configure: Add missing asyncts filter, movie filter, and output example deps
[libav.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken Libav."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --quiet                  Suppress showing informative output
67   --list-decoders          show all available decoders
68   --list-encoders          show all available encoders
69   --list-hwaccels          show all available hardware accelerators
70   --list-demuxers          show all available demuxers
71   --list-muxers            show all available muxers
72   --list-parsers           show all available parsers
73   --list-protocols         show all available protocols
74   --list-bsfs              show all available bitstream filters
75   --list-indevs            show all available input devices
76   --list-outdevs           show all available output devices
77   --list-filters           show all available filters
78
79 Standard options:
80   --logfile=FILE           log tests and output to FILE [config.log]
81   --disable-logging        do not log configure debug information
82   --prefix=PREFIX          install in PREFIX [$prefix_default]
83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
84   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
86   --libdir=DIR             install libs in DIR [PREFIX/lib]
87   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
88   --incdir=DIR             install includes in DIR [PREFIX/include]
89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
90   --enable-rpath           use rpath when linking programs (USE WITH CARE)
91
92 Licensing options:
93   --enable-gpl             allow use of GPL code, the resulting libs
94                            and binaries will be under GPL [no]
95   --enable-version3        upgrade (L)GPL to version 3 [no]
96   --enable-nonfree         allow use of nonfree code, the resulting libs
97                            and binaries will be unredistributable [no]
98
99 Configuration options:
100   --disable-static         do not build static libraries [no]
101   --enable-shared          build shared libraries [no]
102   --enable-small           optimize for size instead of speed
103   --enable-runtime-cpudetect detect CPU capabilities at runtime (bigger binary)
104   --enable-gray            enable full grayscale support (slower color)
105   --disable-swscale-alpha  disable alpha channel support in swscale
106   --disable-all            disable building components, libraries and programs
107
108 Program options:
109   --disable-programs       do not build command line programs
110   --disable-avconv         disable avconv build
111   --disable-avplay         disable avplay build
112   --disable-avprobe        disable avprobe build
113   --disable-avserver       deprecated, does nothing
114
115 Component options:
116   --disable-doc            do not build documentation
117   --disable-pod2man        do not build manual pages
118   --disable-texi2html      do not build HTML documentation
119   --disable-avdevice       disable libavdevice build
120   --disable-avcodec        disable libavcodec build
121   --disable-avformat       disable libavformat build
122   --disable-avutil         disable libavutil build
123   --disable-swscale        disable libswscale build
124   --disable-avfilter       disable video filter support [no]
125   --disable-avresample     disable libavresample build [no]
126   --disable-pthreads       disable pthreads [auto]
127   --disable-w32threads     disable Win32 threads [auto]
128   --disable-network        disable network support [no]
129   --disable-dct            disable DCT code
130   --disable-error-resilience disable error resilience code
131   --disable-lsp            disable LSP code
132   --disable-lzo            disable LZO decoder code
133   --disable-mdct           disable MDCT code
134   --disable-rdft           disable RDFT code
135   --disable-fft            disable FFT code
136   --disable-faan           disable floating point AAN (I)DCT code
137
138 Individual component options:
139   --disable-everything     disable all components listed below
140   --disable-encoder=NAME   disable encoder NAME
141   --enable-encoder=NAME    enable encoder NAME
142   --disable-encoders       disable all encoders
143   --disable-decoder=NAME   disable decoder NAME
144   --enable-decoder=NAME    enable decoder NAME
145   --disable-decoders       disable all decoders
146   --disable-hwaccel=NAME   disable hwaccel NAME
147   --enable-hwaccel=NAME    enable hwaccel NAME
148   --disable-hwaccels       disable all hwaccels
149   --disable-muxer=NAME     disable muxer NAME
150   --enable-muxer=NAME      enable muxer NAME
151   --disable-muxers         disable all muxers
152   --disable-demuxer=NAME   disable demuxer NAME
153   --enable-demuxer=NAME    enable demuxer NAME
154   --disable-demuxers       disable all demuxers
155   --enable-parser=NAME     enable parser NAME
156   --disable-parser=NAME    disable parser NAME
157   --disable-parsers        disable all parsers
158   --enable-bsf=NAME        enable bitstream filter NAME
159   --disable-bsf=NAME       disable bitstream filter NAME
160   --disable-bsfs           disable all bitstream filters
161   --enable-protocol=NAME   enable protocol NAME
162   --disable-protocol=NAME  disable protocol NAME
163   --disable-protocols      disable all protocols
164   --enable-indev=NAME      enable input device NAME
165   --disable-indev=NAME     disable input device NAME
166   --disable-indevs         disable input devices
167   --enable-outdev=NAME     enable output device NAME
168   --disable-outdev=NAME    disable output device NAME
169   --disable-outdevs        disable output devices
170   --disable-devices        disable all devices
171   --enable-filter=NAME     enable filter NAME
172   --disable-filter=NAME    disable filter NAME
173   --disable-filters        disable all filters
174
175 External library support:
176
177   Using any of the following switches will allow Libav to link to the
178   corresponding external library. All the components depending on that library
179   will become enabled, if all their other dependencies are met and they are not
180   explicitly disabled. E.g. --enable-libwavpack will enable linking to
181   libwavpack and allow the libwavpack encoder to be built, unless it is
182   specifically disabled with --disable-encoder=libwavpack.
183
184   Note that only the system libraries are auto-detected. All the other external
185   libraries must be explicitly enabled.
186
187   Also note that the following help text describes the purpose of the libraries
188   themselves, not all their features will necessarily be usable by Libav.
189
190   --enable-avisynth          video frameserver
191   --enable-bzlib             bzip2 compression [autodetect]
192   --enable-frei0r            video filtering plugins
193   --enable-gnutls            crypto
194   --enable-libbs2b           Bauer stereophonic-to-binaural DSP
195   --enable-libcdio           audio CD input
196   --enable-libdc1394         IEEE 1394/Firewire camera input
197   --enable-libdcadec         DCA audio decoding
198   --enable-libfaac           AAC audio encoding
199   --enable-libfdk-aac        AAC audio encoding/decoding
200   --enable-libfontconfig     font configuration and management
201   --enable-libfreetype       font rendering
202   --enable-libgsm            GSM audio encoding/decoding
203   --enable-libhdcd           HDCD decoding filter
204   --enable-libilbc           ILBC audio encoding/decoding
205   --enable-libkvazaar        HEVC video encoding
206   --enable-libmp3lame        MP3 audio encoding
207   --enable-libopencore-amrnb AMR-NB audio encoding/decoding
208   --enable-libopencore-amrwb AMR-WB audio decoding
209   --enable-libopencv         computer vision
210   --enable-libopenh264       H.264 video encoding/decoding
211   --enable-libopenjpeg       JPEG 2000 image encoding/decoding
212   --enable-libopus           Opus audio encoding/decoding
213   --enable-libpulse          Pulseaudio sound server
214   --enable-librtmp           RTMP streaming
215   --enable-libschroedinger   Dirac video encoding/decoding
216   --enable-libsnappy         snappy compression
217   --enable-libspeex          Speex audio encoding/decoding
218   --enable-libtheora         Theora video encoding/decoding
219   --enable-libtwolame        MP2 audio encoding
220   --enable-libvo-aacenc      AAC audio encoding
221   --enable-libvo-amrwbenc    AMR-WB audio encoding
222   --enable-libvorbis         Vorbis audio encoding/decoding
223   --enable-libvpx            VP* video encoding/decoding
224   --enable-libwavpack        Wavpack audio encoding/decoding
225   --enable-libwebp           WebP image encoding/decoding
226   --enable-libx264           H.264 video encoding
227   --enable-libx265           HEVC video encoding
228   --enable-libxavs           Chinese AVS video encoding
229   --enable-libxcb            X window system protocol communication
230   --enable-libxcb-shm        X11 shm communication [auto]
231   --enable-libxcb-xfixes     X11 mouse rendering [auto]
232   --enable-libxvid           MPEG-4 ASP video encoding
233   --enable-openssl           crypto
234   --enable-zlib              compression [autodetect]
235
236   The following libraries provide various hardware acceleration features:
237   --enable-cuda    Nvidia CUDA (dynamically linked)
238   --enable-d3d11va Microsoft Direct3D 11 video acceleration [auto]
239   --enable-dxva2   Microsoft DirectX 9 video acceleration [auto]
240   --enable-libmfx  Intel MediaSDK (AKA Quick Sync Video)
241   --enable-libnpp  Nvidia CUDA processing
242   --enable-mmal    Broadcom Multi-Media Abstraction Layer (Raspberry Pi)
243   --enable-nvenc   Nvidia video encoding
244   --enable-omx     OpenMAX IL
245   --enable-omx-rpi OpenMAX IL for Raspberry Pi
246   --enable-vaapi   Video Acceleration API (mainly Unix/Intel)
247   --enable-vda     Apple Video Decode Acceleration [auto]
248   --enable-vdpau   Nvidia Video Decode and Presentation API for Unix [auto]
249
250 Toolchain options:
251   --arch=ARCH              select architecture [$arch]
252   --cpu=CPU                select the minimum required CPU (affects
253                            instruction selection, may crash on older CPUs)
254   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
255   --enable-cross-compile   assume a cross-compiler is used
256   --sysroot=PATH           root of cross-build tree
257   --sysinclude=PATH        location of cross-build system headers
258   --target-os=OS           compiler targets OS [$target_os]
259   --target-exec=CMD        command to run executables on target
260   --target-path=DIR        path to view of build directory on target
261   --target-samples=DIR     path to samples directory on target
262   --toolchain=NAME         set tool defaults according to NAME
263   --nm=NM                  use nm tool
264   --ar=AR                  use archive tool AR [$ar_default]
265   --as=AS                  use assembler AS [$as_default]
266   --cc=CC                  use C compiler CC [$cc_default]
267   --objcc=OCC              use ObjC compiler OCC [$cc_default]
268   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
269   --ld=LD                  use linker LD
270   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
271   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
272   --host-cc=HOSTCC         use host C compiler HOSTCC
273   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
274   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
275   --host-ld=HOSTLD         use host linker HOSTLD
276   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
277   --host-libs=HLIBS        use libs HLIBS when linking for host
278   --host-os=OS             compiler host OS [$target_os]
279   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
280   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
281   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
282   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
283   --extra-libs=ELIBS       add ELIBS [$ELIBS]
284   --extra-version=STRING   version string suffix []
285   --optflags=OPTFLAGS      override optimization-related compiler flags
286   --build-suffix=SUFFIX    library name suffix []
287   --enable-pic             build position-independent code
288   --enable-thumb           compile for Thumb instruction set
289   --enable-lto             use link-time optimization
290   --env="ENV=override"     override the environment variables
291
292 Advanced options (experts only):
293   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
294   --custom-allocator=NAME  use a supported custom allocator
295   --disable-symver         disable symbol versioning
296   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
297   --disable-safe-bitstream-reader
298                            disable buffer boundary checking in bitreaders
299                            (faster, but may crash)
300   --enable-sram            allow use of on-chip SRAM
301
302 Optimization options (experts only):
303   --disable-asm            disable all assembly optimizations
304   --disable-altivec        disable AltiVec optimizations
305   --disable-vsx            disable VSX optimizations
306   --disable-power8         disable POWER8 optimizations
307   --disable-amd3dnow       disable 3DNow! optimizations
308   --disable-amd3dnowext    disable 3DNow! extended optimizations
309   --disable-mmx            disable MMX optimizations
310   --disable-mmxext         disable MMXEXT optimizations
311   --disable-sse            disable SSE optimizations
312   --disable-sse2           disable SSE2 optimizations
313   --disable-sse3           disable SSE3 optimizations
314   --disable-ssse3          disable SSSE3 optimizations
315   --disable-sse4           disable SSE4 optimizations
316   --disable-sse42          disable SSE4.2 optimizations
317   --disable-avx            disable AVX optimizations
318   --disable-xop            disable XOP optimizations
319   --disable-fma3           disable FMA3 optimizations
320   --disable-fma4           disable FMA4 optimizations
321   --disable-avx2           disable AVX2 optimizations
322   --disable-armv5te        disable armv5te optimizations
323   --disable-armv6          disable armv6 optimizations
324   --disable-armv6t2        disable armv6t2 optimizations
325   --disable-vfp            disable VFP optimizations
326   --disable-neon           disable NEON optimizations
327   --disable-inline-asm     disable use of inline assembly
328   --disable-yasm           disable use of nasm/yasm assembly
329
330 Developer options (useful when working on Libav itself):
331   --disable-debug          disable debugging symbols
332   --enable-debug=LEVEL     set the debug level [$debuglevel]
333   --disable-optimizations  disable compiler optimizations
334   --enable-extra-warnings  enable more compiler warnings
335   --samples=PATH           location of test samples for FATE, if not set use
336                            \$LIBAV_SAMPLES at make invocation time.
