configure: check for stdatomic.h
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken Libav."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --prefix=PREFIX          install in PREFIX [$prefix]
82   --bindir=DIR             install binaries in DIR [PREFIX/bin]
83   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
84   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
85   --libdir=DIR             install libs in DIR [PREFIX/lib]
86   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
87   --incdir=DIR             install includes in DIR [PREFIX/include]
88   --mandir=DIR             install man page in DIR [PREFIX/share/man]
89   --enable-rpath           use rpath when linking programs [USE WITH CARE]
90
91 Licensing options:
92   --enable-gpl             allow use of GPL code, the resulting libs
93                            and binaries will be under GPL [no]
94   --enable-version3        upgrade (L)GPL to version 3 [no]
95   --enable-nonfree         allow use of nonfree code, the resulting libs
96                            and binaries will be unredistributable [no]
97
98 Configuration options:
99   --disable-static         do not build static libraries [no]
100   --enable-shared          build shared libraries [no]
101   --enable-small           optimize for size instead of speed
102   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
103   --enable-gray            enable full grayscale support (slower color)
104   --disable-swscale-alpha  disable alpha channel support in swscale
105   --disable-all            disable building components, libraries and programs
106
107 Program options:
108   --disable-programs       do not build command line programs
109   --disable-avconv         disable avconv build
110   --disable-avplay         disable avplay build
111   --disable-avprobe        disable avprobe build
112   --disable-avserver       deprecated, does nothing
113
114 Component options:
115   --disable-doc            do not build documentation
116   --disable-pod2man        do not build manual pages
117   --disable-texi2html      do not build HTML documentation
118   --disable-avdevice       disable libavdevice build
119   --disable-avcodec        disable libavcodec build
120   --disable-avformat       disable libavformat build
121   --disable-avutil         disable libavutil build
122   --disable-swscale        disable libswscale build
123   --disable-avfilter       disable video filter support [no]
124   --disable-avresample     disable libavresample build [no]
125   --disable-pthreads       disable pthreads [auto]
126   --disable-w32threads     disable Win32 threads [auto]
127   --disable-network        disable network support [no]
128   --disable-dct            disable DCT code
129   --disable-error-resilience disable error resilience code
130   --disable-lsp            disable LSP code
131   --disable-lzo            disable LZO decoder code
132   --disable-mdct           disable MDCT code
133   --disable-rdft           disable RDFT code
134   --disable-fft            disable FFT code
135   --disable-faan           disable floating point AAN (I)DCT code
136
137 Individual component options:
138   --disable-everything     disable all components listed below
139   --disable-encoder=NAME   disable encoder NAME
140   --enable-encoder=NAME    enable encoder NAME
141   --disable-encoders       disable all encoders
142   --disable-decoder=NAME   disable decoder NAME
143   --enable-decoder=NAME    enable decoder NAME
144   --disable-decoders       disable all decoders
145   --disable-hwaccel=NAME   disable hwaccel NAME
146   --enable-hwaccel=NAME    enable hwaccel NAME
147   --disable-hwaccels       disable all hwaccels
148   --disable-muxer=NAME     disable muxer NAME
149   --enable-muxer=NAME      enable muxer NAME
150   --disable-muxers         disable all muxers
151   --disable-demuxer=NAME   disable demuxer NAME
152   --enable-demuxer=NAME    enable demuxer NAME
153   --disable-demuxers       disable all demuxers
154   --enable-parser=NAME     enable parser NAME
155   --disable-parser=NAME    disable parser NAME
156   --disable-parsers        disable all parsers
157   --enable-bsf=NAME        enable bitstream filter NAME
158   --disable-bsf=NAME       disable bitstream filter NAME
159   --disable-bsfs           disable all bitstream filters
160   --enable-protocol=NAME   enable protocol NAME
161   --disable-protocol=NAME  disable protocol NAME
162   --disable-protocols      disable all protocols
163   --enable-indev=NAME      enable input device NAME
164   --disable-indev=NAME     disable input device NAME
165   --disable-indevs         disable input devices
166   --enable-outdev=NAME     enable output device NAME
167   --disable-outdev=NAME    disable output device NAME
168   --disable-outdevs        disable output devices
169   --disable-devices        disable all devices
170   --enable-filter=NAME     enable filter NAME
171   --disable-filter=NAME    disable filter NAME
172   --disable-filters        disable all filters
173
174 External library support:
175
176   Using any of the following switches will allow Libav to link to the
177   corresponding external library. All the components depending on that library
178   will become enabled, if all their other dependencies are met and they are not
179   explicitly disabled. E.g. --enable-libwavpack will enable linking to
180   libwavpack and allow the libwavpack encoder to be built, unless it is
181   specifically disabled with --disable-encoder=libwavpack.
182
183   Note that only the system libraries are auto-detected. All the other external
184   libraries must be explicitly enabled.
185
186   Also note that the following help text describes the purpose of the libraries
187   themselves, not all their features will necessarily be usable by Libav.
188
189   --enable-avisynth          video frameserver
190   --enable-bzlib             bzip2 compression [autodetect]
191   --enable-frei0r            video filtering plugins
192   --enable-gnutls            crypto
193   --enable-libbs2b           Bauer stereophonic-to-binaural DSP
194   --enable-libcdio           audio CD input
195   --enable-libdc1394         IEEE 1394/Firewire camera input
196   --enable-libdcadec         DCA audio decoding
197   --enable-libfaac           AAC audio encoding
198   --enable-libfdk-aac        AAC audio encoding/decoding
199   --enable-libfontconfig     font configuration and management
200   --enable-libfreetype       font rendering
201   --enable-libgsm            GSM audio encoding/decoding
202   --enable-libhdcd           HDCD decoding filter
203   --enable-libilbc           ILBC audio encoding/decoding
204   --enable-libkvazaar        HEVC video encoding
205   --enable-libmp3lame        MP3 audio encoding
206   --enable-libopencore-amrnb AMR-NB audio encoding/decoding
207   --enable-libopencore-amrwb AMR-WB audio decoding
208   --enable-libopencv         computer vision
209   --enable-libopenh264       H.264 video encoding/decoding
210   --enable-libopenjpeg       JPEG 2000 image encoding/decoding
211   --enable-libopus           Opus audio encoding/decoding
212   --enable-libpulse          Pulseaudio sound server
213   --enable-librtmp           RTMP streaming
214   --enable-libschroedinger   Dirac video encoding/decoding
215   --enable-libsnappy         snappy compression
216   --enable-libspeex          Speex audio encoding/decoding
217   --enable-libtheora         Theora video encoding/decoding
218   --enable-libtwolame        MP2 audio encoding
219   --enable-libvo-aacenc      AAC audio encoding
220   --enable-libvo-amrwbenc    AMR-WB audio encoding
221   --enable-libvorbis         Vorbis audio encoding/decoding
222   --enable-libvpx            VP* video encoding/decoding
223   --enable-libwavpack        Wavpack audio encoding/decoding
224   --enable-libwebp           WebP image encoding/decoding
225   --enable-libx264           H.264 video encoding
226   --enable-libx265           HEVC video encoding
227   --enable-libxavs           Chinese AVS video encoding
228   --enable-libxcb            X window system protocol communication
229   --enable-libxcb-shm        X11 shm communication [auto]
230   --enable-libxcb-xfixes     X11 mouse rendering [auto]
231   --enable-libxvid           MPEG-4 ASP video encoding
232   --enable-openssl           crypto
233   --enable-zlib              compression [autodetect]
234
235   The following libraries provide various hardware acceleration features:
236   --enable-cuda    Nvidia CUDA (dynamically linked)
237   --enable-d3d11va Microsoft Direct3D 11 video acceleration [auto]
238   --enable-dxva2   Microsoft DirectX 9 video acceleration [auto]
239   --enable-libmfx  Intel MediaSDK (AKA Quick Sync Video)
240   --enable-libnpp  Nvidia CUDA processing
241   --enable-mmal    Broadcom Multi-Media Abstraction Layer (Raspberry Pi)
242   --enable-nvenc   Nvidia video encoding
243   --enable-omx     OpenMAX IL
244   --enable-omx-rpi OpenMAX IL for Raspberry Pi
245   --enable-vaapi   Video Acceleration API (mainly Unix/Intel)
246   --enable-vda     Apple Video Decode Acceleration [auto]
247   --enable-vdpau   Nvidia Video Decode and Presentation API for Unix [auto]
248
249 Toolchain options:
250   --arch=ARCH              select architecture [$arch]
251   --cpu=CPU                select the minimum required CPU (affects
252                            instruction selection, may crash on older CPUs)
253   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
254   --enable-cross-compile   assume a cross-compiler is used
255   --sysroot=PATH           root of cross-build tree
256   --sysinclude=PATH        location of cross-build system headers
257   --target-os=OS           compiler targets OS [$target_os]
258   --target-exec=CMD        command to run executables on target
259   --target-path=DIR        path to view of build directory on target
260   --target-samples=DIR     path to samples directory on target
261   --toolchain=NAME         set tool defaults according to NAME
262   --nm=NM                  use nm tool
263   --ar=AR                  use archive tool AR [$ar_default]
264   --as=AS                  use assembler AS [$as_default]
265   --cc=CC                  use C compiler CC [$cc_default]
266   --objcc=OCC              use ObjC compiler OCC [$cc_default]
267   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
268   --ld=LD                  use linker LD
269   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
270   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
271   --host-cc=HOSTCC         use host C compiler HOSTCC
272   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
273   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
274   --host-ld=HOSTLD         use host linker HOSTLD
275   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
276   --host-libs=HLIBS        use libs HLIBS when linking for host
277   --host-os=OS             compiler host OS [$target_os]
278   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
279   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
280   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
281   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
282   --extra-libs=ELIBS       add ELIBS [$ELIBS]
283   --extra-version=STRING   version string suffix []
284   --optflags=OPTFLAGS      override optimization-related compiler flags
285   --build-suffix=SUFFIX    library name suffix []
286   --enable-pic             build position-independent code
287   --enable-thumb           compile for Thumb instruction set
288   --enable-lto             use link-time optimization
289   --env="ENV=override"     override the environment variables
290
291 Advanced options (experts only):
292   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
293   --custom-allocator=NAME  use a supported custom allocator
294   --disable-symver         disable symbol versioning
295   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
296   --disable-safe-bitstream-reader
297                            disable buffer boundary checking in bitreaders
298                            (faster, but may crash)
299   --enable-sram            allow use of on-chip SRAM
300
301 Optimization options (experts only):
302   --disable-asm            disable all assembly optimizations
303   --disable-altivec        disable AltiVec optimizations
304   --disable-vsx            disable VSX optimizations
305   --disable-power8         disable POWER8 optimizations
306   --disable-amd3dnow       disable 3DNow! optimizations
307   --disable-amd3dnowext    disable 3DNow! extended optimizations
308   --disable-mmx            disable MMX optimizations
309   --disable-mmxext         disable MMXEXT optimizations
310   --disable-sse            disable SSE optimizations
311   --disable-sse2           disable SSE2 optimizations
312   --disable-sse3           disable SSE3 optimizations
313   --disable-ssse3          disable SSSE3 optimizations
314   --disable-sse4           disable SSE4 optimizations
315   --disable-sse42          disable SSE4.2 optimizations
316   --disable-avx            disable AVX optimizations
317   --disable-xop            disable XOP optimizations
318   --disable-fma3           disable FMA3 optimizations
319   --disable-fma4           disable FMA4 optimizations
320   --disable-avx2           disable AVX2 optimizations
321   --disable-armv5te        disable armv5te optimizations
322   --disable-armv6          disable armv6 optimizations
323   --disable-armv6t2        disable armv6t2 optimizations
324   --disable-vfp            disable VFP optimizations
325   --disable-neon           disable NEON optimizations
326   --disable-inline-asm     disable use of inline assembly
327   --disable-yasm           disable use of nasm/yasm assembly
328
329 Developer options (useful when working on Libav itself):
330   --disable-debug          disable debugging symbols
331   --enable-debug=LEVEL     set the debug level [$debuglevel]
332   --disable-optimizations  disable compiler optimizations
333   --enable-extra-warnings  enable more compiler warnings
334   --samples=PATH           location of test samples for FATE, if not set use
335                            \$LIBAV_SAMPLES at make invocation time.
336   --enable-neon-clobber-test check NEON registers for clobbering (should be
337                            used only for debugging purposes)
338   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
339                            should be used only for debugging purposes)
340   --enable-random          randomly enable/disable components
341   --disable-random
342   --enable-random=LIST     randomly enable/disable specific components or
343   --disable-random=LIST    component groups. LIST is a comma-separated list
344                            of NAME[:PROB] entries where NAME is a component
345                            (group) and PROB the probability associated with
346                            NAME (default 0.5).
347   --random-seed=VALUE      seed value for --enable/disable-random
348   --disable-valgrind-backtrace do not print a backtrace under Valgrind
349                            (only applies to --disable-optimizations builds)
350
351 NOTE: Object files are built at the place where configure is launched.
352 EOF
353   exit 0
354 }
355
356 quotes='""'
357
358 log(){
359     echo "$@" >> $logfile
360 }
361
362 log_file(){
363     log BEGIN $1
364     i=1
365     while read line; do
366         printf '%5s   %s\n' "${i}" "${line}"
367         i=$(($i+1))
368     done < $1 >> $logfile
369     log END $1
370 }
371
372 echolog(){
373     log "$@"
374     echo "$@"
375 }
376
377 warn(){
378     log "WARNING: $*"
379     WARNINGS="${WARNINGS}WARNING: $*\n"
380 }
381
382 die(){
383     echolog "$@"
384     cat <<EOF
385
386 If you think configure made a mistake, make sure you are using the latest
387 version from Git.  If the latest version fails, report the problem to the
388 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
389 EOF
390     if disabled logging; then
391         cat <<EOF
392 Rerun configure with logging enabled (do not use --disable-logging), and
393 include the log this produces with your report.
394 EOF
395     else
396         cat <<EOF
397 Include the log file "$logfile" produced by configure as this will help
398 solving the problem.
399 EOF
400     fi
401     exit 1
402 }
403
404 # Avoid locale weirdness, besides we really just want to translate ASCII.
405 toupper(){
406     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
407 }
408
409 tolower(){
410     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
411 }
412
413 c_escape(){
414     echo "$*" | sed 's/["\\]/\\\0/g'
415 }
416
417 sh_quote(){
418     v=$(echo "$1" | sed "s/'/'\\\\''/g")
419     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
420     echo "$v"
421 }
422
423 cleanws(){
424     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
425 }
426
427 filter(){
428     pat=$1
429     shift
430     for v; do
431         eval "case $v in $pat) echo $v ;; esac"
432     done
433 }
434
435 filter_out(){
436     pat=$1
437     shift
438     for v; do
439         eval "case $v in $pat) ;; *) echo $v ;; esac"
440     done
441 }
442
443 map(){
444     m=$1
445     shift
446     for v; do eval $m; done
447 }
448
449 add_suffix(){
450     suffix=$1
451     shift
452     for v; do echo ${v}${suffix}; done
453 }
454
455 set_all(){
456     value=$1
457     shift
458     for var in $*; do
459         eval $var=$value
460     done
461 }
462
463 set_weak(){
464     value=$1
465     shift
466     for var; do
467         eval : \${$var:=$value}
468     done
469 }
470
471 sanitize_var_name(){
472     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
473 }
474
475 set_safe(){
476     var=$1
477     shift
478     eval $(sanitize_var_name "$var")='$*'
479 }
480
481 get_safe(){
482     eval echo \$$(sanitize_var_name "$1")
483 }
484
485 pushvar(){
486     for pvar in $*; do
487         eval level=\${${pvar}_level:=0}
488         eval ${pvar}_${level}="\$$pvar"
489         eval ${pvar}_level=$(($level+1))
490     done
491 }
492
493 popvar(){
494     for pvar in $*; do
495         eval level=\${${pvar}_level:-0}
496         test $level = 0 && continue
497         eval level=$(($level-1))
498         eval $pvar="\${${pvar}_${level}}"
499         eval ${pvar}_level=$level
500         eval unset ${pvar}_${level}
501     done
502 }
503
504 enable(){
505     set_all yes $*
506 }
507
508 disable(){
509     set_all no $*
510 }
511
512 enable_weak(){
513     set_weak yes $*
514 }
515
516 disable_weak(){
517     set_weak no $*
518 }
519
520 enable_safe(){
521     for var; do
522         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
523     done
524 }
525
526 disable_safe(){
527     for var; do
528         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
529     done
530 }
531
532 do_enable_deep(){
533     for var; do
534         enabled $var && continue
535         eval sel="\$${var}_select"
536         eval sgs="\$${var}_suggest"
537         pushvar var sgs
538         enable_deep $sel
539         popvar sgs
540         enable_deep_weak $sgs
541         popvar var
542     done
543 }
544
545 enable_deep(){
546     do_enable_deep $*
547     enable $*
548 }
549
550 enable_deep_weak(){
551     for var; do
552         disabled $var && continue
553         pushvar var
554         do_enable_deep $var
555         popvar var
556         enable_weak $var
557     done
558 }
559
560 enabled(){
561     test "${1#!}" = "$1" && op== || op=!=
562     eval test "x\$${1#!}" $op "xyes"
563 }
564
565 disabled(){
566     test "${1#!}" = "$1" && op== || op=!=
567     eval test "x\$${1#!}" $op "xno"
568 }
569
570 enabled_all(){
571     for opt; do
572         enabled $opt || return 1
573     done
574 }
575
576 disabled_all(){
577     for opt; do
578         disabled $opt || return 1
579     done
580 }
581
582 enabled_any(){
583     for opt; do
584         enabled $opt && return 0
585     done
586 }
587
588 disabled_any(){
589     for opt; do
590         disabled $opt && return 0
591     done
592     return 1
593 }
594
595 set_default(){
596     for opt; do
597         eval : \${$opt:=\$${opt}_default}
598     done
599 }
600
601 is_in(){
602     value=$1
603     shift
604     for var in $*; do
605         [ $var = $value ] && return 0
606     done
607     return 1
608 }
609
610 do_check_deps(){
611     for cfg; do
612         cfg="${cfg#!}"
613         enabled ${cfg}_checking && die "Circular dependency for $cfg."
