6 optimizations
324   --disable-armv6t2        disable armv6t2 optimizations
325   --disable-vfp            disable VFP optimizations
326   --disable-neon           disable NEON optimizations
327   --disable-inline-asm     disable use of inline assembly
328   --disable-yasm           disable use of nasm/yasm assembly
329
330 Developer options (useful when working on Libav itself):
331   --disable-debug          disable debugging symbols
332   --enable-debug=LEVEL     set the debug level [$debuglevel]
333   --disable-optimizations  disable compiler optimizations
334   --enable-extra-warnings  enable more compiler warnings
335   --samples=PATH           location of test samples for FATE, if not set use
336                            \$LIBAV_SAMPLES at make invocation time.
337   --enable-neon-clobber-test check NEON registers for clobbering (should be
338                            used only for debugging purposes)
339   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
340                            should be used only for debugging purposes)
341   --enable-random          randomly enable/disable components
342   --disable-random
343   --enable-random=LIST     randomly enable/disable specific components or
344   --disable-random=LIST    component groups. LIST is a comma-separated list
345                            of NAME[:PROB] entries where NAME is a component
346                            (group) and PROB the probability associated with
347                            NAME (default 0.5).
348   --random-seed=VALUE      seed value for --enable/disable-random
349   --disable-valgrind-backtrace do not print a backtrace under Valgrind
350                            (only applies to --disable-optimizations builds)
351
352 NOTE: Object files are built at the place where configure is launched.
353 EOF
354   exit 0
355 }
356
357 quotes='""'
358
359 log(){
360     echo "$@" >> $logfile
361 }
362
363 log_file(){
364     log BEGIN $1
365     i=1
366     while read line; do
367         printf '%5s   %s\n' "${i}" "${line}"
368         i=$(($i+1))
369     done < $1 >> $logfile
370     log END $1
371 }
372
373 echolog(){
374     log "$@"
375     echo "$@"
376 }
377
378 warn(){
379     log "WARNING: $*"
380     WARNINGS="${WARNINGS}WARNING: $*\n"
381 }
382
383 die(){
384     echolog "$@"
385     cat <<EOF
386
387 If you think configure made a mistake, make sure you are using the latest
388 version from Git.  If the latest version fails, report the problem to the
389 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
390 EOF
391     if disabled logging; then
392         cat <<EOF
393 Rerun configure with logging enabled (do not use --disable-logging), and
394 include the log this produces with your report.
395 EOF
396     else
397         cat <<EOF
398 Include the log file "$logfile" produced by configure as this will help
399 solving the problem.
400 EOF
401     fi
402     exit 1
403 }
404
405 # Avoid locale weirdness, besides we really just want to translate ASCII.
406 toupper(){
407     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
408 }
409
410 tolower(){
411     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
412 }
413
414 c_escape(){
415     echo "$*" | sed 's/["\\]/\\\0/g'
416 }
417
418 sh_quote(){
419     v=$(echo "$1" | sed "s/'/'\\\\''/g")
420     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
421     echo "$v"
422 }
423
424 cleanws(){
425     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
426 }
427
428 filter(){
429     pat=$1
430     shift
431     for v; do
432         eval "case $v in $pat) echo $v ;; esac"
433     done
434 }
435
436 filter_out(){
437     pat=$1
438     shift
439     for v; do
440         eval "case $v in $pat) ;; *) echo $v ;; esac"
441     done
442 }
443
444 map(){
445     m=$1
446     shift
447     for v; do eval $m; done
448 }
449
450 add_suffix(){
451     suffix=$1
452     shift
453     for v; do echo ${v}${suffix}; done
454 }
455
456 set_all(){
457     value=$1
458     shift
459     for var in $*; do
460         eval $var=$value
461     done
462 }
463
464 set_weak(){
465     value=$1
466     shift
467     for var; do
468         eval : \${$var:=$value}
469     done
470 }
471
472 sanitize_var_name(){
473     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
474 }
475
476 set_safe(){
477     var=$1
478     shift
479     eval $(sanitize_var_name "$var")='$*'
480 }
481
482 get_safe(){
483     eval echo \$$(sanitize_var_name "$1")
484 }
485
486 pushvar(){
487     for pvar in $*; do
488         eval level=\${${pvar}_level:=0}
489         eval ${pvar}_${level}="\$$pvar"
490         eval ${pvar}_level=$(($level+1))
491     done
492 }
493
494 popvar(){
495     for pvar in $*; do
496         eval level=\${${pvar}_level:-0}
497         test $level = 0 && continue
498         eval level=$(($level-1))
499         eval $pvar="\${${pvar}_${level}}"
500         eval ${pvar}_level=$level
501         eval unset ${pvar}_${level}
502     done
503 }
504
505 enable(){
506     set_all yes $*
507 }
508
509 disable(){
510     set_all no $*
511 }
512
513 enable_weak(){
514     set_weak yes $*
515 }
516
517 disable_weak(){
518     set_weak no $*
519 }
520
521 enable_safe(){
522     for var; do
523         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
524     done
525 }
526
527 disable_safe(){
528     for var; do
529         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
530     done
531 }
532
533 do_enable_deep(){
534     for var; do
535         enabled $var && continue
536         eval sel="\$${var}_select"
537         eval sgs="\$${var}_suggest"
538         pushvar var sgs
539         enable_deep $sel
540         popvar sgs
541         enable_deep_weak $sgs
542         popvar var
543     done
544 }
545
546 enable_deep(){
547     do_enable_deep $*
548     enable $*
549 }
550
551 enable_deep_weak(){
552     for var; do
553         disabled $var && continue
554         pushvar var
555         do_enable_deep $var
556         popvar var
557         enable_weak $var
558     done
559 }
560
561 enabled(){
562     test "${1#!}" = "$1" && op== || op=!=
563     eval test "x\$${1#!}" $op "xyes"
564 }
565
566 disabled(){
567     test "${1#!}" = "$1" && op== || op=!=
568     eval test "x\$${1#!}" $op "xno"
569 }
570
571 enabled_all(){
572     for opt; do
573         enabled $opt || return 1
574     done
575 }
576
577 disabled_all(){
578     for opt; do
579         disabled $opt || return 1
580     done
581 }
582
583 enabled_any(){
584     for opt; do
585         enabled $opt && return 0
586     done
587 }
588
589 disabled_any(){
590     for opt; do
591         disabled $opt && return 0
592     done
593     return 1
594 }
595
596 set_default(){
597     for opt; do
598         eval : \${$opt:=\$${opt}_default}
599     done
600 }
601
602 is_in(){
603     value=$1
604     shift
605     for var in $*; do
606         [ $var = $value ] && return 0
607     done
608     return 1
609 }
610
611 do_check_deps(){
612     for cfg; do
613         cfg="${cfg#!}"
614         enabled ${cfg}_checking && die "Circular dependency for $cfg."
615         disabled ${cfg}_checking && continue
616         enable ${cfg}_checking
617         append allopts $cfg
618
619         eval dep_all="\$${cfg}_deps"
620         eval dep_any="\$${cfg}_deps_any"
621         eval dep_sel="\$${cfg}_select"
622         eval dep_sgs="\$${cfg}_suggest"
623         eval dep_ifa="\$${cfg}_if"
624         eval dep_ifn="\$${cfg}_if_any"
625
626         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
627         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
628         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
629
630         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
631         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
632         enabled_all  $dep_all || disable $cfg
633         enabled_any  $dep_any || disable $cfg
634         disabled_any $dep_sel && disable $cfg
635
636         if enabled $cfg; then
637             enable_deep $dep_sel
638             enable_deep_weak $dep_sgs
639         fi
640
641         disable ${cfg}_checking
642     done
643 }
644
645 check_deps(){
646     unset allopts
647
648     do_check_deps "$@"
649
650     for cfg in $allopts; do
651         enabled $cfg || continue
652         eval dep_extralibs="\$${cfg}_extralibs"
653         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
654     done
655 }
656
657 print_config(){
658     pfx=$1
659     files=$2
660     shift 2
661     map 'eval echo "$v \${$v:-no}"' "$@" |
662     awk "BEGIN { split(\"$files\", files) }
663         {
664             c = \"$pfx\" toupper(\$1);
665             v = \$2;
666             sub(/yes/, 1, v);
667             sub(/no/,  0, v);
668             for (f in files) {
669                 file = files[f];
670                 if (file ~ /\\.h\$/) {
671                     printf(\"#define %s %d\\n\", c, v) >>file;
672                 } else if (file ~ /\\.asm\$/) {
673                     printf(\"%%define %s %d\\n\", c, v) >>file;
674                 } else if (file ~ /\\.mak\$/) {
675                     n = -v ? \"\" : \"!\";
676                     printf(\"%s%s=yes\\n\", n, c) >>file;
677                 }
678             }
679         }"
680 }
681
682 print_enabled(){
683     suf=$1
684     shift
685     for v; do
686         enabled $v && printf "%s\n" ${v%$suf}
687     done
688 }
689
690 append(){
691     var=$1
692     shift
693     eval "$var=\"\$$var $*\""
694 }
695
696 prepend(){
697     var=$1
698     shift
699     eval "$var=\"$* \$$var\""
700 }
701
702 unique(){
703     var=$1
704     uniq_list=""
705     for tok in $(eval echo \$$var); do
706         uniq_list="$(filter_out $tok $uniq_list) $tok"
707     done
708     eval "$var=\"${uniq_list}\""
709 }
710
711 add_cppflags(){
712     append CPPFLAGS "$@"
713 }
714
715 add_cflags(){
716     append CFLAGS $($cflags_filter "$@")
717 }
718
719 add_asflags(){
720     append ASFLAGS $($asflags_filter "$@")
721 }
722
723 add_objcflags(){
724     append OBJCFLAGS $($objcflags_filter "$@")
725 }
726
727 add_ldflags(){
728     append LDFLAGS $($ldflags_filter "$@")
729 }
730
731 add_ldexeflags(){
732     append LDEXEFLAGS $($ldflags_filter "$@")
733 }
734
735 add_stripflags(){
736     append STRIPFLAGS "$@"
737 }
738
739 add_extralibs(){
740     prepend extralibs $($ldflags_filter "$@")
741 }
742
743 add_host_cppflags(){
744     append host_cppflags "$@"
745 }
746
747 add_host_cflags(){
748     append host_cflags $($host_cflags_filter "$@")
749 }
750
751 add_host_ldflags(){
752     append host_ldflags $($host_ldflags_filter "$@")
753 }
754
755 add_compat(){
756     append compat_objs $1
757     shift
758     map 'add_cppflags -D$v' "$@"
759 }
760
761 check_cmd(){
762     log "$@"
763     "$@" >> $logfile 2>&1
764 }
765
766 cc_o(){
767     eval printf '%s\\n' $CC_O
768 }
769
770 cc_e(){
771     eval printf '%s\\n' $CC_E
772 }
773
774 check_cc(){
775     log check_cc "$@"
776     cat > $TMPC
777     log_file $TMPC
778     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
779 }
780
781 check_objcc(){
782     log check_objcc "$@"
783     cat > $TMPC
784     log_file $TMPC
785     check_cmd $objcc $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPC
786 }
787
788 check_cpp(){
789     log check_cpp "$@"
790     cat > $TMPC
791     log_file $TMPC
792     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
793 }
794
795 as_o(){
796     eval printf '%s\\n' $AS_O
797 }
798
799 check_as(){
800     log check_as "$@"
801     cat > $TMPS
802     log_file $TMPS
803     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
804 }
805
806 check_inline_asm(){
807     log check_inline_asm "$@"
808     name="$1"
809     code="$2"
810     shift 2
811     disable $name
812     check_cc "$@" <<EOF && enable $name
813 void foo(void){ __asm__ volatile($code); }
814 EOF
815 }
816
817 check_insn(){
818     log check_insn "$@"
819     check_inline_asm ${1}_inline "\"$2\""
820     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
821 }
822
823 check_yasm(){
824     log check_yasm "$@"
825     echo "$1" > $TMPS
826     log_file $TMPS
827     shift 1
828     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
829 }
830
831 ld_o(){
832     eval printf '%s\\n' $LD_O
833 }
834
835 check_ld(){
836     log check_ld "$@"
837     flags=$(filter_out '-l*' "$@")
838     libs=$(filter '-l*' "$@")
839     check_cc $($cflags_filter $flags) || return
840     flags=$($ldflags_filter $flags)
841     libs=$($ldflags_filter $libs)
842     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
843 }
844
845 print_include(){
846     hdr=$1
847     test "${hdr%.h}" = "${hdr}" &&
848         echo "#include $hdr"    ||
849         echo "#include <$hdr>"
850 }
851
852 check_code(){
853     log check_code "$@"
854     check=$1
855     headers=$2
856     code=$3
857     shift 3
858     {
859         for hdr in $headers; do
860             print_include $hdr
861         done
862         echo "int main(void) { $code; return 0; }"
863     } | check_$check "$@"
864 }
865
866 check_cppflags(){
867     log check_cppflags "$@"
868     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
869 int x;
870 EOF
871 }
872
873 test_cflags(){
874     log test_cflags "$@"
875     set -- $($cflags_filter "$@")
876     check_cc "$@" <<EOF
877 int x;
878 EOF
879 }
880
881 check_cflags(){
882     log check_cflags "$@"
883     test_cflags "$@" && add_cflags "$@"
884 }
885
886 test_objcflags(){
887     log test_objcflags "$@"
888     set -- $($objcflags_filter "$@")
889     check_objcc "$@" <<EOF
890 int x;
891 EOF
892 }
893
894 check_objcflags(){
895     log check_objcflags "$@"
896     test_objcflags "$@" && add_objcflags "$@"
897 }
898
899 test_ldflags(){
900     log test_ldflags "$@"
901     check_ld "$@" <<EOF
902 int main(void){ return 0; }
903 EOF
904 }
905
906 check_ldflags(){
907     log check_ldflags "$@"
908     test_ldflags "$@" && add_ldflags "$@"
909 }
910
911 test_stripflags(){
912     log test_stripflags "$@"
913     # call check_cc to get a fresh TMPO
914     check_cc <<EOF
915 int main(void) { return 0; }
916 EOF
917     check_cmd $strip $STRIPFLAGS "$@" $TMPO
918 }
919
920 check_stripflags(){
921     log check_stripflags "$@"
922     test_stripflags "$@" && add_stripflags "$@"
923 }
924
925 check_header(){
926     log check_header "$@"
927     header=$1
928     shift
929     disable_safe $header
930     check_cpp "$@" <<EOF && enable_safe $header
931 #include <$header>
932 int x;
933 EOF
934 }
935
936 check_func(){
937     log check_func "$@"
938     func=$1
939     shift
940     disable $func
941     check_ld "$@" <<EOF && enable $func
942 extern int $func();
943 int main(void){ $func(); }
944 EOF
945 }
946
947 check_mathfunc(){
948     log check_mathfunc "$@"
949     func=$1
950     narg=$2
951     shift 2
952     test $narg = 2 && args="f, g" || args="f"
953     disable $func
954     check_ld "$@" <<EOF && enable $func
955 #include <math.h>
956 float foo(float f, float g) { return $func($args); }
957 int main(void){ return 0; }
958 EOF
959 }
960
961 check_func_headers(){
962     log check_func_headers "$@"
963     headers=$1
964     funcs=$2
965     shift 2
966     {
967         for hdr in $headers; do
968             print_include $hdr
969         done
970         for func in $funcs; do
971             echo "long check_$func(void) { return (long) $func; }"
972         done
973         echo "int main(void) { return 0; }"
974     } | check_ld "$@" && enable $funcs && enable_safe $headers
975 }
976
977 check_cpp_condition(){
978     log check_cpp_condition "$@"
979     header=$1
980     condition=$2
981     shift 2
982     check_cpp "$@" <<EOF
983 #include <$header>
984 #if !($condition)
985 #error "unsatisfied condition: $condition"
986 #endif
987 EOF
988 }
989
990 test_cflags_cpp(){
991     log test_cflags_cpp "$@"
992     flags=$1
993     condition=$2
994     shift 2
995     set -- $($cflags_filter "$flags")
996     check_cpp "$@" <<EOF
997 #if !($condition)
998 #error "unsatisfied condition: $condition"
999 #endif
1000 EOF
1001 }
1002
1003 check_lib(){
1004     log check_lib "$@"
1005     headers="$1"
1006     funcs="$2"
1007     shift 2
1008     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1009 }
1010
1011 check_pkg_config(){
1012     log check_pkg_config "$@"
1013     pkg="$1"
1014     headers="$2"
1015     funcs="$3"
1016     shift 3
1017     check_cmd $pkg_config --exists --print-errors $pkg || return
1018     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1019     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1020     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1021         set_safe "${pkg}_cflags" $pkg_cflags   &&
1022         set_safe "${pkg}_libs"   $pkg_libs
1023 }
1024
1025 check_exec(){
1026     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1027 }
1028
1029 check_exec_crash(){
1030     log check_exec_crash "$@"
1031     code=$(cat)
1032
1033     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1034     # are safe but may not be available everywhere.  Thus we use
1035     # raise(SIGTERM) instead.  The check is run in a subshell so we
1036     # can redirect the "Terminated" message from the shell.  SIGBUS
1037     # is not defined by standard C so it is used conditionally.