337   --enable-neon-clobber-test check NEON registers for clobbering (should be
338                            used only for debugging purposes)
339   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
340                            should be used only for debugging purposes)
341   --enable-random          randomly enable/disable components
342   --disable-random
343   --enable-random=LIST     randomly enable/disable specific components or
344   --disable-random=LIST    component groups. LIST is a comma-separated list
345                            of NAME[:PROB] entries where NAME is a component
346                            (group) and PROB the probability associated with
347                            NAME (default 0.5).
348   --random-seed=VALUE      seed value for --enable/disable-random
349   --disable-valgrind-backtrace do not print a backtrace under Valgrind
350                            (only applies to --disable-optimizations builds)
351
352 NOTE: Object files are built at the place where configure is launched.
353 EOF
354   exit 0
355 }
356
357 quotes='""'
358
359 log(){
360     echo "$@" >> $logfile
361 }
362
363 log_file(){
364     log BEGIN $1
365     i=1
366     while read line; do
367         printf '%5s   %s\n' "${i}" "${line}"
368         i=$(($i+1))
369     done < $1 >> $logfile
370     log END $1
371 }
372
373 echolog(){
374     log "$@"
375     echo "$@"
376 }
377
378 warn(){
379     log "WARNING: $*"
380     WARNINGS="${WARNINGS}WARNING: $*\n"
381 }
382
383 die(){
384     echolog "$@"
385     cat <<EOF
386
387 If you think configure made a mistake, make sure you are using the latest
388 version from Git.  If the latest version fails, report the problem to the
389 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
390 EOF
391     if disabled logging; then
392         cat <<EOF
393 Rerun configure with logging enabled (do not use --disable-logging), and
394 include the log this produces with your report.
395 EOF
396     else
397         cat <<EOF
398 Include the log file "$logfile" produced by configure as this will help
399 solving the problem.
400 EOF
401     fi
402     exit 1
403 }
404
405 # Avoid locale weirdness, besides we really just want to translate ASCII.
406 toupper(){
407     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
408 }
409
410 tolower(){
411     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
412 }
413
414 c_escape(){
415     echo "$*" | sed 's/["\\]/\\\0/g'
416 }
417
418 sh_quote(){
419     v=$(echo "$1" | sed "s/'/'\\\\''/g")
420     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
421     echo "$v"
422 }
423
424 cleanws(){
425     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
426 }
427
428 filter(){
429     pat=$1
430     shift
431     for v; do
432         eval "case $v in $pat) 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 asyncts_filter_deps="avresample"
2430 blackframe_filter_deps="gpl"
2431 boxblur_filter_deps="gpl"
2432 bs2b_filter_deps="libbs2b"
2433 cropdetect_filter_deps="gpl"
2434 deinterlace_qsv_filter_deps="libmfx"
2435 delogo_filter_deps="gpl"
2436 drawtext_filter_deps="libfreetype"
2437 frei0r_filter_deps="frei0r dlopen"
2438 frei0r_filter_extralibs='$ldl'
2439 frei0r_src_filter_deps="frei0r dlopen"
2440 frei0r_src_filter_extralibs='$ldl'
2441 hdcd_filter_deps="libhdcd"
2442 hqdn3d_filter_deps="gpl"
2443 interlace_filter_deps="gpl"
2444 movie_filter_deps="avcodec avformat"
2445 ocv_filter_deps="libopencv"
2446 resample_filter_deps="avresample"
2447 scale_filter_deps="swscale"
2448 scale_qsv_filter_deps="libmfx"
2449 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2450
2451 # examples
2452 decode_audio_example_deps="avcodec avutil"
2453 decode_video_example_deps="avcodec avutil"
2454 encode_audio_example_deps="avcodec avutil"
2455 encode_video_example_deps="avcodec avutil"
2456 filter_audio_example_deps="avfilter avutil"
2457 metadata_example_deps="avformat avutil"
2458 output_example_deps="avcodec avformat avresample avutil swscale"
2459 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
2460 transcode_aac_example_deps="avcodec avformat avresample"
2461
2462 # libraries, in linking order
2463 avcodec_deps="avutil"
2464 avdevice_deps="avformat avcodec avutil"
2465 avfilter_deps="avutil"
2466 avformat_deps="avcodec avutil"
2467 avresample_deps="avutil"
2468 swscale_deps="avutil"
2469
2470 # programs
2471 avconv_deps="avcodec avfilter avformat avresample swscale"
2472 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2473                fps_filter null_filter resample_filter scale_filter
2474                trim_filter"
2475 avplay_deps="avcodec avfilter avformat avresample sdl"
2476 avplay_libs='$sdl_libs'
2477 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2478 avprobe_deps="avcodec avformat"
2479
2480 # documentation
2481 pod2man_deps="doc"
2482 texi2html_deps="doc"
2483
2484 # default parameters
2485
2486 logfile="config.log"
2487
2488 # installation paths
2489 prefix_default="/usr/local"
2490 bindir_default='${prefix}/bin'
2491 datadir_default='${prefix}/share/avconv'
2492 docdir_default='${prefix}/share/doc/libav'
2493 incdir_default='${prefix}/include'
2494 libdir_default='${prefix}/lib'
2495 mandir_default='${prefix}/share/man'
2496 shlibdir_default="$libdir_default"
2497
2498 # toolchain
2499 ar_default="ar"
2500 cc_default="gcc"
2501 host_cc_default="gcc"
2502 cp_f="cp -f"
2503 ln_s="ln -s -f"
2504 nm_default="nm -g"
2505 objformat="elf"
2506 pkg_config_default=pkg-config
2507 ranlib="ranlib"
2508 strip="strip"
2509 version_script='--version-script'
2510 yasmexe="yasm"
2511
2512 # machine
2513 arch_default=$(uname -m)
2514 cpu="generic"
2515 intrinsics="none"
2516
2517 # OS
2518 target_os_default=$(tolower $(uname -s))
2519 host_os=$target_os_default
2520
2521 # configurable options
2522 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2523
2524 enable asm
2525 enable debug
2526 enable doc
2527 enable faan faandct faanidct
2528 enable optimizations
2529 enable safe_bitstream_reader
2530 enable static
2531 enable swscale_alpha
2532 enable valgrind_backtrace
2533
2534 # By default, enable only those hwaccels that have no external dependencies.
2535 enable d3d11va dxva2 vda vdpau
2536
2537 # build settings
2538 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2539 LIBPREF="lib"
2540 LIBSUF=".a"
2541 FULLNAME='$(NAME)$(BUILDSUF)'
2542 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2543 SLIBPREF="lib"
2544 SLIBSUF=".so"
2545 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2546 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2547 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2548 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2549 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2550 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2551 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2552
2553 asflags_filter=echo
2554 cflags_filter=echo
2555 ldflags_filter=echo
2556
2557 AS_C='-c'
2558 AS_O='-o $@'
2559 CC_C='-c'
2560 CC_E='-E -o $@'
2561 CC_O='-o $@'
2562 OBJCC_C='-c'
2563 OBJCC_E='-E -o $@'
2564 OBJCC_O='-o $@'
2565 LD_O='-o $@'
2566 LD_LIB='-l%'
2567 LD_PATH='-L'
2568 HOSTCC_C='-c'
2569 HOSTCC_E='-E -o $@'
2570 HOSTCC_O='-o $@'
2571 HOSTLD_O='-o $@'
2572
2573 host_libs='-lm'
2574 host_cflags_filter=echo
2575 host_ldflags_filter=echo
2576
2577 target_path='$(CURDIR)'
2578
2579 # since the object filename is not given with the -MM flag, the compiler
2580 # is only able to print the basename, and we must add the path ourselves
2581 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2582 DEPFLAGS='-MM'
2583
2584 # find source path
2585 if test -f configure; then
2586     source_path=.
2587 else
2588     source_path=$(cd $(dirname "$0"); pwd)
2589     echo "$source_path" | grep -q '[[:blank:]]' &&
2590         die "Out of tree builds are impossible with whitespace in source path."
2591     test -e "$source_path/config.h" &&
2592         die "Out of tree builds are impossible with config.h in source dir."
2593 fi
2594
2595 for v in "$@"; do
2596     r=${v#*=}
2597     l=${v%"$r"}
2598     r=$(sh_quote "$r")
2599     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2600 done
2601
2602 find_things(){
2603     thing=$1
2604     pattern=$2
2605     file=$source_path/$3
2606     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2607 }
2608
2609 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2610 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2611 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2612 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2613 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2614 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2615 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2616 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2617 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2618
2619 find_things_extern(){
2620     thing=$1
2621     pattern=$2
2622     file=$source_path/$3
2623     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2624 }
2625
2626 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2627 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2628
2629 ALL_COMPONENTS="
2630     $BSF_LIST
2631     $DECODER_LIST
2632     $DEMUXER_LIST
2633     $ENCODER_LIST
2634     $FILTER_LIST
2635     $HWACCEL_LIST
2636     $INDEV_LIST
2637     $MUXER_LIST
2638     $OUTDEV_LIST
2639     $PARSER_LIST
2640     $PROTOCOL_LIST
2641 "
2642
2643 for n in $COMPONENT_LIST; do
2644     v=$(toupper ${n%s})_LIST
2645     eval enable \$$v
2646     eval ${n}_if_any="\$$v"
2647 done
2648
2649 enable $ARCH_EXT_LIST
2650
2651 die_unknown(){
2652     echo "Unknown option \"$1\"."