614         disabled ${cfg}_checking && continue
615         enable ${cfg}_checking
616         append allopts $cfg
617
618         eval dep_all="\$${cfg}_deps"
619         eval dep_any="\$${cfg}_deps_any"
620         eval dep_sel="\$${cfg}_select"
621         eval dep_sgs="\$${cfg}_suggest"
622         eval dep_ifa="\$${cfg}_if"
623         eval dep_ifn="\$${cfg}_if_any"
624
625         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
626         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
627         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
628
629         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
630         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
631         enabled_all  $dep_all || disable $cfg
632         enabled_any  $dep_any || disable $cfg
633         disabled_any $dep_sel && disable $cfg
634
635         if enabled $cfg; then
636             enable_deep $dep_sel
637             enable_deep_weak $dep_sgs
638         fi
639
640         disable ${cfg}_checking
641     done
642 }
643
644 check_deps(){
645     unset allopts
646
647     do_check_deps "$@"
648
649     for cfg in $allopts; do
650         enabled $cfg || continue
651         eval dep_extralibs="\$${cfg}_extralibs"
652         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
653     done
654 }
655
656 print_config(){
657     pfx=$1
658     files=$2
659     shift 2
660     map 'eval echo "$v \${$v:-no}"' "$@" |
661     awk "BEGIN { split(\"$files\", files) }
662         {
663             c = \"$pfx\" toupper(\$1);
664             v = \$2;
665             sub(/yes/, 1, v);
666             sub(/no/,  0, v);
667             for (f in files) {
668                 file = files[f];
669                 if (file ~ /\\.h\$/) {
670                     printf(\"#define %s %d\\n\", c, v) >>file;
671                 } else if (file ~ /\\.asm\$/) {
672                     printf(\"%%define %s %d\\n\", c, v) >>file;
673                 } else if (file ~ /\\.mak\$/) {
674                     n = -v ? \"\" : \"!\";
675                     printf(\"%s%s=yes\\n\", n, c) >>file;
676                 }
677             }
678         }"
679 }
680
681 print_enabled(){
682     suf=$1
683     shift
684     for v; do
685         enabled $v && printf "%s\n" ${v%$suf}
686     done
687 }
688
689 append(){
690     var=$1
691     shift
692     eval "$var=\"\$$var $*\""
693 }
694
695 prepend(){
696     var=$1
697     shift
698     eval "$var=\"$* \$$var\""
699 }
700
701 unique(){
702     var=$1
703     uniq_list=""
704     for tok in $(eval echo \$$var); do
705         uniq_list="$(filter_out $tok $uniq_list) $tok"
706     done
707     eval "$var=\"${uniq_list}\""
708 }
709
710 add_cppflags(){
711     append CPPFLAGS "$@"
712 }
713
714 add_cflags(){
715     append CFLAGS $($cflags_filter "$@")
716 }
717
718 add_asflags(){
719     append ASFLAGS $($asflags_filter "$@")
720 }
721
722 add_objcflags(){
723     append OBJCFLAGS $($objcflags_filter "$@")
724 }
725
726 add_ldflags(){
727     append LDFLAGS $($ldflags_filter "$@")
728 }
729
730 add_ldexeflags(){
731     append LDEXEFLAGS $($ldflags_filter "$@")
732 }
733
734 add_stripflags(){
735     append STRIPFLAGS "$@"
736 }
737
738 add_extralibs(){
739     prepend extralibs $($ldflags_filter "$@")
740 }
741
742 add_host_cppflags(){
743     append host_cppflags "$@"
744 }
745
746 add_host_cflags(){
747     append host_cflags $($host_cflags_filter "$@")
748 }
749
750 add_host_ldflags(){
751     append host_ldflags $($host_ldflags_filter "$@")
752 }
753
754 add_compat(){
755     append compat_objs $1
756     shift
757     map 'add_cppflags -D$v' "$@"
758 }
759
760 check_cmd(){
761     log "$@"
762     "$@" >> $logfile 2>&1
763 }
764
765 cc_o(){
766     eval printf '%s\\n' $CC_O
767 }
768
769 cc_e(){
770     eval printf '%s\\n' $CC_E
771 }
772
773 check_cc(){
774     log check_cc "$@"
775     cat > $TMPC
776     log_file $TMPC
777     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
778 }
779
780 check_objcc(){
781     log check_objcc "$@"
782     cat > $TMPC
783     log_file $TMPC
784     check_cmd $objcc $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPC
785 }
786
787 check_cpp(){
788     log check_cpp "$@"
789     cat > $TMPC
790     log_file $TMPC
791     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
792 }
793
794 as_o(){
795     eval printf '%s\\n' $AS_O
796 }
797
798 check_as(){
799     log check_as "$@"
800     cat > $TMPS
801     log_file $TMPS
802     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
803 }
804
805 check_inline_asm(){
806     log check_inline_asm "$@"
807     name="$1"
808     code="$2"
809     shift 2
810     disable $name
811     check_cc "$@" <<EOF && enable $name
812 void foo(void){ __asm__ volatile($code); }
813 EOF
814 }
815
816 check_insn(){
817     log check_insn "$@"
818     check_inline_asm ${1}_inline "\"$2\""
819     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
820 }
821
822 check_yasm(){
823     log check_yasm "$@"
824     echo "$1" > $TMPS
825     log_file $TMPS
826     shift 1
827     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
828 }
829
830 ld_o(){
831     eval printf '%s\\n' $LD_O
832 }
833
834 check_ld(){
835     log check_ld "$@"
836     flags=$(filter_out '-l*' "$@")
837     libs=$(filter '-l*' "$@")
838     check_cc $($cflags_filter $flags) || return
839     flags=$($ldflags_filter $flags)
840     libs=$($ldflags_filter $libs)
841     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
842 }
843
844 print_include(){
845     hdr=$1
846     test "${hdr%.h}" = "${hdr}" &&
847         echo "#include $hdr"    ||
848         echo "#include <$hdr>"
849 }
850
851 check_code(){
852     log check_code "$@"
853     check=$1
854     headers=$2
855     code=$3
856     shift 3
857     {
858         for hdr in $headers; do
859             print_include $hdr
860         done
861         echo "int main(void) { $code; return 0; }"
862     } | check_$check "$@"
863 }
864
865 check_cppflags(){
866     log check_cppflags "$@"
867     check_cc "$@" <<EOF && append CPPFLAGS "$@"
868 int x;
869 EOF
870 }
871
872 test_cflags(){
873     log test_cflags "$@"
874     set -- $($cflags_filter "$@")
875     check_cc "$@" <<EOF
876 int x;
877 EOF
878 }
879
880 check_cflags(){
881     log check_cflags "$@"
882     test_cflags "$@" && add_cflags "$@"
883 }
884
885 test_objcflags(){
886     log test_cflags "$@"
887     set -- $($cflags_filter "$@")
888     check_objcc "$@" <<EOF
889 int x;
890 EOF
891 }
892
893 check_objcflags(){
894     log check_cflags "$@"
895     test_objcflags "$@" && add_objcflags "$@"
896 }
897
898 test_ldflags(){
899     log test_ldflags "$@"
900     check_ld "$@" <<EOF
901 int main(void){ return 0; }
902 EOF
903 }
904
905 check_ldflags(){
906     log check_ldflags "$@"
907     test_ldflags "$@" && add_ldflags "$@"
908 }
909
910 test_stripflags(){
911     log test_stripflags "$@"
912     # call check_cc to get a fresh TMPO
913     check_cc <<EOF
914 int main(void) { return 0; }
915 EOF
916     check_cmd $strip $STRIPFLAGS "$@" $TMPO
917 }
918
919 check_stripflags(){
920     log check_stripflags "$@"
921     test_stripflags "$@" && add_stripflags "$@"
922 }
923
924 check_header(){
925     log check_header "$@"
926     header=$1
927     shift
928     disable_safe $header
929     check_cpp "$@" <<EOF && enable_safe $header
930 #include <$header>
931 int x;
932 EOF
933 }
934
935 check_func(){
936     log check_func "$@"
937     func=$1
938     shift
939     disable $func
940     check_ld "$@" <<EOF && enable $func
941 extern int $func();
942 int main(void){ $func(); }
943 EOF
944 }
945
946 check_mathfunc(){
947     log check_mathfunc "$@"
948     func=$1
949     narg=$2
950     shift 2
951     test $narg = 2 && args="f, g" || args="f"
952     disable $func
953     check_ld "$@" <<EOF && enable $func
954 #include <math.h>
955 float foo(float f, float g) { return $func($args); }
956 int main(void){ return 0; }
957 EOF
958 }
959
960 check_func_headers(){
961     log check_func_headers "$@"
962     headers=$1
963     funcs=$2
964     shift 2
965     {
966         for hdr in $headers; do
967             print_include $hdr
968         done
969         for func in $funcs; do
970             echo "long check_$func(void) { return (long) $func; }"
971         done
972         echo "int main(void) { return 0; }"
973     } | check_ld "$@" && enable $funcs && enable_safe $headers
974 }
975
976 check_cpp_condition(){
977     log check_cpp_condition "$@"
978     header=$1
979     condition=$2
980     shift 2
981     check_cpp "$@" <<EOF
982 #include <$header>
983 #if !($condition)
984 #error "unsatisfied condition: $condition"
985 #endif
986 EOF
987 }
988
989 test_cflags_cpp(){
990     log test_cflags_cpp "$@"
991     flags=$1
992     condition=$2
993     shift 2
994     set -- $($cflags_filter "$flags")
995     check_cpp "$@" <<EOF
996 #if !($condition)
997 #error "unsatisfied condition: $condition"
998 #endif
999 EOF
1000 }
1001
1002 check_lib(){
1003     log check_lib "$@"
1004     headers="$1"
1005     funcs="$2"
1006     shift 2
1007     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1008 }
1009
1010 check_pkg_config(){
1011     log check_pkg_config "$@"
1012     pkg="$1"
1013     headers="$2"
1014     funcs="$3"
1015     shift 3
1016     check_cmd $pkg_config --exists --print-errors $pkg || return
1017     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1018     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1019     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1020         set_safe "${pkg}_cflags" $pkg_cflags   &&
1021         set_safe "${pkg}_libs"   $pkg_libs
1022 }
1023
1024 check_exec(){
1025     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1026 }
1027
1028 check_exec_crash(){
1029     code=$(cat)
1030
1031     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1032     # are safe but may not be available everywhere.  Thus we use
1033     # raise(SIGTERM) instead.  The check is run in a subshell so we
1034     # can redirect the "Terminated" message from the shell.  SIGBUS
1035     # is not defined by standard C so it is used conditionally.
1036
1037     (check_exec "$@") >> $logfile 2>&1 <<EOF
1038 #include <signal.h>
1039 static void sighandler(int sig){
1040     raise(SIGTERM);
1041 }
1042 int foo(void){
1043     $code
1044 }
1045 int (*func_ptr)(void) = foo;
1046 int main(void){
1047     signal(SIGILL, sighandler);
1048     signal(SIGFPE, sighandler);
1049     signal(SIGSEGV, sighandler);
1050 #ifdef SIGBUS
1051     signal(SIGBUS, sighandler);
1052 #endif
1053     return func_ptr();
1054 }
1055 EOF
1056 }
1057
1058 check_type(){
1059     log check_type "$@"
1060     headers=$1
1061     type=$2
1062     shift 2
1063     disable_safe "$type"
1064     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1065 }
1066
1067 check_struct(){
1068     log check_struct "$@"
1069     headers=$1
1070     struct=$2
1071     member=$3
1072     shift 3
1073     disable_safe "${struct}_${member}"
1074     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1075         enable_safe "${struct}_${member}"
1076 }
1077
1078 check_builtin(){
1079     log check_builtin "$@"
1080     name=$1
1081     headers=$2
1082     builtin=$3
1083     shift 3
1084     disable "$name"
1085     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1086 }
1087
1088 check_compile_assert(){
1089     log check_compile_assert "$@"
1090     name=$1
1091     headers=$2
1092     condition=$3
1093     shift 3
1094     disable "$name"
1095     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1096 }
1097
1098 require(){
1099     name="$1"
1100     headers="$2"
1101     func="$3"
1102     shift 3
1103     check_lib "$headers" $func "$@" || die "ERROR: $name not found"
1104 }
1105
1106 require_pkg_config(){
1107     pkg="$1"
1108     check_pkg_config "$@" || die "ERROR: $pkg not found"
1109     add_cflags    $(get_safe "${pkg}_cflags")
1110     add_extralibs $(get_safe "${pkg}_libs")
1111 }
1112
1113 hostcc_e(){
1114     eval printf '%s\\n' $HOSTCC_E
1115 }
1116
1117 hostcc_o(){
1118     eval printf '%s\\n' $HOSTCC_O
1119 }
1120
1121 check_host_cc(){
1122     log check_host_cc "$@"
1123     cat > $TMPC
1124     log_file $TMPC
1125     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1126 }
1127
1128 check_host_cpp(){
1129     log check_host_cpp "$@"
1130     cat > $TMPC
1131     log_file $TMPC
1132     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1133 }
1134
1135 check_host_cppflags(){
1136     log check_host_cppflags "$@"
1137     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1138 int x;
1139 EOF
1140 }
1141
1142 check_host_cflags(){
1143     log check_host_cflags "$@"
1144     set -- $($host_cflags_filter "$@")
1145     check_host_cc "$@" <<EOF && append host_cflags "$@"
1146 int x;
1147 EOF
1148 }
1149
1150 check_host_cpp_condition(){
1151     log check_host_cpp_condition "$@"
1152     header=$1
1153     condition=$2
1154     shift 2
1155     check_host_cpp "$@" <<EOF
1156 #include <$header>
1157 #if !($condition)
1158 #error "unsatisfied condition: $condition"
1159 #endif
1160 EOF
1161 }
1162
1163 apply(){
1164     file=$1
1165     shift
1166     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1167 }
1168
1169 cp_if_changed(){
1170     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1171     mkdir -p "$(dirname $2)"
1172     $cp_f "$1" "$2"
1173 }
1174
1175 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1176 # system-dependent things.