1038
1039     (check_exec "$@") >> $logfile 2>&1 <<EOF
1040 #include <signal.h>
1041 static void sighandler(int sig){
1042     raise(SIGTERM);
1043 }
1044 int foo(void){
1045     $code
1046 }
1047 int (*func_ptr)(void) = foo;
1048 int main(void){
1049     signal(SIGILL, sighandler);
1050     signal(SIGFPE, sighandler);
1051     signal(SIGSEGV, sighandler);
1052 #ifdef SIGBUS
1053     signal(SIGBUS, sighandler);
1054 #endif
1055     return func_ptr();
1056 }
1057 EOF
1058 }
1059
1060 check_type(){
1061     log check_type "$@"
1062     headers=$1
1063     type=$2
1064     shift 2
1065     disable_safe "$type"
1066     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1067 }
1068
1069 check_struct(){
1070     log check_struct "$@"
1071     headers=$1
1072     struct=$2
1073     member=$3
1074     shift 3
1075     disable_safe "${struct}_${member}"
1076     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1077         enable_safe "${struct}_${member}"
1078 }
1079
1080 check_builtin(){
1081     log check_builtin "$@"
1082     name=$1
1083     headers=$2
1084     builtin=$3
1085     shift 3
1086     disable "$name"
1087     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1088 }
1089
1090 check_compile_assert(){
1091     log check_compile_assert "$@"
1092     name=$1
1093     headers=$2
1094     condition=$3
1095     shift 3
1096     disable "$name"
1097     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1098 }
1099
1100 require(){
1101     log require "$@"
1102     name="$1"
1103     headers="$2"
1104     func="$3"
1105     shift 3
1106     check_lib "$headers" $func "$@" || die "ERROR: $name not found"
1107 }
1108
1109 require_pkg_config(){
1110     log require_pkg_config "$@"
1111     pkg="$1"
1112     check_pkg_config "$@" || die "ERROR: $pkg not found"
1113     add_cflags    $(get_safe "${pkg}_cflags")
1114     add_extralibs $(get_safe "${pkg}_libs")
1115 }
1116
1117 hostcc_e(){
1118     eval printf '%s\\n' $HOSTCC_E
1119 }
1120
1121 hostcc_o(){
1122     eval printf '%s\\n' $HOSTCC_O
1123 }
1124
1125 check_host_cc(){
1126     log check_host_cc "$@"
1127     cat > $TMPC
1128     log_file $TMPC
1129     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1130 }
1131
1132 check_host_cpp(){
1133     log check_host_cpp "$@"
1134     cat > $TMPC
1135     log_file $TMPC
1136     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1137 }
1138
1139 check_host_cppflags(){
1140     log check_host_cppflags "$@"
1141     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1142 int x;
1143 EOF
1144 }
1145
1146 check_host_cflags(){
1147     log check_host_cflags "$@"
1148     set -- $($host_cflags_filter "$@")
1149     check_host_cc "$@" <<EOF && append host_cflags "$@"
1150 int x;
1151 EOF
1152 }
1153
1154 check_host_cpp_condition(){
1155     log check_host_cpp_condition "$@"
1156     header=$1
1157     condition=$2
1158     shift 2
1159     check_host_cpp "$@" <<EOF
1160 #include <$header>
1161 #if !($condition)
1162 #error "unsatisfied condition: $condition"
1163 #endif
1164 EOF
1165 }
1166
1167 apply(){
1168     file=$1
1169     shift
1170     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1171 }
1172
1173 cp_if_changed(){
1174     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1175     mkdir -p "$(dirname $2)"
1176     $cp_f "$1" "$2"
1177 }
1178
1179 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1180 # system-dependent things.
1181
1182 AVCODEC_COMPONENTS="
1183     bsfs
1184     decoders
1185     encoders
1186     hwaccels
1187     parsers
1188 "
1189
1190 AVDEVICE_COMPONENTS="
1191     indevs
1192     outdevs
1193 "
1194 AVFILTER_COMPONENTS="
1195     filters
1196 "
1197 AVFORMAT_COMPONENTS="
1198     demuxers
1199     muxers
1200     protocols
1201 "
1202
1203 AVRESAMPLE_COMPONENTS=""
1204 AVUTIL_COMPONENTS=""
1205
1206 COMPONENT_LIST="
1207     $AVCODEC_COMPONENTS
1208     $AVDEVICE_COMPONENTS
1209     $AVFILTER_COMPONENTS
1210     $AVFORMAT_COMPONENTS
1211     $AVRESAMPLE_COMPONENTS
1212     $AVUTIL_COMPONENTS
1213 "
1214
1215 EXAMPLE_LIST="
1216     decode_audio_example
1217     decode_video_example
1218     encode_audio_example
1219     encode_video_example
1220     filter_audio_example
1221     metadata_example
1222     output_example
1223     qsvdec_example
1224     transcode_aac_example
1225 "
1226
1227 HWACCEL_LIBRARY_NONFREE_LIST="
1228     cuda
1229     libnpp
1230 "
1231 HWACCEL_LIBRARY_LIST="
1232     $HWACCEL_LIBRARY_NONFREE_LIST
1233     d3d11va
1234     dxva2
1235     libmfx
1236     mmal
1237     nvenc
1238     omx
1239     vaapi
1240     vda
1241     vdpau
1242 "
1243
1244 EXTERNAL_LIBRARY_GPL_LIST="
1245     libcdio
1246     libx264
1247     libx265
1248     libxavs
1249     libxvid
1250 "
1251
1252 EXTERNAL_LIBRARY_NONFREE_LIST="
1253     libfaac
1254     libfdk_aac
1255     openssl
1256 "
1257
1258 EXTERNAL_LIBRARY_VERSION3_LIST="
1259     libopencore_amrnb
1260     libopencore_amrwb
1261     libvo_aacenc
1262     libvo_amrwbenc
1263 "
1264
1265 EXTERNAL_LIBRARY_LIST="
1266     $EXTERNAL_LIBRARY_GPL_LIST
1267     $EXTERNAL_LIBRARY_NONFREE_LIST
1268     $EXTERNAL_LIBRARY_VERSION3_LIST
1269     avisynth
1270     bzlib
1271     frei0r
1272     gnutls
1273     libbs2b
1274     libdc1394
1275     libdcadec
1276     libfontconfig
1277     libfreetype
1278     libgsm
1279     libhdcd
1280     libilbc
1281     libkvazaar
1282     libmp3lame
1283     libopencv
1284     libopenh264
1285     libopenjpeg
1286     libopus
1287     libpulse
1288     librtmp
1289     libschroedinger
1290     libsnappy
1291     libspeex
1292     libtheora
1293     libtwolame
1294     libvorbis
1295     libvpx
1296     libwavpack
1297     libwebp
1298     libxcb
1299     libxcb_shm
1300     libxcb_xfixes
1301     zlib
1302 "
1303
1304 FEATURE_LIST="
1305     gray
1306     hardcoded_tables
1307     omx_rpi
1308     runtime_cpudetect
1309     safe_bitstream_reader
1310     shared
1311     small
1312     sram
1313     static
1314     swscale_alpha
1315 "
1316
1317 LIBRARY_LIST="
1318     avcodec
1319     avdevice
1320     avfilter
1321     avformat
1322     avresample
1323     avutil
1324     swscale
1325 "
1326
1327 LICENSE_LIST="
1328     gpl
1329     nonfree
1330     version3
1331 "
1332
1333 PROGRAM_LIST="
1334     avconv
1335     avplay
1336     avprobe
1337 "
1338
1339 SUBSYSTEM_LIST="
1340     dct
1341     doc
1342     error_resilience
1343     faan
1344     fft
1345     lsp
1346     lzo
1347     mdct
1348     network
1349     rdft
1350 "
1351
1352 CONFIG_LIST="
1353     $COMPONENT_LIST
1354     $EXAMPLE_LIST
1355     $EXTERNAL_LIBRARY_LIST
1356     $HWACCEL_LIBRARY_LIST
1357     $FEATURE_LIST
1358     $LICENSE_LIST
1359     $LIBRARY_LIST
1360     $PROGRAM_LIST
1361     $SUBSYSTEM_LIST
1362     neon_clobber_test
1363     pic
1364     pod2man
1365     texi2html
1366     thumb
1367     valgrind_backtrace
1368     xmm_clobber_test
1369 "
1370
1371 THREADS_LIST="
1372     pthreads
1373     w32threads
1374 "
1375
1376 ATOMICS_LIST="
1377     atomics_gcc
1378     atomics_suncc
1379     atomics_win32
1380 "
1381
1382 ARCH_LIST="
1383     aarch64
1384     alpha
1385     arm
1386     avr32
1387     avr32_ap
1388     avr32_uc
1389     bfin
1390     ia64
1391     m68k
1392     mips
1393     mips64
1394     parisc
1395     ppc
1396     ppc64
1397     s390
1398     sh4
1399     sparc
1400     sparc64
1401     tilegx
1402     tilepro
1403     tomi
1404     x86
1405     x86_32
1406     x86_64
1407 "
1408
1409 ARCH_EXT_LIST_ARM="
1410     armv5te
1411     armv6
1412     armv6t2
1413     armv8
1414     neon
1415     vfp
1416     vfpv3
1417 "
1418
1419 ARCH_EXT_LIST_X86_SIMD="
1420     amd3dnow
1421     amd3dnowext
1422     avx
1423     avx2
1424     fma3
1425     fma4
1426     mmx
1427     mmxext
1428     sse
1429     sse2
1430     sse3
1431     sse4
1432     sse42
1433     ssse3
1434     xop
1435 "
1436
1437 ARCH_EXT_LIST_PPC="
1438     altivec
1439     dcbzl
1440     ldbrx
1441     power8
1442     ppc4xx
1443     vsx
1444 "
1445
1446 ARCH_EXT_LIST_X86="
1447     $ARCH_EXT_LIST_X86_SIMD
1448     cpunop
1449     i686
1450 "
1451
1452 ARCH_EXT_LIST_MIPS="
1453     loongson
1454     mips32r1
1455     mips64r1
1456     mips32r2
1457     mips64r2
1458     mips32r6
1459     mips64r6
1460 "
1461
1462 ARCH_EXT_LIST="
1463     $ARCH_EXT_LIST_ARM
1464     $ARCH_EXT_LIST_MIPS
1465     $ARCH_EXT_LIST_PPC
1466     $ARCH_EXT_LIST_X86
1467     vis
1468 "
1469
1470 ARCH_FEATURES="
1471     aligned_stack
1472     fast_64bit
1473     fast_clz
1474     fast_cmov
1475     local_aligned_8
1476     local_aligned_16
1477     local_aligned_32
1478     simd_align_16
1479     simd_align_32
1480 "
1481
1482 BUILTIN_LIST="
1483     atomic_cas_ptr
1484     machine_rw_barrier
1485     MemoryBarrier
1486     mm_empty
1487     rdtsc
1488     sem_timedwait
1489     sync_val_compare_and_swap
1490 "
1491 HAVE_LIST_CMDLINE="
1492     inline_asm
1493     symver
1494     yasm
1495 "
1496
1497 HAVE_LIST_PUB="
1498     bigendian
1499     fast_unaligned
1500 "
1501
1502 HEADERS_LIST="
1503     AVFoundation_AVFoundation_h
1504     alsa_asoundlib_h
1505     altivec_h
1506     arpa_inet_h
1507     cdio_paranoia_h
1508     cdio_paranoia_paranoia_h
1509     dispatch_dispatch_h
1510     dev_bktr_ioctl_bt848_h
1511     dev_bktr_ioctl_meteor_h
1512     dev_ic_bt8xx_h
1513     dev_video_bktr_ioctl_bt848_h
1514     dev_video_meteor_ioctl_meteor_h
1515     direct_h
1516     dlfcn_h
1517     d3d11_h
1518     dxva_h
1519     gsm_h
1520     io_h
1521     mach_mach_time_h
1522     machine_ioctl_bt848_h
1523     machine_ioctl_meteor_h
1524     malloc_h
1525     poll_h
1526     sndio_h
1527     soundcard_h
1528     stdatomic_h
1529     sys_mman_h
1530     sys_param_h
1531     sys_resource_h
1532     sys_select_h
1533     sys_soundcard_h
1534     sys_time_h
1535     sys_un_h
1536     sys_videoio_h
1537     unistd_h
1538     valgrind_valgrind_h
1539     windows_h
1540     winsock2_h
1541 "
1542
1543 INTRINSICS_LIST="
1544     intrinsics_neon
1545 "
1546
1547 MATH_FUNCS="
1548     atanf
1549     atan2f
1550     cbrtf
1551     cosf
1552     exp2
1553     exp2f
1554     expf
1555     isinf
1556     isnan
1557     ldexpf
1558     llrint
1559     llrintf
1560     log2
1561     log2f
1562     log10f
1563     lrint
1564     lrintf
1565     powf
1566     rint
1567     round
1568     roundf
1569     sinf
1570     trunc
1571     truncf
1572 "
1573
1574 SYSTEM_FUNCS="
1575     aligned_malloc
1576     clock_gettime
1577     closesocket
1578     CommandLineToArgvW
1579     CoTaskMemFree
1580     CryptGenRandom
1581     dlopen
1582     fcntl
1583     flt_lim
1584     fork
1585     getaddrinfo
1586     gethrtime
1587     getopt
1588     GetProcessAffinityMask
1589     GetProcessMemoryInfo
1590     GetProcessTimes
1591     getrusage
1592     GetSystemTimeAsFileTime
1593     gettimeofday
1594     gmtime_r
1595     inet_aton
1596     isatty
1597     jack_port_get_latency_range
1598     LoadLibrary
1599     localtime_r
1600     mach_absolute_time
1601     MapViewOfFile
1602     memalign
1603     mkstemp
1604     mmap
1605     mprotect
1606     nanosleep
1607     posix_memalign
1608     sched_getaffinity
1609     SetConsoleTextAttribute
1610     setmode
1611     setrlimit
1612     Sleep
1613     strerror_r
1614     sysconf
1615     sysctl
1616     usleep
1617     VirtualAlloc
1618 "
1619
1620 TOOLCHAIN_FEATURES="
1621     as_dn_directive
1622     as_fpu_directive
1623     as_func
1624     as_object_arch
1625     asm_mod_q
1626     attribute_may_alias
1627     attribute_packed
1628     ebp_available
1629     ebx_available
1630     gnu_as
1631     ibm_asm
1632     inline_asm_labels
1633     pragma_deprecated
1634     symver_asm_label
1635     symver_gnu_asm
1636     vfp_args
1637     xform_asm
1638     xmm_clobbers
1639 "
1640
1641 TYPES_LIST="
1642     CONDITION_VARIABLE_Ptr
1643     socklen_t
1644     struct_addrinfo
1645     struct_group_source_req
1646     struct_ip_mreq_source
1647     struct_ipv6_mreq
1648     struct_pollfd
1649     struct_rusage_ru_maxrss
1650     struct_sockaddr_in6
1651     struct_sockaddr_sa_len
1652     struct_sockaddr_storage
1653     struct_v4l2_frmivalenum_discrete
1654 "
1655
1656 HAVE_LIST="
1657     $ARCH_EXT_LIST
1658     $(add_suffix _external $ARCH_EXT_LIST)
1659     $(add_suffix _inline   $ARCH_EXT_LIST)
1660     $ARCH_FEATURES
1661     $BUILTIN_LIST
1662     $HAVE_LIST_CMDLINE
1663     $HAVE_LIST_PUB
1664     $HEADERS_LIST
1665     $INTRINSICS_LIST
1666     $MATH_FUNCS
1667     $SYSTEM_FUNCS
1668     $THREADS_LIST
1669     $TOOLCHAIN_FEATURES
1670     $TYPES_LIST
1671     dos_paths
1672     dxva2_lib
1673     libc_msvcrt
1674     libdc1394_1
1675     libdc1394_2
1676     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1677     sdl
1678     section_data_rel_ro
1679     threads
1680     vaapi_drm
1681     vaapi_x11
1682     vdpau_x11
1683     xlib
1684 "
1685
1686 # options emitted with CONFIG_ prefix but not available on the command line
1687 CONFIG_EXTRA="
1688     aandcttables
1689     ac3dsp
1690     audio_frame_queue
1691     audiodsp
1692     blockdsp
1693     bswapdsp
1694     cabac
1695     dirac_parse
1696     dvprofile
1697     faandct
1698     faanidct
1699     fdctdsp
1700     flacdsp
1701     fmtconvert
1702     g722dsp
1703     gcrypt
1704     gmp
1705     golomb
1706     gplv3
1707     h263dsp
1708     h264chroma
1709     h264dsp
1710     h264parse
1711     h264pred
1712     h264qpel
1713     hpeldsp
1714     huffman
1715     huffyuvdsp
1716     huffyuvencdsp
1717     idctdsp
1718     iirfilter
1719     imdct15
1720     intrax8
1721     iso_media
1722     ividsp
1723     jpegtables
1724     libx262
1725     lgplv3
1726     lpc
1727     lzf
1728     me_cmp
1729     mpeg_er
1730     mpegaudio
1731     mpegaudiodsp
1732     mpegvideo
1733     mpegvideoenc
1734     mss34dsp
1735     pixblockdsp
1736     qpeldsp
1737     qsv
1738     qsvdec
1739     qsvenc
1740     rangecoder
1741     riffdec
1742     riffenc
1743     rtpdec
1744     rtpenc_chain
1745     rv34dsp
1746     sinewin
1747     snappy
1748     srtp
1749     startcode
1750     texturedsp
1751     texturedspenc
1752     tpeldsp
1753     vaapi_encode
1754     vc1dsp
1755     videodsp
1756     vp3dsp
1757     vp56dsp
1758     vp8dsp
1759     wma_freqs
1760     wmv2dsp
1761 "
1762
1763 CMDLINE_SELECT="
1764     $ARCH_EXT_LIST
1765     $CONFIG_LIST
1766     $HAVE_LIST_CMDLINE
1767     $THREADS_LIST
1768     asm
1769     cross_compile
1770     debug
1771     extra_warnings
1772     logging
1773     lto
1774     optimizations
1775     rpath
1776 "
1777
1778 PATHS_LIST="
1779     bindir
1780     datadir
1781     docdir
1782     incdir
1783     libdir
1784     mandir
1785     prefix
1786     shlibdir
1787 "
1788
1789 CMDLINE_SET="
1790     $PATHS_LIST