2653     echo "See $0 --help for available options."
2654     exit 1
2655 }
2656
2657 print_3_columns() {
2658     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2659 }
2660
2661 show_list() {
2662     suffix=_$1
2663     shift
2664     echo $* | sed s/$suffix//g | print_3_columns
2665     exit 0
2666 }
2667
2668 rand_list(){
2669     IFS=', '
2670     set -- $*
2671     unset IFS
2672     for thing; do
2673         comp=${thing%:*}
2674         prob=${thing#$comp}
2675         prob=${prob#:}
2676         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2677         echo "prob ${prob:-0.5}"
2678         printf '%s\n' $comp
2679     done
2680 }
2681
2682 do_random(){
2683     action=$1
2684     shift
2685     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2686     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2687 }
2688
2689 for opt do
2690     optval="${opt#*=}"
2691     case "$opt" in
2692         --extra-ldflags=*)
2693             add_ldflags $optval
2694         ;;
2695         --extra-ldexeflags=*)
2696             add_ldexeflags $optval
2697         ;;
2698         --extra-libs=*)
2699             add_extralibs $optval
2700         ;;
2701         --disable-devices)
2702             disable $INDEV_LIST $OUTDEV_LIST
2703         ;;
2704         --enable-debug=*)
2705             debuglevel="$optval"
2706         ;;
2707         --disable-programs)
2708             disable $PROGRAM_LIST
2709         ;;
2710         --disable-everything)
2711             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2712         ;;
2713         --disable-all)
2714             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2715             disable $LIBRARY_LIST $PROGRAM_LIST doc
2716         ;;
2717         --enable-random|--disable-random)
2718             action=${opt%%-random}
2719             do_random ${action#--} $COMPONENT_LIST
2720         ;;
2721         --enable-random=*|--disable-random=*)
2722             action=${opt%%-random=*}
2723             do_random ${action#--} $optval
2724         ;;
2725         --enable-*=*|--disable-*=*)
2726             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2727             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2728             eval list=\$$(toupper $thing)_LIST
2729             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2730             $action $(filter "$name" $list)
2731         ;;
2732         --enable-avserver|--disable-avserver*)
2733             warn "avserver has been removed, the ${opt} option is only"\
2734                  "provided for compatibility and will be removed in the future"
2735         ;;
2736         --enable-?*|--disable-?*)
2737             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2738             if is_in $option $COMPONENT_LIST; then
2739                 test $action = disable && action=unset
2740                 eval $action \$$(toupper ${option%s})_LIST
2741             elif is_in $option $CMDLINE_SELECT; then
2742                 $action $option
2743             else
2744                 die_unknown $opt
2745             fi
2746         ;;
2747         --list-*)
2748             NAME="${opt#--list-}"
2749             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2750             NAME=${NAME%s}
2751             eval show_list $NAME \$$(toupper $NAME)_LIST
2752         ;;
2753         --help|-h) show_help
2754         ;;
2755         --quiet|-q) quiet=yes
2756         ;;
2757         *)
2758             optname="${opt%%=*}"
2759             optname="${optname#--}"
2760             optname=$(echo "$optname" | sed 's/-/_/g')
2761             if is_in $optname $CMDLINE_SET; then
2762                 eval $optname='$optval'
2763             elif is_in $optname $CMDLINE_APPEND; then
2764                 append $optname "$optval"
2765             else
2766                 die_unknown $opt
2767             fi
2768         ;;
2769     esac
2770 done
2771
2772 for e in $env; do
2773     eval "export $e"
2774 done
2775
2776 disabled logging && logfile=/dev/null
2777
2778 # Die early if licensing-related configure options are incompatible.
2779 die_license_disabled() {
2780     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2781 }
2782
2783 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
2784 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2785 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2786
2787 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2788
2789 # Disable all the library-specific components if the library itself
2790 # is disabled, see AVCODEC_LIST and following _LIST variables.
2791
2792 disable_components(){
2793     disabled ${1} && disable $(
2794         eval components="\$$(toupper ${1})_COMPONENTS"
2795         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2796     )
2797 }
2798
2799 map 'disable_components $v' $LIBRARY_LIST
2800
2801 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2802 set >> $logfile
2803
2804 case "$toolchain" in
2805     *-asan)
2806         cc_default="${toolchain%-asan}"
2807         add_cflags  -fsanitize=address
2808         add_ldflags -fsanitize=address
2809     ;;
2810     *-msan)
2811         cc_default="${toolchain%-msan}"
2812         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2813         add_ldflags -fsanitize=memory
2814     ;;
2815     *-tsan)
2816         cc_default="${toolchain%-tsan}"
2817         add_cflags  -fsanitize=thread -pie
2818         add_ldflags -fsanitize=thread -pie
2819         case "$toolchain" in
2820             gcc-tsan)
2821                 add_cflags  -fPIC
2822                 add_ldflags -fPIC
2823                 ;;
2824         esac
2825     ;;
2826     *-usan)
2827         cc_default="${toolchain%-usan}"
2828         add_cflags  -fsanitize=undefined
2829         add_ldflags -fsanitize=undefined
2830         case "$toolchain" in
2831             clang-usan)
2832                 add_cflags -O1
2833                 ;;
2834         esac
2835     ;;
2836     valgrind-*)
2837         target_exec_default="valgrind"
2838         case "$toolchain" in
2839             valgrind-massif)
2840                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2841                 ;;
2842             valgrind-memcheck)
2843                 target_exec_args="--track-origins=yes --leak-check=full"
2844                 ;;
2845         esac
2846     ;;
2847     msvc)
2848         # Check whether the current MSVC version needs the C99 converter.
2849         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2850         # support enough of C99 to build libav. Default to the new
2851         # behaviour if the regexp was unable to match anything, since this
2852         # successfully parses the version number of existing supported
2853         # versions that require the converter (MSVC 2010 and 2012).
2854         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2855         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2856             cc_default="cl"
2857         else
2858             cc_default="c99wrap cl"
2859         fi
2860         ld_default="$source_path/compat/windows/mslink"
2861         nm_default="dumpbin -symbols"
2862         ar_default="lib"
2863         case "$arch" in
2864         arm*)
2865             as_default="armasm"
2866             ;;
2867         esac
2868         target_os_default="win32"
2869         # Use a relative path for TMPDIR. This makes sure all the
2870         # ffconf temp files are written with a relative path, avoiding
2871         # issues with msys/win32 path conversion for MSVC parameters
2872         # such as -Fo<file> or -out:<file>.
2873         TMPDIR=.
2874     ;;
2875     icl)
2876         cc_default="icl"
2877         ld_default="xilink"
2878         nm_default="dumpbin -symbols"
2879         ar_default="xilib"
2880         target_os_default="win32"
2881         TMPDIR=.
2882     ;;
2883     gcov)
2884         add_cflags  -fprofile-arcs -ftest-coverage
2885         add_ldflags -fprofile-arcs -ftest-coverage
2886     ;;
2887     llvm-cov)
2888         add_cflags -fprofile-arcs -ftest-coverage
2889         add_ldflags --coverage
2890     ;;
2891     hardened)
2892         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2893         add_cflags   -fno-strict-overflow -fstack-protector-all
2894         add_ldflags  -Wl,-z,relro -Wl,-z,now
2895     ;;
2896     ?*)
2897         die "Unknown toolchain $toolchain"
2898     ;;
2899 esac
2900
2901 test -n "$cross_prefix" && enable cross_compile
2902
2903 if enabled cross_compile; then
2904     test -n "$arch" && test -n "$target_os" ||
2905         die "Must specify target arch and OS when cross-compiling"
2906 fi
2907
2908 ar_default="${cross_prefix}${ar_default}"
2909 cc_default="${cross_prefix}${cc_default}"
2910 occ_default="${cross_prefix}${occ_default}"
2911 nm_default="${cross_prefix}${nm_default}"
2912 pkg_config_default="${cross_prefix}${pkg_config_default}"
2913 ranlib="${cross_prefix}${ranlib}"
2914 strip="${cross_prefix}${strip}"
2915
2916 sysinclude_default="${sysroot}/usr/include"
2917
2918 set_default arch cc pkg_config sysinclude target_exec target_os
2919 enabled cross_compile || host_cc_default=$cc
2920 set_default host_cc
2921
2922 if ! $pkg_config --version >/dev/null 2>&1; then
2923     warn "$pkg_config not found, library detection may fail."
2924     pkg_config=false
2925 fi
2926
2927 exesuf() {
2928     case $1 in
2929         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2930     esac
2931 }
2932
2933 EXESUF=$(exesuf $target_os)
2934 HOSTEXESUF=$(exesuf $host_os)
2935
2936 # set temporary file name
2937 : ${TMPDIR:=$TEMPDIR}
2938 : ${TMPDIR:=$TMP}
2939 : ${TMPDIR:=/tmp}
2940
2941 if ! check_cmd mktemp -u XXXXXX; then
2942     # simple replacement for missing mktemp
2943     # NOT SAFE FOR GENERAL USE
2944     mktemp(){
2945         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2946     }
2947 fi
2948
2949 tmpfile(){
2950     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2951         (set -C; exec > $tmp) 2>/dev/null ||
2952         die "Unable to create temporary file in $TMPDIR."
2953     append TMPFILES $tmp
2954     eval $1=$tmp
2955 }
2956
2957 trap 'rm -f -- $TMPFILES' EXIT
2958
2959 tmpfile TMPASM .asm
2960 tmpfile TMPC   .c
2961 tmpfile TMPE   $EXESUF
2962 tmpfile TMPH   .h
2963 tmpfile TMPO   .o
2964 tmpfile TMPS   .S
2965 tmpfile TMPSH  .sh
2966 tmpfile TMPV   .ver
2967
2968 unset -f mktemp
2969
2970 chmod +x $TMPE
2971
2972 # make sure we can execute files in $TMPDIR
2973 cat > $TMPSH 2>> $logfile <<EOF
2974 #! /bin/sh
2975 EOF
2976 chmod +x $TMPSH >> $logfile 2>&1
2977 if ! $TMPSH >> $logfile 2>&1; then
2978     cat <<EOF
2979 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2980 variable to another directory and make sure that it is not mounted noexec.
2981 EOF
2982     die "Sanity test failed."
2983 fi
2984
2985 armasm_flags(){
2986     for flag; do
2987         case $flag in
2988             # Filter out MSVC cl.exe options from cflags that shouldn't
2989             # be passed to gas-preprocessor
2990             -M[TD]*)                                            ;;
2991             *)                  echo $flag                      ;;
2992         esac
2993    done
2994 }
2995
2996 ccc_flags(){
2997     for flag; do
2998         case $flag in
2999             -std=c99)           echo -c99                       ;;
3000             -mcpu=*)            echo -arch ${flag#*=}           ;;
3001             -mieee)             echo -ieee                      ;;
3002             -O*|-fast)          echo $flag                      ;;
3003             -fno-math-errno)    echo -assume nomath_errno       ;;
3004             -g)                 echo -g3                        ;;
3005             -Wall)              echo -msg_enable level2         ;;
3006             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3007             -Wl,*)              echo $flag                      ;;
3008             -f*|-W*)                                            ;;
3009             *)                  echo $flag                      ;;
3010         esac
3011    done
3012 }
3013
3014 cparser_flags(){
3015     for flag; do
3016         case $flag in
3017             -Wno-switch)             echo -Wno-switch-enum ;;
3018             -Wno-format-zero-length) ;;
3019             -Wdisabled-optimization) ;;
3020             -Wno-pointer-sign)       echo -Wno-other ;;
3021             *)                       echo $flag ;;
3022         esac
3023     done
3024 }
3025
3026 msvc_common_flags(){
3027     for flag; do
3028         case $flag in
3029             # In addition to specifying certain flags under the compiler
3030             # specific filters, they must be specified here as well or else the
3031             # generic catch all at the bottom will print the original flag.