1177
1178 AVCODEC_COMPONENTS="
1179     bsfs
1180     decoders
1181     encoders
1182     hwaccels
1183     parsers
1184 "
1185
1186 AVDEVICE_COMPONENTS="
1187     indevs
1188     outdevs
1189 "
1190 AVFILTER_COMPONENTS="
1191     filters
1192 "
1193 AVFORMAT_COMPONENTS="
1194     demuxers
1195     muxers
1196     protocols
1197 "
1198
1199 AVRESAMPLE_COMPONENTS=""
1200 AVUTIL_COMPONENTS=""
1201
1202 COMPONENT_LIST="
1203     $AVCODEC_COMPONENTS
1204     $AVDEVICE_COMPONENTS
1205     $AVFILTER_COMPONENTS
1206     $AVFORMAT_COMPONENTS
1207     $AVRESAMPLE_COMPONENTS
1208     $AVUTIL_COMPONENTS
1209 "
1210
1211 EXAMPLE_LIST="
1212     avcodec_example
1213     filter_audio_example
1214     metadata_example
1215     output_example
1216     qsvdec_example
1217     transcode_aac_example
1218 "
1219
1220 HWACCEL_LIBRARY_NONFREE_LIST="
1221     cuda
1222     libnpp
1223 "
1224 HWACCEL_LIBRARY_LIST="
1225     $HWACCEL_LIBRARY_NONFREE_LIST
1226     d3d11va
1227     dxva2
1228     libmfx
1229     mmal
1230     nvenc
1231     omx
1232     vaapi
1233     vda
1234     vdpau
1235 "
1236
1237 EXTERNAL_LIBRARY_GPL_LIST="
1238     libcdio
1239     libx264
1240     libx265
1241     libxavs
1242     libxvid
1243 "
1244
1245 EXTERNAL_LIBRARY_NONFREE_LIST="
1246     libfaac
1247     libfdk_aac
1248     openssl
1249 "
1250
1251 EXTERNAL_LIBRARY_VERSION3_LIST="
1252     libopencore_amrnb
1253     libopencore_amrwb
1254     libvo_aacenc
1255     libvo_amrwbenc
1256 "
1257
1258 EXTERNAL_LIBRARY_LIST="
1259     $EXTERNAL_LIBRARY_GPL_LIST
1260     $EXTERNAL_LIBRARY_NONFREE_LIST
1261     $EXTERNAL_LIBRARY_VERSION3_LIST
1262     avisynth
1263     bzlib
1264     frei0r
1265     gnutls
1266     libbs2b
1267     libdc1394
1268     libdcadec
1269     libfontconfig
1270     libfreetype
1271     libgsm
1272     libhdcd
1273     libilbc
1274     libkvazaar
1275     libmp3lame
1276     libopencv
1277     libopenh264
1278     libopenjpeg
1279     libopus
1280     libpulse
1281     librtmp
1282     libschroedinger
1283     libsnappy
1284     libspeex
1285     libtheora
1286     libtwolame
1287     libvorbis
1288     libvpx
1289     libwavpack
1290     libwebp
1291     libxcb
1292     libxcb_shm
1293     libxcb_xfixes
1294     zlib
1295 "
1296
1297 FEATURE_LIST="
1298     gray
1299     hardcoded_tables
1300     omx_rpi
1301     runtime_cpudetect
1302     safe_bitstream_reader
1303     shared
1304     small
1305     sram
1306     static
1307     swscale_alpha
1308 "
1309
1310 LIBRARY_LIST="
1311     avcodec
1312     avdevice
1313     avfilter
1314     avformat
1315     avresample
1316     avutil
1317     swscale
1318 "
1319
1320 LICENSE_LIST="
1321     gpl
1322     nonfree
1323     version3
1324 "
1325
1326 PROGRAM_LIST="
1327     avconv
1328     avplay
1329     avprobe
1330 "
1331
1332 SUBSYSTEM_LIST="
1333     dct
1334     doc
1335     error_resilience
1336     faan
1337     fft
1338     lsp
1339     lzo
1340     mdct
1341     network
1342     rdft
1343 "
1344
1345 CONFIG_LIST="
1346     $COMPONENT_LIST
1347     $EXAMPLE_LIST
1348     $EXTERNAL_LIBRARY_LIST
1349     $HWACCEL_LIBRARY_LIST
1350     $FEATURE_LIST
1351     $LICENSE_LIST
1352     $LIBRARY_LIST
1353     $PROGRAM_LIST
1354     $SUBSYSTEM_LIST
1355     neon_clobber_test
1356     pic
1357     pod2man
1358     texi2html
1359     thumb
1360     valgrind_backtrace
1361     xmm_clobber_test
1362 "
1363
1364 THREADS_LIST="
1365     pthreads
1366     w32threads
1367 "
1368
1369 ATOMICS_LIST="
1370     atomics_gcc
1371     atomics_suncc
1372     atomics_win32
1373 "
1374
1375 ARCH_LIST="
1376     aarch64
1377     alpha
1378     arm
1379     avr32
1380     avr32_ap
1381     avr32_uc
1382     bfin
1383     ia64
1384     m68k
1385     mips
1386     mips64
1387     parisc
1388     ppc
1389     ppc64
1390     s390
1391     sh4
1392     sparc
1393     sparc64
1394     tilegx
1395     tilepro
1396     tomi
1397     x86
1398     x86_32
1399     x86_64
1400 "
1401
1402 ARCH_EXT_LIST_ARM="
1403     armv5te
1404     armv6
1405     armv6t2
1406     armv8
1407     neon
1408     vfp
1409     vfpv3
1410 "
1411
1412 ARCH_EXT_LIST_X86_SIMD="
1413     amd3dnow
1414     amd3dnowext
1415     avx
1416     avx2
1417     fma3
1418     fma4
1419     mmx
1420     mmxext
1421     sse
1422     sse2
1423     sse3
1424     sse4
1425     sse42
1426     ssse3
1427     xop
1428 "
1429
1430 ARCH_EXT_LIST_PPC="
1431     altivec
1432     dcbzl
1433     ldbrx
1434     power8
1435     ppc4xx
1436     vsx
1437 "
1438
1439 ARCH_EXT_LIST_X86="
1440     $ARCH_EXT_LIST_X86_SIMD
1441     cpunop
1442     i686
1443 "
1444
1445 ARCH_EXT_LIST_MIPS="
1446     loongson
1447     mips32r1
1448     mips64r1
1449     mips32r2
1450     mips64r2
1451     mips32r6
1452     mips64r6
1453 "
1454
1455 ARCH_EXT_LIST="
1456     $ARCH_EXT_LIST_ARM
1457     $ARCH_EXT_LIST_MIPS
1458     $ARCH_EXT_LIST_PPC
1459     $ARCH_EXT_LIST_X86
1460     vis
1461 "
1462
1463 ARCH_FEATURES="
1464     aligned_stack
1465     fast_64bit
1466     fast_clz
1467     fast_cmov
1468     local_aligned_8
1469     local_aligned_16
1470     local_aligned_32
1471     simd_align_16
1472     simd_align_32
1473 "
1474
1475 BUILTIN_LIST="
1476     atomic_cas_ptr
1477     machine_rw_barrier
1478     MemoryBarrier
1479     mm_empty
1480     rdtsc
1481     sem_timedwait
1482     sync_val_compare_and_swap
1483 "
1484 HAVE_LIST_CMDLINE="
1485     inline_asm
1486     symver
1487     yasm
1488 "
1489
1490 HAVE_LIST_PUB="
1491     bigendian
1492     fast_unaligned
1493 "
1494
1495 HEADERS_LIST="
1496     AVFoundation_AVFoundation_h
1497     alsa_asoundlib_h
1498     altivec_h
1499     arpa_inet_h
1500     cdio_paranoia_h
1501     cdio_paranoia_paranoia_h
1502     dispatch_dispatch_h
1503     dev_bktr_ioctl_bt848_h
1504     dev_bktr_ioctl_meteor_h
1505     dev_ic_bt8xx_h
1506     dev_video_bktr_ioctl_bt848_h
1507     dev_video_meteor_ioctl_meteor_h
1508     direct_h
1509     dlfcn_h
1510     d3d11_h
1511     dxva_h
1512     gsm_h
1513     io_h
1514     mach_mach_time_h
1515     machine_ioctl_bt848_h
1516     machine_ioctl_meteor_h
1517     malloc_h
1518     poll_h
1519     sndio_h
1520     soundcard_h
1521     stdatomic_h
1522     sys_mman_h
1523     sys_param_h
1524     sys_resource_h
1525     sys_select_h
1526     sys_soundcard_h
1527     sys_time_h
1528     sys_un_h
1529     sys_videoio_h
1530     unistd_h
1531     valgrind_valgrind_h
1532     windows_h
1533     winsock2_h
1534 "
1535
1536 INTRINSICS_LIST="
1537     intrinsics_neon
1538 "
1539
1540 MATH_FUNCS="
1541     atanf
1542     atan2f
1543     cbrtf
1544     cosf
1545     exp2
1546     exp2f
1547     expf
1548     isinf
1549     isnan
1550     ldexpf
1551     llrint
1552     llrintf
1553     log2
1554     log2f
1555     log10f
1556     lrint
1557     lrintf
1558     powf
1559     rint
1560     round
1561     roundf
1562     sinf
1563     trunc
1564     truncf
1565 "
1566
1567 SYSTEM_FUNCS="
1568     aligned_malloc
1569     clock_gettime
1570     closesocket
1571     CommandLineToArgvW
1572     CoTaskMemFree
1573     CryptGenRandom
1574     dlopen
1575     fcntl
1576     flt_lim
1577     fork
1578     getaddrinfo
1579     gethrtime
1580     getopt
1581     GetProcessAffinityMask
1582     GetProcessMemoryInfo
1583     GetProcessTimes
1584     getrusage
1585     GetSystemTimeAsFileTime
1586     gettimeofday
1587     gmtime_r
1588     inet_aton
1589     isatty
1590     jack_port_get_latency_range
1591     LoadLibrary
1592     localtime_r
1593     mach_absolute_time
1594     MapViewOfFile
1595     memalign
1596     mkstemp
1597     mmap
1598     mprotect
1599     nanosleep
1600     posix_memalign
1601     sched_getaffinity
1602     SetConsoleTextAttribute
1603     setmode
1604     setrlimit
1605     Sleep
1606     strerror_r
1607     sysconf
1608     sysctl
1609     usleep
1610     VirtualAlloc
1611 "
1612
1613 TOOLCHAIN_FEATURES="
1614     as_dn_directive
1615     as_fpu_directive
1616     as_func
1617     as_object_arch
1618     asm_mod_q
1619     attribute_may_alias
1620     attribute_packed
1621     ebp_available
1622     ebx_available
1623     gnu_as
1624     ibm_asm
1625     inline_asm_labels
1626     pragma_deprecated
1627     symver_asm_label
1628     symver_gnu_asm
1629     vfp_args
1630     xform_asm
1631     xmm_clobbers
1632 "
1633
1634 TYPES_LIST="
1635     CONDITION_VARIABLE_Ptr
1636     socklen_t
1637     struct_addrinfo
1638     struct_group_source_req
1639     struct_ip_mreq_source
1640     struct_ipv6_mreq
1641     struct_pollfd
1642     struct_rusage_ru_maxrss
1643     struct_sockaddr_in6
1644     struct_sockaddr_sa_len
1645     struct_sockaddr_storage
1646     struct_v4l2_frmivalenum_discrete
1647 "
1648
1649 HAVE_LIST="
1650     $ARCH_EXT_LIST
1651     $(add_suffix _external $ARCH_EXT_LIST)
1652     $(add_suffix _inline   $ARCH_EXT_LIST)
1653     $ARCH_FEATURES
1654     $ATOMICS_LIST
1655     $BUILTIN_LIST
1656     $HAVE_LIST_CMDLINE
1657     $HAVE_LIST_PUB
1658     $HEADERS_LIST
1659     $INTRINSICS_LIST
1660     $MATH_FUNCS
1661     $SYSTEM_FUNCS
1662     $THREADS_LIST
1663     $TOOLCHAIN_FEATURES
1664     $TYPES_LIST
1665     atomics_native
1666     dos_paths
1667     dxva2_lib
1668     libc_msvcrt
1669     libdc1394_1
1670     libdc1394_2
1671     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1672     sdl
1673     section_data_rel_ro
1674     threads
1675     vaapi_drm
1676     vaapi_x11
1677     vdpau_x11
1678     xlib
1679 "
1680
1681 # options emitted with CONFIG_ prefix but not available on the command line
1682 CONFIG_EXTRA="
1683     aandcttables
1684     ac3dsp
1685     audio_frame_queue
1686     audiodsp
1687     blockdsp
1688     bswapdsp
1689     cabac
1690     dirac_parse
1691     dvprofile
1692     faandct
1693     faanidct
1694     fdctdsp
1695     flacdsp
1696     fmtconvert
1697     g722dsp
1698     gcrypt
1699     gmp
1700     golomb
1701     gplv3
1702     h263dsp
1703     h264chroma
1704     h264dsp
1705     h264parse
1706     h264pred
1707     h264qpel
1708     hpeldsp
1709     huffman
1710     huffyuvdsp
1711     huffyuvencdsp
1712     idctdsp
1713     iirfilter
1714     imdct15
1715     intrax8
1716     iso_media
1717     ividsp
1718     jpegtables
1719     libx262
1720     lgplv3
1721     lpc
1722     lzf
1723     me_cmp
1724     mpeg_er
1725     mpegaudio
1726     mpegaudiodsp
1727     mpegvideo
1728     mpegvideoenc
1729     mss34dsp
1730     pixblockdsp
1731     qpeldsp
1732     qsv
1733     qsvdec
1734     qsvenc
1735     rangecoder
1736     riffdec
1737     riffenc
1738     rtpdec
1739     rtpenc_chain
1740     rv34dsp
1741     sinewin
1742     snappy
1743     srtp
1744     startcode
1745     texturedsp
1746     texturedspenc
1747     tpeldsp
1748     vaapi_encode
1749     vc1dsp
1750     videodsp
1751     vp3dsp
1752     vp56dsp
1753     vp8dsp
1754     wma_freqs
1755     wmv2dsp
1756 "
1757
1758 CMDLINE_SELECT="
1759     $ARCH_EXT_LIST
1760     $CONFIG_LIST
1761     $HAVE_LIST_CMDLINE
1762     $THREADS_LIST
1763     asm
1764     cross_compile
1765     debug
1766     extra_warnings
1767     logging
1768     lto
1769     optimizations
1770     rpath
1771 "
1772
1773 PATHS_LIST="
1774     bindir
1775     datadir
1776     docdir
1777     incdir
1778     libdir
1779     mandir
1780     prefix
1781     shlibdir
1782 "
1783
1784 CMDLINE_SET="
1785     $PATHS_LIST
1786     ar
1787     arch
1788     as
1789     build_suffix
1790     cc
1791     objcc
1792     cpu
1793     cross_prefix
1794     custom_allocator
1795     dep_cc
1796     env
1797     extra_version
1798     host_cc
1799     host_cflags
1800     host_ld
1801     host_ldflags
1802     host_libs
1803     host_os
1804     ld
1805     logfile
1806     malloc_prefix
1807     nm
1808     optflags
1809     pkg_config
1810     pkg_config_flags
1811     random_seed
1812     samples
1813     sysinclude
1814     sysroot
1815     target_exec
1816     target_os
1817     target_path
1818     target_samples
1819     toolchain
1820 "
1821
1822 CMDLINE_APPEND="
1823     extra_cflags
1824     extra_objcflags
1825     host_cppflags
1826 "
1827
1828 # code dependency declarations
1829
1830 # architecture extensions
1831
1832 armv5te_deps="arm"
1833 armv6_deps="arm"
1834 armv6t2_deps="arm"
1835 armv8_deps="aarch64"
1836 neon_deps_any="aarch64 arm"
1837 intrinsics_neon_deps="neon"
1838 vfp_deps_any="aarch64 arm"
1839 vfpv3_deps="vfp"
1840
1841 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1842
1843 altivec_deps="ppc"
1844 ppc4xx_deps="ppc"
1845 vsx_deps="altivec"
1846 power8_deps="vsx"
1847
1848 cpunop_deps="i686"
1849 x86_64_select="i686"
1850 x86_64_suggest="fast_cmov"
1851
1852 amd3dnow_deps="mmx"
1853 amd3dnowext_deps="amd3dnow"
1854 i686_deps="x86"
1855 mmx_deps="x86"
1856 mmxext_deps="mmx"
1857 sse_deps="mmxext"
1858 sse2_deps="sse"
1859 sse3_deps="sse2"
1860 ssse3_deps="sse3"
1861 sse4_deps="ssse3"
1862 sse42_deps="sse4"
1863 avx_deps="sse42"
1864 xop_deps="avx"
1865 fma3_deps="avx"
1866 fma4_deps="avx"
1867 avx2_deps="avx"
1868
1869 mmx_external_deps="yasm"
1870 mmx_inline_deps="inline_asm"
1871 mmx_suggest="mmx_external mmx_inline"
1872
1873 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1874     eval dep=\$${ext}_deps
1875     eval ${ext}_external_deps='"${dep}_external"'
1876     eval ${ext}_inline_deps='"${dep}_inline"'
1877     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1878 done
1879
1880 aligned_stack_if_any="aarch64 ppc x86"
1881 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1882 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1883 fast_unaligned_if_any="aarch64 ppc x86"
1884 simd_align_16_if_any="altivec neon sse"
1885 simd_align_32_if_any="avx"
1886
1887 # system capabilities
1888 symver_if_any="symver_asm_label symver_gnu_asm"
1889 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
1890
1891 # threading support
1892 atomics_gcc_if="sync_val_compare_and_swap"
1893 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1894 atomics_win32_if="MemoryBarrier"
1895 atomics_native_if_any="$ATOMICS_LIST"
1896 w32threads_deps="atomics_native"
1897 threads_if_any="$THREADS_LIST"
1898
1899 # subsystems
1900 dct_select="rdft"
1901 dirac_parse_select="golomb"
1902 error_resilience_select="me_cmp"
1903 faandct_deps="faan fdctdsp"
1904 faanidct_deps="faan idctdsp"
1905 h264dsp_select="startcode"
1906 intrax8_select="blockdsp idctdsp"
1907 mdct_select="fft"
1908 rdft_select="fft"
1909 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1910 mpeg_er_select="error_resilience"
1911 mpegaudio_select="mpegaudiodsp"
1912 mpegaudiodsp_select="dct"
1913 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1914 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1915 vc1dsp_select="h264chroma qpeldsp startcode"
1916
1917 # decoders / encoders
1918 aac_decoder_select="imdct15 mdct sinewin"
1919 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1920 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1921 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1922 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1923 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1924 adpcm_g722_decoder_select="g722dsp"
1925 adpcm_g722_encoder_select="g722dsp"
1926 aic_decoder_select="golomb idctdsp"
1927 alac_encoder_select="lpc"
1928 als_decoder_select="bswapdsp"
1929 amrnb_decoder_select="lsp"
1930 amrwb_decoder_select="lsp"
1931 amv_decoder_select="sp5x_decoder"
1932 ape_decoder_select="bswapdsp"
1933 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1934 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1935 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1936 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1937 atrac1_decoder_select="mdct sinewin"
1938 atrac3_decoder_select="mdct"
1939 atrac3p_decoder_select="mdct sinewin"
1940 bink_decoder_select="blockdsp hpeldsp"
1941 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1942 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1943 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1944 cllc_decoder_select="bswapdsp"
1945 comfortnoise_encoder_select="lpc"
1946 cook_decoder_select="audiodsp mdct sinewin"
1947 cscd_decoder_select="lzo"
1948 cscd_decoder_suggest="zlib"
1949 dca_decoder_select="fmtconvert mdct"
1950 dds_decoder_select="texturedsp"
1951 dnxhd_decoder_select="blockdsp idctdsp"
1952 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1953 dvvideo_decoder_select="dvprofile idctdsp"
1954 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1955 dxa_decoder_deps="zlib"
1956 dxv_decoder_select="lzf texturedsp"
1957 eac3_decoder_select="ac3_decoder"