1791     ar
1792     arch
1793     as
1794     build_suffix
1795     cc
1796     objcc
1797     cpu
1798     cross_prefix
1799     custom_allocator
1800     dep_cc
1801     env
1802     extra_version
1803     host_cc
1804     host_cflags
1805     host_ld
1806     host_ldflags
1807     host_libs
1808     host_os
1809     ld
1810     logfile
1811     malloc_prefix
1812     nm
1813     optflags
1814     pkg_config
1815     pkg_config_flags
1816     random_seed
1817     samples
1818     sysinclude
1819     sysroot
1820     target_exec
1821     target_os
1822     target_path
1823     target_samples
1824     toolchain
1825 "
1826
1827 CMDLINE_APPEND="
1828     extra_cflags
1829     extra_objcflags
1830     host_cppflags
1831 "
1832
1833 # code dependency declarations
1834
1835 # architecture extensions
1836
1837 armv5te_deps="arm"
1838 armv6_deps="arm"
1839 armv6t2_deps="arm"
1840 armv8_deps="aarch64"
1841 neon_deps_any="aarch64 arm"
1842 intrinsics_neon_deps="neon"
1843 vfp_deps_any="aarch64 arm"
1844 vfpv3_deps="vfp"
1845
1846 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1847
1848 altivec_deps="ppc"
1849 ppc4xx_deps="ppc"
1850 vsx_deps="altivec"
1851 power8_deps="vsx"
1852
1853 cpunop_deps="i686"
1854 x86_64_select="i686"
1855 x86_64_suggest="fast_cmov"
1856
1857 amd3dnow_deps="mmx"
1858 amd3dnowext_deps="amd3dnow"
1859 i686_deps="x86"
1860 mmx_deps="x86"
1861 mmxext_deps="mmx"
1862 sse_deps="mmxext"
1863 sse2_deps="sse"
1864 sse3_deps="sse2"
1865 ssse3_deps="sse3"
1866 sse4_deps="ssse3"
1867 sse42_deps="sse4"
1868 avx_deps="sse42"
1869 xop_deps="avx"
1870 fma3_deps="avx"
1871 fma4_deps="avx"
1872 avx2_deps="avx"
1873
1874 mmx_external_deps="yasm"
1875 mmx_inline_deps="inline_asm"
1876 mmx_suggest="mmx_external mmx_inline"
1877
1878 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1879     eval dep=\$${ext}_deps
1880     eval ${ext}_external_deps='"${dep}_external"'
1881     eval ${ext}_inline_deps='"${dep}_inline"'
1882     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1883 done
1884
1885 aligned_stack_if_any="aarch64 ppc x86"
1886 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1887 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1888 fast_unaligned_if_any="aarch64 ppc x86"
1889 simd_align_16_if_any="altivec neon sse"
1890 simd_align_32_if_any="avx"
1891
1892 # system capabilities
1893 symver_if_any="symver_asm_label symver_gnu_asm"
1894 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
1895
1896 # threading support
1897 atomics_gcc_if="sync_val_compare_and_swap"
1898 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1899 atomics_win32_if="MemoryBarrier"
1900 atomics_native_if_any="$ATOMICS_LIST"
1901 w32threads_deps="atomics_native"
1902 threads_if_any="$THREADS_LIST"
1903
1904 # subsystems
1905 dct_select="rdft"
1906 dirac_parse_select="golomb"
1907 error_resilience_select="me_cmp"
1908 faandct_deps="faan fdctdsp"
1909 faanidct_deps="faan idctdsp"
1910 h264dsp_select="startcode"
1911 intrax8_select="blockdsp idctdsp"
1912 mdct_select="fft"
1913 rdft_select="fft"
1914 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1915 mpeg_er_select="error_resilience"
1916 mpegaudio_select="mpegaudiodsp"
1917 mpegaudiodsp_select="dct"
1918 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1919 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1920 vc1dsp_select="h264chroma qpeldsp startcode"
1921
1922 # decoders / encoders
1923 aac_decoder_select="imdct15 mdct sinewin"
1924 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1925 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1926 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1927 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1928 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1929 adpcm_g722_decoder_select="g722dsp"
1930 adpcm_g722_encoder_select="g722dsp"
1931 aic_decoder_select="golomb idctdsp"
1932 alac_encoder_select="lpc"
1933 als_decoder_select="bswapdsp"
1934 amrnb_decoder_select="lsp"
1935 amrwb_decoder_select="lsp"
1936 amv_decoder_select="sp5x_decoder"
1937 ape_decoder_select="bswapdsp"
1938 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1939 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1940 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1941 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1942 atrac1_decoder_select="mdct sinewin"
1943 atrac3_decoder_select="mdct"
1944 atrac3p_decoder_select="mdct sinewin"
1945 bink_decoder_select="blockdsp hpeldsp"
1946 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1947 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1948 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1949 cllc_decoder_select="bswapdsp"
1950 comfortnoise_encoder_select="lpc"
1951 cook_decoder_select="audiodsp mdct sinewin"
1952 cscd_decoder_select="lzo"
1953 cscd_decoder_suggest="zlib"
1954 dca_decoder_select="fmtconvert mdct"
1955 dds_decoder_select="texturedsp"
1956 dnxhd_decoder_select="blockdsp idctdsp"
1957 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1958 dvvideo_decoder_select="dvprofile idctdsp"
1959 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1960 dxa_decoder_deps="zlib"
1961 dxv_decoder_select="lzf texturedsp"
1962 eac3_decoder_select="ac3_decoder"
1963 eac3_encoder_select="ac3_encoder"
1964 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1965 eatgq_decoder_select="aandcttables idctdsp"
1966 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
1967 exr_decoder_deps="zlib"
1968 ffv1_decoder_select="golomb rangecoder"
1969 ffv1_encoder_select="rangecoder"
1970 ffvhuff_decoder_select="huffyuv_decoder"
1971 ffvhuff_encoder_select="huffyuv_encoder"
1972 fic_decoder_select="golomb"
1973 flac_decoder_select="flacdsp golomb"
1974 flac_encoder_select="bswapdsp flacdsp golomb lpc"
1975 flashsv_decoder_deps="zlib"
1976 flashsv_encoder_deps="zlib"
1977 flashsv2_decoder_deps="zlib"
1978 flv_decoder_select="h263_decoder"
1979 flv_encoder_select="h263_encoder"
1980 fourxm_decoder_select="blockdsp bswapdsp"
1981 fraps_decoder_select="bswapdsp huffman"
1982 g2m_decoder_deps="zlib"
1983 g2m_decoder_select="blockdsp idctdsp jpegtables"
1984 h261_decoder_select="mpeg_er mpegvideo"
1985 h261_encoder_select="aandcttables mpegvideoenc"
1986 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1987 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1988 h263i_decoder_select="h263_decoder"
1989 h263p_encoder_select="h263_encoder"
1990 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
1991 h264_decoder_suggest="error_resilience"
1992 hap_decoder_select="snappy texturedsp"
1993 hap_encoder_deps="libsnappy"
1994 hap_encoder_select="texturedspenc"
1995 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1996 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1997 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1998 iac_decoder_select="imc_decoder"
1999 imc_decoder_select="bswapdsp fft mdct sinewin"
2000 indeo3_decoder_select="hpeldsp"
2001 indeo4_decoder_select="ividsp"
2002 indeo5_decoder_select="ividsp"
2003 interplay_video_decoder_select="hpeldsp"
2004 jpegls_decoder_select="golomb mjpeg_decoder"
2005 jpegls_encoder_select="golomb"
2006 jv_decoder_select="blockdsp"
2007 lagarith_decoder_select="huffyuvdsp"
2008 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2009 loco_decoder_select="golomb"
2010 magicyuv_decoder_select="huffyuvdsp"
2011 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2012 metasound_decoder_select="lsp mdct sinewin"
2013 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2014 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2015 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2016 mjpegb_decoder_select="mjpeg_decoder"
2017 mlp_decoder_select="mlp_parser"
2018 motionpixels_decoder_select="bswapdsp"
2019 mp1_decoder_select="mpegaudio"
2020 mp1float_decoder_select="mpegaudio"
2021 mp2_decoder_select="mpegaudio"
2022 mp2float_decoder_select="mpegaudio"
2023 mp3_decoder_select="mpegaudio"
2024 mp3adu_decoder_select="mpegaudio"
2025 mp3adufloat_decoder_select="mpegaudio"
2026 mp3float_decoder_select="mpegaudio"
2027 mp3on4_decoder_select="mpegaudio"
2028 mp3on4float_decoder_select="mpegaudio"
2029 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2030 mpc8_decoder_select="mpegaudiodsp"
2031 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2032 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2033 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2034 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2035 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2036 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2037 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2038 mpeg4_encoder_select="h263_encoder"
2039 msa1_decoder_select="mss34dsp"
2040 msmpeg4v1_decoder_select="h263_decoder"
2041 msmpeg4v2_decoder_select="h263_decoder"
2042 msmpeg4v2_encoder_select="h263_encoder"
2043 msmpeg4v3_decoder_select="h263_decoder"
2044 msmpeg4v3_encoder_select="h263_encoder"
2045 mss2_decoder_select="error_resilience mpeg_er mpegvideo vc1_decoder"
2046 mts2_decoder_select="mss34dsp"
2047 mxpeg_decoder_select="mjpeg_decoder"
2048 nellymoser_decoder_select="mdct sinewin"
2049 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2050 nuv_decoder_select="idctdsp lzo"
2051 on2avc_decoder_select="mdct"
2052 opus_decoder_deps="avresample"
2053 opus_decoder_select="imdct15"
2054 png_decoder_deps="zlib"
2055 png_encoder_deps="zlib"
2056 png_encoder_select="huffyuvencdsp"
2057 prores_decoder_select="idctdsp"
2058 prores_encoder_select="fdctdsp"
2059 qcelp_decoder_select="lsp"
2060 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2061 ra_144_encoder_select="audio_frame_queue lpc"
2062 ralf_decoder_select="golomb"
2063 rscc_decoder_deps="zlib"
2064 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2065 rv10_encoder_select="h263_encoder"
2066 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2067 rv20_encoder_select="h263_encoder"
2068 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2069 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2070 screenpresso_decoder_deps="zlib"
2071 shorten_decoder_select="golomb"
2072 sipr_decoder_select="lsp"
2073 sp5x_decoder_select="mjpeg_decoder"
2074 svq1_decoder_select="hpeldsp"
2075 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2076 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2077 svq3_decoder_suggest="zlib"
2078 tak_decoder_select="audiodsp"
2079 tdsc_decoder_deps="zlib"
2080 tdsc_decoder_select="mjpeg_decoder"
2081 theora_decoder_select="vp3_decoder"
2082 thp_decoder_select="mjpeg_decoder"
2083 tiff_decoder_suggest="zlib"
2084 tiff_encoder_suggest="zlib"
2085 truehd_decoder_select="mlp_decoder"
2086 truemotion2_decoder_select="bswapdsp"
2087 truespeech_decoder_select="bswapdsp"
2088 tscc_decoder_deps="zlib"
2089 txd_decoder_select="texturedsp"
2090 twinvq_decoder_select="mdct lsp sinewin"
2091 utvideo_decoder_select="bswapdsp"
2092 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2093 vble_decoder_select="huffyuvdsp"
2094 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2095 vc1image_decoder_select="vc1_decoder"
2096 vorbis_decoder_select="mdct"
2097 vorbis_encoder_select="mdct"
2098 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2099 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2100 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2101 vp6a_decoder_select="vp6_decoder"
2102 vp6f_decoder_select="vp6_decoder"
2103 vp7_decoder_select="h264pred videodsp vp8dsp"
2104 vp8_decoder_select="h264pred videodsp vp8dsp"
2105 vp9_decoder_select="videodsp"
2106 webp_decoder_select="vp8_decoder"
2107 wmapro_decoder_select="mdct sinewin wma_freqs"
2108 wmav1_decoder_select="mdct sinewin wma_freqs"
2109 wmav1_encoder_select="mdct sinewin wma_freqs"
2110 wmav2_decoder_select="mdct sinewin wma_freqs"
2111 wmav2_encoder_select="mdct sinewin wma_freqs"
2112 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2113 wmv1_decoder_select="h263_decoder"
2114 wmv1_encoder_select="h263_encoder"
2115 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2116 wmv2_encoder_select="h263_encoder wmv2dsp"
2117 wmv3_decoder_select="vc1_decoder"
2118 wmv3image_decoder_select="wmv3_decoder"
2119 zerocodec_decoder_deps="zlib"
2120 zlib_decoder_deps="zlib"
2121 zlib_encoder_deps="zlib"
2122 zmbv_decoder_deps="zlib"
2123 zmbv_encoder_deps="zlib"
2124
2125 # hardware accelerators
2126 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2127 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2128 vaapi_deps="va_va_h"
2129 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2130 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2131 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2132
2133 h263_vaapi_hwaccel_deps="vaapi"
2134 h263_vaapi_hwaccel_select="h263_decoder"
2135 h264_d3d11va_hwaccel_deps="d3d11va"
2136 h264_d3d11va_hwaccel_select="h264_decoder"
2137 h264_dxva2_hwaccel_deps="dxva2"
2138 h264_dxva2_hwaccel_select="h264_decoder"
2139 h264_mmal_decoder_deps="mmal"
2140 h264_mmal_decoder_select="mmal"
2141 h264_mmal_hwaccel_deps="mmal"
2142 h264_omx_encoder_deps="omx"
2143 h264_qsv_hwaccel_deps="libmfx"
2144 h264_vaapi_hwaccel_deps="vaapi"
2145 h264_vaapi_hwaccel_select="h264_decoder"
2146 h264_vda_hwaccel_deps="vda"
2147 h264_vda_hwaccel_select="h264_decoder"
2148 h264_vda_old_hwaccel_deps="vda"
2149 h264_vda_old_hwaccel_select="h264_decoder"
2150 h264_vdpau_hwaccel_deps="vdpau"
2151 h264_vdpau_hwaccel_select="h264_decoder"
2152 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2153 hevc_d3d11va_hwaccel_select="hevc_decoder"
2154 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2155 hevc_dxva2_hwaccel_select="hevc_decoder"
2156 hevc_qsv_hwaccel_deps="libmfx"
2157 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2158 hevc_vdpau_hwaccel_select="hevc_decoder"
2159 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2160 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2161 mpeg1_vdpau_hwaccel_deps="vdpau"
2162 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2163 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2164 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2165 mpeg2_dxva2_hwaccel_deps="dxva2"
2166 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2167 mpeg2_mmal_decoder_deps="mmal"
2168 mpeg2_mmal_decoder_select="mmal"
2169 mpeg2_mmal_hwaccel_deps="mmal"
2170 mpeg2_qsv_hwaccel_deps="libmfx"
2171 mpeg2_vaapi_hwaccel_deps="vaapi"
2172 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2173 mpeg2_vdpau_hwaccel_deps="vdpau"
2174 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2175 mpeg4_omx_encoder_deps="omx"
2176 mpeg4_vaapi_hwaccel_deps="vaapi"
2177 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2178 mpeg4_vdpau_hwaccel_deps="vdpau"