3032             -Wall)                ;;
3033             -std=c99)             ;;
3034             # Common flags
3035             -fomit-frame-pointer) ;;
3036             -g)                   echo -Z7 ;;
3037             -fno-math-errno)      ;;
3038             -fno-common)          ;;
3039             -fno-signed-zeros)    ;;
3040             -fPIC)                ;;
3041             -mthumb)              ;;
3042             -march=*)             ;;
3043             -lz)                  echo zlib.lib ;;
3044             -lavicap32)           echo vfw32.lib user32.lib ;;
3045             -lx264)               echo libx264.lib ;;
3046             -l*)                  echo ${flag#-l}.lib ;;
3047             -L*)                  echo -libpath:${flag#-L} ;;
3048             *)                    echo $flag ;;
3049         esac
3050     done
3051 }
3052
3053 msvc_flags(){
3054     msvc_common_flags "$@"
3055     for flag; do
3056         case $flag in
3057             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3058                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3059                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3060                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3061         esac
3062     done
3063 }
3064
3065 icl_flags(){
3066     msvc_common_flags "$@"
3067     for flag; do
3068         case $flag in
3069             # Despite what Intel's documentation says -Wall, which is supported
3070             # on Windows, does enable remarks so disable them here.
3071             -Wall)                echo $flag -Qdiag-disable:remark ;;
3072             -std=c99)             echo -Qstd=c99 ;;
3073         esac
3074     done
3075 }
3076
3077 pgi_flags(){
3078     for flag; do
3079         case $flag in
3080             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3081             -fomit-frame-pointer) echo -Mnoframe ;;
3082             -g)                   echo -gopt ;;
3083             *)                    echo $flag ;;
3084         esac
3085     done
3086 }
3087
3088 suncc_flags(){
3089     for flag; do
3090         case $flag in
3091             -march=*|-mcpu=*)
3092                 case "${flag#*=}" in
3093                     native)                   echo -xtarget=native       ;;
3094                     v9|niagara)               echo -xarch=sparc          ;;
3095                     ultrasparc)               echo -xarch=sparcvis       ;;
3096                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3097                     i586|pentium)             echo -xchip=pentium        ;;
3098                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3099                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3100                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3101                     pentium4*)          echo -xtarget=pentium4           ;;
3102                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3103                     *-sse3)             echo -xarch=sse3                 ;;
3104                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3105                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3106                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3107                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3108                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3109                     k8|opteron|athlon64|athlon-fx)
3110                                                echo -xarch=sse2a         ;;
3111                     athlon*)                   echo -xarch=pentium_proa  ;;
3112                 esac
3113                 ;;
3114             -std=c99)             echo -xc99              ;;
3115             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3116             -fPIC)                echo -KPIC -xcode=pic32 ;;
3117             -W*,*)                echo $flag              ;;
3118             -f*-*|-W*|-mimpure-text)                      ;;
3119             -shared)              echo -G                 ;;
3120             *)                    echo $flag              ;;
3121         esac
3122     done
3123 }
3124
3125 tms470_flags(){
3126     for flag; do
3127         case $flag in
3128             -march=*|-mcpu=*)
3129                 case "${flag#*=}" in
3130                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3131                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3132                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3133                     armv6*|arm11*)          echo -mv=6   ;;
3134                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3135                                             echo -mv=5e  ;;
3136                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3137                 esac
3138                 ;;
3139             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3140             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3141             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3142             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3143             -msoft-float)   echo --float_support=vfplib       ;;
3144             -O[0-3]|-mf=*)  echo $flag                        ;;
3145             -g)             echo -g -mn                       ;;
3146             -pds=*)         echo $flag                        ;;
3147             -D*|-I*)        echo $flag                        ;;
3148             --gcc|--abi=*)  echo $flag                        ;;
3149             -me)            echo $flag                        ;;
3150         esac
3151     done
3152 }
3153
3154 probe_cc(){
3155     pfx=$1
3156     _cc=$2
3157
3158     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3159     unset _ld_o _ldflags _ld_lib _ld_path
3160     unset _depflags _DEPCMD _DEPFLAGS
3161     _flags_filter=echo
3162
3163     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3164         _type=llvm_gcc
3165         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3166         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3167         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3168         _cflags_speed='-O3'
3169         _cflags_size='-Os'
3170     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3171         _type=gcc
3172         gcc_version=$($_cc --version | head -n1)
3173         gcc_basever=$($_cc -dumpversion)
3174         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3175         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3176         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3177         if ! $_cc -dumpversion | grep -q '^2\.'; then
3178             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3179         fi
3180         _cflags_speed='-O3'
3181         _cflags_size='-Os'
3182     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3183         _type=icc
3184         _ident=$($_cc --version | head -n1)
3185         _depflags='-MMD'
3186         _cflags_speed='-O3'
3187         _cflags_size='-Os'
3188         _cflags_noopt='-O1'
3189     elif $_cc -v 2>&1 | grep -q xlc; then
3190         _type=xlc
3191         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3192         _cflags_speed='-O5'
3193         _cflags_size='-O5 -qcompact'
3194     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3195         _type=ccc
3196         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3197         _DEPFLAGS='-M'
3198         _cflags_speed='-fast'
3199         _cflags_size='-O1'
3200         _flags_filter=ccc_flags
3201     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3202         test -d "$sysroot" || die "No valid sysroot specified."
3203         _type=armcc
3204         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3205         armcc_conf="$PWD/armcc.conf"
3206         $_cc --arm_linux_configure                 \
3207              --arm_linux_config_file="$armcc_conf" \
3208              --configure_sysroot="$sysroot"        \
3209              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3210              die "Error creating armcc configuration file."
3211         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3212         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3213         as_default="${cross_prefix}gcc"
3214         _depflags='-MMD'
3215         _cflags_speed='-O3'
3216         _cflags_size='-Os'
3217     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3218         _type=tms470
3219         _ident=$($_cc -version | head -n1 | tr -s ' ')
3220         _flags='--gcc --abi=eabi -me'
3221         _cc_e='-ppl -fe=$@'
3222         _cc_o='-fe=$@'
3223         _depflags='-ppa -ppd=$(@:.o=.d)'
3224         _cflags_speed='-O3 -mf=5'
3225         _cflags_size='-O3 -mf=2'
3226         _flags_filter=tms470_flags
3227     elif $_cc -v 2>&1 | grep -q clang; then
3228         _type=clang
3229         _ident=$($_cc --version 2>/dev/null | head -n1)
3230         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3231         _cflags_speed='-O3'
3232         _cflags_size='-Os'
3233     elif $_cc -V 2>&1 | grep -q Sun; then
3234         _type=suncc
3235         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3236         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3237         _DEPFLAGS='-xM1 -xc99'
3238         _ldflags='-std=c99'
3239         _cflags_speed='-O5'
3240         _cflags_size='-O5 -xspace'
3241         _flags_filter=suncc_flags
3242     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3243         _type=pathscale
3244         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3245         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3246         _cflags_speed='-O2'
3247         _cflags_size='-Os'
3248         _flags_filter='filter_out -Wdisabled-optimization'
3249     elif $_cc -v 2>&1 | grep -q Open64; then
3250         _type=open64
3251         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3252         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3253         _cflags_speed='-O2'
3254         _cflags_size='-Os'
3255         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3256     elif $_cc -V 2>&1 | grep -q Portland; then
3257         _type=pgi
3258         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3259         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3260         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3261         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3262         _cflags_noopt="-O1"
3263         _flags_filter=pgi_flags
3264     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3265         _type=armasm
3266         _ident=$($_cc | head -n1)
3267         # 4509: "This form of conditional instruction is deprecated"
3268         _flags="-nologo -ignore 4509"
3269         _flags_filter=armasm_flags
3270     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3271         _type=msvc
3272         _ident=$($_cc 2>&1 | head -n1)
3273         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3274         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3275         _cflags_speed="-O2"
3276         _cflags_size="-O1"
3277         if $_cc -nologo- 2>&1 | grep -q Linker; then
3278             _ld_o='-out:$@'
3279         else
3280             _ld_o='-Fe$@'
3281         fi
3282         _cc_o='-Fo$@'
3283         _cc_e='-P -Fi$@'
3284         _flags_filter=msvc_flags
3285         _ld_lib='lib%.a'
3286         _ld_path='-libpath:'
3287         _flags='-nologo'
3288     elif $_cc 2>&1 | grep -q Intel; then
3289         _type=icl
3290         _ident=$($_cc 2>&1 | head -n1)
3291         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3292         # Not only is O3 broken on 13.x+ but it is slower on all previous
3293         # versions (tested) as well.
3294         _cflags_speed="-O2"
3295         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3296         if $_cc 2>&1 | grep -q Linker; then
3297             _ld_o='-out:$@'
3298         else
3299             _ld_o='-Fe$@'
3300         fi
3301         _cc_o='-Fo$@'
3302         _cc_e='-P'
3303         _flags_filter=icl_flags
3304         _ld_lib='lib%.a'
3305         _ld_path='-libpath:'
3306         # -Qdiag-error to make icl error when seeing certain unknown arguments
3307         _flags='-nologo -Qdiag-error:4044,10157'
3308         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3309         # with MSVC which enables it by default.
3310         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3311     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3312         # lld can emulate multiple different linkers; in ms link.exe mode,
3313         # the -? parameter gives the help output which contains an identifyable
3314         # string, while it gives an error in other modes.
3315         _type=lld-link
3316         # The link.exe mode doesn't have a switch for getting the version,
3317         # but we can force it back to gnu mode and get the version from there.