1958 eac3_encoder_select="ac3_encoder"
1959 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1960 eatgq_decoder_select="aandcttables idctdsp"
1961 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
1962 exr_decoder_deps="zlib"
1963 ffv1_decoder_select="golomb rangecoder"
1964 ffv1_encoder_select="rangecoder"
1965 ffvhuff_decoder_select="huffyuv_decoder"
1966 ffvhuff_encoder_select="huffyuv_encoder"
1967 fic_decoder_select="golomb"
1968 flac_decoder_select="flacdsp golomb"
1969 flac_encoder_select="bswapdsp flacdsp golomb lpc"
1970 flashsv_decoder_deps="zlib"
1971 flashsv_encoder_deps="zlib"
1972 flashsv2_decoder_deps="zlib"
1973 flv_decoder_select="h263_decoder"
1974 flv_encoder_select="h263_encoder"
1975 fourxm_decoder_select="blockdsp bswapdsp"
1976 fraps_decoder_select="bswapdsp huffman"
1977 g2m_decoder_deps="zlib"
1978 g2m_decoder_select="blockdsp idctdsp jpegtables"
1979 h261_decoder_select="mpeg_er mpegvideo"
1980 h261_encoder_select="aandcttables mpegvideoenc"
1981 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1982 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1983 h263i_decoder_select="h263_decoder"
1984 h263p_encoder_select="h263_encoder"
1985 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
1986 h264_decoder_suggest="error_resilience"
1987 hap_decoder_select="snappy texturedsp"
1988 hap_encoder_deps="libsnappy"
1989 hap_encoder_select="texturedspenc"
1990 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1991 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1992 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1993 iac_decoder_select="imc_decoder"
1994 imc_decoder_select="bswapdsp fft mdct sinewin"
1995 indeo3_decoder_select="hpeldsp"
1996 indeo4_decoder_select="ividsp"
1997 indeo5_decoder_select="ividsp"
1998 interplay_video_decoder_select="hpeldsp"
1999 jpegls_decoder_select="golomb mjpeg_decoder"
2000 jpegls_encoder_select="golomb"
2001 jv_decoder_select="blockdsp"
2002 lagarith_decoder_select="huffyuvdsp"
2003 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2004 loco_decoder_select="golomb"
2005 magicyuv_decoder_select="huffyuvdsp"
2006 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2007 metasound_decoder_select="lsp mdct sinewin"
2008 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2009 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2010 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2011 mjpegb_decoder_select="mjpeg_decoder"
2012 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2013 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2014 mlp_decoder_select="mlp_parser"
2015 motionpixels_decoder_select="bswapdsp"
2016 mp1_decoder_select="mpegaudio"
2017 mp1float_decoder_select="mpegaudio"
2018 mp2_decoder_select="mpegaudio"
2019 mp2float_decoder_select="mpegaudio"
2020 mp3_decoder_select="mpegaudio"
2021 mp3adu_decoder_select="mpegaudio"
2022 mp3adufloat_decoder_select="mpegaudio"
2023 mp3float_decoder_select="mpegaudio"
2024 mp3on4_decoder_select="mpegaudio"
2025 mp3on4float_decoder_select="mpegaudio"
2026 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2027 mpc8_decoder_select="mpegaudiodsp"
2028 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2029 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2030 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2031 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2032 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2033 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2034 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2035 mpeg4_encoder_select="h263_encoder"
2036 msa1_decoder_select="mss34dsp"
2037 msmpeg4v1_decoder_select="h263_decoder"
2038 msmpeg4v2_decoder_select="h263_decoder"
2039 msmpeg4v2_encoder_select="h263_encoder"
2040 msmpeg4v3_decoder_select="h263_decoder"
2041 msmpeg4v3_encoder_select="h263_encoder"
2042 mss2_decoder_select="error_resilience mpeg_er mpegvideo vc1_decoder"
2043 mts2_decoder_select="mss34dsp"
2044 mxpeg_decoder_select="mjpeg_decoder"
2045 nellymoser_decoder_select="mdct sinewin"
2046 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2047 nuv_decoder_select="idctdsp lzo"
2048 on2avc_decoder_select="mdct"
2049 opus_decoder_deps="avresample"
2050 opus_decoder_select="imdct15"
2051 png_decoder_deps="zlib"
2052 png_encoder_deps="zlib"
2053 png_encoder_select="huffyuvencdsp"
2054 prores_decoder_select="idctdsp"
2055 prores_encoder_select="fdctdsp"
2056 qcelp_decoder_select="lsp"
2057 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2058 ra_144_encoder_select="audio_frame_queue lpc"
2059 ralf_decoder_select="golomb"
2060 rscc_decoder_deps="zlib"
2061 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2062 rv10_encoder_select="h263_encoder"
2063 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2064 rv20_encoder_select="h263_encoder"
2065 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2066 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2067 screenpresso_decoder_deps="zlib"
2068 shorten_decoder_select="golomb"
2069 sipr_decoder_select="lsp"
2070 sp5x_decoder_select="mjpeg_decoder"
2071 svq1_decoder_select="hpeldsp"
2072 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2073 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2074 svq3_decoder_suggest="zlib"
2075 tak_decoder_select="audiodsp"
2076 tdsc_decoder_deps="zlib"
2077 tdsc_decoder_select="mjpeg_decoder"
2078 theora_decoder_select="vp3_decoder"
2079 thp_decoder_select="mjpeg_decoder"
2080 tiff_decoder_suggest="zlib"
2081 tiff_encoder_suggest="zlib"
2082 truehd_decoder_select="mlp_decoder"
2083 truemotion2_decoder_select="bswapdsp"
2084 truespeech_decoder_select="bswapdsp"
2085 tscc_decoder_deps="zlib"
2086 txd_decoder_select="texturedsp"
2087 twinvq_decoder_select="mdct lsp sinewin"
2088 utvideo_decoder_select="bswapdsp"
2089 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2090 vble_decoder_select="huffyuvdsp"
2091 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2092 vc1image_decoder_select="vc1_decoder"
2093 vorbis_decoder_select="mdct"
2094 vorbis_encoder_select="mdct"
2095 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2096 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2097 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2098 vp6a_decoder_select="vp6_decoder"
2099 vp6f_decoder_select="vp6_decoder"
2100 vp7_decoder_select="h264pred videodsp vp8dsp"
2101 vp8_decoder_select="h264pred videodsp vp8dsp"
2102 vp9_decoder_select="videodsp"
2103 webp_decoder_select="vp8_decoder"
2104 wmapro_decoder_select="mdct sinewin wma_freqs"
2105 wmav1_decoder_select="mdct sinewin wma_freqs"
2106 wmav1_encoder_select="mdct sinewin wma_freqs"
2107 wmav2_decoder_select="mdct sinewin wma_freqs"
2108 wmav2_encoder_select="mdct sinewin wma_freqs"
2109 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2110 wmv1_decoder_select="h263_decoder"
2111 wmv1_encoder_select="h263_encoder"
2112 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2113 wmv2_encoder_select="h263_encoder wmv2dsp"
2114 wmv3_decoder_select="vc1_decoder"
2115 wmv3image_decoder_select="wmv3_decoder"
2116 zerocodec_decoder_deps="zlib"
2117 zlib_decoder_deps="zlib"
2118 zlib_encoder_deps="zlib"
2119 zmbv_decoder_deps="zlib"
2120 zmbv_encoder_deps="zlib"
2121
2122 # hardware accelerators
2123 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2124 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2125 vaapi_deps="va_va_h"
2126 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2127 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2128 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2129
2130 h263_vaapi_hwaccel_deps="vaapi"
2131 h263_vaapi_hwaccel_select="h263_decoder"
2132 h264_d3d11va_hwaccel_deps="d3d11va"
2133 h264_d3d11va_hwaccel_select="h264_decoder"
2134 h264_dxva2_hwaccel_deps="dxva2"
2135 h264_dxva2_hwaccel_select="h264_decoder"
2136 h264_mmal_decoder_deps="mmal"
2137 h264_mmal_decoder_select="mmal"
2138 h264_mmal_hwaccel_deps="mmal"
2139 h264_omx_encoder_deps="omx"
2140 h264_qsv_hwaccel_deps="libmfx"
2141 h264_vaapi_hwaccel_deps="vaapi"
2142 h264_vaapi_hwaccel_select="h264_decoder"
2143 h264_vda_hwaccel_deps="vda"
2144 h264_vda_hwaccel_select="h264_decoder"
2145 h264_vda_old_hwaccel_deps="vda"
2146 h264_vda_old_hwaccel_select="h264_decoder"
2147 h264_vdpau_hwaccel_deps="vdpau"
2148 h264_vdpau_hwaccel_select="h264_decoder"
2149 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2150 hevc_d3d11va_hwaccel_select="hevc_decoder"
2151 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2152 hevc_dxva2_hwaccel_select="hevc_decoder"
2153 hevc_qsv_hwaccel_deps="libmfx"
2154 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2155 hevc_vdpau_hwaccel_select="hevc_decoder"
2156 mpeg1_vdpau_hwaccel_deps="vdpau"
2157 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2158 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2159 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2160 mpeg2_dxva2_hwaccel_deps="dxva2"
2161 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2162 mpeg2_mmal_decoder_deps="mmal"
2163 mpeg2_mmal_decoder_select="mmal"
2164 mpeg2_mmal_hwaccel_deps="mmal"
2165 mpeg2_qsv_hwaccel_deps="libmfx"
2166 mpeg2_vaapi_hwaccel_deps="vaapi"
2167 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2168 mpeg2_vdpau_hwaccel_deps="vdpau"
2169 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2170 mpeg4_omx_encoder_deps="omx"
2171 mpeg4_vaapi_hwaccel_deps="vaapi"
2172 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2173 mpeg4_vdpau_hwaccel_deps="vdpau"
2174 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2175 vc1_d3d11va_hwaccel_deps="d3d11va"
2176 vc1_d3d11va_hwaccel_select="vc1_decoder"
2177 vc1_dxva2_hwaccel_deps="dxva2"
2178 vc1_dxva2_hwaccel_select="vc1_decoder"
2179 vc1_mmal_decoder_deps="mmal"
2180 vc1_mmal_decoder_select="mmal"
2181 vc1_mmal_hwaccel_deps="mmal"
2182 vc1_vaapi_hwaccel_deps="vaapi"
2183 vc1_vaapi_hwaccel_select="vc1_decoder"
2184 vc1_vdpau_hwaccel_deps="vdpau"
2185 vc1_vdpau_hwaccel_select="vc1_decoder"
2186 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2187 vp8_vaapi_hwaccel_select="vp8_decoder"
2188 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2189 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2190 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2191 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2192
2193 # hardware-accelerated codecs
2194 nvenc_deps_any="dlopen LoadLibrary"
2195 nvenc_extralibs='$ldl'
2196 omx_deps="dlopen pthreads"
2197 omx_extralibs='$ldl'
2198 qsvdec_select="qsv"
2199 qsvenc_select="qsv"
2200 vaapi_encode_deps="vaapi"
2201
2202 hwupload_cuda_filter_deps="cuda"
2203 scale_npp_filter_deps="cuda libnpp"
2204
2205 h264_nvenc_encoder_deps="nvenc"
2206 h264_qsv_decoder_deps="libmfx"
2207 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2208 h264_qsv_encoder_deps="libmfx"
2209 h264_qsv_encoder_select="qsvenc"
2210 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2211 h264_vaapi_encoder_select="vaapi_encode golomb"
2212
2213 hevc_nvenc_encoder_deps="nvenc"
2214 hevc_qsv_decoder_deps="libmfx"
2215 hevc_qsv_encoder_deps="libmfx"
2216 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2217 hevc_qsv_encoder_select="qsvenc"
2218 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2219 hevc_vaapi_encoder_select="vaapi_encode golomb"
2220 mpeg2_qsv_decoder_deps="libmfx"
2221 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2222 mpeg2_qsv_encoder_deps="libmfx"
2223 mpeg2_qsv_encoder_select="qsvenc"
2224
2225 nvenc_h264_encoder_deps="nvenc"
2226 nvenc_hevc_encoder_deps="nvenc"
2227
2228 # parsers
2229 h264_parser_select="golomb h264dsp h264parse"
2230 hevc_parser_select="golomb"
2231 mpegvideo_parser_select="mpegvideo"
2232 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2233 vc1_parser_select="vc1dsp"
2234
2235 # bitstream_filters
2236 mjpeg2jpeg_bsf_select="jpegtables"
2237
2238 # external libraries
2239 libdcadec_decoder_deps="libdcadec"
2240 libfaac_encoder_deps="libfaac"
2241 libfaac_encoder_select="audio_frame_queue"
2242 libfdk_aac_decoder_deps="libfdk_aac"
2243 libfdk_aac_encoder_deps="libfdk_aac"
2244 libfdk_aac_encoder_select="audio_frame_queue"
2245 libgsm_decoder_deps="libgsm"
2246 libgsm_encoder_deps="libgsm"
2247 libgsm_ms_decoder_deps="libgsm"
2248 libgsm_ms_encoder_deps="libgsm"
2249 libilbc_decoder_deps="libilbc"
2250 libilbc_encoder_deps="libilbc"
2251 libkvazaar_encoder_deps="libkvazaar"
2252 libmp3lame_encoder_deps="libmp3lame"
2253 libmp3lame_encoder_select="audio_frame_queue"
2254 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2255 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2256 libopencore_amrnb_encoder_select="audio_frame_queue"
2257 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2258 libopenh264_decoder_deps="libopenh264"
2259 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2260 libopenh264_encoder_deps="libopenh264"
2261 libopenjpeg_decoder_deps="libopenjpeg"
2262 libopenjpeg_encoder_deps="libopenjpeg"
2263 libopus_decoder_deps="libopus"
2264 libopus_encoder_deps="libopus"
2265 libopus_encoder_select="audio_frame_queue"
2266 libschroedinger_decoder_deps="libschroedinger"
2267 libschroedinger_encoder_deps="libschroedinger"
2268 libspeex_decoder_deps="libspeex"
2269 libspeex_encoder_deps="libspeex"
2270 libspeex_encoder_select="audio_frame_queue"
2271 libtheora_encoder_deps="libtheora"
2272 libtwolame_encoder_deps="libtwolame"
2273 libvo_aacenc_encoder_deps="libvo_aacenc"
2274 libvo_aacenc_encoder_select="audio_frame_queue"
2275 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2276 libvorbis_encoder_deps="libvorbis"
2277 libvorbis_encoder_select="audio_frame_queue"
2278 libvpx_vp8_decoder_deps="libvpx"
2279 libvpx_vp8_encoder_deps="libvpx"
2280 libvpx_vp9_decoder_deps="libvpx"
2281 libvpx_vp9_encoder_deps="libvpx"
2282 libwavpack_encoder_deps="libwavpack"
2283 libwebp_encoder_deps="libwebp"
2284 libx262_encoder_deps="libx262"
2285 libx264_encoder_deps="libx264"
2286 libx265_encoder_deps="libx265"
2287 libxavs_encoder_deps="libxavs"
2288 libxvid_encoder_deps="libxvid"
2289
2290 # demuxers / muxers
2291 ac3_demuxer_select="ac3_parser"
2292 asf_demuxer_select="riffdec"
2293 asf_muxer_select="riffenc"
2294 asf_stream_muxer_select="asf_muxer"
2295 avi_demuxer_select="iso_media riffdec"
2296 avi_muxer_select="riffenc"
2297 avisynth_demuxer_deps="avisynth"
2298 avisynth_demuxer_select="riffdec"
2299 caf_demuxer_select="iso_media riffdec"
2300 dash_muxer_select="mp4_muxer"
2301 dirac_demuxer_select="dirac_parser"
2302 dv_demuxer_select="dvprofile"
2303 dv_muxer_select="dvprofile"
2304 dxa_demuxer_select="riffdec"
2305 eac3_demuxer_select="ac3_parser"
2306 f4v_muxer_select="mov_muxer"
2307 flac_demuxer_select="flac_parser"
2308 hds_muxer_select="flv_muxer"
2309 hls_muxer_select="mpegts_muxer"
2310 ipod_muxer_select="mov_muxer"
2311 ismv_muxer_select="mov_muxer"
2312 matroska_audio_muxer_select="matroska_muxer"
2313 matroska_demuxer_select="iso_media riffdec"
2314 matroska_demuxer_suggest="bzlib lzo zlib"
2315 matroska_muxer_select="iso_media riffenc"
2316 mmf_muxer_select="riffenc"
2317 mov_demuxer_select="iso_media riffdec"
2318 mov_demuxer_suggest="zlib"
2319 mov_muxer_select="iso_media riffenc rtpenc_chain"
2320 mp3_demuxer_select="mpegaudio_parser"
2321 mp4_muxer_select="mov_muxer"
2322 mpegts_demuxer_select="iso_media"
2323 mpegts_muxer_select="adts_muxer latm_muxer"
2324 mpegtsraw_demuxer_select="mpegts_demuxer"
2325 mxf_d10_muxer_select="mxf_muxer"
2326 nut_muxer_select="riffenc"
2327 nuv_demuxer_select="riffdec"
2328 oga_muxer_select="ogg_muxer"
2329 ogg_demuxer_select="dirac_parse"
2330 opus_muxer_select="ogg_muxer"
2331 psp_muxer_select="mov_muxer"
2332 rtp_demuxer_select="sdp_demuxer"
2333 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2334 rtsp_demuxer_select="http_protocol rtpdec"
2335 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2336 sap_demuxer_select="sdp_demuxer"
2337 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2338 sdp_demuxer_select="rtpdec"
2339 smoothstreaming_muxer_select="ismv_muxer"
2340 spdif_muxer_select="aac_parser"
2341 spx_muxer_select="ogg_muxer"
2342 swf_demuxer_suggest="zlib"
2343 tak_demuxer_select="tak_parser"
2344 tg2_muxer_select="mov_muxer"
2345 tgp_muxer_select="mov_muxer"
2346 w64_demuxer_select="wav_demuxer"
2347 wav_demuxer_select="riffdec"
2348 wav_muxer_select="riffenc"
2349 webm_muxer_select="iso_media riffenc"
2350 webm_muxer_suggest="libopus_encoder libvorbis_encoder libvpx_vp8_encoder libvpx_vp9_encoder"
2351 wtv_demuxer_select="mpegts_demuxer riffdec"