2179 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2180 vc1_d3d11va_hwaccel_deps="d3d11va"
2181 vc1_d3d11va_hwaccel_select="vc1_decoder"
2182 vc1_dxva2_hwaccel_deps="dxva2"
2183 vc1_dxva2_hwaccel_select="vc1_decoder"
2184 vc1_mmal_decoder_deps="mmal"
2185 vc1_mmal_decoder_select="mmal"
2186 vc1_mmal_hwaccel_deps="mmal"
2187 vc1_qsv_hwaccel_deps="libmfx"
2188 vc1_vaapi_hwaccel_deps="vaapi"
2189 vc1_vaapi_hwaccel_select="vc1_decoder"
2190 vc1_vdpau_hwaccel_deps="vdpau"
2191 vc1_vdpau_hwaccel_select="vc1_decoder"
2192 vp8_qsv_hwaccel_deps="libmfx"
2193 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2194 vp8_vaapi_hwaccel_select="vp8_decoder"
2195 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2196 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2197 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2198 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2199
2200 # hardware-accelerated codecs
2201 nvenc_deps_any="dlopen LoadLibrary"
2202 nvenc_extralibs='$ldl'
2203 omx_deps="dlopen pthreads"
2204 omx_extralibs='$ldl'
2205 qsvdec_select="qsv"
2206 qsvenc_select="qsv"
2207 vaapi_encode_deps="vaapi"
2208
2209 hwupload_cuda_filter_deps="cuda"
2210 scale_npp_filter_deps="cuda libnpp"
2211
2212 h264_nvenc_encoder_deps="nvenc"
2213 h264_qsv_decoder_deps="libmfx"
2214 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2215 h264_qsv_encoder_deps="libmfx"
2216 h264_qsv_encoder_select="qsvenc"
2217 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2218 h264_vaapi_encoder_select="vaapi_encode golomb"
2219
2220 hevc_nvenc_encoder_deps="nvenc"
2221 hevc_qsv_decoder_deps="libmfx"
2222 hevc_qsv_encoder_deps="libmfx"
2223 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2224 hevc_qsv_encoder_select="qsvenc"
2225 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2226 hevc_vaapi_encoder_select="vaapi_encode golomb"
2227 mpeg2_qsv_decoder_deps="libmfx"
2228 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2229 mpeg2_qsv_encoder_deps="libmfx"
2230 mpeg2_qsv_encoder_select="qsvenc"
2231 vc1_qsv_decoder_deps="libmfx"
2232 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2233 vp8_qsv_decoder_deps="libmfx"
2234 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2235
2236 nvenc_h264_encoder_deps="nvenc"
2237 nvenc_hevc_encoder_deps="nvenc"
2238
2239 # parsers
2240 h264_parser_select="golomb h264dsp h264parse"
2241 hevc_parser_select="golomb"
2242 mpegvideo_parser_select="mpegvideo"
2243 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2244 vc1_parser_select="vc1dsp"
2245
2246 # bitstream_filters
2247 mjpeg2jpeg_bsf_select="jpegtables"
2248
2249 # external libraries
2250 libdcadec_decoder_deps="libdcadec"
2251 libfaac_encoder_deps="libfaac"
2252 libfaac_encoder_select="audio_frame_queue"
2253 libfdk_aac_decoder_deps="libfdk_aac"
2254 libfdk_aac_encoder_deps="libfdk_aac"
2255 libfdk_aac_encoder_select="audio_frame_queue"
2256 libgsm_decoder_deps="libgsm"
2257 libgsm_encoder_deps="libgsm"
2258 libgsm_ms_decoder_deps="libgsm"
2259 libgsm_ms_encoder_deps="libgsm"
2260 libilbc_decoder_deps="libilbc"
2261 libilbc_encoder_deps="libilbc"
2262 libkvazaar_encoder_deps="libkvazaar"
2263 libmp3lame_encoder_deps="libmp3lame"
2264 libmp3lame_encoder_select="audio_frame_queue"
2265 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2266 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2267 libopencore_amrnb_encoder_select="audio_frame_queue"
2268 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2269 libopenh264_decoder_deps="libopenh264"
2270 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2271 libopenh264_encoder_deps="libopenh264"
2272 libopenjpeg_decoder_deps="libopenjpeg"
2273 libopenjpeg_encoder_deps="libopenjpeg"
2274 libopus_decoder_deps="libopus"
2275 libopus_encoder_deps="libopus"
2276 libopus_encoder_select="audio_frame_queue"
2277 libschroedinger_decoder_deps="libschroedinger"
2278 libschroedinger_encoder_deps="libschroedinger"
2279 libspeex_decoder_deps="libspeex"
2280 libspeex_encoder_deps="libspeex"
2281 libspeex_encoder_select="audio_frame_queue"
2282 libtheora_encoder_deps="libtheora"
2283 libtwolame_encoder_deps="libtwolame"
2284 libvo_aacenc_encoder_deps="libvo_aacenc"
2285 libvo_aacenc_encoder_select="audio_frame_queue"
2286 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2287 libvorbis_encoder_deps="libvorbis"
2288 libvorbis_encoder_select="audio_frame_queue"
2289 libvpx_vp8_decoder_deps="libvpx"
2290 libvpx_vp8_encoder_deps="libvpx"
2291 libvpx_vp9_decoder_deps="libvpx"
2292 libvpx_vp9_encoder_deps="libvpx"
2293 libwavpack_encoder_deps="libwavpack"
2294 libwebp_encoder_deps="libwebp"
2295 libx262_encoder_deps="libx262"
2296 libx264_encoder_deps="libx264"
2297 libx265_encoder_deps="libx265"
2298 libxavs_encoder_deps="libxavs"
2299 libxvid_encoder_deps="libxvid mkstemp"
2300
2301 # demuxers / muxers
2302 ac3_demuxer_select="ac3_parser"
2303 asf_demuxer_select="riffdec"
2304 asf_muxer_select="riffenc"
2305 asf_stream_muxer_select="asf_muxer"
2306 avi_demuxer_select="iso_media riffdec"
2307 avi_muxer_select="riffenc"
2308 avisynth_demuxer_deps="avisynth"
2309 avisynth_demuxer_select="riffdec"
2310 caf_demuxer_select="iso_media riffdec"
2311 dash_muxer_select="mp4_muxer"
2312 dirac_demuxer_select="dirac_parser"
2313 dv_demuxer_select="dvprofile"
2314 dv_muxer_select="dvprofile"
2315 dxa_demuxer_select="riffdec"
2316 eac3_demuxer_select="ac3_parser"
2317 f4v_muxer_select="mov_muxer"
2318 flac_demuxer_select="flac_parser"
2319 hds_muxer_select="flv_muxer"
2320 hls_muxer_select="mpegts_muxer"
2321 ipod_muxer_select="mov_muxer"
2322 ismv_muxer_select="mov_muxer"
2323 matroska_audio_muxer_select="matroska_muxer"
2324 matroska_demuxer_select="iso_media riffdec"
2325 matroska_demuxer_suggest="bzlib lzo zlib"
2326 matroska_muxer_select="iso_media riffenc"
2327 mmf_muxer_select="riffenc"
2328 mov_demuxer_select="iso_media riffdec"
2329 mov_demuxer_suggest="zlib"
2330 mov_muxer_select="iso_media riffenc rtpenc_chain"
2331 mp3_demuxer_select="mpegaudio_parser"
2332 mp4_muxer_select="mov_muxer"
2333 mpegts_demuxer_select="iso_media"
2334 mpegts_muxer_select="adts_muxer latm_muxer"
2335 mpegtsraw_demuxer_select="mpegts_demuxer"
2336 mxf_d10_muxer_select="mxf_muxer"
2337 nut_muxer_select="riffenc"
2338 nuv_demuxer_select="riffdec"
2339 oga_muxer_select="ogg_muxer"
2340 ogg_demuxer_select="dirac_parse"
2341 opus_muxer_select="ogg_muxer"
2342 psp_muxer_select="mov_muxer"
2343 rtp_demuxer_select="sdp_demuxer"
2344 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2345 rtsp_demuxer_select="http_protocol rtpdec"
2346 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2347 sap_demuxer_select="sdp_demuxer"
2348 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2349 sdp_demuxer_select="rtpdec"
2350 smoothstreaming_muxer_select="ismv_muxer"
2351 spdif_muxer_select="aac_parser"
2352 spx_muxer_select="ogg_muxer"
2353 swf_demuxer_suggest="zlib"
2354 tak_demuxer_select="tak_parser"
2355 tg2_muxer_select="mov_muxer"
2356 tgp_muxer_select="mov_muxer"
2357 w64_demuxer_select="wav_demuxer"
2358 wav_demuxer_select="riffdec"
2359 wav_muxer_select="riffenc"
2360 webm_muxer_select="iso_media riffenc"
2361 webm_muxer_suggest="libopus_encoder libvorbis_encoder libvpx_vp8_encoder libvpx_vp9_encoder"
2362 wtv_demuxer_select="mpegts_demuxer riffdec"
2363 xmv_demuxer_select="riffdec"
2364 xwma_demuxer_select="riffdec"
2365
2366 # indevs / outdevs
2367 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2368 alsa_outdev_deps="alsa_asoundlib_h"
2369 avfoundation_indev_deps="AVFoundation_AVFoundation_h"
2370 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2371 dv1394_indev_deps="dv1394"
2372 dv1394_indev_select="dv_demuxer"
2373 fbdev_indev_deps="linux_fb_h"
2374 jack_indev_deps="jack_jack_h"
2375 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2376 libcdio_indev_deps="libcdio"
2377 libdc1394_indev_deps="libdc1394"
2378 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2379 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2380 pulse_indev_deps="libpulse"
2381 sndio_indev_deps="sndio_h"
2382 sndio_outdev_deps="sndio_h"
2383 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2384 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2385 vfwcap_indev_extralibs="-lavicap32"
2386 xcbgrab_indev_deps="libxcb"
2387
2388 # protocols
2389 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2390 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2391 ffrtmpcrypt_protocol_select="tcp_protocol"
2392 ffrtmphttp_protocol_deps="!librtmp_protocol"
2393 ffrtmphttp_protocol_select="http_protocol"
2394 gopher_protocol_select="network"
2395 http_protocol_select="tcp_protocol"
2396 httpproxy_protocol_select="tcp_protocol"
2397 https_protocol_select="tls_protocol"
2398 icecast_protocol_select="http_protocol"
2399 librtmp_protocol_deps="librtmp"
2400 librtmpe_protocol_deps="librtmp"
2401 librtmps_protocol_deps="librtmp"
2402 librtmpt_protocol_deps="librtmp"
2403 librtmpte_protocol_deps="librtmp"
2404 mmsh_protocol_select="http_protocol"
2405 mmst_protocol_select="network"
2406 rtmp_protocol_deps="!librtmp_protocol"
2407 rtmp_protocol_select="tcp_protocol"
2408 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2409 rtmps_protocol_deps="!librtmp_protocol"
2410 rtmps_protocol_select="tls_protocol"
2411 rtmpt_protocol_select="ffrtmphttp_protocol"
2412 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2413 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2414 rtp_protocol_select="udp_protocol"
2415 sctp_protocol_deps="struct_sctp_event_subscribe"
2416 sctp_protocol_select="network"
2417 srtp_protocol_select="rtp_protocol srtp"
2418 tcp_protocol_select="network"
2419 tls_gnutls_protocol_deps="gnutls"
2420 tls_gnutls_protocol_select="tcp_protocol"
2421 tls_openssl_protocol_deps="openssl !tls_gnutls_protocol"
2422 tls_openssl_protocol_select="tcp_protocol"
2423 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2424 udp_protocol_select="network"
2425 unix_protocol_deps="sys_un_h"
2426 unix_protocol_select="network"
2427
2428 # filters
2429 blackframe_filter_deps="gpl"
2430 boxblur_filter_deps="gpl"
2431 bs2b_filter_deps="libbs2b"
2432 cropdetect_filter_deps="gpl"
2433 deinterlace_qsv_filter_deps="libmfx"
2434 delogo_filter_deps="gpl"
2435 drawtext_filter_deps="libfreetype"
2436 frei0r_filter_deps="frei0r dlopen"
2437 frei0r_filter_extralibs='$ldl'
2438 frei0r_src_filter_deps="frei0r dlopen"
2439 frei0r_src_filter_extralibs='$ldl'
2440 hdcd_filter_deps="libhdcd"
2441 hqdn3d_filter_deps="gpl"
2442 interlace_filter_deps="gpl"
2443 ocv_filter_deps="libopencv"
2444 resample_filter_deps="avresample"
2445 scale_filter_deps="swscale"
2446 scale_qsv_filter_deps="libmfx"
2447 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2448
2449 # examples
2450 decode_audio_example_deps="avcodec avutil"
2451 decode_video_example_deps="avcodec avutil"
2452 encode_audio_example_deps="avcodec avutil"
2453 encode_video_example_deps="avcodec avutil"
2454 filter_audio_example_deps="avfilter avutil"
2455 metadata_example_deps="avformat avutil"
2456 output_example_deps="avcodec avformat avutil swscale"
2457 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
2458 transcode_aac_example_deps="avcodec avformat avresample"
2459
2460 # libraries, in linking order
2461 avcodec_deps="avutil"
2462 avdevice_deps="avformat avcodec avutil"
2463 avfilter_deps="avutil"
2464 avformat_deps="avcodec avutil"
2465 avresample_deps="avutil"
2466 swscale_deps="avutil"
2467
2468 # programs
2469 avconv_deps="avcodec avfilter avformat avresample swscale"
2470 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2471                fps_filter null_filter resample_filter scale_filter
2472                trim_filter"
2473 avplay_deps="avcodec avfilter avformat avresample sdl"
2474 avplay_libs='$sdl_libs'
2475 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2476 avprobe_deps="avcodec avformat"
2477
2478 # documentation
2479 pod2man_deps="doc"
2480 texi2html_deps="doc"
2481
2482 # default parameters
2483
2484 logfile="config.log"
2485
2486 # installation paths
2487 prefix_default="/usr/local"
2488 bindir_default='${prefix}/bin'
2489 datadir_default='${prefix}/share/avconv'
2490 docdir_default='${prefix}/share/doc/libav'
2491 incdir_default='${prefix}/include'
2492 libdir_default='${prefix}/lib'
2493 mandir_default='${prefix}/share/man'
2494 shlibdir_default="$libdir_default"
2495
2496 # toolchain
2497 ar_default="ar"
2498 cc_default="gcc"
2499 host_cc_default="gcc"
2500 cp_f="cp -f"
2501 ln_s="ln -s -f"
2502 nm_default="nm -g"
2503 objformat="elf"
2504 pkg_config_default=pkg-config
2505 ranlib="ranlib"
2506 strip="strip"
2507 version_script='--version-script'
2508 yasmexe="yasm"
2509
2510 # machine
2511 arch_default=$(uname -m)
2512 cpu="generic"
2513 intrinsics="none"
2514
2515 # OS
2516 target_os_default=$(tolower $(uname -s))
2517 host_os=$target_os_default
2518
2519 # configurable options
2520 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2521
2522 enable asm
2523 enable debug
2524 enable doc
2525 enable faan faandct faanidct
2526 enable optimizations
2527 enable safe_bitstream_reader
2528 enable static
2529 enable swscale_alpha
2530 enable valgrind_backtrace
2531
2532 # By default, enable only those hwaccels that have no external dependencies.
2533 enable d3d11va dxva2 vda vdpau
2534
2535 # build settings
2536 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2537 LIBPREF="lib"
2538 LIBSUF=".a"
2539 FULLNAME='$(NAME)$(BUILDSUF)'
2540 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2541 SLIBPREF="lib"
2542 SLIBSUF=".so"
2543 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2544 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2545 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2546 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2547 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2548 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2549 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2550
2551 asflags_filter=echo
2552 cflags_filter=echo
2553 ldflags_filter=echo
2554
2555 AS_C='-c'
2556 AS_O='-o $@'
2557 CC_C='-c'
2558 CC_E='-E -o $@'
2559 CC_O='-o $@'
2560 OBJCC_C='-c'
2561 OBJCC_E='-E -o $@'
2562 OBJCC_O='-o $@'
2563 LD_O='-o $@'
2564 LD_LIB='-l%'
2565 LD_PATH='-L'
2566 HOSTCC_C='-c'
2567 HOSTCC_E='-E -o $@'
2568 HOSTCC_O='-o $@'
2569 HOSTLD_O='-o $@'
2570
2571 host_libs='-lm'
2572 host_cflags_filter=echo
2573 host_ldflags_filter=echo
2574
2575 target_path='$(CURDIR)'
2576
2577 # since the object filename is not given with the -MM flag, the compiler
2578 # is only able to print the basename, and we must add the path ourselves
2579 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2580 DEPFLAGS='-MM'
2581
2582 # find source path
2583 if test -f configure; then
2584     source_path=.