3318         _ident=$($_cc -flavor gnu --version 2>/dev/null)
3319         _ld_o='-out:$@'
3320         _flags_filter=msvc_flags
3321         _ld_lib='lib%.a'
3322         _ld_path='-libpath:'
3323     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3324         _type=cparser
3325         _ident=$($_cc --version | head -n1)
3326         _depflags='-MMD'
3327         _cflags_speed='-O4'
3328         _cflags_size='-O2'
3329         _flags_filter=cparser_flags
3330     fi
3331
3332     eval ${pfx}_type=\$_type
3333     eval ${pfx}_ident=\$_ident
3334 }
3335
3336 set_ccvars(){
3337     eval ${1}_C=\${_cc_c-\${${1}_C}}
3338     eval ${1}_E=\${_cc_e-\${${1}_E}}
3339     eval ${1}_O=\${_cc_o-\${${1}_O}}
3340
3341     if [ -n "$_depflags" ]; then
3342         eval ${1}_DEPFLAGS=\$_depflags
3343     else
3344         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3345         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3346         eval DEP${1}FLAGS=\$_flags
3347     fi
3348 }
3349
3350 probe_cc cc "$cc"
3351 cflags_filter=$_flags_filter
3352 cflags_speed=$_cflags_speed
3353 cflags_size=$_cflags_size
3354 cflags_noopt=$_cflags_noopt
3355 add_cflags $_flags $_cflags
3356 cc_ldflags=$_ldflags
3357 set_ccvars CC
3358
3359 probe_cc hostcc "$host_cc"
3360 host_cflags_filter=$_flags_filter
3361 add_host_cflags  $_flags $_cflags
3362 set_ccvars HOSTCC
3363
3364 test -n "$cc_type" && enable $cc_type ||
3365     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3366
3367 : ${as_default:=$cc}
3368 : ${objcc_default:=$cc}
3369 : ${dep_cc_default:=$cc}
3370 : ${ld_default:=$cc}
3371 : ${host_ld_default:=$host_cc}
3372 set_default ar as objcc dep_cc ld host_ld
3373
3374 probe_cc as "$as"
3375 asflags_filter=$_flags_filter
3376 add_asflags $_flags $_cflags
3377 set_ccvars AS
3378
3379 probe_cc objcc "$objcc"
3380 objcflags_filter=$_flags_filter
3381 add_objcflags $_flags $_cflags
3382 set_ccvars OBJC
3383
3384 probe_cc ld "$ld"
3385 ldflags_filter=$_flags_filter
3386 add_ldflags $_flags $_ldflags
3387 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3388 LD_O=${_ld_o-$LD_O}
3389 LD_LIB=${_ld_lib-$LD_LIB}
3390 LD_PATH=${_ld_path-$LD_PATH}
3391
3392 probe_cc hostld "$host_ld"
3393 host_ldflags_filter=$_flags_filter
3394 add_host_ldflags $_flags $_ldflags
3395 HOSTLD_O=${_ld_o-$HOSTLD_O}
3396
3397 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3398     probe_cc depcc "$dep_cc"
3399     CCDEP=${_DEPCMD:-$DEPCMD}
3400     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3401     DEPCCFLAGS=$_flags
3402 fi
3403
3404 if $ar 2>&1 | grep -q Microsoft; then
3405     arflags="-nologo"
3406     ar_o='-out:$@'
3407 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3408     arflags="rq"
3409     ar_o='$@'
3410 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3411     arflags='-Xany -r -c'
3412     ar_o='$@'
3413 else
3414     arflags="rc"
3415     ar_o='$@'
3416 fi
3417
3418 add_cflags $extra_cflags
3419 add_objcflags $extra_objcflags
3420 add_asflags $extra_cflags
3421
3422 if test -n "$sysroot"; then
3423     case "$cc_type" in
3424         gcc|llvm_gcc|clang)
3425             add_cppflags --sysroot="$sysroot"
3426             add_ldflags --sysroot="$sysroot"
3427         ;;
3428         tms470)
3429             add_cppflags -I"$sysinclude"
3430             add_ldflags  --sysroot="$sysroot"
3431         ;;
3432     esac
3433 fi
3434
3435 if test "$cpu" = host; then
3436     enabled cross_compile &&
3437         die "--cpu=host makes no sense when cross-compiling."
3438
3439     case "$cc_type" in
3440         gcc|llvm_gcc)
3441             check_native(){
3442                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3443                 sed -n "/cc1.*$1=/{
3444                             s/.*$1=\\([^ ]*\\).*/\\1/
3445                             p
3446                             q
3447                         }" $TMPE
3448             }
3449             cpu=$(check_native -march || check_native -mcpu)
3450         ;;
3451     esac
3452
3453     test "${cpu:-host}" = host &&
3454         die "--cpu=host not supported with compiler $cc"
3455 fi
3456
3457 # Deal with common $arch aliases
3458 case "$arch" in
3459     aarch64|arm64)
3460         arch="aarch64"
3461     ;;
3462     arm*)
3463         arch="arm"
3464     ;;
3465     mips*|IP*)
3466         case "$arch" in
3467         *el)
3468             add_cppflags -EL
3469             add_ldflags -EL
3470         ;;
3471         *eb)
3472             add_cppflags -EB
3473             add_ldflags -EB
3474         ;;
3475         esac
3476         arch="mips"
3477     ;;
3478     parisc*|hppa*)
3479         arch="parisc"
3480     ;;
3481     "Power Macintosh"|ppc*|powerpc*)
3482         arch="ppc"
3483     ;;
3484     s390|s390x)
3485         arch="s390"
3486     ;;
3487     sh4|sh)
3488         arch="sh4"
3489     ;;
3490     sun4u|sparc*)
3491         arch="sparc"
3492     ;;
3493     tilegx|tile-gx)
3494         arch="tilegx"
3495     ;;
3496     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3497         arch="x86"
3498     ;;
3499 esac
3500
3501 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3502 enable $arch
3503
3504 # Add processor-specific flags
3505 if enabled aarch64; then
3506
3507     case $cpu in
3508         armv*)
3509             cpuflags="-march=$cpu"
3510         ;;
3511         *)
3512             cpuflags="-mcpu=$cpu"
3513         ;;
3514     esac
3515
3516 elif enabled alpha; then
3517
3518     cpuflags="-mcpu=$cpu"
3519
3520 elif enabled arm; then
3521
3522     check_arm_arch() {
3523         check_cpp_condition stddef.h \
3524             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3525             $cpuflags
3526     }
3527
3528     probe_arm_arch() {
3529         if   check_arm_arch 4;        then echo armv4
3530         elif check_arm_arch 4T;       then echo armv4t
3531         elif check_arm_arch 5;        then echo armv5
3532         elif check_arm_arch 5E;       then echo armv5e
3533         elif check_arm_arch 5T;       then echo armv5t
3534         elif check_arm_arch 5TE;      then echo armv5te
3535         elif check_arm_arch 5TEJ;     then echo armv5te
3536         elif check_arm_arch 6;        then echo armv6
3537         elif check_arm_arch 6J;       then echo armv6j
3538         elif check_arm_arch 6K;       then echo armv6k
3539         elif check_arm_arch 6Z;       then echo armv6z
3540         elif check_arm_arch 6ZK;      then echo armv6zk
3541         elif check_arm_arch 6T2;      then echo armv6t2
3542         elif check_arm_arch 7;        then echo armv7
3543         elif check_arm_arch 7A  7_A;  then echo armv7-a
3544         elif check_arm_arch 7S;       then echo armv7-a
3545         elif check_arm_arch 7R  7_R;  then echo armv7-r
3546         elif check_arm_arch 7M  7_M;  then echo armv7-m
3547         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3548         elif check_arm_arch 8A  8_A;  then echo armv8-a
3549         fi
3550     }
3551
3552     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3553
3554     case $cpu in
3555         armv*)
3556             cpuflags="-march=$cpu"
3557             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3558         ;;
3559         *)
3560             cpuflags="-mcpu=$cpu"
3561             case $cpu in
3562                 cortex-a*)                               subarch=armv7a  ;;
3563                 cortex-r*)                               subarch=armv7r  ;;
3564                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3565                 arm11*)                                  subarch=armv6   ;;
3566                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3567                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3568                 *)                             subarch=$(probe_arm_arch) ;;
3569             esac
3570         ;;
3571     esac
3572
3573     case "$subarch" in
3574         armv5t*)    enable fast_clz                ;;
3575         armv[6-8]*) enable fast_clz fast_unaligned ;;
3576     esac
3577
3578 elif enabled avr32; then
3579
3580     case $cpu in
3581         ap7[02]0[0-2])
3582             subarch="avr32_ap"
3583             cpuflags="-mpart=$cpu"
3584         ;;
3585         ap)
3586             subarch="avr32_ap"
3587             cpuflags="-march=$cpu"
3588         ;;
3589         uc3[ab]*)
3590             subarch="avr32_uc"
3591             cpuflags="-mcpu=$cpu"
3592         ;;
3593         uc)
3594             subarch="avr32_uc"
3595             cpuflags="-march=$cpu"
3596         ;;
3597     esac
3598
3599 elif enabled bfin; then
3600
3601     cpuflags="-mcpu=$cpu"
3602
3603 elif enabled mips; then
3604
3605     cpuflags="-march=$cpu"
3606
3607 elif enabled ppc; then
3608
3609     disable ldbrx
3610
3611     case $(tolower $cpu) in
3612         601|ppc601|powerpc601)
3613             cpuflags="-mcpu=601"
3614             disable altivec
3615         ;;
3616         603*|ppc603*|powerpc603*)
3617             cpuflags="-mcpu=603"
3618             disable altivec
3619         ;;
3620         604*|ppc604*|powerpc604*)
3621             cpuflags="-mcpu=604"
3622             disable altivec
3623         ;;
3624         g3|75*|ppc75*|powerpc75*)
3625             cpuflags="-mcpu=750"
3626             disable altivec
3627         ;;
3628         g4|745*|ppc745*|powerpc745*)
3629             cpuflags="-mcpu=7450"
3630             disable vsx
3631         ;;
3632         74*|ppc74*|powerpc74*)
3633             cpuflags="-mcpu=7400"
3634             disable vsx
3635         ;;
3636         g5|970|ppc970|powerpc970)
3637             cpuflags="-mcpu=970"
3638             disable vsx
3639         ;;
3640         power[3-6]*)
3641             cpuflags="-mcpu=$cpu"
3642             disable vsx
3643         ;;
3644         power[7-8]*)
3645             cpuflags="-mcpu=$cpu"
3646             enable ldbrx
3647         ;;
3648         cell)
3649             cpuflags="-mcpu=cell"
3650             enable ldbrx
3651             disable vsx
3652         ;;
3653         e500mc)
3654             cpuflags="-mcpu=e500mc"
3655             disable altivec
3656         ;;
3657         e500v2)
3658             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3659             disable altivec
3660             disable dcbzl
3661         ;;
3662         e500)
3663             cpuflags="-mcpu=8540 -mhard-float"
3664             disable altivec
3665             disable dcbzl
3666         ;;
3667     esac
3668
3669 elif enabled sparc; then
3670
3671     case $cpu in
3672         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3673             cpuflags="-mcpu=$cpu"
3674         ;;
3675         ultrasparc*|niagara[234])
3676             cpuflags="-mcpu=$cpu"
3677         ;;
3678     esac
3679
3680 elif enabled x86; then
3681
3682     case $cpu in
3683         i[345]86|pentium)
3684             cpuflags="-march=$cpu"
3685             disable i686
3686             disable mmx
3687         ;;
3688         # targets that do NOT support nopl and conditional mov (cmov)
3689         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3690             cpuflags="-march=$cpu"
3691             disable i686
3692         ;;
3693         # targets that do support nopl and conditional mov (cmov)
3694         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3695             cpuflags="-march=$cpu"
3696             enable i686
3697             enable fast_cmov
3698         ;;
3699         # targets that do support conditional mov but on which it's slow
3700         pentium4|pentium4m|prescott|nocona)
3701             cpuflags="-march=$cpu"
3702             enable i686
3703             disable fast_cmov
3704         ;;
3705     esac
3706
3707 fi
3708
3709 if [ "$cpu" != generic ]; then
3710     add_cflags  $cpuflags
3711     add_asflags $cpuflags
3712     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3713 fi
3714
3715 # compiler sanity check
3716 check_exec <<EOF
3717 int main(void){ return 0; }
3718 EOF
3719 if test "$?" != 0; then
3720     echo "$cc is unable to create an executable file."