2352 xmv_demuxer_select="riffdec"
2353 xwma_demuxer_select="riffdec"
2354
2355 # indevs / outdevs
2356 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2357 alsa_outdev_deps="alsa_asoundlib_h"
2358 avfoundation_indev_deps="AVFoundation_AVFoundation_h"
2359 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2360 dv1394_indev_deps="dv1394"
2361 dv1394_indev_select="dv_demuxer"
2362 fbdev_indev_deps="linux_fb_h"
2363 jack_indev_deps="jack_jack_h"
2364 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2365 libcdio_indev_deps="libcdio"
2366 libdc1394_indev_deps="libdc1394"
2367 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2368 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2369 pulse_indev_deps="libpulse"
2370 sndio_indev_deps="sndio_h"
2371 sndio_outdev_deps="sndio_h"
2372 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2373 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2374 vfwcap_indev_extralibs="-lavicap32"
2375 xcbgrab_indev_deps="libxcb"
2376
2377 # protocols
2378 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2379 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2380 ffrtmpcrypt_protocol_select="tcp_protocol"
2381 ffrtmphttp_protocol_deps="!librtmp_protocol"
2382 ffrtmphttp_protocol_select="http_protocol"
2383 gopher_protocol_select="network"
2384 http_protocol_select="tcp_protocol"
2385 httpproxy_protocol_select="tcp_protocol"
2386 https_protocol_select="tls_protocol"
2387 icecast_protocol_select="http_protocol"
2388 librtmp_protocol_deps="librtmp"
2389 librtmpe_protocol_deps="librtmp"
2390 librtmps_protocol_deps="librtmp"
2391 librtmpt_protocol_deps="librtmp"
2392 librtmpte_protocol_deps="librtmp"
2393 mmsh_protocol_select="http_protocol"
2394 mmst_protocol_select="network"
2395 rtmp_protocol_deps="!librtmp_protocol"
2396 rtmp_protocol_select="tcp_protocol"
2397 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2398 rtmps_protocol_deps="!librtmp_protocol"
2399 rtmps_protocol_select="tls_protocol"
2400 rtmpt_protocol_select="ffrtmphttp_protocol"
2401 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2402 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2403 rtp_protocol_select="udp_protocol"
2404 sctp_protocol_deps="struct_sctp_event_subscribe"
2405 sctp_protocol_select="network"
2406 srtp_protocol_select="rtp_protocol srtp"
2407 tcp_protocol_select="network"
2408 tls_gnutls_protocol_deps="gnutls"
2409 tls_gnutls_protocol_select="tcp_protocol"
2410 tls_openssl_protocol_deps="openssl !tls_gnutls_protocol"
2411 tls_openssl_protocol_select="tcp_protocol"
2412 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2413 udp_protocol_select="network"
2414 unix_protocol_deps="sys_un_h"
2415 unix_protocol_select="network"
2416
2417 # filters
2418 blackframe_filter_deps="gpl"
2419 boxblur_filter_deps="gpl"
2420 bs2b_filter_deps="libbs2b"
2421 cropdetect_filter_deps="gpl"
2422 deinterlace_qsv_filter_deps="libmfx"
2423 delogo_filter_deps="gpl"
2424 drawtext_filter_deps="libfreetype"
2425 frei0r_filter_deps="frei0r dlopen"
2426 frei0r_filter_extralibs='$ldl'
2427 frei0r_src_filter_deps="frei0r dlopen"
2428 frei0r_src_filter_extralibs='$ldl'
2429 hdcd_filter_deps="libhdcd"
2430 hqdn3d_filter_deps="gpl"
2431 interlace_filter_deps="gpl"
2432 ocv_filter_deps="libopencv"
2433 resample_filter_deps="avresample"
2434 scale_filter_deps="swscale"
2435 scale_qsv_filter_deps="libmfx"
2436 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2437
2438 # examples
2439 avcodec_example_deps="avcodec avutil"
2440 filter_audio_example_deps="avfilter avutil"
2441 metadata_example_deps="avformat avutil"
2442 output_example_deps="avcodec avformat avutil swscale"
2443 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2444 transcode_aac_example_deps="avcodec avformat avresample"
2445
2446 # libraries, in linking order
2447 avcodec_deps="avutil"
2448 avdevice_deps="avformat avcodec avutil"
2449 avfilter_deps="avutil"
2450 avformat_deps="avcodec avutil"
2451 avresample_deps="avutil"
2452 swscale_deps="avutil"
2453
2454 # programs
2455 avconv_deps="avcodec avfilter avformat avresample swscale"
2456 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2457                fps_filter null_filter resample_filter scale_filter
2458                trim_filter"
2459 avplay_deps="avcodec avfilter avformat avresample sdl"
2460 avplay_libs='$sdl_libs'
2461 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2462 avprobe_deps="avcodec avformat"
2463
2464 # documentation
2465 pod2man_deps="doc"
2466 texi2html_deps="doc"
2467
2468 # default parameters
2469
2470 logfile="config.log"
2471
2472 # installation paths
2473 prefix_default="/usr/local"
2474 bindir_default='${prefix}/bin'
2475 datadir_default='${prefix}/share/avconv'
2476 docdir_default='${prefix}/share/doc/libav'
2477 incdir_default='${prefix}/include'
2478 libdir_default='${prefix}/lib'
2479 mandir_default='${prefix}/share/man'
2480 shlibdir_default="$libdir_default"
2481
2482 # toolchain
2483 ar_default="ar"
2484 cc_default="gcc"
2485 host_cc_default="gcc"
2486 cp_f="cp -f"
2487 ln_s="ln -s -f"
2488 nm_default="nm -g"
2489 objformat="elf"
2490 pkg_config_default=pkg-config
2491 ranlib="ranlib"
2492 strip="strip"
2493 version_script='--version-script'
2494 yasmexe="yasm"
2495
2496 # machine
2497 arch_default=$(uname -m)
2498 cpu="generic"
2499 intrinsics="none"
2500
2501 # OS
2502 target_os_default=$(tolower $(uname -s))
2503 host_os=$target_os_default
2504
2505 # configurable options
2506 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2507
2508 enable asm
2509 enable debug
2510 enable doc
2511 enable faan faandct faanidct
2512 enable optimizations
2513 enable safe_bitstream_reader
2514 enable static
2515 enable swscale_alpha
2516 enable valgrind_backtrace
2517
2518 # By default, enable only those hwaccels that have no external dependencies.
2519 enable d3d11va dxva2 vda vdpau
2520
2521 # build settings
2522 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2523 LIBPREF="lib"
2524 LIBSUF=".a"
2525 FULLNAME='$(NAME)$(BUILDSUF)'
2526 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2527 SLIBPREF="lib"
2528 SLIBSUF=".so"
2529 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2530 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2531 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2532 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2533 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2534 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2535 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2536
2537 asflags_filter=echo
2538 cflags_filter=echo
2539 ldflags_filter=echo
2540
2541 AS_C='-c'
2542 AS_O='-o $@'
2543 CC_C='-c'
2544 CC_E='-E -o $@'
2545 CC_O='-o $@'
2546 OBJCC_C='-c'
2547 OBJCC_E='-E -o $@'
2548 OBJCC_O='-o $@'
2549 LD_O='-o $@'
2550 LD_LIB='-l%'
2551 LD_PATH='-L'
2552 HOSTCC_C='-c'
2553 HOSTCC_E='-E -o $@'
2554 HOSTCC_O='-o $@'
2555 HOSTLD_O='-o $@'
2556
2557 host_libs='-lm'
2558 host_cflags_filter=echo
2559 host_ldflags_filter=echo
2560
2561 target_path='$(CURDIR)'
2562
2563 # since the object filename is not given with the -MM flag, the compiler
2564 # is only able to print the basename, and we must add the path ourselves
2565 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2566 DEPFLAGS='-MM'
2567
2568 # find source path
2569 if test -f configure; then
2570     source_path=.
2571 else
2572     source_path=$(cd $(dirname "$0"); pwd)
2573     echo "$source_path" | grep -q '[[:blank:]]' &&
2574         die "Out of tree builds are impossible with whitespace in source path."
2575     test -e "$source_path/config.h" &&
2576         die "Out of tree builds are impossible with config.h in source dir."
2577 fi
2578
2579 for v in "$@"; do
2580     r=${v#*=}
2581     l=${v%"$r"}
2582     r=$(sh_quote "$r")
2583     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2584 done
2585
2586 find_things(){
2587     thing=$1
2588     pattern=$2
2589     file=$source_path/$3
2590     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2591 }
2592
2593 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2594 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2595 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2596 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2597 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2598 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2599 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2600 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2601 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2602
2603 find_things_extern(){
2604     thing=$1
2605     pattern=$2
2606     file=$source_path/$3
2607     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2608 }
2609
2610 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2611 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2612
2613 ALL_COMPONENTS="
2614     $BSF_LIST
2615     $DECODER_LIST
2616     $DEMUXER_LIST
2617     $ENCODER_LIST
2618     $FILTER_LIST
2619     $HWACCEL_LIST
2620     $INDEV_LIST
2621     $MUXER_LIST
2622     $OUTDEV_LIST
2623     $PARSER_LIST
2624     $PROTOCOL_LIST
2625 "
2626
2627 for n in $COMPONENT_LIST; do
2628     v=$(toupper ${n%s})_LIST
2629     eval enable \$$v
2630     eval ${n}_if_any="\$$v"
2631 done
2632
2633 enable $ARCH_EXT_LIST
2634
2635 die_unknown(){
2636     echo "Unknown option \"$1\"."
2637     echo "See $0 --help for available options."
2638     exit 1
2639 }
2640
2641 print_3_columns() {
2642     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2643 }
2644
2645 show_list() {
2646     suffix=_$1
2647     shift
2648     echo $* | sed s/$suffix//g | print_3_columns
2649     exit 0
2650 }
2651
2652 rand_list(){
2653     IFS=', '
2654     set -- $*
2655     unset IFS
2656     for thing; do
2657         comp=${thing%:*}
2658         prob=${thing#$comp}
2659         prob=${prob#:}
2660         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2661         echo "prob ${prob:-0.5}"
2662         printf '%s\n' $comp
2663     done
2664 }
2665
2666 do_random(){
2667     action=$1
2668     shift
2669     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2670     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2671 }
2672
2673 for opt do
2674     optval="${opt#*=}"
2675     case "$opt" in
2676         --extra-ldflags=*)
2677             add_ldflags $optval
2678         ;;
2679         --extra-ldexeflags=*)
2680             add_ldexeflags $optval
2681         ;;
2682         --extra-libs=*)
2683             add_extralibs $optval
2684         ;;
2685         --disable-devices)
2686             disable $INDEV_LIST $OUTDEV_LIST
2687         ;;
2688         --enable-debug=*)
2689             debuglevel="$optval"
2690         ;;
2691         --disable-programs)
2692             disable $PROGRAM_LIST
2693         ;;
2694         --disable-everything)
2695             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2696         ;;
2697         --disable-all)
2698             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2699             disable $LIBRARY_LIST $PROGRAM_LIST doc
2700         ;;
2701         --enable-random|--disable-random)
2702             action=${opt%%-random}
2703             do_random ${action#--} $COMPONENT_LIST
2704         ;;
2705         --enable-random=*|--disable-random=*)
2706             action=${opt%%-random=*}
2707             do_random ${action#--} $optval
2708         ;;
2709         --enable-*=*|--disable-*=*)
2710             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2711             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2712             eval list=\$$(toupper $thing)_LIST
2713             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2714             $action $(filter "$name" $list)
2715         ;;
2716         --enable-avserver|--disable-avserver*)
2717             warn "avserver has been removed, the ${opt} option is only"\
2718                  "provided for compatibility and will be removed in the future"
2719         ;;
2720         --enable-?*|--disable-?*)
2721             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2722             if is_in $option $COMPONENT_LIST; then
2723                 test $action = disable && action=unset
2724                 eval $action \$$(toupper ${option%s})_LIST
2725             elif is_in $option $CMDLINE_SELECT; then
2726                 $action $option
2727             else
2728                 die_unknown $opt
2729             fi
2730         ;;
2731         --list-*)
2732             NAME="${opt#--list-}"
2733             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2734             NAME=${NAME%s}
2735             eval show_list $NAME \$$(toupper $NAME)_LIST
2736         ;;
2737         --help|-h) show_help
2738         ;;
2739         *)
2740             optname="${opt%%=*}"
2741             optname="${optname#--}"
2742             optname=$(echo "$optname" | sed 's/-/_/g')
2743             if is_in $optname $CMDLINE_SET; then
2744                 eval $optname='$optval'
2745             elif is_in $optname $CMDLINE_APPEND; then
2746                 append $optname "$optval"
2747             else
2748                 die_unknown $opt
2749             fi
2750         ;;
2751     esac
2752 done
2753
2754 for e in $env; do
2755     eval "export $e"
2756 done
2757
2758 disabled logging && logfile=/dev/null
2759
2760 # Disable all the library-specific components if the library itself
2761 # is disabled, see AVCODEC_LIST and following _LIST variables.
2762
2763 disable_components(){
2764     disabled ${1} && disable $(
2765         eval components="\$$(toupper ${1})_COMPONENTS"
2766         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2767     )
2768 }
2769
2770 map 'disable_components $v' $LIBRARY_LIST
2771
2772 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2773 set >> $logfile
2774
2775 case "$toolchain" in
2776     *-asan)
2777         cc_default="${toolchain%-asan}"
2778         add_cflags  -fsanitize=address
2779         add_ldflags -fsanitize=address
2780     ;;
2781     *-msan)
2782         cc_default="${toolchain%-msan}"
2783         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2784         add_ldflags -fsanitize=memory
2785     ;;
2786     *-tsan)
2787         cc_default="${toolchain%-tsan}"
2788         add_cflags  -fsanitize=thread -pie
2789         add_ldflags -fsanitize=thread -pie
2790         case "$toolchain" in
2791             gcc-tsan)
2792                 add_cflags  -fPIC
2793                 add_ldflags -fPIC
2794                 ;;
2795         esac
2796     ;;
2797     *-usan)
2798         cc_default="${toolchain%-usan}"
2799         add_cflags  -fsanitize=undefined
2800         add_ldflags -fsanitize=undefined
2801         case "$toolchain" in
2802             clang-usan)
2803                 add_cflags -O1
2804                 ;;
2805         esac
2806     ;;
2807     valgrind-*)
2808         target_exec_default="valgrind"
2809         case "$toolchain" in
2810             valgrind-massif)
2811                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2812                 ;;
2813             valgrind-memcheck)
2814                 target_exec_args="--track-origins=yes --leak-check=full"
2815                 ;;
2816         esac
2817     ;;
2818     msvc)
2819         # Check whether the current MSVC version needs the C99 converter.
2820         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2821         # support enough of C99 to build libav. Default to the new
2822         # behaviour if the regexp was unable to match anything, since this
2823         # successfully parses the version number of existing supported
2824         # versions that require the converter (MSVC 2010 and 2012).
2825         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2826         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2827             cc_default="cl"
2828         else
2829             cc_default="c99wrap cl"
2830         fi
2831         ld_default="$source_path/compat/windows/mslink"
2832         nm_default="dumpbin -symbols"
2833         ar_default="lib"
2834         case "$arch" in
2835         arm*)
2836             as_default="armasm"
2837             ;;
2838         esac
2839         target_os_default="win32"
2840         # Use a relative path for TMPDIR. This makes sure all the
2841         # ffconf temp files are written with a relative path, avoiding
2842         # issues with msys/win32 path conversion for MSVC parameters
2843         # such as -Fo<file> or -out:<file>.