2585 else
2586     source_path=$(cd $(dirname "$0"); pwd)
2587     echo "$source_path" | grep -q '[[:blank:]]' &&
2588         die "Out of tree builds are impossible with whitespace in source path."
2589     test -e "$source_path/config.h" &&
2590         die "Out of tree builds are impossible with config.h in source dir."
2591 fi
2592
2593 for v in "$@"; do
2594     r=${v#*=}
2595     l=${v%"$r"}
2596     r=$(sh_quote "$r")
2597     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2598 done
2599
2600 find_things(){
2601     thing=$1
2602     pattern=$2
2603     file=$source_path/$3
2604     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2605 }
2606
2607 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2608 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2609 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2610 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2611 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2612 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2613 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2614 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2615 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2616
2617 find_things_extern(){
2618     thing=$1
2619     pattern=$2
2620     file=$source_path/$3
2621     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2622 }
2623
2624 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2625 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2626
2627 ALL_COMPONENTS="
2628     $BSF_LIST
2629     $DECODER_LIST
2630     $DEMUXER_LIST
2631     $ENCODER_LIST
2632     $FILTER_LIST
2633     $HWACCEL_LIST
2634     $INDEV_LIST
2635     $MUXER_LIST
2636     $OUTDEV_LIST
2637     $PARSER_LIST
2638     $PROTOCOL_LIST
2639 "
2640
2641 for n in $COMPONENT_LIST; do
2642     v=$(toupper ${n%s})_LIST
2643     eval enable \$$v
2644     eval ${n}_if_any="\$$v"
2645 done
2646
2647 enable $ARCH_EXT_LIST
2648
2649 die_unknown(){
2650     echo "Unknown option \"$1\"."
2651     echo "See $0 --help for available options."
2652     exit 1
2653 }
2654
2655 print_3_columns() {
2656     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2657 }
2658
2659 show_list() {
2660     suffix=_$1
2661     shift
2662     echo $* | sed s/$suffix//g | print_3_columns
2663     exit 0
2664 }
2665
2666 rand_list(){
2667     IFS=', '
2668     set -- $*
2669     unset IFS
2670     for thing; do
2671         comp=${thing%:*}
2672         prob=${thing#$comp}
2673         prob=${prob#:}
2674         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2675         echo "prob ${prob:-0.5}"
2676         printf '%s\n' $comp
2677     done
2678 }
2679
2680 do_random(){
2681     action=$1
2682     shift
2683     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2684     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2685 }
2686
2687 for opt do
2688     optval="${opt#*=}"
2689     case "$opt" in
2690         --extra-ldflags=*)
2691             add_ldflags $optval
2692         ;;
2693         --extra-ldexeflags=*)
2694             add_ldexeflags $optval
2695         ;;
2696         --extra-libs=*)
2697             add_extralibs $optval
2698         ;;
2699         --disable-devices)
2700             disable $INDEV_LIST $OUTDEV_LIST
2701         ;;
2702         --enable-debug=*)
2703             debuglevel="$optval"
2704         ;;
2705         --disable-programs)
2706             disable $PROGRAM_LIST
2707         ;;
2708         --disable-everything)
2709             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2710         ;;
2711         --disable-all)
2712             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2713             disable $LIBRARY_LIST $PROGRAM_LIST doc
2714         ;;
2715         --enable-random|--disable-random)
2716             action=${opt%%-random}
2717             do_random ${action#--} $COMPONENT_LIST
2718         ;;
2719         --enable-random=*|--disable-random=*)
2720             action=${opt%%-random=*}
2721             do_random ${action#--} $optval
2722         ;;
2723         --enable-*=*|--disable-*=*)
2724             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2725             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2726             eval list=\$$(toupper $thing)_LIST
2727             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2728             $action $(filter "$name" $list)
2729         ;;
2730         --enable-avserver|--disable-avserver*)
2731             warn "avserver has been removed, the ${opt} option is only"\
2732                  "provided for compatibility and will be removed in the future"
2733         ;;
2734         --enable-?*|--disable-?*)
2735             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2736             if is_in $option $COMPONENT_LIST; then
2737                 test $action = disable && action=unset
2738                 eval $action \$$(toupper ${option%s})_LIST
2739             elif is_in $option $CMDLINE_SELECT; then
2740                 $action $option
2741             else
2742                 die_unknown $opt
2743             fi
2744         ;;
2745         --list-*)
2746             NAME="${opt#--list-}"
2747             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2748             NAME=${NAME%s}
2749             eval show_list $NAME \$$(toupper $NAME)_LIST
2750         ;;
2751         --help|-h) show_help
2752         ;;
2753         --quiet|-q) quiet=yes
2754         ;;
2755         *)
2756             optname="${opt%%=*}"
2757             optname="${optname#--}"
2758             optname=$(echo "$optname" | sed 's/-/_/g')
2759             if is_in $optname $CMDLINE_SET; then
2760                 eval $optname='$optval'
2761             elif is_in $optname $CMDLINE_APPEND; then
2762                 append $optname "$optval"
2763             else
2764                 die_unknown $opt
2765             fi
2766         ;;
2767     esac
2768 done
2769
2770 for e in $env; do
2771     eval "export $e"
2772 done
2773
2774 disabled logging && logfile=/dev/null
2775
2776 # Die early if licensing-related configure options are incompatible.
2777 die_license_disabled() {
2778     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2779 }
2780
2781 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
2782 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2783 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2784
2785 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2786
2787 # Disable all the library-specific components if the library itself
2788 # is disabled, see AVCODEC_LIST and following _LIST variables.
2789
2790 disable_components(){
2791     disabled ${1} && disable $(
2792         eval components="\$$(toupper ${1})_COMPONENTS"
2793         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2794     )
2795 }
2796
2797 map 'disable_components $v' $LIBRARY_LIST
2798
2799 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2800 set >> $logfile
2801
2802 case "$toolchain" in
2803     *-asan)
2804         cc_default="${toolchain%-asan}"
2805         add_cflags  -fsanitize=address
2806         add_ldflags -fsanitize=address
2807     ;;
2808     *-msan)
2809         cc_default="${toolchain%-msan}"
2810         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2811         add_ldflags -fsanitize=memory
2812     ;;
2813     *-tsan)
2814         cc_default="${toolchain%-tsan}"
2815         add_cflags  -fsanitize=thread -pie
2816         add_ldflags -fsanitize=thread -pie
2817         case "$toolchain" in
2818             gcc-tsan)
2819                 add_cflags  -fPIC
2820                 add_ldflags -fPIC
2821                 ;;
2822         esac
2823     ;;
2824     *-usan)
2825         cc_default="${toolchain%-usan}"
2826         add_cflags  -fsanitize=undefined
2827         add_ldflags -fsanitize=undefined
2828         case "$toolchain" in
2829             clang-usan)
2830                 add_cflags -O1
2831                 ;;
2832         esac
2833     ;;
2834     valgrind-*)
2835         target_exec_default="valgrind"
2836         case "$toolchain" in
2837             valgrind-massif)
2838                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2839                 ;;
2840             valgrind-memcheck)
2841                 target_exec_args="--track-origins=yes --leak-check=full"
2842                 ;;
2843         esac
2844     ;;
2845     msvc)
2846         # Check whether the current MSVC version needs the C99 converter.
2847         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2848         # support enough of C99 to build libav. Default to the new
2849         # behaviour if the regexp was unable to match anything, since this
2850         # successfully parses the version number of existing supported
2851         # versions that require the converter (MSVC 2010 and 2012).
2852         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2853         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2854             cc_default="cl"
2855         else
2856             cc_default="c99wrap cl"
2857         fi
2858         ld_default="$source_path/compat/windows/mslink"
2859         nm_default="dumpbin -symbols"
2860         ar_default="lib"
2861         case "$arch" in
2862         arm*)
2863             as_default="armasm"
2864             ;;
2865         esac
2866         target_os_default="win32"
2867         # Use a relative path for TMPDIR. This makes sure all the
2868         # ffconf temp files are written with a relative path, avoiding
2869         # issues with msys/win32 path conversion for MSVC parameters
2870         # such as -Fo<file> or -out:<file>.
2871         TMPDIR=.
2872     ;;
2873     icl)
2874         cc_default="icl"
2875         ld_default="xilink"
2876         nm_default="dumpbin -symbols"
2877         ar_default="xilib"
2878         target_os_default="win32"
2879         TMPDIR=.
2880     ;;
2881     gcov)
2882         add_cflags  -fprofile-arcs -ftest-coverage
2883         add_ldflags -fprofile-arcs -ftest-coverage
2884     ;;
2885     llvm-cov)
2886         add_cflags -fprofile-arcs -ftest-coverage
2887         add_ldflags --coverage
2888     ;;
2889     hardened)
2890         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2891         add_cflags   -fno-strict-overflow -fstack-protector-all
2892         add_ldflags  -Wl,-z,relro -Wl,-z,now
2893     ;;
2894     ?*)
2895         die "Unknown toolchain $toolchain"
2896     ;;
2897 esac
2898
2899 test -n "$cross_prefix" && enable cross_compile
2900
2901 if enabled cross_compile; then
2902     test -n "$arch" && test -n "$target_os" ||
2903         die "Must specify target arch and OS when cross-compiling"
2904 fi
2905
2906 ar_default="${cross_prefix}${ar_default}"
2907 cc_default="${cross_prefix}${cc_default}"
2908 occ_default="${cross_prefix}${occ_default}"
2909 nm_default="${cross_prefix}${nm_default}"
2910 pkg_config_default="${cross_prefix}${pkg_config_default}"
2911 ranlib="${cross_prefix}${ranlib}"
2912 strip="${cross_prefix}${strip}"
2913
2914 sysinclude_default="${sysroot}/usr/include"
2915
2916 set_default arch cc pkg_config sysinclude target_exec target_os
2917 enabled cross_compile || host_cc_default=$cc
2918 set_default host_cc
2919
2920 if ! $pkg_config --version >/dev/null 2>&1; then
2921     warn "$pkg_config not found, library detection may fail."
2922     pkg_config=false
2923 fi
2924
2925 exesuf() {
2926     case $1 in
2927         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2928     esac
2929 }
2930
2931 EXESUF=$(exesuf $target_os)
2932 HOSTEXESUF=$(exesuf $host_os)
2933
2934 # set temporary file name
2935 : ${TMPDIR:=$TEMPDIR}
2936 : ${TMPDIR:=$TMP}
2937 : ${TMPDIR:=/tmp}
2938
2939 if ! check_cmd mktemp -u XXXXXX; then
2940     # simple replacement for missing mktemp
2941     # NOT SAFE FOR GENERAL USE
2942     mktemp(){
2943         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2944     }
2945 fi
2946
2947 tmpfile(){
2948     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2949         (set -C; exec > $tmp) 2>/dev/null ||
2950         die "Unable to create temporary file in $TMPDIR."
2951     append TMPFILES $tmp
2952     eval $1=$tmp
2953 }
2954
2955 trap 'rm -f -- $TMPFILES' EXIT
2956
2957 tmpfile TMPASM .asm
2958 tmpfile TMPC   .c
2959 tmpfile TMPE   $EXESUF
2960 tmpfile TMPH   .h
2961 tmpfile TMPO   .o
2962 tmpfile TMPS   .S
2963 tmpfile TMPSH  .sh
2964 tmpfile TMPV   .ver
2965
2966 unset -f mktemp
2967
2968 chmod +x $TMPE
2969
2970 # make sure we can execute files in $TMPDIR
2971 cat > $TMPSH 2>> $logfile <<EOF
2972 #! /bin/sh
2973 EOF
2974 chmod +x $TMPSH >> $logfile 2>&1
2975 if ! $TMPSH >> $logfile 2>&1; then
2976     cat <<EOF
2977 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2978 variable to another directory and make sure that it is not mounted noexec.
2979 EOF
2980     die "Sanity test failed."
2981 fi
2982
2983 armasm_flags(){
2984     for flag; do
2985         case $flag in
2986             # Filter out MSVC cl.exe options from cflags that shouldn't
2987             # be passed to gas-preprocessor
2988             -M[TD]*)                                            ;;
2989             *)                  echo $flag                      ;;
2990         esac
2991    done
2992 }
2993
2994 ccc_flags(){
2995     for flag; do
2996         case $flag in
2997             -std=c99)           echo -c99                       ;;
2998             -mcpu=*)            echo -arch ${flag#*=}           ;;
2999             -mieee)             echo -ieee                      ;;
3000             -O*|-fast)          echo $flag                      ;;
3001             -fno-math-errno)    echo -assume nomath_errno       ;;
3002             -g)                 echo -g3                        ;;
3003             -Wall)              echo -msg_enable level2         ;;
3004             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3005             -Wl,*)              echo $flag                      ;;
3006             -f*|-W*)                                            ;;
3007             *)                  echo $flag                      ;;
3008         esac
3009    done
3010 }
3011
3012 cparser_flags(){
3013     for flag; do
3014         case $flag in
3015             -Wno-switch)             echo -Wno-switch-enum ;;
3016             -Wno-format-zero-length) ;;
3017             -Wdisabled-optimization) ;;
3018             -Wno-pointer-sign)       echo -Wno-other ;;
3019             *)                       echo $flag ;;
3020         esac
3021     done
3022 }
3023
3024 msvc_common_flags(){
3025     for flag; do
3026         case $flag in
3027             # In addition to specifying certain flags under the compiler
3028             # specific filters, they must be specified here as well or else the
3029             # generic catch all at the bottom will print the original flag.
3030             -Wall)                ;;
3031             -std=c99)             ;;
3032             # Common flags
3033             -fomit-frame-pointer) ;;
3034             -g)                   echo -Z7 ;;
3035             -fno-math-errno)      ;;
3036             -fno-common)          ;;
3037             -fno-signed-zeros)    ;;
3038             -fPIC)                ;;
3039             -mthumb)              ;;
3040             -march=*)             ;;
3041             -lz)                  echo zlib.lib ;;
3042             -lavicap32)           echo vfw32.lib user32.lib ;;
3043             -lx264)               echo libx264.lib ;;
3044             -l*)                  echo ${flag#-l}.lib ;;
3045             -L*)                  echo -libpath:${flag#-L} ;;
3046             *)                    echo $flag ;;
3047         esac
3048     done
3049 }
3050
3051 msvc_flags(){
3052     msvc_common_flags "$@"
3053     for flag; do
3054         case $flag in
3055             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3056                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3057                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3058                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3059         esac
3060     done
3061 }
3062
3063 icl_flags(){
3064     msvc_common_flags "$@"
3065     for flag; do
3066         case $flag in
3067             # Despite what Intel's documentation says -Wall, which is supported
3068             # on Windows, does enable remarks so disable them here.