3721     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3722         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3723         echo "Only do this if you know what cross compiling means."
3724     fi
3725     die "C compiler test failed."
3726 fi
3727
3728 add_cppflags -D_ISOC99_SOURCE
3729
3730 # some compilers silently accept -std=c11, so we also need to check that the
3731 # version macro is defined properly
3732 if test_cflags_cpp -std=c11 "__STDC_VERSION__ >= 201112L"; then
3733     add_cflags -std=c11
3734 else
3735     check_cflags -std=c99
3736 fi
3737
3738 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3739 #include <stdlib.h>
3740 EOF
3741 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3742 #include <stdlib.h>
3743 EOF
3744
3745 add_host_cppflags -D_ISOC99_SOURCE
3746 check_host_cflags -std=c99
3747 check_host_cflags -Wall
3748 check_host_cflags -O3
3749
3750 check_64bit(){
3751     arch32=$1
3752     arch64=$2
3753     expr=$3
3754     check_code cc "" "int test[2*($expr) - 1]" &&
3755         subarch=$arch64 || subarch=$arch32
3756 }
3757
3758 case "$arch" in
3759     aarch64|alpha|ia64)
3760         spic=$shared
3761     ;;
3762     mips)
3763         check_64bit mips mips64 '_MIPS_SIM > 1'
3764         spic=$shared
3765     ;;
3766     parisc)
3767         check_64bit parisc parisc64 'sizeof(void *) > 4'
3768         spic=$shared
3769     ;;
3770     ppc)
3771         check_64bit ppc ppc64 'sizeof(void *) > 4'
3772         spic=$shared
3773     ;;
3774     s390)
3775         check_64bit s390 s390x 'sizeof(void *) > 4'
3776         spic=$shared
3777     ;;
3778     sparc)
3779         check_64bit sparc sparc64 'sizeof(void *) > 4'
3780         spic=$shared
3781     ;;
3782     x86)
3783         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3784         if test "$subarch" = "x86_64"; then
3785             spic=$shared
3786         fi
3787     ;;
3788 esac
3789
3790 enable $subarch
3791 enabled spic && enable_weak pic
3792
3793 # OS specific
3794 case $target_os in
3795     aix)
3796         SHFLAGS=-shared
3797         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3798         enabled shared && add_ldflags -Wl,-brtl
3799         ;;
3800     android)
3801         disable symver
3802         enable section_data_rel_ro
3803         SLIB_INSTALL_NAME='$(SLIBNAME)'
3804         SLIB_INSTALL_LINKS=
3805         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3806         ;;
3807     haiku)
3808         prefix_default="/boot/common"
3809         network_extralibs="-lnetwork"
3810         host_libs=
3811         ;;
3812     sunos)
3813         SHFLAGS='-shared -Wl,-h,$$(@F)'
3814         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3815         network_extralibs="-lsocket -lnsl"
3816         # When using suncc to build, the Solaris linker will mark
3817         # an executable with each instruction set encountered by
3818         # the Solaris assembler.  As our libraries contain their own
3819         # guards for processor-specific code, instead suppress
3820         # generation of the HWCAPS ELF section on Solaris x86 only.
3821         enabled_all suncc x86 &&
3822             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3823             add_ldflags -Wl,-M,mapfile
3824         nm_default='nm -P -g'
3825         version_script='-M'
3826         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3827         ;;
3828     netbsd)
3829         disable symver
3830         oss_indev_extralibs="-lossaudio"
3831         oss_outdev_extralibs="-lossaudio"
3832         ;;
3833     openbsd|bitrig)
3834         disable symver
3835         SHFLAGS='-shared'
3836         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3837         SLIB_INSTALL_LINKS=
3838         oss_indev_extralibs="-lossaudio"
3839         oss_outdev_extralibs="-lossaudio"
3840         ;;
3841     dragonfly)
3842         disable symver
3843         ;;
3844     freebsd)
3845         ;;
3846     bsd/os)
3847         add_extralibs -lpoll -lgnugetopt
3848         ;;
3849     darwin)
3850         enabled ppc && add_asflags -force_cpusubtype_ALL
3851         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3852         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3853         add_ldflags -Wl,-dynamic,-search_paths_first
3854         SLIBSUF=".dylib"
3855         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3856         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3857         objformat="macho"
3858         enabled x86_64 && objformat="macho64"
3859         enabled_any pic shared ||
3860             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3861         check_header dispatch/dispatch.h &&
3862             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3863         ;;
3864     msys*)
3865         die "Native MSYS builds are discouraged, please use the MINGW environment."
3866         ;;
3867     mingw32*|mingw64*)
3868         if test $target_os = "mingw32ce"; then
3869             disable network
3870         else
3871             target_os=mingw32
3872         fi
3873         LIBTARGET=i386
3874         if enabled x86_64; then
3875             LIBTARGET="i386:x86-64"
3876         elif enabled arm; then
3877             LIBTARGET=arm-wince
3878         fi
3879         check_ldflags -Wl,--nxcompat
3880         check_ldflags -Wl,--dynamicbase
3881         shlibdir_default="$bindir_default"
3882         SLIBPREF=""
3883         SLIBSUF=".dll"
3884         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3885         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3886         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3887         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3888         SLIB_INSTALL_LINKS=
3889         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3890         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3891         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3892         objformat="win32"
3893         dlltool="${cross_prefix}dlltool"
3894         ranlib=:
3895         enable dos_paths
3896         ;;
3897     win32|win64)
3898         disable symver
3899         if enabled shared; then
3900             # Link to the import library instead of the normal static library
3901             # for shared libs.
3902             LD_LIB='%.lib'
3903             # Cannot build both shared and static libs with MSVC or icl.
3904             disable static
3905         fi
3906         shlibdir_default="$bindir_default"
3907         SLIBPREF=""
3908         SLIBSUF=".dll"
3909         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3910         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3911         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3912         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3913         SLIB_INSTALL_LINKS=
3914         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3915         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3916         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3917         objformat="win32"
3918         ranlib=:
3919         enable dos_paths
3920         ;;
3921     cygwin*)
3922         target_os=cygwin
3923         shlibdir_default="$bindir_default"
3924         SLIBPREF="cyg"
3925         SLIBSUF=".dll"
3926         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3927         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3928         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3929         SLIB_INSTALL_LINKS=
3930         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3931         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3932         objformat="win32"
3933         enable dos_paths
3934         ;;
3935     *-dos|freedos|opendos)
3936         network_extralibs="-lsocket"
3937         objformat="coff"
3938         enable dos_paths
3939         add_cppflags -U__STRICT_ANSI__
3940         ;;
3941     linux)
3942         enable dv1394
3943         enable section_data_rel_ro
3944         ;;
3945     irix*)
3946         target_os=irix
3947         ranlib="echo ignoring ranlib"
3948         ;;
3949     os/2*)
3950         ln_s="cp -f"
3951         objformat="aout"
3952         add_cppflags -D_GNU_SOURCE
3953         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3954         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3955         LIBSUF="_s.a"
3956         SLIBPREF=""
3957         SLIBSUF=".dll"
3958         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3959         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3960         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3961             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3962             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3963             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3964             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
3965         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3966             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3967         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3968         enable dos_paths
3969         ;;
3970     gnu/kfreebsd)
3971         add_cppflags -D_BSD_SOURCE
3972         ;;
3973     gnu)
3974         ;;
3975     qnx)
3976         add_cppflags -D_QNX_SOURCE
3977         network_extralibs="-lsocket"
3978         ;;
3979     symbian)
3980         SLIBSUF=".dll"
3981         enable dos_paths
3982         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3983         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3984         add_ldflags -Wl,--target1-abs,--no-undefined \
3985                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3986                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3987         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3988                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3989                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3990         ;;
3991     osf1)
3992         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3993         ;;
3994     minix)
3995         ;;
3996     plan9)
3997         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3998                      -D_REENTRANT_SOURCE        \
3999                      -D_RESEARCH_SOURCE         \
4000                      -DFD_SETSIZE=96            \
4001                      -DHAVE_SOCK_OPTS
4002         add_compat strtod.o strtod=avpriv_strtod
4003         network_extralibs='-lbsd'
4004         exeobjs=compat/plan9/main.o
4005         cp_f='cp'
4006         ;;
4007     none)
4008         ;;
4009     *)
4010         die "Unknown OS '$target_os'."
4011         ;;
4012 esac
4013
4014 # determine libc flavour
4015
4016 probe_libc(){
4017     pfx=$1
4018     pfx_no_=${pfx%_}
4019     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4020     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4021         eval ${pfx}libc_type=uclibc
4022         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4023     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4024         eval ${pfx}libc_type=glibc
4025         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4026     # MinGW headers can be installed on Cygwin, so check for newlib first.
4027     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4028         eval ${pfx}libc_type=newlib
4029         add_${pfx}cppflags -U__STRICT_ANSI__
4030     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4031     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4032         eval ${pfx}libc_type=mingw64
4033         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4034         eval test \$${pfx_no_}cc_type = "gcc" &&
4035             add_${pfx}cppflags -D__printf__=__gnu_printf__
4036     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4037          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4038         eval ${pfx}libc_type=mingw32
4039         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4040             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4041             die "ERROR: MinGW32 runtime version must be >= 3.15."
4042         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4043         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700__" &&
4044             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
4045         eval test \$${pfx_no_}cc_type = "gcc" &&
4046             add_${pfx}cppflags -D__printf__=__gnu_printf__
4047     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4048         eval ${pfx}libc_type=msvcrt
4049         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4050             if [ "$pfx" = host_ ]; then
4051                 add_host_cppflags -Dsnprintf=_snprintf
4052             else
4053                 add_compat strtod.o strtod=avpriv_strtod
4054                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4055                                              _snprintf=avpriv_snprintf  \
4056                                              vsnprintf=avpriv_vsnprintf
4057             fi
4058         fi
4059         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
4060         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4061         # 0x601 by default unless something else is set by the user.
4062         # This can easily lead to us detecting functions only present
4063         # in such new versions and producing binaries requiring windows 7.0.
4064         # Therefore explicitly set the default to XP unless the user has
4065         # set something else on the command line.
4066         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4067         # family. For these cases, configure is free to use any functions
4068         # found in the SDK headers by default. (Alternatively, we could force
4069         # _WIN32_WINNT to 0x0602 in that case.)