2844         TMPDIR=.
2845     ;;
2846     icl)
2847         cc_default="icl"
2848         ld_default="xilink"
2849         nm_default="dumpbin -symbols"
2850         ar_default="xilib"
2851         target_os_default="win32"
2852         TMPDIR=.
2853     ;;
2854     gcov)
2855         add_cflags  -fprofile-arcs -ftest-coverage
2856         add_ldflags -fprofile-arcs -ftest-coverage
2857     ;;
2858     llvm-cov)
2859         add_cflags -fprofile-arcs -ftest-coverage
2860         add_ldflags --coverage
2861     ;;
2862     hardened)
2863         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2864         add_cflags   -fno-strict-overflow -fstack-protector-all
2865         add_ldflags  -Wl,-z,relro -Wl,-z,now
2866     ;;
2867     ?*)
2868         die "Unknown toolchain $toolchain"
2869     ;;
2870 esac
2871
2872 test -n "$cross_prefix" && enable cross_compile
2873
2874 if enabled cross_compile; then
2875     test -n "$arch" && test -n "$target_os" ||
2876         die "Must specify target arch and OS when cross-compiling"
2877 fi
2878
2879 ar_default="${cross_prefix}${ar_default}"
2880 cc_default="${cross_prefix}${cc_default}"
2881 occ_default="${cross_prefix}${occ_default}"
2882 nm_default="${cross_prefix}${nm_default}"
2883 pkg_config_default="${cross_prefix}${pkg_config_default}"
2884 ranlib="${cross_prefix}${ranlib}"
2885 strip="${cross_prefix}${strip}"
2886
2887 sysinclude_default="${sysroot}/usr/include"
2888
2889 set_default arch cc pkg_config sysinclude target_exec target_os
2890 enabled cross_compile || host_cc_default=$cc
2891 set_default host_cc
2892
2893 if ! $pkg_config --version >/dev/null 2>&1; then
2894     warn "$pkg_config not found, library detection may fail."
2895     pkg_config=false
2896 fi
2897
2898 exesuf() {
2899     case $1 in
2900         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2901     esac
2902 }
2903
2904 EXESUF=$(exesuf $target_os)
2905 HOSTEXESUF=$(exesuf $host_os)
2906
2907 # set temporary file name
2908 : ${TMPDIR:=$TEMPDIR}
2909 : ${TMPDIR:=$TMP}
2910 : ${TMPDIR:=/tmp}
2911
2912 if ! check_cmd mktemp -u XXXXXX; then
2913     # simple replacement for missing mktemp
2914     # NOT SAFE FOR GENERAL USE
2915     mktemp(){
2916         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2917     }
2918 fi
2919
2920 tmpfile(){
2921     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2922         (set -C; exec > $tmp) 2>/dev/null ||
2923         die "Unable to create temporary file in $TMPDIR."
2924     append TMPFILES $tmp
2925     eval $1=$tmp
2926 }
2927
2928 trap 'rm -f -- $TMPFILES' EXIT
2929
2930 tmpfile TMPASM .asm
2931 tmpfile TMPC   .c
2932 tmpfile TMPE   $EXESUF
2933 tmpfile TMPH   .h
2934 tmpfile TMPO   .o
2935 tmpfile TMPS   .S
2936 tmpfile TMPSH  .sh
2937 tmpfile TMPV   .ver
2938
2939 unset -f mktemp
2940
2941 chmod +x $TMPE
2942
2943 # make sure we can execute files in $TMPDIR
2944 cat > $TMPSH 2>> $logfile <<EOF
2945 #! /bin/sh
2946 EOF
2947 chmod +x $TMPSH >> $logfile 2>&1
2948 if ! $TMPSH >> $logfile 2>&1; then
2949     cat <<EOF
2950 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2951 variable to another directory and make sure that it is not mounted noexec.
2952 EOF
2953     die "Sanity test failed."
2954 fi
2955
2956 armasm_flags(){
2957     for flag; do
2958         case $flag in
2959             # Filter out MSVC cl.exe options from cflags that shouldn't
2960             # be passed to gas-preprocessor
2961             -M[TD]*)                                            ;;
2962             *)                  echo $flag                      ;;
2963         esac
2964    done
2965 }
2966
2967 ccc_flags(){
2968     for flag; do
2969         case $flag in
2970             -std=c99)           echo -c99                       ;;
2971             -mcpu=*)            echo -arch ${flag#*=}           ;;
2972             -mieee)             echo -ieee                      ;;
2973             -O*|-fast)          echo $flag                      ;;
2974             -fno-math-errno)    echo -assume nomath_errno       ;;
2975             -g)                 echo -g3                        ;;
2976             -Wall)              echo -msg_enable level2         ;;
2977             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2978             -Wl,*)              echo $flag                      ;;
2979             -f*|-W*)                                            ;;
2980             *)                  echo $flag                      ;;
2981         esac
2982    done
2983 }
2984
2985 cparser_flags(){
2986     for flag; do
2987         case $flag in
2988             -Wno-switch)             echo -Wno-switch-enum ;;
2989             -Wno-format-zero-length) ;;
2990             -Wdisabled-optimization) ;;
2991             -Wno-pointer-sign)       echo -Wno-other ;;
2992             *)                       echo $flag ;;
2993         esac
2994     done
2995 }
2996
2997 msvc_common_flags(){
2998     for flag; do
2999         case $flag in
3000             # In addition to specifying certain flags under the compiler
3001             # specific filters, they must be specified here as well or else the
3002             # generic catch all at the bottom will print the original flag.
3003             -Wall)                ;;
3004             -std=c99)             ;;
3005             # Common flags
3006             -fomit-frame-pointer) ;;
3007             -g)                   echo -Z7 ;;
3008             -fno-math-errno)      ;;
3009             -fno-common)          ;;
3010             -fno-signed-zeros)    ;;
3011             -fPIC)                ;;
3012             -mthumb)              ;;
3013             -march=*)             ;;
3014             -lz)                  echo zlib.lib ;;
3015             -lavifil32)           echo vfw32.lib ;;
3016             -lavicap32)           echo vfw32.lib user32.lib ;;
3017             -lx264)               echo libx264.lib ;;
3018             -l*)                  echo ${flag#-l}.lib ;;
3019             -L*)                  echo -libpath:${flag#-L} ;;
3020             *)                    echo $flag ;;
3021         esac
3022     done
3023 }
3024
3025 msvc_flags(){
3026     msvc_common_flags "$@"
3027     for flag; do
3028         case $flag in
3029             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3030                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3031                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3032                                        -wd4273 -wd4554 -wd4701 ;;
3033         esac
3034     done
3035 }
3036
3037 icl_flags(){
3038     msvc_common_flags "$@"
3039     for flag; do
3040         case $flag in
3041             # Despite what Intel's documentation says -Wall, which is supported
3042             # on Windows, does enable remarks so disable them here.
3043             -Wall)                echo $flag -Qdiag-disable:remark ;;
3044             -std=c99)             echo -Qstd=c99 ;;
3045         esac
3046     done
3047 }
3048
3049 pgi_flags(){
3050     for flag; do
3051         case $flag in
3052             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3053             -fomit-frame-pointer) echo -Mnoframe ;;
3054             -g)                   echo -gopt ;;
3055             *)                    echo $flag ;;
3056         esac
3057     done
3058 }
3059
3060 suncc_flags(){
3061     for flag; do
3062         case $flag in
3063             -march=*|-mcpu=*)
3064                 case "${flag#*=}" in
3065                     native)                   echo -xtarget=native       ;;
3066                     v9|niagara)               echo -xarch=sparc          ;;
3067                     ultrasparc)               echo -xarch=sparcvis       ;;
3068                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3069                     i586|pentium)             echo -xchip=pentium        ;;
3070                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3071                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3072                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3073                     pentium4*)          echo -xtarget=pentium4           ;;
3074                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3075                     *-sse3)             echo -xarch=sse3                 ;;
3076                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3077                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3078                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3079                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3080                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3081                     k8|opteron|athlon64|athlon-fx)
3082                                                echo -xarch=sse2a         ;;
3083                     athlon*)                   echo -xarch=pentium_proa  ;;
3084                 esac
3085                 ;;
3086             -std=c99)             echo -xc99              ;;
3087             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3088             -fPIC)                echo -KPIC -xcode=pic32 ;;
3089             -W*,*)                echo $flag              ;;
3090             -f*-*|-W*|-mimpure-text)                      ;;
3091             -shared)              echo -G                 ;;
3092             *)                    echo $flag              ;;
3093         esac
3094     done
3095 }
3096
3097 tms470_flags(){
3098     for flag; do
3099         case $flag in
3100             -march=*|-mcpu=*)
3101                 case "${flag#*=}" in
3102                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3103                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3104                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3105                     armv6*|arm11*)          echo -mv=6   ;;
3106                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3107                                             echo -mv=5e  ;;
3108                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3109                 esac
3110                 ;;
3111             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3112             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3113             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3114             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3115             -msoft-float)   echo --float_support=vfplib       ;;
3116             -O[0-3]|-mf=*)  echo $flag                        ;;
3117             -g)             echo -g -mn                       ;;
3118             -pds=*)         echo $flag                        ;;
3119             -D*|-I*)        echo $flag                        ;;
3120             --gcc|--abi=*)  echo $flag                        ;;
3121             -me)            echo $flag                        ;;
3122         esac
3123     done
3124 }
3125
3126 probe_cc(){
3127     pfx=$1
3128     _cc=$2
3129
3130     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3131     unset _ld_o _ldflags _ld_lib _ld_path
3132     unset _depflags _DEPCMD _DEPFLAGS
3133     _flags_filter=echo
3134
3135     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3136         _type=llvm_gcc
3137         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3138         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3139         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3140         _cflags_speed='-O3'
3141         _cflags_size='-Os'
3142     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3143         _type=gcc
3144         gcc_version=$($_cc --version | head -n1)
3145         gcc_basever=$($_cc -dumpversion)
3146         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3147         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3148         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3149         if ! $_cc -dumpversion | grep -q '^2\.'; then
3150             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3151         fi
3152         _cflags_speed='-O3'
3153         _cflags_size='-Os'
3154     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3155         _type=icc
3156         _ident=$($_cc --version | head -n1)
3157         _depflags='-MMD'
3158         _cflags_speed='-O3'
3159         _cflags_size='-Os'
3160         _cflags_noopt='-O1'
3161     elif $_cc -v 2>&1 | grep -q xlc; then
3162         _type=xlc
3163         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3164         _cflags_speed='-O5'
3165         _cflags_size='-O5 -qcompact'
3166     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3167         _type=ccc
3168         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3169         _DEPFLAGS='-M'
3170         _cflags_speed='-fast'
3171         _cflags_size='-O1'
3172         _flags_filter=ccc_flags
3173     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3174         test -d "$sysroot" || die "No valid sysroot specified."
3175         _type=armcc
3176         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3177         armcc_conf="$PWD/armcc.conf"
3178         $_cc --arm_linux_configure                 \
3179              --arm_linux_config_file="$armcc_conf" \
3180              --configure_sysroot="$sysroot"        \
3181              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3182              die "Error creating armcc configuration file."
3183         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3184         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3185         as_default="${cross_prefix}gcc"
3186         _depflags='-MMD'
3187         _cflags_speed='-O3'
3188         _cflags_size='-Os'
3189     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3190         _type=tms470
3191         _ident=$($_cc -version | head -n1 | tr -s ' ')
3192         _flags='--gcc --abi=eabi -me'
3193         _cc_e='-ppl -fe=$@'
3194         _cc_o='-fe=$@'
3195         _depflags='-ppa -ppd=$(@:.o=.d)'
3196         _cflags_speed='-O3 -mf=5'
3197         _cflags_size='-O3 -mf=2'
3198         _flags_filter=tms470_flags
3199     elif $_cc -v 2>&1 | grep -q clang; then
3200         _type=clang
3201         _ident=$($_cc --version 2>/dev/null | head -n1)
3202         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3203         _cflags_speed='-O3'
3204         _cflags_size='-Os'
3205     elif $_cc -V 2>&1 | grep -q Sun; then
3206         _type=suncc
3207         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3208         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3209         _DEPFLAGS='-xM1 -xc99'
3210         _ldflags='-std=c99'
3211         _cflags_speed='-O5'
3212         _cflags_size='-O5 -xspace'
3213         _flags_filter=suncc_flags
3214     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3215         _type=pathscale
3216         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3217         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3218         _cflags_speed='-O2'
3219         _cflags_size='-Os'
3220         _flags_filter='filter_out -Wdisabled-optimization'
3221     elif $_cc -v 2>&1 | grep -q Open64; then
3222         _type=open64
3223         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3224         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3225         _cflags_speed='-O2'
3226         _cflags_size='-Os'
3227         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3228     elif $_cc -V 2>&1 | grep -q Portland; then
3229         _type=pgi
3230         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3231         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3232         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3233         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3234         _cflags_noopt="-O1"
3235         _flags_filter=pgi_flags
3236     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3237         _type=armasm
3238         _ident=$($_cc | head -n1)
3239         # 4509: "This form of conditional instruction is deprecated"
3240         _flags="-nologo -ignore 4509"
3241         _flags_filter=armasm_flags
3242     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3243         _type=msvc
3244         _ident=$($_cc 2>&1 | head -n1)
3245         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3246         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3247         _cflags_speed="-O2"
3248         _cflags_size="-O1"
3249         if $_cc -nologo- 2>&1 | grep -q Linker; then
3250             _ld_o='-out:$@'
3251         else
3252             _ld_o='-Fe$@'
3253         fi
3254         _cc_o='-Fo$@'
3255         _cc_e='-P -Fi$@'
3256         _flags_filter=msvc_flags
3257         _ld_lib='lib%.a'
3258         _ld_path='-libpath:'
3259         _flags='-nologo'
3260     elif $_cc 2>&1 | grep -q Intel; then
3261         _type=icl
3262         _ident=$($_cc 2>&1 | head -n1)
3263         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3264         # Not only is O3 broken on 13.x+ but it is slower on all previous
3265         # versions (tested) as well.
3266         _cflags_speed="-O2"
3267         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3268         if $_cc 2>&1 | grep -q Linker; then
3269             _ld_o='-out:$@'
3270         else
3271             _ld_o='-Fe$@'
3272         fi
3273         _cc_o='-Fo$@'
3274         _cc_e='-P'
3275         _flags_filter=icl_flags
3276         _ld_lib='lib%.a'
3277         _ld_path='-libpath:'
3278         # -Qdiag-error to make icl error when seeing certain unknown arguments
3279         _flags='-nologo -Qdiag-error:4044,10157'
3280         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3281         # with MSVC which enables it by default.
3282         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3283     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3284         # lld can emulate multiple different linkers; in ms link.exe mode,
3285         # the -? parameter gives the help output which contains an identifyable
3286         # string, while it gives an error in other modes.
3287         _type=lld-link
3288         # The link.exe mode doesn't have a switch for getting the version,
3289         # but we can force it back to gnu mode and get the version from there.
3290         _ident=$($_cc -flavor gnu --version)
3291         _ld_o='-out:$@'
3292         _flags_filter=msvc_flags
3293         _ld_lib='lib%.a'
3294         _ld_path='-libpath:'
3295     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3296         _type=cparser
3297         _ident=$($_cc --version | head -n1)
3298         _depflags='-MMD'
3299         _cflags_speed='-O4'
3300         _cflags_size='-O2'
3301         _flags_filter=cparser_flags
3302     fi
3303
3304     eval ${pfx}_type=\$_type
3305     eval ${pfx}_ident=\$_ident
3306 }
3307
3308 set_ccvars(){
3309     eval ${1}_C=\${_cc_c-\${${1}_C}}
3310     eval ${1}_E=\${_cc_e-\${${1}_E}}
3311     eval ${1}_O=\${_cc_o-\${${1}_O}}
3312
3313     if [ -n "$_depflags" ]; then
3314         eval ${1}_DEPFLAGS=\$_depflags
3315     else
3316         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3317         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3318         eval DEP${1}FLAGS=\$_flags
3319     fi
3320 }
3321
3322 probe_cc cc "$cc"
3323 cflags_filter=$_flags_filter
3324 cflags_speed=$_cflags_speed
3325 cflags_size=$_cflags_size
3326 cflags_noopt=$_cflags_noopt
3327 add_cflags $_flags $_cflags
3328 cc_ldflags=$_ldflags
3329 set_ccvars CC
3330
3331 probe_cc hostcc "$host_cc"
3332 host_cflags_filter=$_flags_filter
3333 add_host_cflags  $_flags $_cflags
3334 set_ccvars HOSTCC
3335
3336 test -n "$cc_type" && enable $cc_type ||
3337     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3338
3339 : ${as_default:=$cc}
3340 : ${objcc_default:=$cc}
3341 : ${dep_cc_default:=$cc}
3342 : ${ld_default:=$cc}
3343 : ${host_ld_default:=$host_cc}
3344 set_default ar as objcc dep_cc ld host_ld
3345
3346 probe_cc as "$as"
3347 asflags_filter=$_flags_filter
3348 add_asflags $_flags $_cflags
3349 set_ccvars AS
3350
3351 probe_cc objcc "$objcc"
3352 objcflags_filter=$_flags_filter
3353 add_objcflags $_flags $_cflags
3354 set_ccvars OBJC
3355
3356 probe_cc ld "$ld"
3357 ldflags_filter=$_flags_filter
3358 add_ldflags $_flags $_ldflags
3359 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3360 LD_O=${_ld_o-$LD_O}
3361 LD_LIB=${_ld_lib-$LD_LIB}
3362 LD_PATH=${_ld_path-$LD_PATH}
3363
3364 probe_cc hostld "$host_ld"
3365 host_ldflags_filter=$_flags_filter
3366 add_host_ldflags $_flags $_ldflags
3367 HOSTLD_O=${_ld_o-$HOSTLD_O}
3368
3369 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3370     probe_cc depcc "$dep_cc"
3371     CCDEP=${_DEPCMD:-$DEPCMD}
3372     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3373     DEPCCFLAGS=$_flags
3374 fi
3375
3376 if $ar 2>&1 | grep -q Microsoft; then
3377     arflags="-nologo"
3378     ar_o='-out:$@'
3379 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3380     arflags="rq"
3381     ar_o='$@'
3382 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3383     arflags='-Xany -r -c'
3384     ar_o='$@'
3385 else
3386     arflags="rc"
3387     ar_o='$@'
3388 fi
3389
3390 add_cflags $extra_cflags
3391 add_objcflags $extra_objcflags
3392 add_asflags $extra_cflags
3393
3394 if test -n "$sysroot"; then
3395     case "$cc_type" in
3396         gcc|llvm_gcc|clang)
3397             add_cppflags --sysroot="$sysroot"
3398             add_ldflags --sysroot="$sysroot"
3399         ;;
3400         tms470)
3401             add_cppflags -I"$sysinclude"
3402             add_ldflags  --sysroot="$sysroot"
3403         ;;
3404     esac
3405 fi
3406
3407 if test "$cpu" = host; then
3408     enabled cross_compile &&
3409         die "--cpu=host makes no sense when cross-compiling."