3069             -Wall)                echo $flag -Qdiag-disable:remark ;;
3070             -std=c99)             echo -Qstd=c99 ;;
3071         esac
3072     done
3073 }
3074
3075 pgi_flags(){
3076     for flag; do
3077         case $flag in
3078             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3079             -fomit-frame-pointer) echo -Mnoframe ;;
3080             -g)                   echo -gopt ;;
3081             *)                    echo $flag ;;
3082         esac
3083     done
3084 }
3085
3086 suncc_flags(){
3087     for flag; do
3088         case $flag in
3089             -march=*|-mcpu=*)
3090                 case "${flag#*=}" in
3091                     native)                   echo -xtarget=native       ;;
3092                     v9|niagara)               echo -xarch=sparc          ;;
3093                     ultrasparc)               echo -xarch=sparcvis       ;;
3094                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3095                     i586|pentium)             echo -xchip=pentium        ;;
3096                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3097                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3098                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3099                     pentium4*)          echo -xtarget=pentium4           ;;
3100                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3101                     *-sse3)             echo -xarch=sse3                 ;;
3102                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3103                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3104                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3105                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3106                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3107                     k8|opteron|athlon64|athlon-fx)
3108                                                echo -xarch=sse2a         ;;
3109                     athlon*)                   echo -xarch=pentium_proa  ;;
3110                 esac
3111                 ;;
3112             -std=c99)             echo -xc99              ;;
3113             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3114             -fPIC)                echo -KPIC -xcode=pic32 ;;
3115             -W*,*)                echo $flag              ;;
3116             -f*-*|-W*|-mimpure-text)                      ;;
3117             -shared)              echo -G                 ;;
3118             *)                    echo $flag              ;;
3119         esac
3120     done
3121 }
3122
3123 tms470_flags(){
3124     for flag; do
3125         case $flag in
3126             -march=*|-mcpu=*)
3127                 case "${flag#*=}" in
3128                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3129                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3130                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3131                     armv6*|arm11*)          echo -mv=6   ;;
3132                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3133                                             echo -mv=5e  ;;
3134                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3135                 esac
3136                 ;;
3137             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3138             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3139             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3140             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3141             -msoft-float)   echo --float_support=vfplib       ;;
3142             -O[0-3]|-mf=*)  echo $flag                        ;;
3143             -g)             echo -g -mn                       ;;
3144             -pds=*)         echo $flag                        ;;
3145             -D*|-I*)        echo $flag                        ;;
3146             --gcc|--abi=*)  echo $flag                        ;;
3147             -me)            echo $flag                        ;;
3148         esac
3149     done
3150 }
3151
3152 probe_cc(){
3153     pfx=$1
3154     _cc=$2
3155
3156     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3157     unset _ld_o _ldflags _ld_lib _ld_path
3158     unset _depflags _DEPCMD _DEPFLAGS
3159     _flags_filter=echo
3160
3161     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3162         _type=llvm_gcc
3163         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3164         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3165         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3166         _cflags_speed='-O3'
3167         _cflags_size='-Os'
3168     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3169         _type=gcc
3170         gcc_version=$($_cc --version | head -n1)
3171         gcc_basever=$($_cc -dumpversion)
3172         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3173         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3174         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3175         if ! $_cc -dumpversion | grep -q '^2\.'; then
3176             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3177         fi
3178         _cflags_speed='-O3'
3179         _cflags_size='-Os'
3180     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3181         _type=icc
3182         _ident=$($_cc --version | head -n1)
3183         _depflags='-MMD'
3184         _cflags_speed='-O3'
3185         _cflags_size='-Os'
3186         _cflags_noopt='-O1'
3187     elif $_cc -v 2>&1 | grep -q xlc; then
3188         _type=xlc
3189         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3190         _cflags_speed='-O5'
3191         _cflags_size='-O5 -qcompact'
3192     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3193         _type=ccc
3194         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3195         _DEPFLAGS='-M'
3196         _cflags_speed='-fast'
3197         _cflags_size='-O1'
3198         _flags_filter=ccc_flags
3199     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3200         test -d "$sysroot" || die "No valid sysroot specified."
3201         _type=armcc
3202         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3203         armcc_conf="$PWD/armcc.conf"
3204         $_cc --arm_linux_configure                 \
3205              --arm_linux_config_file="$armcc_conf" \
3206              --configure_sysroot="$sysroot"        \
3207              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3208              die "Error creating armcc configuration file."
3209         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3210         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3211         as_default="${cross_prefix}gcc"
3212         _depflags='-MMD'
3213         _cflags_speed='-O3'
3214         _cflags_size='-Os'
3215     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3216         _type=tms470
3217         _ident=$($_cc -version | head -n1 | tr -s ' ')
3218         _flags='--gcc --abi=eabi -me'
3219         _cc_e='-ppl -fe=$@'
3220         _cc_o='-fe=$@'
3221         _depflags='-ppa -ppd=$(@:.o=.d)'
3222         _cflags_speed='-O3 -mf=5'
3223         _cflags_size='-O3 -mf=2'
3224         _flags_filter=tms470_flags
3225     elif $_cc -v 2>&1 | grep -q clang; then
3226         _type=clang
3227         _ident=$($_cc --version 2>/dev/null | head -n1)
3228         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3229         _cflags_speed='-O3'
3230         _cflags_size='-Os'
3231     elif $_cc -V 2>&1 | grep -q Sun; then
3232         _type=suncc
3233         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3234         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3235         _DEPFLAGS='-xM1 -xc99'
3236         _ldflags='-std=c99'
3237         _cflags_speed='-O5'
3238         _cflags_size='-O5 -xspace'
3239         _flags_filter=suncc_flags
3240     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3241         _type=pathscale
3242         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3243         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3244         _cflags_speed='-O2'
3245         _cflags_size='-Os'
3246         _flags_filter='filter_out -Wdisabled-optimization'
3247     elif $_cc -v 2>&1 | grep -q Open64; then
3248         _type=open64
3249         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3250         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3251         _cflags_speed='-O2'
3252         _cflags_size='-Os'
3253         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3254     elif $_cc -V 2>&1 | grep -q Portland; then
3255         _type=pgi
3256         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3257         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3258         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3259         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3260         _cflags_noopt="-O1"
3261         _flags_filter=pgi_flags
3262     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3263         _type=armasm
3264         _ident=$($_cc | head -n1)
3265         # 4509: "This form of conditional instruction is deprecated"
3266         _flags="-nologo -ignore 4509"
3267         _flags_filter=armasm_flags
3268     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3269         _type=msvc
3270         _ident=$($_cc 2>&1 | head -n1)
3271         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3272         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3273         _cflags_speed="-O2"
3274         _cflags_size="-O1"
3275         if $_cc -nologo- 2>&1 | grep -q Linker; then
3276             _ld_o='-out:$@'
3277         else
3278             _ld_o='-Fe$@'
3279         fi
3280         _cc_o='-Fo$@'
3281         _cc_e='-P -Fi$@'
3282         _flags_filter=msvc_flags
3283         _ld_lib='lib%.a'
3284         _ld_path='-libpath:'
3285         _flags='-nologo'
3286     elif $_cc 2>&1 | grep -q Intel; then
3287         _type=icl
3288         _ident=$($_cc 2>&1 | head -n1)
3289         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3290         # Not only is O3 broken on 13.x+ but it is slower on all previous
3291         # versions (tested) as well.
3292         _cflags_speed="-O2"
3293         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3294         if $_cc 2>&1 | grep -q Linker; then
3295             _ld_o='-out:$@'
3296         else
3297             _ld_o='-Fe$@'
3298         fi
3299         _cc_o='-Fo$@'
3300         _cc_e='-P'
3301         _flags_filter=icl_flags
3302         _ld_lib='lib%.a'
3303         _ld_path='-libpath:'
3304         # -Qdiag-error to make icl error when seeing certain unknown arguments
3305         _flags='-nologo -Qdiag-error:4044,10157'
3306         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3307         # with MSVC which enables it by default.
3308         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3309     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3310         # lld can emulate multiple different linkers; in ms link.exe mode,
3311         # the -? parameter gives the help output which contains an identifyable
3312         # string, while it gives an error in other modes.
3313         _type=lld-link
3314         # The link.exe mode doesn't have a switch for getting the version,
3315         # but we can force it back to gnu mode and get the version from there.
3316         _ident=$($_cc -flavor gnu --version 2>/dev/null)
3317         _ld_o='-out:$@'
3318         _flags_filter=msvc_flags
3319         _ld_lib='lib%.a'
3320         _ld_path='-libpath:'
3321     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3322         _type=cparser
3323         _ident=$($_cc --version | head -n1)
3324         _depflags='-MMD'
3325         _cflags_speed='-O4'
3326         _cflags_size='-O2'
3327         _flags_filter=cparser_flags
3328     fi
3329
3330     eval ${pfx}_type=\$_type
3331     eval ${pfx}_ident=\$_ident
3332 }
3333
3334 set_ccvars(){
3335     eval ${1}_C=\${_cc_c-\${${1}_C}}
3336     eval ${1}_E=\${_cc_e-\${${1}_E}}
3337     eval ${1}_O=\${_cc_o-\${${1}_O}}
3338
3339     if [ -n "$_depflags" ]; then
3340         eval ${1}_DEPFLAGS=\$_depflags
3341     else
3342         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3343         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3344         eval DEP${1}FLAGS=\$_flags
3345     fi
3346 }
3347
3348 probe_cc cc "$cc"
3349 cflags_filter=$_flags_filter
3350 cflags_speed=$_cflags_speed
3351 cflags_size=$_cflags_size
3352 cflags_noopt=$_cflags_noopt
3353 add_cflags $_flags $_cflags
3354 cc_ldflags=$_ldflags
3355 set_ccvars CC
3356
3357 probe_cc hostcc "$host_cc"
3358 host_cflags_filter=$_flags_filter
3359 add_host_cflags  $_flags $_cflags
3360 set_ccvars HOSTCC
3361
3362 test -n "$cc_type" && enable $cc_type ||
3363     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3364
3365 : ${as_default:=$cc}
3366 : ${objcc_default:=$cc}
3367 : ${dep_cc_default:=$cc}
3368 : ${ld_default:=$cc}
3369 : ${host_ld_default:=$host_cc}
3370 set_default ar as objcc dep_cc ld host_ld
3371
3372 probe_cc as "$as"
3373 asflags_filter=$_flags_filter
3374 add_asflags $_flags $_cflags
3375 set_ccvars AS
3376
3377 probe_cc objcc "$objcc"
3378 objcflags_filter=$_flags_filter
3379 add_objcflags $_flags $_cflags
3380 set_ccvars OBJC
3381
3382 probe_cc ld "$ld"
3383 ldflags_filter=$_flags_filter
3384 add_ldflags $_flags $_ldflags
3385 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3386 LD_O=${_ld_o-$LD_O}
3387 LD_LIB=${_ld_lib-$LD_LIB}
3388 LD_PATH=${_ld_path-$LD_PATH}
3389
3390 probe_cc hostld "$host_ld"
3391 host_ldflags_filter=$_flags_filter
3392 add_host_ldflags $_flags $_ldflags
3393 HOSTLD_O=${_ld_o-$HOSTLD_O}
3394
3395 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3396     probe_cc depcc "$dep_cc"
3397     CCDEP=${_DEPCMD:-$DEPCMD}
3398     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3399     DEPCCFLAGS=$_flags
3400 fi
3401
3402 if $ar 2>&1 | grep -q Microsoft; then
3403     arflags="-nologo"
3404     ar_o='-out:$@'
3405 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3406     arflags="rq"
3407     ar_o='$@'
3408 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3409     arflags='-Xany -r -c'
3410     ar_o='$@'
3411 else
3412     arflags="rc"
3413     ar_o='$@'
3414 fi
3415
3416 add_cflags $extra_cflags
3417 add_objcflags $extra_objcflags
3418 add_asflags $extra_cflags
3419
3420 if test -n "$sysroot"; then
3421     case "$cc_type" in
3422         gcc|llvm_gcc|clang)
3423             add_cppflags --sysroot="$sysroot"
3424             add_ldflags --sysroot="$sysroot"
3425         ;;
3426         tms470)
3427             add_cppflags -I"$sysinclude"
3428             add_ldflags  --sysroot="$sysroot"
3429         ;;
3430     esac
3431 fi
3432
3433 if test "$cpu" = host; then
3434     enabled cross_compile &&
3435         die "--cpu=host makes no sense when cross-compiling."
3436
3437     case "$cc_type" in
3438         gcc|llvm_gcc)
3439             check_native(){
3440                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3441                 sed -n "/cc1.*$1=/{
3442                             s/.*$1=\\([^ ]*\\).*/\\1/
3443                             p
3444                             q
3445                         }" $TMPE
3446             }
3447             cpu=$(check_native -march || check_native -mcpu)
3448         ;;
3449     esac
3450
3451     test "${cpu:-host}" = host &&
3452         die "--cpu=host not supported with compiler $cc"
3453 fi
3454
3455 # Deal with common $arch aliases
3456 case "$arch" in
3457     aarch64|arm64)
3458         arch="aarch64"
3459     ;;
3460     arm*)
3461         arch="arm"
3462     ;;
3463     mips*|IP*)
3464         case "$arch" in
3465         *el)
3466             add_cppflags -EL
3467             add_ldflags -EL
3468         ;;
3469         *eb)
3470             add_cppflags -EB
3471             add_ldflags -EB
3472         ;;
3473         esac
3474         arch="mips"
3475     ;;
3476     parisc*|hppa*)
3477         arch="parisc"
3478     ;;
3479     "Power Macintosh"|ppc*|powerpc*)
3480         arch="ppc"
3481     ;;
3482     s390|s390x)
3483         arch="s390"
3484     ;;
3485     sh4|sh)
3486         arch="sh4"
3487     ;;
3488     sun4u|sparc*)
3489         arch="sparc"
3490     ;;
3491     tilegx|tile-gx)
3492         arch="tilegx"
3493     ;;
3494     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3495         arch="x86"
3496     ;;
3497 esac
3498
3499 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3500 enable $arch
3501
3502 # Add processor-specific flags
3503 if enabled aarch64; then
3504
3505     case $cpu in
3506         armv*)
3507             cpuflags="-march=$cpu"
3508         ;;
3509         *)
3510             cpuflags="-mcpu=$cpu"
3511         ;;
3512     esac
3513
3514 elif enabled alpha; then
3515
3516     cpuflags="-mcpu=$cpu"
3517
3518 elif enabled arm; then
3519
3520     check_arm_arch() {
3521         check_cpp_condition stddef.h \
3522             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3523             $cpuflags
3524     }
3525
3526     probe_arm_arch() {
3527         if   check_arm_arch 4;        then echo armv4
3528         elif check_arm_arch 4T;       then echo armv4t
3529         elif check_arm_arch 5;        then echo armv5
3530         elif check_arm_arch 5E;       then echo armv5e
3531         elif check_arm_arch 5T;       then echo armv5t
3532         elif check_arm_arch 5TE;      then echo armv5te
3533         elif check_arm_arch 5TEJ;     then echo armv5te
3534         elif check_arm_arch 6;        then echo armv6
3535         elif check_arm_arch 6J;       then echo armv6j
3536         elif check_arm_arch 6K;       then echo armv6k
3537         elif check_arm_arch 6Z;       then echo armv6z
3538         elif check_arm_arch 6ZK;      then echo armv6zk
3539         elif check_arm_arch 6T2;      then echo armv6t2
3540         elif check_arm_arch 7;        then echo armv7
3541         elif check_arm_arch 7A  7_A;  then echo armv7-a
3542         elif check_arm_arch 7S;       then echo armv7-a
3543         elif check_arm_arch 7R  7_R;  then echo armv7-r
3544         elif check_arm_arch 7M  7_M;  then echo armv7-m
3545         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3546         elif check_arm_arch 8A  8_A;  then echo armv8-a
3547         fi
3548     }
3549
3550     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3551
3552     case $cpu in
3553         armv*)
3554             cpuflags="-march=$cpu"
3555             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3556         ;;
3557         *)
3558             cpuflags="-mcpu=$cpu"
3559             case $cpu in
3560                 cortex-a*)                               subarch=armv7a  ;;
3561                 cortex-r*)                               subarch=armv7r  ;;
3562                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3563                 arm11*)                                  subarch=armv6   ;;
3564                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3565                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3566                 *)                             subarch=$(probe_arm_arch) ;;
3567             esac
3568         ;;
3569     esac
3570
3571     case "$subarch" in
3572         armv5t*)    enable fast_clz                ;;
3573         armv[6-8]*) enable fast_clz fast_unaligned ;;
3574     esac
3575
3576 elif enabled avr32; then
3577
3578     case $cpu in
3579         ap7[02]0[0-2])
3580             subarch="avr32_ap"
3581             cpuflags="-mpart=$cpu"
3582         ;;
3583         ap)
3584             subarch="avr32_ap"
3585             cpuflags="-march=$cpu"
3586         ;;
3587         uc3[ab]*)
3588             subarch="avr32_uc"
3589             cpuflags="-mcpu=$cpu"
3590         ;;
3591         uc)
3592             subarch="avr32_uc"
3593             cpuflags="-march=$cpu"
3594         ;;
3595     esac
3596
3597 elif enabled bfin; then
3598
3599     cpuflags="-mcpu=$cpu"
3600
3601 elif enabled mips; then
3602
3603     cpuflags="-march=$cpu"
3604
3605 elif enabled ppc; then
3606
3607     disable ldbrx
3608
3609     case $(tolower $cpu) in
3610         601|ppc601|powerpc601)
3611             cpuflags="-mcpu=601"
3612             disable altivec
3613         ;;
3614         603*|ppc603*|powerpc603*)
3615             cpuflags="-mcpu=603"
3616             disable altivec
3617         ;;
3618         604*|ppc604*|powerpc604*)
3619             cpuflags="-mcpu=604"
3620             disable altivec
3621         ;;
3622         g3|75*|ppc75*|powerpc75*)
3623             cpuflags="-mcpu=750"
3624             disable altivec
3625         ;;
3626         g4|745*|ppc745*|powerpc745*)
3627             cpuflags="-mcpu=7450"
3628             disable vsx
3629         ;;
3630         74*|ppc74*|powerpc74*)
3631             cpuflags="-mcpu=7400"
3632             disable vsx
3633         ;;
3634         g5|970|ppc970|powerpc970)
3635             cpuflags="-mcpu=970"
3636             disable vsx
3637         ;;
3638         power[3-6]*)
3639             cpuflags="-mcpu=$cpu"
3640             disable vsx
3641         ;;
3642         power[7-8]*)
3643             cpuflags="-mcpu=$cpu"
3644             enable ldbrx
3645         ;;
3646         cell)
3647             cpuflags="-mcpu=cell"
3648             enable ldbrx
3649             disable vsx
3650         ;;
3651         e500mc)
3652             cpuflags="-mcpu=e500mc"
3653             disable altivec
3654         ;;
3655         e500v2)
3656             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3657             disable altivec
3658             disable dcbzl
3659         ;;
3660         e500)
3661             cpuflags="-mcpu=8540 -mhard-float"
3662             disable altivec
3663             disable dcbzl
3664         ;;
3665     esac
3666
3667 elif enabled sparc; then
3668
3669     case $cpu in
3670         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3671             cpuflags="-mcpu=$cpu"
3672         ;;
3673         ultrasparc*|niagara[234])
3674             cpuflags="-mcpu=$cpu"
3675         ;;
3676     esac
3677
3678 elif enabled x86; then
3679
3680     case $cpu in
3681         i[345]86|pentium)
3682             cpuflags="-march=$cpu"
3683             disable i686
3684             disable mmx
3685         ;;
3686         # targets that do NOT support nopl and conditional mov (cmov)
3687         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3688             cpuflags="-march=$cpu"
3689             disable i686
3690         ;;
3691         # targets that do support nopl and conditional mov (cmov)
3692         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3693             cpuflags="-march=$cpu"
3694             enable i686
3695             enable fast_cmov
3696         ;;
3697         # targets that do support conditional mov but on which it's slow
3698         pentium4|pentium4m|prescott|nocona)
3699             cpuflags="-march=$cpu"
3700             enable i686
3701             disable fast_cmov
3702         ;;
3703     esac
3704
3705 fi
3706
3707 if [ "$cpu" != generic ]; then
3708     add_cflags  $cpuflags
3709     add_asflags $cpuflags
3710     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3711 fi
3712
3713 # compiler sanity check
3714 check_exec <<EOF
3715 int main(void){ return 0; }
3716 EOF
3717 if test "$?" != 0; then
3718     echo "$cc is unable to create an executable file."