4070         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4071             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4072 #ifdef WINAPI_FAMILY
4073 #include <winapifamily.h>
4074 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4075 #error not desktop
4076 #endif
4077 #endif
4078 EOF
4079         if [ "$pfx" = "" ]; then
4080             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4081         fi
4082     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4083         eval ${pfx}libc_type=klibc
4084     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4085         eval ${pfx}libc_type=bionic
4086     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4087         eval ${pfx}libc_type=solaris
4088         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4089     else
4090         eval ${pfx}libc_type=default
4091         add_${pfx}cppflags -D_DEFAULT_SOURCE
4092     fi
4093 }
4094
4095 probe_libc
4096 test -n "$libc_type" && enable libc_$libc_type
4097 probe_libc host_
4098 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4099
4100 case $libc_type in
4101     bionic)
4102         add_compat strtod.o strtod=avpriv_strtod
4103         ;;
4104 esac
4105
4106 # hacks for compiler/libc/os combinations
4107
4108 if enabled_all tms470 libc_glibc; then
4109     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4110     add_cppflags -D__USER_LABEL_PREFIX__=
4111     add_cppflags -D__builtin_memset=memset
4112     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4113     add_cflags   -pds=48    # incompatible redefinition of macro
4114 fi
4115
4116 if enabled_all ccc libc_glibc; then
4117     add_ldflags -Wl,-z,now  # calls to libots crash without this
4118 fi
4119
4120 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4121     add_cppflags '-I\$(SRC_PATH)/compat/float'
4122
4123 esc(){
4124     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4125 }
4126
4127 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
4128
4129 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4130
4131 set_default $PATHS_LIST
4132 set_default nm
4133
4134 # we need to build at least one lib type
4135 if ! enabled_any static shared; then
4136     cat <<EOF
4137 At least one library type must be built.
4138 Specify --enable-static to build the static libraries or --enable-shared to
4139 build the shared libraries as well. To only build the shared libraries specify
4140 --disable-static in addition to --enable-shared.
4141 EOF
4142     exit 1
4143 fi
4144
4145 disabled optimizations || check_cflags -fomit-frame-pointer
4146
4147 enable_weak_pic() {
4148     disabled pic && return
4149     enable pic
4150     add_cppflags -DPIC
4151     case "$target_os" in
4152     mingw*|cygwin*)
4153         ;;
4154     *)
4155         add_cflags -fPIC
4156         ;;
4157     esac
4158     add_asflags  -fPIC
4159 }
4160
4161 enabled pic && enable_weak_pic
4162
4163 check_cc <<EOF || die "Symbol mangling check failed."
4164 int ff_extern;
4165 EOF
4166 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4167 extern_prefix=${sym%%ff_extern*}
4168
4169 check_cc <<EOF && enable_weak inline_asm
4170 void foo(void) { __asm__ volatile ("" ::); }
4171 EOF
4172
4173 _restrict=
4174 for restrict_keyword in restrict __restrict__ __restrict; do
4175     check_cc <<EOF && _restrict=$restrict_keyword && break
4176 void foo(char * $restrict_keyword p);
4177 EOF
4178 done
4179
4180 check_cc <<EOF && enable pragma_deprecated
4181 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4182 EOF
4183
4184 check_cc <<EOF && enable attribute_packed
4185 struct { int x; } __attribute__((packed)) x;
4186 EOF
4187
4188 check_cc <<EOF && enable attribute_may_alias
4189 union { int x; } __attribute__((may_alias)) x;
4190 EOF
4191
4192 check_cc <<EOF || die "endian test failed"
4193 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4194 EOF
4195 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4196
4197 check_gas() {
4198     log "check_gas using '$as' as AS"
4199     # :vararg is used on aarch64, arm and ppc altivec
4200     check_as <<EOF || return 1
4201 .macro m n, y:vararg=0
4202 \n: .int \y
4203 .endm
4204 m x
4205 EOF
4206     # .altmacro is only used in arm asm
4207     ! enabled arm || check_as <<EOF || return 1
4208 .altmacro
4209 EOF
4210     enable gnu_as
4211     return 0
4212 }
4213
4214 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4215     nogas=:
4216     enabled_any arm aarch64 && nogas=die
4217     enabled_all ppc altivec && nogas=warn
4218     as_noop=-v
4219
4220     case $as_type in
4221         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4222         gcc)  gaspp_as_type=gas ;;
4223         *)    gaspp_as_type=$as_type ;;
4224     esac
4225
4226     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4227
4228     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4229         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4230
4231     if ! check_gas ; then
4232         as=${gas:=$as}
4233         check_gas || \
4234             $nogas "GNU assembler not found, install/update gas-preprocessor"
4235     fi
4236
4237     check_as <<EOF && enable as_func
4238 .func test
4239 .endfunc
4240 EOF
4241 fi
4242
4243 check_inline_asm inline_asm_labels '"1:\n"'
4244
4245 if enabled aarch64; then
4246     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4247     # internal assembler in clang 3.3 does not support this instruction
4248     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4249     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4250
4251     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4252
4253 elif enabled alpha; then
4254
4255     check_cflags -mieee
4256
4257 elif enabled arm; then
4258
4259     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4260     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4261     enabled thumb && check_cflags -mthumb || check_cflags -marm
4262
4263     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4264         enable vfp_args
4265     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4266         enable vfp_args
4267     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4268         case "${cross_prefix:-$cc}" in
4269             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4270             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4271 __asm__ (".eabi_attribute 28, 1");
4272 int main(void) { return 0; }
4273 EOF
4274         esac
4275         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4276     fi
4277
4278     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4279     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4280     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4281     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4282     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4283     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4284
4285     [ $target_os = linux ] || [ $target_os = android ] ||
4286         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4287             $ARCH_EXT_LIST_ARM
4288
4289     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4290
4291     check_as <<EOF && enable as_dn_directive
4292 ra .dn d0.i16
4293 .unreq ra
4294 EOF
4295     check_as <<EOF && enable as_fpu_directive
4296 .fpu neon
4297 EOF
4298
4299     # llvm's integrated assembler supports .object_arch from llvm 3.5
4300     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4301 .object_arch armv4
4302 EOF
4303
4304     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4305
4306 elif enabled mips; then
4307
4308     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4309
4310     # make sure that only an instruction set is enabled
4311     disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4312
4313     if enabled mips64; then
4314         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4315             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4316                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4317     else
4318         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4319             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4320                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4321     fi
4322
4323 elif enabled parisc; then
4324
4325     if enabled gcc; then
4326         case $($cc -dumpversion) in
4327             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4328         esac
4329     fi
4330
4331 elif enabled ppc; then
4332
4333     enable local_aligned_8 local_aligned_16 local_aligned_32
4334
4335     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4336     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4337     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4338     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4339
4340     # AltiVec flags: The FSF version of GCC differs from the Apple version
4341     if enabled altivec; then
4342         check_cflags -maltivec -mabi=altivec &&
4343         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4344         check_cflags -faltivec
4345
4346         # check if our compiler supports Motorola AltiVec C API
4347         check_cc <<EOF || disable altivec
4348 $inc_altivec_h
4349 int main(void) {
4350     vector signed int v1 = (vector signed int) { 0 };
4351     vector signed int v2 = (vector signed int) { 1 };
4352     v1 = vec_add(v1, v2);
4353     return 0;
4354 }
4355 EOF
4356
4357         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4358     fi
4359
4360     if enabled vsx; then
4361         check_cflags -mvsx &&
4362         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4363     fi
4364
4365     if enabled power8; then
4366         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4367     fi
4368
4369 elif enabled x86; then
4370
4371     check_builtin rdtsc    intrin.h   "__rdtsc()"
4372     check_builtin mm_empty mmintrin.h "_mm_empty()"
4373
4374     enable local_aligned_8 local_aligned_16 local_aligned_32
4375
4376     # check whether EBP is available on x86
4377     # As 'i' is stored on the stack, this program will crash
4378     # if the base pointer is used to access it because the
4379     # base pointer is cleared in the inline assembly code.
4380     check_exec_crash <<EOF && enable ebp_available
4381 volatile int i=0;
4382 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4383 return i;
4384 EOF
4385
4386     # check whether EBX is available on x86
4387     check_inline_asm ebx_available '""::"b"(0)' &&
4388         check_inline_asm ebx_available '"":::"%ebx"'
4389
4390     # check whether xmm clobbers are supported
4391     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4392
4393     # check whether binutils is new enough to compile SSSE3/MMXEXT
4394     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4395     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4396
4397     if ! disabled_any asm mmx yasm; then
4398         if check_cmd $yasmexe --version; then
4399             enabled x86_64 && yasm_extra="-m amd64"
4400             yasm_debug="-g dwarf2"
4401         elif check_cmd nasm -v; then
4402             yasmexe=nasm
4403             yasm_debug="-g -F dwarf"
4404             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4405         fi
4406
4407         YASMFLAGS="-f $objformat $yasm_extra"
4408         enabled pic               && append YASMFLAGS "-DPIC"
4409         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4410         case "$objformat" in
4411             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4412         esac
4413
4414         check_yasm "movbe ecx, [5]" && enable yasm ||
4415             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4416         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4417         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4418         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4419         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4420         check_yasm "CPU amdnop" || disable cpunop
4421     fi
4422
4423     case "$cpu" in
4424         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4425             disable fast_clz
4426         ;;
4427     esac
4428
4429 fi
4430
4431 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4432
4433 check_ldflags -Wl,--as-needed
4434
4435 if check_func dlopen; then
4436     ldl=
4437 elif check_func dlopen -ldl; then
4438     ldl=-ldl
4439 fi
4440
4441 if ! disabled network; then
4442     check_func getaddrinfo $network_extralibs
4443     check_func inet_aton $network_extralibs
4444
4445     check_type netdb.h "struct addrinfo"
4446     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4447     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4448     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4449     check_type poll.h "struct pollfd"
4450     check_type netinet/sctp.h "struct sctp_event_subscribe"
4451     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4452     check_type netinet/in.h "struct sockaddr_in6"
4453     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4454     check_type "sys/types.h sys/socket.h" socklen_t
4455
4456     # Prefer arpa/inet.h over winsock2
4457     if check_header arpa/inet.h ; then
4458         check_func closesocket
4459     elif check_header winsock2.h ; then
4460         check_func_headers winsock2.h closesocket -lws2 &&
4461             network_extralibs="-lws2" ||
4462         { check_func_headers winsock2.h closesocket -lws2_32 &&
4463             network_extralibs="-lws2_32"; } || disable winsock2_h network
4464         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4465
4466         check_type ws2tcpip.h socklen_t
4467         check_type ws2tcpip.h "struct addrinfo"
4468         check_type ws2tcpip.h "struct group_source_req"
4469         check_type ws2tcpip.h "struct ip_mreq_source"
4470         check_type ws2tcpip.h "struct ipv6_mreq"
4471         check_type winsock2.h "struct pollfd"
4472         check_struct winsock2.h "struct sockaddr" sa_len
4473         check_type ws2tcpip.h "struct sockaddr_in6"
4474         check_type ws2tcpip.h "struct sockaddr_storage"
4475     else
4476         disable network
4477     fi
4478 fi
4479
4480 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4481 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4482 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4483 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4484
4485 case "$custom_allocator" in
4486     jemalloc)
4487         # jemalloc by default does not use a prefix
4488         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4489     ;;
4490     tcmalloc)
4491         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
4492         malloc_prefix=tc_
4493     ;;
4494 esac
4495
4496 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4497 check_func  ${malloc_prefix}memalign            && enable memalign
4498 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4499
4500 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4501     check_func_headers time.h clock_gettime ||