3410
3411     case "$cc_type" in
3412         gcc|llvm_gcc)
3413             check_native(){
3414                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3415                 sed -n "/cc1.*$1=/{
3416                             s/.*$1=\\([^ ]*\\).*/\\1/
3417                             p
3418                             q
3419                         }" $TMPE
3420             }
3421             cpu=$(check_native -march || check_native -mcpu)
3422         ;;
3423     esac
3424
3425     test "${cpu:-host}" = host &&
3426         die "--cpu=host not supported with compiler $cc"
3427 fi
3428
3429 # Deal with common $arch aliases
3430 case "$arch" in
3431     aarch64|arm64)
3432         arch="aarch64"
3433     ;;
3434     arm*)
3435         arch="arm"
3436     ;;
3437     mips*|IP*)
3438         case "$arch" in
3439         *el)
3440             add_cppflags -EL
3441             add_ldflags -EL
3442         ;;
3443         *eb)
3444             add_cppflags -EB
3445             add_ldflags -EB
3446         ;;
3447         esac
3448         arch="mips"
3449     ;;
3450     parisc*|hppa*)
3451         arch="parisc"
3452     ;;
3453     "Power Macintosh"|ppc*|powerpc*)
3454         arch="ppc"
3455     ;;
3456     s390|s390x)
3457         arch="s390"
3458     ;;
3459     sh4|sh)
3460         arch="sh4"
3461     ;;
3462     sun4u|sparc*)
3463         arch="sparc"
3464     ;;
3465     tilegx|tile-gx)
3466         arch="tilegx"
3467     ;;
3468     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3469         arch="x86"
3470     ;;
3471 esac
3472
3473 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3474 enable $arch
3475
3476 # Add processor-specific flags
3477 if enabled aarch64; then
3478
3479     case $cpu in
3480         armv*)
3481             cpuflags="-march=$cpu"
3482         ;;
3483         *)
3484             cpuflags="-mcpu=$cpu"
3485         ;;
3486     esac
3487
3488 elif enabled alpha; then
3489
3490     cpuflags="-mcpu=$cpu"
3491
3492 elif enabled arm; then
3493
3494     check_arm_arch() {
3495         check_cpp_condition stddef.h \
3496             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3497             $cpuflags
3498     }
3499
3500     probe_arm_arch() {
3501         if   check_arm_arch 4;        then echo armv4
3502         elif check_arm_arch 4T;       then echo armv4t
3503         elif check_arm_arch 5;        then echo armv5
3504         elif check_arm_arch 5E;       then echo armv5e
3505         elif check_arm_arch 5T;       then echo armv5t
3506         elif check_arm_arch 5TE;      then echo armv5te
3507         elif check_arm_arch 5TEJ;     then echo armv5te
3508         elif check_arm_arch 6;        then echo armv6
3509         elif check_arm_arch 6J;       then echo armv6j
3510         elif check_arm_arch 6K;       then echo armv6k
3511         elif check_arm_arch 6Z;       then echo armv6z
3512         elif check_arm_arch 6ZK;      then echo armv6zk
3513         elif check_arm_arch 6T2;      then echo armv6t2
3514         elif check_arm_arch 7;        then echo armv7
3515         elif check_arm_arch 7A  7_A;  then echo armv7-a
3516         elif check_arm_arch 7S;       then echo armv7-a
3517         elif check_arm_arch 7R  7_R;  then echo armv7-r
3518         elif check_arm_arch 7M  7_M;  then echo armv7-m
3519         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3520         elif check_arm_arch 8A  8_A;  then echo armv8-a
3521         fi
3522     }
3523
3524     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3525
3526     case $cpu in
3527         armv*)
3528             cpuflags="-march=$cpu"
3529             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3530         ;;
3531         *)
3532             cpuflags="-mcpu=$cpu"
3533             case $cpu in
3534                 cortex-a*)                               subarch=armv7a  ;;
3535                 cortex-r*)                               subarch=armv7r  ;;
3536                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3537                 arm11*)                                  subarch=armv6   ;;
3538                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3539                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3540                 *)                             subarch=$(probe_arm_arch) ;;
3541             esac
3542         ;;
3543     esac
3544
3545     case "$subarch" in
3546         armv5t*)    enable fast_clz                ;;
3547         armv[6-8]*) enable fast_clz fast_unaligned ;;
3548     esac
3549
3550 elif enabled avr32; then
3551
3552     case $cpu in
3553         ap7[02]0[0-2])
3554             subarch="avr32_ap"
3555             cpuflags="-mpart=$cpu"
3556         ;;
3557         ap)
3558             subarch="avr32_ap"
3559             cpuflags="-march=$cpu"
3560         ;;
3561         uc3[ab]*)
3562             subarch="avr32_uc"
3563             cpuflags="-mcpu=$cpu"
3564         ;;
3565         uc)
3566             subarch="avr32_uc"
3567             cpuflags="-march=$cpu"
3568         ;;
3569     esac
3570
3571 elif enabled bfin; then
3572
3573     cpuflags="-mcpu=$cpu"
3574
3575 elif enabled mips; then
3576
3577     cpuflags="-march=$cpu"
3578
3579 elif enabled ppc; then
3580
3581     disable ldbrx
3582
3583     case $(tolower $cpu) in
3584         601|ppc601|powerpc601)
3585             cpuflags="-mcpu=601"
3586             disable altivec
3587         ;;
3588         603*|ppc603*|powerpc603*)
3589             cpuflags="-mcpu=603"
3590             disable altivec
3591         ;;
3592         604*|ppc604*|powerpc604*)
3593             cpuflags="-mcpu=604"
3594             disable altivec
3595         ;;
3596         g3|75*|ppc75*|powerpc75*)
3597             cpuflags="-mcpu=750"
3598             disable altivec
3599         ;;
3600         g4|745*|ppc745*|powerpc745*)
3601             cpuflags="-mcpu=7450"
3602             disable vsx
3603         ;;
3604         74*|ppc74*|powerpc74*)
3605             cpuflags="-mcpu=7400"
3606             disable vsx
3607         ;;
3608         g5|970|ppc970|powerpc970)
3609             cpuflags="-mcpu=970"
3610             disable vsx
3611         ;;
3612         power[3-6]*)
3613             cpuflags="-mcpu=$cpu"
3614             disable vsx
3615         ;;
3616         power[7-8]*)
3617             cpuflags="-mcpu=$cpu"
3618             enable ldbrx
3619         ;;
3620         cell)
3621             cpuflags="-mcpu=cell"
3622             enable ldbrx
3623             disable vsx
3624         ;;
3625         e500mc)
3626             cpuflags="-mcpu=e500mc"
3627             disable altivec
3628         ;;
3629         e500v2)
3630             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3631             disable altivec
3632             disable dcbzl
3633         ;;
3634         e500)
3635             cpuflags="-mcpu=8540 -mhard-float"
3636             disable altivec
3637             disable dcbzl
3638         ;;
3639     esac
3640
3641 elif enabled sparc; then
3642
3643     case $cpu in
3644         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3645             cpuflags="-mcpu=$cpu"
3646         ;;
3647         ultrasparc*|niagara[234])
3648             cpuflags="-mcpu=$cpu"
3649         ;;
3650     esac
3651
3652 elif enabled x86; then
3653
3654     case $cpu in
3655         i[345]86|pentium)
3656             cpuflags="-march=$cpu"
3657             disable i686
3658             disable mmx
3659         ;;
3660         # targets that do NOT support nopl and conditional mov (cmov)
3661         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3662             cpuflags="-march=$cpu"
3663             disable i686
3664         ;;
3665         # targets that do support nopl and conditional mov (cmov)
3666         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3667             cpuflags="-march=$cpu"
3668             enable i686
3669             enable fast_cmov
3670         ;;
3671         # targets that do support conditional mov but on which it's slow
3672         pentium4|pentium4m|prescott|nocona)
3673             cpuflags="-march=$cpu"
3674             enable i686
3675             disable fast_cmov
3676         ;;
3677     esac
3678
3679 fi
3680
3681 if [ "$cpu" != generic ]; then
3682     add_cflags  $cpuflags
3683     add_asflags $cpuflags
3684     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3685 fi
3686
3687 # compiler sanity check
3688 check_exec <<EOF
3689 int main(void){ return 0; }
3690 EOF
3691 if test "$?" != 0; then
3692     echo "$cc is unable to create an executable file."
3693     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3694         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3695         echo "Only do this if you know what cross compiling means."
3696     fi
3697     die "C compiler test failed."
3698 fi
3699
3700 add_cppflags -D_ISOC99_SOURCE
3701
3702 # some compilers silently accept -std=c11, so we also need to check that the
3703 # version macro is defined properly
3704 if test_cflags_cpp -std=c11 "__STDC_VERSION__ >= 201112L"; then
3705     add_cflags -std=c11
3706 else
3707     check_cflags -std=c99
3708 fi
3709
3710 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3711 #include <stdlib.h>
3712 EOF
3713 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3714 #include <stdlib.h>
3715 EOF
3716
3717 add_host_cppflags -D_ISOC99_SOURCE
3718 check_host_cflags -std=c99
3719 check_host_cflags -Wall
3720 check_host_cflags -O3
3721
3722 check_64bit(){
3723     arch32=$1
3724     arch64=$2
3725     expr=$3
3726     check_code cc "" "int test[2*($expr) - 1]" &&
3727         subarch=$arch64 || subarch=$arch32
3728 }
3729
3730 case "$arch" in
3731     aarch64|alpha|ia64)
3732         spic=$shared
3733     ;;
3734     mips)
3735         check_64bit mips mips64 '_MIPS_SIM > 1'
3736         spic=$shared
3737     ;;
3738     parisc)
3739         check_64bit parisc parisc64 'sizeof(void *) > 4'
3740         spic=$shared
3741     ;;
3742     ppc)
3743         check_64bit ppc ppc64 'sizeof(void *) > 4'
3744         spic=$shared
3745     ;;
3746     s390)
3747         check_64bit s390 s390x 'sizeof(void *) > 4'
3748         spic=$shared
3749     ;;
3750     sparc)
3751         check_64bit sparc sparc64 'sizeof(void *) > 4'
3752         spic=$shared
3753     ;;
3754     x86)
3755         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3756         if test "$subarch" = "x86_64"; then
3757             spic=$shared
3758         fi
3759     ;;
3760 esac
3761
3762 enable $subarch
3763 enabled spic && enable_weak pic
3764
3765 # OS specific
3766 case $target_os in
3767     aix)
3768         SHFLAGS=-shared
3769         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3770         enabled shared && add_ldflags -Wl,-brtl
3771         ;;
3772     android)
3773         disable symver
3774         enable section_data_rel_ro
3775         SLIB_INSTALL_NAME='$(SLIBNAME)'
3776         SLIB_INSTALL_LINKS=
3777         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3778         ;;
3779     haiku)
3780         prefix_default="/boot/common"
3781         network_extralibs="-lnetwork"
3782         host_libs=
3783         ;;
3784     sunos)
3785         SHFLAGS='-shared -Wl,-h,$$(@F)'
3786         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3787         network_extralibs="-lsocket -lnsl"
3788         # When using suncc to build, the Solaris linker will mark
3789         # an executable with each instruction set encountered by
3790         # the Solaris assembler.  As our libraries contain their own
3791         # guards for processor-specific code, instead suppress
3792         # generation of the HWCAPS ELF section on Solaris x86 only.
3793         enabled_all suncc x86 &&
3794             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3795             add_ldflags -Wl,-M,mapfile
3796         nm_default='nm -P -g'
3797         version_script='-M'
3798         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3799         ;;
3800     netbsd)
3801         disable symver
3802         oss_indev_extralibs="-lossaudio"
3803         oss_outdev_extralibs="-lossaudio"
3804         ;;
3805     openbsd|bitrig)
3806         disable symver
3807         SHFLAGS='-shared'
3808         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3809         SLIB_INSTALL_LINKS=
3810         oss_indev_extralibs="-lossaudio"
3811         oss_outdev_extralibs="-lossaudio"
3812         ;;
3813     dragonfly)
3814         disable symver
3815         ;;
3816     freebsd)
3817         ;;
3818     bsd/os)
3819         add_extralibs -lpoll -lgnugetopt
3820         ;;
3821     darwin)
3822         enabled ppc && add_asflags -force_cpusubtype_ALL
3823         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3824         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3825         add_ldflags -Wl,-dynamic,-search_paths_first
3826         SLIBSUF=".dylib"
3827         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3828         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3829         objformat="macho"
3830         enabled x86_64 && objformat="macho64"
3831         enabled_any pic shared ||
3832             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3833         check_header dispatch/dispatch.h &&
3834             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3835         ;;
3836     msys*)
3837         die "Native MSYS builds are discouraged, please use the MINGW environment."
3838         ;;
3839     mingw32*|mingw64*)
3840         if test $target_os = "mingw32ce"; then
3841             disable network
3842         else
3843             target_os=mingw32
3844         fi
3845         LIBTARGET=i386
3846         if enabled x86_64; then
3847             LIBTARGET="i386:x86-64"
3848         elif enabled arm; then
3849             LIBTARGET=arm-wince
3850         fi
3851         check_ldflags -Wl,--nxcompat
3852         check_ldflags -Wl,--dynamicbase
3853         shlibdir_default="$bindir_default"
3854         SLIBPREF=""
3855         SLIBSUF=".dll"
3856         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3857         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3858         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3859         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3860         SLIB_INSTALL_LINKS=
3861         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3862         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3863         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3864         objformat="win32"
3865         dlltool="${cross_prefix}dlltool"
3866         ranlib=:
3867         enable dos_paths
3868         ;;
3869     win32|win64)
3870         disable symver
3871         if enabled shared; then
3872             # Link to the import library instead of the normal static library
3873             # for shared libs.
3874             LD_LIB='%.lib'
3875             # Cannot build both shared and static libs with MSVC or icl.
3876             disable static
3877         fi
3878         shlibdir_default="$bindir_default"
3879         SLIBPREF=""
3880         SLIBSUF=".dll"
3881         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3882         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3883         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3884         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3885         SLIB_INSTALL_LINKS=
3886         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3887         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3888         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3889         objformat="win32"
3890         ranlib=:
3891         enable dos_paths
3892         ;;
3893     cygwin*)
3894         target_os=cygwin
3895         shlibdir_default="$bindir_default"
3896         SLIBPREF="cyg"
3897         SLIBSUF=".dll"
3898         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3899         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3900         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3901         SLIB_INSTALL_LINKS=
3902         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3903         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3904         objformat="win32"
3905         enable dos_paths
3906         ;;
3907     *-dos|freedos|opendos)
3908         network_extralibs="-lsocket"
3909         objformat="coff"
3910         enable dos_paths
3911         add_cppflags -U__STRICT_ANSI__
3912         ;;
3913     linux)
3914         enable dv1394
3915         enable section_data_rel_ro
3916         ;;
3917     irix*)
3918         target_os=irix
3919         ranlib="echo ignoring ranlib"
3920         ;;
3921     os/2*)
3922         ln_s="cp -f"
3923         objformat="aout"
3924         add_cppflags -D_GNU_SOURCE
3925         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3926         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3927         LIBSUF="_s.a"
3928         SLIBPREF=""
3929         SLIBSUF=".dll"
3930         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3931         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3932         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3933             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3934             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3935             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3936             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
3937         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3938             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3939         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3940         enable dos_paths
3941         ;;
3942     gnu/kfreebsd)
3943         add_cppflags -D_BSD_SOURCE
3944         ;;
3945     gnu)
3946         ;;
3947     qnx)
3948         add_cppflags -D_QNX_SOURCE
3949         network_extralibs="-lsocket"
3950         ;;
3951     symbian)
3952         SLIBSUF=".dll"
3953         enable dos_paths
3954         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3955         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3956         add_ldflags -Wl,--target1-abs,--no-undefined \
3957                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3958                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3959         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3960                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3961                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3962         ;;
3963     osf1)
3964         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3965         ;;
3966     minix)
3967         ;;
3968     plan9)
3969         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3970                      -D_REENTRANT_SOURCE        \
3971                      -D_RESEARCH_SOURCE         \
3972                      -DFD_SETSIZE=96            \
3973                      -DHAVE_SOCK_OPTS
3974         add_compat strtod.o strtod=avpriv_strtod
3975         network_extralibs='-lbsd'
3976         exeobjs=compat/plan9/main.o
3977         cp_f='cp'
3978         ;;
3979     none)
3980         ;;
3981     *)
3982         die "Unknown OS '$target_os'."