3719     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3720         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3721         echo "Only do this if you know what cross compiling means."
3722     fi
3723     die "C compiler test failed."
3724 fi
3725
3726 add_cppflags -D_ISOC99_SOURCE
3727
3728 # some compilers silently accept -std=c11, so we also need to check that the
3729 # version macro is defined properly
3730 if test_cflags_cpp -std=c11 "__STDC_VERSION__ >= 201112L"; then
3731     add_cflags -std=c11
3732 else
3733     check_cflags -std=c99
3734 fi
3735
3736 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3737 #include <stdlib.h>
3738 EOF
3739 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3740 #include <stdlib.h>
3741 EOF
3742
3743 add_host_cppflags -D_ISOC99_SOURCE
3744 check_host_cflags -std=c99
3745 check_host_cflags -Wall
3746 check_host_cflags -O3
3747
3748 check_64bit(){
3749     arch32=$1
3750     arch64=$2
3751     expr=$3
3752     check_code cc "" "int test[2*($expr) - 1]" &&
3753         subarch=$arch64 || subarch=$arch32
3754 }
3755
3756 case "$arch" in
3757     aarch64|alpha|ia64)
3758         spic=$shared
3759     ;;
3760     mips)
3761         check_64bit mips mips64 '_MIPS_SIM > 1'
3762         spic=$shared
3763     ;;
3764     parisc)
3765         check_64bit parisc parisc64 'sizeof(void *) > 4'
3766         spic=$shared
3767     ;;
3768     ppc)
3769         check_64bit ppc ppc64 'sizeof(void *) > 4'
3770         spic=$shared
3771     ;;
3772     s390)
3773         check_64bit s390 s390x 'sizeof(void *) > 4'
3774         spic=$shared
3775     ;;
3776     sparc)
3777         check_64bit sparc sparc64 'sizeof(void *) > 4'
3778         spic=$shared
3779     ;;
3780     x86)
3781         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3782         if test "$subarch" = "x86_64"; then
3783             spic=$shared
3784         fi
3785     ;;
3786 esac
3787
3788 enable $subarch
3789 enabled spic && enable_weak pic
3790
3791 # OS specific
3792 case $target_os in
3793     aix)
3794         SHFLAGS=-shared
3795         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3796         enabled shared && add_ldflags -Wl,-brtl
3797         ;;
3798     android)
3799         disable symver
3800         enable section_data_rel_ro
3801         SLIB_INSTALL_NAME='$(SLIBNAME)'
3802         SLIB_INSTALL_LINKS=
3803         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3804         ;;
3805     haiku)
3806         prefix_default="/boot/common"
3807         network_extralibs="-lnetwork"
3808         host_libs=
3809         ;;
3810     sunos)
3811         SHFLAGS='-shared -Wl,-h,$$(@F)'
3812         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3813         network_extralibs="-lsocket -lnsl"
3814         # When using suncc to build, the Solaris linker will mark
3815         # an executable with each instruction set encountered by
3816         # the Solaris assembler.  As our libraries contain their own
3817         # guards for processor-specific code, instead suppress
3818         # generation of the HWCAPS ELF section on Solaris x86 only.
3819         enabled_all suncc x86 &&
3820             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3821             add_ldflags -Wl,-M,mapfile
3822         nm_default='nm -P -g'
3823         version_script='-M'
3824         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3825         ;;
3826     netbsd)
3827         disable symver
3828         oss_indev_extralibs="-lossaudio"
3829         oss_outdev_extralibs="-lossaudio"
3830         ;;
3831     openbsd|bitrig)
3832         disable symver
3833         SHFLAGS='-shared'
3834         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3835         SLIB_INSTALL_LINKS=
3836         oss_indev_extralibs="-lossaudio"
3837         oss_outdev_extralibs="-lossaudio"
3838         ;;
3839     dragonfly)
3840         disable symver
3841         ;;
3842     freebsd)
3843         ;;
3844     bsd/os)
3845         add_extralibs -lpoll -lgnugetopt
3846         ;;
3847     darwin)
3848         enabled ppc && add_asflags -force_cpusubtype_ALL
3849         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3850         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3851         add_ldflags -Wl,-dynamic,-search_paths_first
3852         SLIBSUF=".dylib"
3853         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3854         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3855         objformat="macho"
3856         enabled x86_64 && objformat="macho64"
3857         enabled_any pic shared ||
3858             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3859         check_header dispatch/dispatch.h &&
3860             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3861         ;;
3862     msys*)
3863         die "Native MSYS builds are discouraged, please use the MINGW environment."
3864         ;;
3865     mingw32*|mingw64*)
3866         if test $target_os = "mingw32ce"; then
3867             disable network
3868         else
3869             target_os=mingw32
3870         fi
3871         LIBTARGET=i386
3872         if enabled x86_64; then
3873             LIBTARGET="i386:x86-64"
3874         elif enabled arm; then
3875             LIBTARGET=arm-wince
3876         fi
3877         check_ldflags -Wl,--nxcompat
3878         check_ldflags -Wl,--dynamicbase
3879         shlibdir_default="$bindir_default"
3880         SLIBPREF=""
3881         SLIBSUF=".dll"
3882         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3883         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3884         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3885         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3886         SLIB_INSTALL_LINKS=
3887         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3888         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3889         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3890         objformat="win32"
3891         dlltool="${cross_prefix}dlltool"
3892         ranlib=:
3893         enable dos_paths
3894         ;;
3895     win32|win64)
3896         disable symver
3897         if enabled shared; then
3898             # Link to the import library instead of the normal static library
3899             # for shared libs.
3900             LD_LIB='%.lib'
3901             # Cannot build both shared and static libs with MSVC or icl.
3902             disable static
3903         fi
3904         shlibdir_default="$bindir_default"
3905         SLIBPREF=""
3906         SLIBSUF=".dll"
3907         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3908         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3909         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3910         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3911         SLIB_INSTALL_LINKS=
3912         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3913         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3914         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3915         objformat="win32"
3916         ranlib=:
3917         enable dos_paths
3918         ;;
3919     cygwin*)
3920         target_os=cygwin
3921         shlibdir_default="$bindir_default"
3922         SLIBPREF="cyg"
3923         SLIBSUF=".dll"
3924         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3925         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3926         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3927         SLIB_INSTALL_LINKS=
3928         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3929         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3930         objformat="win32"
3931         enable dos_paths
3932         ;;
3933     *-dos|freedos|opendos)
3934         network_extralibs="-lsocket"
3935         objformat="coff"
3936         enable dos_paths
3937         add_cppflags -U__STRICT_ANSI__
3938         ;;
3939     linux)
3940         enable dv1394
3941         enable section_data_rel_ro
3942         ;;
3943     irix*)
3944         target_os=irix
3945         ranlib="echo ignoring ranlib"
3946         ;;
3947     os/2*)
3948         ln_s="cp -f"
3949         objformat="aout"
3950         add_cppflags -D_GNU_SOURCE
3951         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3952         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3953         LIBSUF="_s.a"
3954         SLIBPREF=""
3955         SLIBSUF=".dll"
3956         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3957         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3958         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3959             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3960             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3961             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3962             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
3963         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3964             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3965         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3966         enable dos_paths
3967         ;;
3968     gnu/kfreebsd)
3969         add_cppflags -D_BSD_SOURCE
3970         ;;
3971     gnu)
3972         ;;
3973     qnx)
3974         add_cppflags -D_QNX_SOURCE
3975         network_extralibs="-lsocket"
3976         ;;
3977     symbian)
3978         SLIBSUF=".dll"
3979         enable dos_paths
3980         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3981         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3982         add_ldflags -Wl,--target1-abs,--no-undefined \
3983                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3984                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3985         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3986                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3987                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3988         ;;
3989     osf1)
3990         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3991         ;;
3992     minix)
3993         ;;
3994     plan9)
3995         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3996                      -D_REENTRANT_SOURCE        \
3997                      -D_RESEARCH_SOURCE         \
3998                      -DFD_SETSIZE=96            \
3999                      -DHAVE_SOCK_OPTS
4000         add_compat strtod.o strtod=avpriv_strtod
4001         network_extralibs='-lbsd'
4002         exeobjs=compat/plan9/main.o
4003         cp_f='cp'
4004         ;;
4005     none)
4006         ;;
4007     *)
4008         die "Unknown OS '$target_os'."
4009         ;;
4010 esac
4011
4012 # determine libc flavour
4013
4014 probe_libc(){
4015     pfx=$1
4016     pfx_no_=${pfx%_}
4017     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4018     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4019         eval ${pfx}libc_type=uclibc
4020         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4021     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4022         eval ${pfx}libc_type=glibc
4023         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4024     # MinGW headers can be installed on Cygwin, so check for newlib first.
4025     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4026         eval ${pfx}libc_type=newlib
4027         add_${pfx}cppflags -U__STRICT_ANSI__
4028     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4029     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4030         eval ${pfx}libc_type=mingw64
4031         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4032         eval test \$${pfx_no_}cc_type = "gcc" &&
4033             add_${pfx}cppflags -D__printf__=__gnu_printf__
4034     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4035          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4036         eval ${pfx}libc_type=mingw32
4037         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4038             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4039             die "ERROR: MinGW32 runtime version must be >= 3.15."
4040         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4041         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700__" &&
4042             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
4043         eval test \$${pfx_no_}cc_type = "gcc" &&
4044             add_${pfx}cppflags -D__printf__=__gnu_printf__
4045     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4046         eval ${pfx}libc_type=msvcrt
4047         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4048             if [ "$pfx" = host_ ]; then
4049                 add_host_cppflags -Dsnprintf=_snprintf
4050             else
4051                 add_compat strtod.o strtod=avpriv_strtod
4052                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4053                                              _snprintf=avpriv_snprintf  \
4054                                              vsnprintf=avpriv_vsnprintf
4055             fi
4056         fi
4057         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
4058         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4059         # 0x601 by default unless something else is set by the user.
4060         # This can easily lead to us detecting functions only present
4061         # in such new versions and producing binaries requiring windows 7.0.
4062         # Therefore explicitly set the default to XP unless the user has
4063         # set something else on the command line.
4064         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4065         # family. For these cases, configure is free to use any functions
4066         # found in the SDK headers by default. (Alternatively, we could force
4067         # _WIN32_WINNT to 0x0602 in that case.)
4068         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4069             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4070 #ifdef WINAPI_FAMILY
4071 #include <winapifamily.h>
4072 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4073 #error not desktop
4074 #endif
4075 #endif
4076 EOF
4077         if [ "$pfx" = "" ]; then
4078             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4079         fi
4080     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4081         eval ${pfx}libc_type=klibc
4082     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4083         eval ${pfx}libc_type=bionic
4084     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4085         eval ${pfx}libc_type=solaris
4086         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4087     else
4088         eval ${pfx}libc_type=default
4089         add_${pfx}cppflags -D_DEFAULT_SOURCE
4090     fi
4091 }
4092
4093 probe_libc
4094 test -n "$libc_type" && enable libc_$libc_type
4095 probe_libc host_
4096 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4097
4098 case $libc_type in
4099     bionic)
4100         add_compat strtod.o strtod=avpriv_strtod
4101         ;;
4102 esac
4103
4104 # hacks for compiler/libc/os combinations
4105
4106 if enabled_all tms470 libc_glibc; then
4107     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4108     add_cppflags -D__USER_LABEL_PREFIX__=
4109     add_cppflags -D__builtin_memset=memset
4110     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4111     add_cflags   -pds=48    # incompatible redefinition of macro
4112 fi
4113
4114 if enabled_all ccc libc_glibc; then
4115     add_ldflags -Wl,-z,now  # calls to libots crash without this
4116 fi
4117
4118 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4119     add_cppflags '-I\$(SRC_PATH)/compat/float'
4120
4121 esc(){
4122     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4123 }
4124
4125 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
4126
4127 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4128
4129 set_default $PATHS_LIST
4130 set_default nm
4131
4132 # we need to build at least one lib type
4133 if ! enabled_any static shared; then
4134     cat <<EOF
4135 At least one library type must be built.
4136 Specify --enable-static to build the static libraries or --enable-shared to
4137 build the shared libraries as well. To only build the shared libraries specify
4138 --disable-static in addition to --enable-shared.
4139 EOF
4140     exit 1
4141 fi
4142
4143 disabled optimizations || check_cflags -fomit-frame-pointer
4144
4145 enable_weak_pic() {
4146     disabled pic && return
4147     enable pic
4148     add_cppflags -DPIC
4149     case "$target_os" in
4150     mingw*|cygwin*)
4151         ;;
4152     *)
4153         add_cflags -fPIC
4154         ;;
4155     esac
4156     add_asflags  -fPIC
4157 }
4158
4159 enabled pic && enable_weak_pic
4160
4161 check_cc <<EOF || die "Symbol mangling check failed."