4502         { check_lib time.h clock_gettime -lrt && LIBRT="-lrt"; }
4503
4504 check_func  fcntl
4505 check_func  fork
4506 check_func  gethrtime
4507 check_func  getopt
4508 check_func  getrusage
4509 check_func  gettimeofday
4510 check_func  gmtime_r
4511 check_func  isatty
4512 check_func  localtime_r
4513 check_func  mach_absolute_time
4514 check_func  mkstemp
4515 check_func  mmap
4516 check_func  mprotect
4517 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4518 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt; }
4519 check_func  sched_getaffinity
4520 check_func  setrlimit
4521 check_func  strerror_r
4522 check_func  sysconf
4523 check_func  sysctl
4524 check_func  usleep
4525
4526 check_func_headers io.h setmode
4527 check_func_headers stdlib.h getenv
4528
4529 check_func_headers windows.h CoTaskMemFree -lole32
4530 check_func_headers windows.h GetProcessAffinityMask
4531 check_func_headers windows.h GetProcessTimes
4532 check_func_headers windows.h GetSystemTimeAsFileTime
4533 check_func_headers windows.h LoadLibrary
4534 check_func_headers windows.h MapViewOfFile
4535 check_func_headers windows.h SetConsoleTextAttribute
4536 check_func_headers windows.h Sleep
4537 check_func_headers windows.h VirtualAlloc
4538 check_struct windows.h "CONDITION_VARIABLE" Ptr
4539
4540 check_header direct.h
4541 check_header dlfcn.h
4542 check_header d3d11.h
4543 check_header dxva.h
4544 check_header dxva2api.h
4545 check_header io.h
4546 check_header mach/mach_time.h
4547 check_header malloc.h
4548 check_header poll.h
4549 check_header sys/mman.h
4550 check_header sys/param.h
4551 check_header sys/resource.h
4552 check_header sys/select.h
4553 check_header sys/time.h
4554 check_header sys/un.h
4555 check_header unistd.h
4556 check_header valgrind/valgrind.h
4557 check_header vdpau/vdpau.h
4558 check_header vdpau/vdpau_x11.h
4559 check_header VideoDecodeAcceleration/VDADecoder.h
4560 check_header windows.h
4561 check_header X11/extensions/XvMClib.h
4562
4563 # it seems there are versions of clang in some distros that try to use the
4564 # gcc headers, which explodes for stdatomic
4565 # so we also check that atomics actually work here
4566 check_builtin stdatomic_h stdatomic.h "atomic_int foo; atomic_store(&foo, 0)"
4567
4568 check_lib "windows.h shellapi.h" CommandLineToArgvW   -lshell32
4569 check_lib "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
4570 check_lib "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
4571
4572 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4573
4574 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4575 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4576 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4577
4578 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
4579 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
4580 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
4581 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
4582 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
4583
4584 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
4585
4586 if ! disabled w32threads && ! enabled pthreads; then
4587     check_func_headers "windows.h process.h" _beginthreadex &&
4588         enable w32threads || disable w32threads
4589 fi
4590
4591 # check for some common methods of building with pthread support
4592 # do this before the optional library checks as some of them require pthreads
4593 if ! disabled pthreads && ! enabled w32threads; then
4594     enable pthreads
4595     if check_func pthread_join -pthread; then
4596         add_cflags -pthread
4597         add_extralibs -pthread
4598     elif check_func pthread_join -pthreads; then
4599         add_cflags -pthreads
4600         add_extralibs -pthreads
4601     elif check_func pthread_join -lpthreadGC2; then
4602         add_extralibs -lpthreadGC2
4603     elif check_lib pthread.h pthread_join -lpthread; then
4604         :
4605     elif ! check_func pthread_join; then
4606         disable pthreads
4607     fi
4608 fi
4609
4610 enabled pthreads &&
4611     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
4612
4613 disabled  zlib || check_lib  zlib.h      zlibVersion -lz   || disable  zlib
4614 disabled bzlib || check_lib bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4615
4616 check_lib math.h sin -lm && LIBM="-lm"
4617
4618 atan2f_args=2
4619 ldexpf_args=2
4620 powf_args=2
4621
4622 for func in $MATH_FUNCS; do
4623     eval check_mathfunc $func \${${func}_args:-1}
4624 done
4625
4626 # these are off by default, so fail if requested and not available
4627 enabled avisynth          && { check_lib "avisynth/avisynth_c.h windows.h" LoadLibrary ||
4628                                check_lib "avxsynth/avxsynth_c.h dlfcn.h" dlopen -ldl   ||
4629                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4630 enabled cuda              && check_lib cuda.h cuInit -lcuda
4631 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4632 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4633 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4634 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4635 enabled libfaac           && require libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4636 enabled libfdk_aac        && require_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4637 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4638 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4639 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4640                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4641                                done || die "ERROR: libgsm not found"; }
4642 enabled libhdcd           && require_pkg_config libhdcd "hdcd/hdcd_simple.h" hdcd_new
4643 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4644 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
4645 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
4646 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4647 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
4648 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4649 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4650 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4651 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
4652 enabled libopenjpeg       && { check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4653                                require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; }
4654 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4655 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4656 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4657 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4658 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
4659 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
4660 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4661 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4662 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4663 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4664 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4665 enabled libvpx            && require_pkg_config "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version && {
4666     enabled libvpx_vp8_decoder && {
4667         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
4668             disable libvpx_vp8_decoder;
4669     }
4670     enabled libvpx_vp8_encoder && {
4671         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
4672             disable libvpx_vp8_encoder;
4673     }
4674     enabled libvpx_vp9_decoder && {
4675         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
4676             disable libvpx_vp9_decoder;
4677     }
4678     enabled libvpx_vp9_encoder && {
4679         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
4680             disable libvpx_vp9_encoder;
4681     }
4682     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
4683         die "libvpx enabled but no supported decoders found"
4684     fi
4685 }
4686 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4687 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4688 enabled libx264           && require_pkg_config x264 "stdint.h x264.h" x264_encoder_encode &&
4689                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4690                                die "ERROR: libx264 version must be >= 0.118."; } &&
4691                              { check_cpp_condition x264.h "X264_MPEG2" &&
4692                                enable libx262; }
4693 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
4694                              { check_cpp_condition x265.h "X265_BUILD >= 57" ||
4695                                die "ERROR: libx265 version must be >= 57."; }
4696 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
4697 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4698 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4699                                 { ! enabled cross_compile && {
4700                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
4701                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
4702                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
4703                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
4704                                die "ERROR: mmal not found"; }
4705 enabled mmal && check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"
4706 enabled omx_rpi && enable omx
4707 enabled omx               && { check_header OMX_Core.h ||
4708                                 { ! enabled cross_compile && enabled omx_rpi && {
4709                                     add_cflags -isystem/opt/vc/include/IL ; }
4710                                 check_header OMX_Core.h ; } ||
4711                                die "ERROR: OpenMAX IL headers not found"; }
4712 enabled openssl           && { { check_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
4713                                  check_pkg_config openssl openssl/ssl.h SSL_library_init; } && {
4714                                add_cflags $openssl_cflags && add_extralibs $openssl_libs; }||
4715                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4716                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4717                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4718                                die "ERROR: openssl not found"; }
4719
4720 if enabled gnutls; then
4721     { check_lib gmp.h mpz_export -lgmp && enable gmp; } ||
4722     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4723 fi
4724
4725 # libdc1394 check
4726 if enabled libdc1394; then
4727     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
4728         enable libdc1394_2; } ||
4729     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4730         enable libdc1394_1; } ||
4731     die "ERROR: No version of libdc1394 found "
4732 fi
4733
4734 if enabled nvenc; then
4735     check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."
4736     check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6" ||
4737         die "ERROR: NVENC API version 5 or older is not supported"
4738 fi
4739
4740 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4741     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4742     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4743     enable sdl
4744 fi
4745
4746 ! disabled pod2man   && check_cmd pod2man --help     && enable pod2man   || disable pod2man
4747 ! disabled texi2html && check_cmd texi2html -version && enable texi2html || disable texi2html
4748
4749 check_header linux/fb.h
4750 check_header linux/videodev2.h
4751 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4752
4753 check_header AVFoundation/AVFoundation.h &&
4754     check_objcflags -fobjc-arc &&
4755     add_extralibs -framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia ||
4756     disable AVFoundation_AVFoundation_h
4757
4758 check_header sys/videoio.h
4759
4760 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4761 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4762 # w32api 3.12 had it defined wrong
4763 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4764
4765 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4766 { check_header dev/bktr/ioctl_meteor.h &&
4767   check_header dev/bktr/ioctl_bt848.h; } ||
4768 { check_header machine/ioctl_meteor.h &&
4769   check_header machine/ioctl_bt848.h; } ||
4770 { check_header dev/video/meteor/ioctl_meteor.h &&
4771   check_header dev/video/bktr/ioctl_bt848.h; } ||
4772 check_header dev/ic/bt8xx.h
4773
4774 check_header sndio.h
4775 check_header sys/soundcard.h
4776 check_header soundcard.h
4777
4778 enabled_any alsa_indev alsa_outdev &&
4779     check_lib alsa/asoundlib.h snd_pcm_htimestamp -lasound
4780
4781 enabled jack_indev && check_lib jack/jack.h jack_client_open -ljack &&
4782     check_func jack_port_get_latency_range -ljack
4783
4784 enabled_any sndio_indev sndio_outdev && check_lib sndio.h sio_open -lsndio
4785
4786 if enabled libcdio; then
4787     check_lib "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4788     check_lib "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4789     die "ERROR: No usable libcdio/cdparanoia found"
4790 fi
4791
4792 if enabled libxcb; then
4793     check_pkg_config xcb-shape xcb/shape.h xcb_shape_rectangles || {
4794         enabled libxcb && die "ERROR: libxcb not found";
4795     } && enable libxcb
4796
4797     disabled libxcb_shm ||
4798         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
4799             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
4800         } && check_header sys/shm.h && enable libxcb_shm
4801
4802     disabled libxcb_xfixes ||
4803         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
4804             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
4805         } && enable libxcb_xfixes
4806
4807     add_cflags "$xcb_shape_cflags $xcb_event_cflags $xcb_shm_cflags $xcb_xfixes_cflags"
4808     add_extralibs "$xcb_shape_libs $xcb_event_libs $xcb_shm_libs $xcb_xfixes_libs"
4809 fi
4810
4811 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4812
4813 enabled vaapi &&
4814     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
4815     disable vaapi
4816
4817 enabled vaapi &&
4818     check_lib "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
4819     enable vaapi_drm
4820
4821 enabled vdpau &&
4822     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4823     disable vdpau
4824
4825 enabled_any vaapi vdpau && check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4826
4827 enabled vaapi && enabled xlib &&
4828     check_lib "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
4829     enable vaapi_x11
4830
4831 enabled vdpau && enabled xlib &&
4832     check_lib "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4833     enable vdpau_x11
4834
4835 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4836
4837 # add some useful compiler flags if supported
4838 check_cflags -Wdeclaration-after-statement
4839 check_cflags -Wall
4840 check_cflags -Wdisabled-optimization