4162 int ff_extern;
4163 EOF
4164 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4165 extern_prefix=${sym%%ff_extern*}
4166
4167 check_cc <<EOF && enable_weak inline_asm
4168 void foo(void) { __asm__ volatile ("" ::); }
4169 EOF
4170
4171 _restrict=
4172 for restrict_keyword in restrict __restrict__ __restrict; do
4173     check_cc <<EOF && _restrict=$restrict_keyword && break
4174 void foo(char * $restrict_keyword p);
4175 EOF
4176 done
4177
4178 check_cc <<EOF && enable pragma_deprecated
4179 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4180 EOF
4181
4182 check_cc <<EOF && enable attribute_packed
4183 struct { int x; } __attribute__((packed)) x;
4184 EOF
4185
4186 check_cc <<EOF && enable attribute_may_alias
4187 union { int x; } __attribute__((may_alias)) x;
4188 EOF
4189
4190 check_cc <<EOF || die "endian test failed"
4191 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4192 EOF
4193 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4194
4195 check_gas() {
4196     log "check_gas using '$as' as AS"
4197     # :vararg is used on aarch64, arm and ppc altivec
4198     check_as <<EOF || return 1
4199 .macro m n, y:vararg=0
4200 \n: .int \y
4201 .endm
4202 m x
4203 EOF
4204     # .altmacro is only used in arm asm
4205     ! enabled arm || check_as <<EOF || return 1
4206 .altmacro
4207 EOF
4208     enable gnu_as
4209     return 0
4210 }
4211
4212 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4213     nogas=:
4214     enabled_any arm aarch64 && nogas=die
4215     enabled_all ppc altivec && nogas=warn
4216     as_noop=-v
4217
4218     case $as_type in
4219         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4220         gcc)  gaspp_as_type=gas ;;
4221         *)    gaspp_as_type=$as_type ;;
4222     esac
4223
4224     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4225
4226     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4227         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4228
4229     if ! check_gas ; then
4230         as=${gas:=$as}
4231         check_gas || \
4232             $nogas "GNU assembler not found, install/update gas-preprocessor"
4233     fi
4234
4235     check_as <<EOF && enable as_func
4236 .func test
4237 .endfunc
4238 EOF
4239 fi
4240
4241 check_inline_asm inline_asm_labels '"1:\n"'
4242
4243 if enabled aarch64; then
4244     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4245     # internal assembler in clang 3.3 does not support this instruction
4246     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4247     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4248
4249     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4250
4251 elif enabled alpha; then
4252
4253     check_cflags -mieee
4254
4255 elif enabled arm; then
4256
4257     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4258     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4259     enabled thumb && check_cflags -mthumb || check_cflags -marm
4260
4261     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4262         enable vfp_args
4263     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4264         enable vfp_args
4265     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4266         case "${cross_prefix:-$cc}" in
4267             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4268             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4269 __asm__ (".eabi_attribute 28, 1");
4270 int main(void) { return 0; }
4271 EOF
4272         esac
4273         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4274     fi
4275
4276     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4277     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4278     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4279     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4280     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4281     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4282
4283     [ $target_os = linux ] || [ $target_os = android ] ||
4284         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4285             $ARCH_EXT_LIST_ARM
4286
4287     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4288
4289     check_as <<EOF && enable as_dn_directive
4290 ra .dn d0.i16
4291 .unreq ra
4292 EOF
4293     check_as <<EOF && enable as_fpu_directive
4294 .fpu neon
4295 EOF
4296
4297     # llvm's integrated assembler supports .object_arch from llvm 3.5
4298     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4299 .object_arch armv4
4300 EOF
4301
4302     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4303
4304 elif enabled mips; then
4305
4306     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4307
4308     # make sure that only an instruction set is enabled
4309     disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4310
4311     if enabled mips64; then
4312         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4313             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4314                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4315     else
4316         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4317             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4318                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4319     fi
4320
4321 elif enabled parisc; then
4322
4323     if enabled gcc; then
4324         case $($cc -dumpversion) in
4325             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4326         esac
4327     fi
4328
4329 elif enabled ppc; then
4330
4331     enable local_aligned_8 local_aligned_16 local_aligned_32
4332
4333     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4334     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4335     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4336     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4337
4338     # AltiVec flags: The FSF version of GCC differs from the Apple version
4339     if enabled altivec; then
4340         check_cflags -maltivec -mabi=altivec &&
4341         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4342         check_cflags -faltivec
4343
4344         # check if our compiler supports Motorola AltiVec C API
4345         check_cc <<EOF || disable altivec
4346 $inc_altivec_h
4347 int main(void) {
4348     vector signed int v1 = (vector signed int) { 0 };
4349     vector signed int v2 = (vector signed int) { 1 };
4350     v1 = vec_add(v1, v2);
4351     return 0;
4352 }
4353 EOF
4354
4355         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4356     fi
4357
4358     if enabled vsx; then
4359         check_cflags -mvsx &&
4360         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4361     fi
4362
4363     if enabled power8; then
4364         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4365     fi
4366
4367 elif enabled x86; then
4368
4369     check_builtin rdtsc    intrin.h   "__rdtsc()"
4370     check_builtin mm_empty mmintrin.h "_mm_empty()"
4371
4372     enable local_aligned_8 local_aligned_16 local_aligned_32
4373
4374     # check whether EBP is available on x86
4375     # As 'i' is stored on the stack, this program will crash
4376     # if the base pointer is used to access it because the
4377     # base pointer is cleared in the inline assembly code.
4378     check_exec_crash <<EOF && enable ebp_available
4379 volatile int i=0;
4380 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4381 return i;
4382 EOF
4383
4384     # check whether EBX is available on x86
4385     check_inline_asm ebx_available '""::"b"(0)' &&
4386         check_inline_asm ebx_available '"":::"%ebx"'
4387
4388     # check whether xmm clobbers are supported
4389     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4390
4391     # check whether binutils is new enough to compile SSSE3/MMXEXT
4392     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4393     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4394
4395     if ! disabled_any asm mmx yasm; then
4396         if check_cmd $yasmexe --version; then
4397             enabled x86_64 && yasm_extra="-m amd64"
4398             yasm_debug="-g dwarf2"
4399         elif check_cmd nasm -v; then
4400             yasmexe=nasm
4401             yasm_debug="-g -F dwarf"
4402             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4403         fi
4404
4405         YASMFLAGS="-f $objformat $yasm_extra"
4406         enabled pic               && append YASMFLAGS "-DPIC"
4407         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4408         case "$objformat" in
4409             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4410         esac
4411
4412         check_yasm "movbe ecx, [5]" && enable yasm ||
4413             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4414         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4415         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4416         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4417         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4418         check_yasm "CPU amdnop" || disable cpunop
4419     fi
4420
4421     case "$cpu" in
4422         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4423             disable fast_clz
4424         ;;
4425     esac
4426
4427 fi
4428
4429 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4430
4431 check_ldflags -Wl,--as-needed
4432
4433 if check_func dlopen; then
4434     ldl=
4435 elif check_func dlopen -ldl; then
4436     ldl=-ldl
4437 fi
4438
4439 if ! disabled network; then
4440     check_func getaddrinfo $network_extralibs
4441     check_func inet_aton $network_extralibs
4442
4443     check_type netdb.h "struct addrinfo"
4444     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4445     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4446     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4447     check_type poll.h "struct pollfd"
4448     check_type netinet/sctp.h "struct sctp_event_subscribe"
4449     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4450     check_type netinet/in.h "struct sockaddr_in6"
4451     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4452     check_type "sys/types.h sys/socket.h" socklen_t
4453
4454     # Prefer arpa/inet.h over winsock2
4455     if check_header arpa/inet.h ; then
4456         check_func closesocket
4457     elif check_header winsock2.h ; then
4458         check_func_headers winsock2.h closesocket -lws2 &&
4459             network_extralibs="-lws2" ||
4460         { check_func_headers winsock2.h closesocket -lws2_32 &&
4461             network_extralibs="-lws2_32"; } || disable winsock2_h network
4462         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4463
4464         check_type ws2tcpip.h socklen_t
4465         check_type ws2tcpip.h "struct addrinfo"
4466         check_type ws2tcpip.h "struct group_source_req"
4467         check_type ws2tcpip.h "struct ip_mreq_source"
4468         check_type ws2tcpip.h "struct ipv6_mreq"
4469         check_type winsock2.h "struct pollfd"
4470         check_struct winsock2.h "struct sockaddr" sa_len
4471         check_type ws2tcpip.h "struct sockaddr_in6"
4472         check_type ws2tcpip.h "struct sockaddr_storage"
4473     else
4474         disable network
4475     fi
4476 fi
4477
4478 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4479 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4480 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4481 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4482
4483 case "$custom_allocator" in
4484     jemalloc)
4485         # jemalloc by default does not use a prefix
4486         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4487     ;;
4488     tcmalloc)
4489         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
4490         malloc_prefix=tc_
4491     ;;
4492 esac
4493
4494 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4495 check_func  ${malloc_prefix}memalign            && enable memalign
4496 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4497
4498 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4499     check_func_headers time.h clock_gettime ||
4500         { check_lib time.h clock_gettime -lrt && LIBRT="-lrt"; }
4501
4502 check_func  fcntl
4503 check_func  fork
4504 check_func  gethrtime
4505 check_func  getopt
4506 check_func  getrusage
4507 check_func  gettimeofday
4508 check_func  gmtime_r
4509 check_func  isatty
4510 check_func  localtime_r
4511 check_func  mach_absolute_time
4512 check_func  mkstemp
4513 check_func  mmap
4514 check_func  mprotect
4515 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4516 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt; }
4517 check_func  sched_getaffinity
4518 check_func  setrlimit
4519 check_func  strerror_r
4520 check_func  sysconf
4521 check_func  sysctl
4522 check_func  usleep
4523
4524 check_func_headers io.h setmode
4525 check_func_headers stdlib.h getenv
4526
4527 check_func_headers windows.h CoTaskMemFree -lole32
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 direct.h
4539 check_header dlfcn.h
4540 check_header d3d11.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 vdpau/vdpau.h
4556 check_header vdpau/vdpau_x11.h
4557 check_header VideoDecodeAcceleration/VDADecoder.h
4558 check_header windows.h
4559 check_header X11/extensions/XvMClib.h
4560
4561 # it seems there are versions of clang in some distros that try to use the
4562 # gcc headers, which explodes for stdatomic
4563 # so we also check that atomics actually work here
4564 check_builtin stdatomic_h stdatomic.h "atomic_int foo; atomic_store(&foo, 0)"
4565
4566 check_lib "windows.h shellapi.h" CommandLineToArgvW   -lshell32
4567 check_lib "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
4568 check_lib "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
4569
4570 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4571
4572 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4573 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4574 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4575
4576 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
4577 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
4578 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
4579 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
4580 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
4581
4582 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
4583
4584 if ! disabled w32threads && ! enabled pthreads; then
4585     check_func_headers "windows.h process.h" _beginthreadex &&
4586         enable w32threads || disable w32threads
4587 fi
4588
4589 # check for some common methods of building with pthread support
4590 # do this before the optional library checks as some of them require pthreads
4591 if ! disabled pthreads && ! enabled w32threads; then
4592     enable pthreads
4593     if check_func pthread_join -pthread; then
4594         add_cflags -pthread
4595         add_extralibs -pthread
4596     elif check_func pthread_join -pthreads; then
4597         add_cflags -pthreads
4598         add_extralibs -pthreads
4599     elif check_func pthread_join -lpthreadGC2; then
4600         add_extralibs -lpthreadGC2
4601     elif check_lib pthread.h pthread_join -lpthread; then
4602         :
4603     elif ! check_func pthread_join; then
4604         disable pthreads
4605     fi
4606 fi
4607
4608 enabled pthreads &&
4609     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
4610
4611 disabled  zlib || check_lib  zlib.h      zlibVersion -lz   || disable  zlib
4612 disabled bzlib || check_lib bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4613
4614 check_lib math.h sin -lm && LIBM="-lm"
4615
4616 atan2f_args=2
4617 ldexpf_args=2
4618 powf_args=2
4619
4620 for func in $MATH_FUNCS; do
4621     eval check_mathfunc $func \${${func}_args:-1}
4622 done
4623
4624 # these are off by default, so fail if requested and not available
4625 enabled avisynth          && { check_lib "avisynth/avisynth_c.h windows.h" LoadLibrary ||
4626                                check_lib "avxsynth/avxsynth_c.h dlfcn.h" dlopen -ldl   ||
4627                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4628 enabled cuda              && check_lib cuda.h cuInit -lcuda
4629 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4630 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4631 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4632 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4633 enabled libfaac           && require libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4634 enabled libfdk_aac        && require_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4635 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4636 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4637 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4638                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4639                                done || die "ERROR: libgsm not found"; }
4640 enabled libhdcd           && require_pkg_config libhdcd "hdcd/hdcd_simple.h" hdcd_new
4641 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4642 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
4643 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
4644 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4645 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
4646 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4647 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4648 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4649 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
4650 enabled libopenjpeg       && { check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4651                                require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; }
4652 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4653 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4654 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4655 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4656 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
4657 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
4658 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4659 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4660 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4661 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4662 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4663 enabled libvpx            && require_pkg_config "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version && {
4664     enabled libvpx_vp8_decoder && {
4665         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
4666             disable libvpx_vp8_decoder;
4667     }
4668     enabled libvpx_vp8_encoder && {
4669         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
4670             disable libvpx_vp8_encoder;
4671     }
4672     enabled libvpx_vp9_decoder && {
4673         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
4674             disable libvpx_vp9_decoder;
4675     }
4676     enabled libvpx_vp9_encoder && {
4677         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
4678             disable libvpx_vp9_encoder;
4679     }
4680     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
4681         die "libvpx enabled but no supported decoders found"
4682     fi
4683 }
4684 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4685 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4686 enabled libx264           && require_pkg_config x264 "stdint.h x264.h" x264_encoder_encode &&
4687                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4688                                die "ERROR: libx264 version must be >= 0.118."; } &&
4689                              { check_cpp_condition x264.h "X264_MPEG2" &&
4690                                enable libx262; }
4691 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
4692                              { check_cpp_condition x265.h "X265_BUILD >= 57" ||
4693                                die "ERROR: libx265 version must be >= 57."; }
4694 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
4695 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4696 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4697                                 { ! enabled cross_compile && {
4698                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
4699                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
4700                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
4701                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
4702                                die "ERROR: mmal not found"; }
4703 enabled mmal && check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"
4704 enabled omx_rpi && enable omx
4705 enabled omx               && { check_header OMX_Core.h ||
4706                                 { ! enabled cross_compile && enabled omx_rpi && {
4707                                     add_cflags -isystem/opt/vc/include/IL ; }
4708                                 check_header OMX_Core.h ; } ||
4709                                die "ERROR: OpenMAX IL headers not found"; }
4710 enabled openssl           && { { check_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
4711                                  check_pkg_config openssl openssl/ssl.h SSL_library_init; } && {
4712                                add_cflags $openssl_cflags && add_extralibs $openssl_libs; }||
4713                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4714                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4715                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4716                                die "ERROR: openssl not found"; }
4717
4718 if enabled gnutls; then
4719     { check_lib gmp.h mpz_export -lgmp && enable gmp; } ||
4720     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4721 fi
4722
4723 # libdc1394 check
4724 if enabled libdc1394; then
4725     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
4726         enable libdc1394_2; } ||
4727     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4728         enable libdc1394_1; } ||
4729     die "ERROR: No version of libdc1394 found "
4730 fi
4731
4732 if enabled nvenc; then
4733     check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."
4734     check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6" ||
4735         die "ERROR: NVENC API version 5 or older is not supported"
4736 fi
4737
4738 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4739     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4740     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4741     enable sdl
4742 fi
4743
4744 ! disabled pod2man   && check_cmd pod2man --help     && enable pod2man   || disable pod2man
4745 ! disabled texi2html && check_cmd texi2html -version && enable texi2html || disable texi2html
4746
4747 check_header linux/fb.h
4748 check_header linux/videodev2.h
4749 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4750
4751 check_header AVFoundation/AVFoundation.h &&
4752     check_objcflags -fobjc-arc &&
4753     add_extralibs -framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia ||
4754     disable AVFoundation_AVFoundation_h
4755
4756 check_header sys/videoio.h
4757
4758 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4759 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4760 # w32api 3.12 had it defined wrong
4761 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4762
4763 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4764 { check_header dev/bktr/ioctl_meteor.h &&
4765   check_header dev/bktr/ioctl_bt848.h; } ||
4766 { check_header machine/ioctl_meteor.h &&
4767   check_header machine/ioctl_bt848.h; } ||
4768 { check_header dev/video/meteor/ioctl_meteor.h &&
4769   check_header dev/video/bktr/ioctl_bt848.h; } ||
4770 check_header dev/ic/bt8xx.h
4771
4772 check_header sndio.h
4773 check_header sys/soundcard.h
4774 check_header soundcard.h
4775
4776 enabled_any alsa_indev alsa_outdev &&
4777     check_lib alsa/asoundlib.h snd_pcm_htimestamp -lasound
4778
4779 enabled jack_indev && check_lib jack/jack.h jack_client_open -ljack &&
4780     check_func jack_port_get_latency_range -ljack
4781
4782 enabled_any sndio_indev sndio_outdev && check_lib sndio.h sio_open -lsndio
4783
4784 if enabled libcdio; then
4785     check_lib "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4786     check_lib "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4787     die "ERROR: No usable libcdio/cdparanoia found"
4788 fi
4789
4790 if enabled libxcb; then
4791     check_pkg_config xcb-shape xcb/shape.h xcb_shape_rectangles || {
4792         enabled libxcb && die "ERROR: libxcb not found";
4793     } && enable libxcb
4794
4795     disabled libxcb_shm ||
4796         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
4797             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
4798         } && check_header sys/shm.h && enable libxcb_shm
4799
4800     disabled libxcb_xfixes ||
4801         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
4802             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
4803         } && enable libxcb_xfixes
4804
4805     add_cflags "$xcb_shape_cflags $xcb_event_cflags $xcb_shm_cflags $xcb_xfixes_cflags"
4806     add_extralibs "$xcb_shape_libs $xcb_event_libs $xcb_shm_libs $xcb_xfixes_libs"
4807 fi
4808