3983         ;;
3984 esac
3985
3986 # determine libc flavour
3987
3988 probe_libc(){
3989     pfx=$1
3990     pfx_no_=${pfx%_}
3991     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3992     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3993         eval ${pfx}libc_type=uclibc
3994         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3995     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3996         eval ${pfx}libc_type=glibc
3997         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3998     # MinGW headers can be installed on Cygwin, so check for newlib first.
3999     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4000         eval ${pfx}libc_type=newlib
4001         add_${pfx}cppflags -U__STRICT_ANSI__
4002     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4003     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4004         eval ${pfx}libc_type=mingw64
4005         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4006         eval test \$${pfx_no_}cc_type = "gcc" &&
4007             add_${pfx}cppflags -D__printf__=__gnu_printf__
4008     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4009          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4010         eval ${pfx}libc_type=mingw32
4011         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4012             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4013             die "ERROR: MinGW32 runtime version must be >= 3.15."
4014         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4015         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700__" &&
4016             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
4017         eval test \$${pfx_no_}cc_type = "gcc" &&
4018             add_${pfx}cppflags -D__printf__=__gnu_printf__
4019     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4020         eval ${pfx}libc_type=msvcrt
4021         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4022             if [ "$pfx" = host_ ]; then
4023                 add_host_cppflags -Dsnprintf=_snprintf
4024             else
4025                 add_compat strtod.o strtod=avpriv_strtod
4026                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4027                                              _snprintf=avpriv_snprintf  \
4028                                              vsnprintf=avpriv_vsnprintf
4029             fi
4030         fi
4031         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
4032         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4033         # 0x601 by default unless something else is set by the user.
4034         # This can easily lead to us detecting functions only present
4035         # in such new versions and producing binaries requiring windows 7.0.
4036         # Therefore explicitly set the default to XP unless the user has
4037         # set something else on the command line.
4038         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4039         # family. For these cases, configure is free to use any functions
4040         # found in the SDK headers by default. (Alternatively, we could force
4041         # _WIN32_WINNT to 0x0602 in that case.)
4042         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4043             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4044 #ifdef WINAPI_FAMILY
4045 #include <winapifamily.h>
4046 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4047 #error not desktop
4048 #endif
4049 #endif
4050 EOF
4051         if [ "$pfx" = "" ]; then
4052             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4053         fi
4054     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4055         eval ${pfx}libc_type=klibc
4056     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4057         eval ${pfx}libc_type=bionic
4058     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4059         eval ${pfx}libc_type=solaris
4060         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4061     else
4062         eval ${pfx}libc_type=default
4063         add_${pfx}cppflags -D_DEFAULT_SOURCE
4064     fi
4065 }
4066
4067 probe_libc
4068 test -n "$libc_type" && enable libc_$libc_type
4069 probe_libc host_
4070 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4071
4072 case $libc_type in
4073     bionic)
4074         add_compat strtod.o strtod=avpriv_strtod
4075         ;;
4076 esac
4077
4078 # hacks for compiler/libc/os combinations
4079
4080 if enabled_all tms470 libc_glibc; then
4081     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4082     add_cppflags -D__USER_LABEL_PREFIX__=
4083     add_cppflags -D__builtin_memset=memset
4084     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4085     add_cflags   -pds=48    # incompatible redefinition of macro
4086 fi
4087
4088 if enabled_all ccc libc_glibc; then
4089     add_ldflags -Wl,-z,now  # calls to libots crash without this
4090 fi
4091
4092 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4093     add_cppflags '-I\$(SRC_PATH)/compat/float'
4094
4095 esc(){
4096     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4097 }
4098
4099 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
4100
4101 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4102
4103 set_default $PATHS_LIST
4104 set_default nm
4105
4106 # we need to build at least one lib type
4107 if ! enabled_any static shared; then
4108     cat <<EOF
4109 At least one library type must be built.
4110 Specify --enable-static to build the static libraries or --enable-shared to
4111 build the shared libraries as well. To only build the shared libraries specify
4112 --disable-static in addition to --enable-shared.
4113 EOF
4114     exit 1
4115 fi
4116
4117 die_license_disabled() {
4118     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
4119 }
4120
4121 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
4122 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
4123 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
4124
4125 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4126
4127 disabled optimizations || check_cflags -fomit-frame-pointer
4128
4129 enable_weak_pic() {
4130     disabled pic && return
4131     enable pic
4132     add_cppflags -DPIC
4133     case "$target_os" in
4134     mingw*|cygwin*)
4135         ;;
4136     *)
4137         add_cflags -fPIC
4138         ;;
4139     esac
4140     add_asflags  -fPIC
4141 }
4142
4143 enabled pic && enable_weak_pic
4144
4145 check_cc <<EOF || die "Symbol mangling check failed."
4146 int ff_extern;
4147 EOF
4148 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4149 extern_prefix=${sym%%ff_extern*}
4150
4151 check_cc <<EOF && enable_weak inline_asm
4152 void foo(void) { __asm__ volatile ("" ::); }
4153 EOF
4154
4155 _restrict=
4156 for restrict_keyword in restrict __restrict__ __restrict; do
4157     check_cc <<EOF && _restrict=$restrict_keyword && break
4158 void foo(char * $restrict_keyword p);
4159 EOF
4160 done
4161
4162 check_cc <<EOF && enable pragma_deprecated
4163 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4164 EOF
4165
4166 check_cc <<EOF && enable attribute_packed
4167 struct { int x; } __attribute__((packed)) x;
4168 EOF
4169
4170 check_cc <<EOF && enable attribute_may_alias
4171 union { int x; } __attribute__((may_alias)) x;
4172 EOF
4173
4174 check_cc <<EOF || die "endian test failed"
4175 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4176 EOF
4177 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4178
4179 check_gas() {
4180     log "check_gas using '$as' as AS"
4181     # :vararg is used on aarch64, arm and ppc altivec
4182     check_as <<EOF || return 1
4183 .macro m n, y:vararg=0
4184 \n: .int \y
4185 .endm
4186 m x
4187 EOF
4188     # .altmacro is only used in arm asm
4189     ! enabled arm || check_as <<EOF || return 1
4190 .altmacro
4191 EOF
4192     enable gnu_as
4193     return 0
4194 }
4195
4196 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4197     nogas=:
4198     enabled_any arm aarch64 && nogas=die
4199     enabled_all ppc altivec && nogas=warn
4200     as_noop=-v
4201
4202     case $as_type in
4203         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4204         gcc)  gaspp_as_type=gas ;;
4205         *)    gaspp_as_type=$as_type ;;
4206     esac
4207
4208     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4209
4210     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4211         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4212
4213     if ! check_gas ; then
4214         as=${gas:=$as}
4215         check_gas || \
4216             $nogas "GNU assembler not found, install/update gas-preprocessor"
4217     fi
4218
4219     check_as <<EOF && enable as_func
4220 .func test
4221 .endfunc
4222 EOF
4223 fi
4224
4225 check_inline_asm inline_asm_labels '"1:\n"'
4226
4227 if enabled aarch64; then
4228     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4229     # internal assembler in clang 3.3 does not support this instruction
4230     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4231     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4232
4233     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4234
4235 elif enabled alpha; then
4236
4237     check_cflags -mieee
4238
4239 elif enabled arm; then
4240
4241     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4242     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4243     enabled thumb && check_cflags -mthumb || check_cflags -marm
4244
4245     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4246         enable vfp_args
4247     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4248         enable vfp_args
4249     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4250         case "${cross_prefix:-$cc}" in
4251             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4252             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4253 __asm__ (".eabi_attribute 28, 1");
4254 int main(void) { return 0; }
4255 EOF
4256         esac
4257         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4258     fi
4259
4260     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4261     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4262     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4263     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4264     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4265     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4266
4267     [ $target_os = linux ] || [ $target_os = android ] ||
4268         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4269             $ARCH_EXT_LIST_ARM
4270
4271     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4272
4273     check_as <<EOF && enable as_dn_directive
4274 ra .dn d0.i16
4275 .unreq ra
4276 EOF
4277     check_as <<EOF && enable as_fpu_directive
4278 .fpu neon
4279 EOF
4280
4281     # llvm's integrated assembler supports .object_arch from llvm 3.5
4282     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4283 .object_arch armv4
4284 EOF
4285
4286     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4287
4288 elif enabled mips; then
4289
4290     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4291
4292     # make sure that only an instruction set is enabled
4293     disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4294
4295     if enabled mips64; then
4296         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4297             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4298                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4299     else
4300         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4301             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4302                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4303     fi
4304
4305 elif enabled parisc; then
4306
4307     if enabled gcc; then
4308         case $($cc -dumpversion) in
4309             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4310         esac
4311     fi
4312
4313 elif enabled ppc; then
4314
4315     enable local_aligned_8 local_aligned_16 local_aligned_32
4316
4317     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4318     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4319     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4320     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4321
4322     # AltiVec flags: The FSF version of GCC differs from the Apple version
4323     if enabled altivec; then
4324         check_cflags -maltivec -mabi=altivec &&
4325         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4326         check_cflags -faltivec
4327
4328         # check if our compiler supports Motorola AltiVec C API
4329         check_cc <<EOF || disable altivec
4330 $inc_altivec_h
4331 int main(void) {
4332     vector signed int v1 = (vector signed int) { 0 };
4333     vector signed int v2 = (vector signed int) { 1 };
4334     v1 = vec_add(v1, v2);
4335     return 0;
4336 }
4337 EOF
4338
4339         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4340     fi
4341
4342     if enabled vsx; then
4343         check_cflags -mvsx &&
4344         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4345     fi
4346
4347     if enabled power8; then
4348         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4349     fi
4350
4351 elif enabled x86; then
4352
4353     check_builtin rdtsc    intrin.h   "__rdtsc()"
4354     check_builtin mm_empty mmintrin.h "_mm_empty()"
4355
4356     enable local_aligned_8 local_aligned_16 local_aligned_32
4357
4358     # check whether EBP is available on x86
4359     # As 'i' is stored on the stack, this program will crash
4360     # if the base pointer is used to access it because the
4361     # base pointer is cleared in the inline assembly code.
4362     check_exec_crash <<EOF && enable ebp_available
4363 volatile int i=0;
4364 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4365 return i;
4366 EOF
4367
4368     # check whether EBX is available on x86
4369     check_inline_asm ebx_available '""::"b"(0)' &&
4370         check_inline_asm ebx_available '"":::"%ebx"'
4371
4372     # check whether xmm clobbers are supported
4373     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4374
4375     # check whether binutils is new enough to compile SSSE3/MMXEXT
4376     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4377     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4378
4379     if ! disabled_any asm mmx yasm; then
4380         if check_cmd $yasmexe --version; then
4381             enabled x86_64 && yasm_extra="-m amd64"
4382             yasm_debug="-g dwarf2"
4383         elif check_cmd nasm -v; then
4384             yasmexe=nasm
4385             yasm_debug="-g -F dwarf"
4386             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4387         fi
4388
4389         YASMFLAGS="-f $objformat $yasm_extra"
4390         enabled pic               && append YASMFLAGS "-DPIC"
4391         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4392         case "$objformat" in
4393             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4394         esac
4395
4396         check_yasm "movbe ecx, [5]" && enable yasm ||
4397             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4398         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4399         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4400         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4401         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4402         check_yasm "CPU amdnop" || disable cpunop
4403     fi
4404
4405     case "$cpu" in
4406         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4407             disable fast_clz
4408         ;;
4409     esac
4410
4411 fi
4412
4413 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4414
4415 check_ldflags -Wl,--as-needed
4416
4417 if check_func dlopen; then
4418     ldl=
4419 elif check_func dlopen -ldl; then
4420     ldl=-ldl
4421 fi
4422
4423 if ! disabled network; then
4424     check_func getaddrinfo $network_extralibs
4425     check_func inet_aton $network_extralibs
4426
4427     check_type netdb.h "struct addrinfo"
4428     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4429     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4430     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4431     check_type poll.h "struct pollfd"
4432     check_type netinet/sctp.h "struct sctp_event_subscribe"
4433     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4434     check_type netinet/in.h "struct sockaddr_in6"
4435     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4436     check_type "sys/types.h sys/socket.h" socklen_t
4437
4438     # Prefer arpa/inet.h over winsock2
4439     if check_header arpa/inet.h ; then
4440         check_func closesocket
4441     elif check_header winsock2.h ; then
4442         check_func_headers winsock2.h closesocket -lws2 &&
4443             network_extralibs="-lws2" ||
4444         { check_func_headers winsock2.h closesocket -lws2_32 &&
4445             network_extralibs="-lws2_32"; } || disable winsock2_h network
4446         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4447
4448         check_type ws2tcpip.h socklen_t
4449         check_type ws2tcpip.h "struct addrinfo"
4450         check_type ws2tcpip.h "struct group_source_req"
4451         check_type ws2tcpip.h "struct ip_mreq_source"
4452         check_type ws2tcpip.h "struct ipv6_mreq"
4453         check_type winsock2.h "struct pollfd"
4454         check_struct winsock2.h "struct sockaddr" sa_len
4455         check_type ws2tcpip.h "struct sockaddr_in6"
4456         check_type ws2tcpip.h "struct sockaddr_storage"
4457     else
4458         disable network
4459     fi
4460 fi
4461
4462 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4463 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4464 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4465 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4466
4467 case "$custom_allocator" in
4468     jemalloc)
4469         # jemalloc by default does not use a prefix
4470         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4471     ;;
4472     tcmalloc)
4473         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
4474         malloc_prefix=tc_
4475     ;;
4476 esac
4477
4478 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4479 check_func  ${malloc_prefix}memalign            && enable memalign
4480 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4481
4482 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4483     check_func_headers time.h clock_gettime ||
4484         { check_lib time.h clock_gettime -lrt && LIBRT="-lrt"; }
4485
4486 check_func  fcntl
4487 check_func  fork
4488 check_func  gethrtime
4489 check_func  getopt
4490 check_func  getrusage
4491 check_func  gettimeofday
4492 check_func  gmtime_r
4493 check_func  isatty
4494 check_func  localtime_r
4495 check_func  mach_absolute_time
4496 check_func  mkstemp
4497 check_func  mmap
4498 check_func  mprotect
4499 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4500 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt; }
4501 check_func  sched_getaffinity
4502 check_func  setrlimit
4503 check_func  strerror_r
4504 check_func  sysconf
4505 check_func  sysctl
4506 check_func  usleep
4507
4508 check_func_headers io.h setmode
4509 check_func_headers stdlib.h getenv
4510
4511 check_func_headers windows.h CoTaskMemFree -lole32
4512 check_func_headers windows.h GetProcessAffinityMask
4513 check_func_headers windows.h GetProcessTimes
4514 check_func_headers windows.h GetSystemTimeAsFileTime
4515 check_func_headers windows.h LoadLibrary
4516 check_func_headers windows.h MapViewOfFile
4517 check_func_headers windows.h SetConsoleTextAttribute
4518 check_func_headers windows.h Sleep
4519 check_func_headers windows.h VirtualAlloc
4520 check_struct windows.h "CONDITION_VARIABLE" Ptr
4521
4522 check_header direct.h
4523 check_header dlfcn.h
4524 check_header d3d11.h
4525 check_header dxva.h
4526 check_header dxva2api.h
4527 check_header io.h
4528 check_header mach/mach_time.h
4529 check_header malloc.h
4530 check_header poll.h
4531 check_header sys/mman.h
4532 check_header sys/param.h
4533 check_header sys/resource.h
4534 check_header sys/select.h
4535 check_header sys/time.h
4536 check_header sys/un.h
4537 check_header unistd.h
4538 check_header valgrind/valgrind.h
4539 check_header vdpau/vdpau.h
4540 check_header vdpau/vdpau_x11.h
4541 check_header VideoDecodeAcceleration/VDADecoder.h
4542 check_header windows.h
4543 check_header X11/extensions/XvMClib.h
4544
4545 # it seems there are versions of clang in some distros that try to use the
4546 # gcc headers, which explodes for stdatomic
4547 # so we also check that atomics actually work here
4548 check_builtin stdatomic_h stdatomic.h "atomic_int foo; atomic_store(&foo, 0)"
4549
4550 check_lib "windows.h shellapi.h" CommandLineToArgvW   -lshell32
4551 check_lib "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
4552 check_lib "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
4553
4554 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4555
4556 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4557 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4558 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4559
4560 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
4561 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
4562 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
4563 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
4564 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
4565
4566 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
4567
4568 if ! disabled w32threads && ! enabled pthreads; then
4569     check_func_headers "windows.h process.h" _beginthreadex &&
4570         enable w32threads || disable w32threads
4571 fi
4572
4573 # check for some common methods of building with pthread support
4574 # do this before the optional library checks as some of them require pthreads
4575 if ! disabled pthreads && ! enabled w32threads; then
4576     enable pthreads
4577     if check_func pthread_join -pthread; then
4578         add_cflags -pthread
4579         add_extralibs -pthread
4580     elif check_func pthread_join -pthreads; then
4581         add_cflags -pthreads
4582         add_extralibs -pthreads
4583     elif check_func pthread_join -lpthreadGC2; then
4584         add_extralibs -lpthreadGC2
4585     elif check_lib pthread.h pthread_join -lpthread; then
4586         :
4587     elif ! check_func pthread_join; then
4588         disable pthreads
4589     fi
4590 fi
4591
4592 enabled pthreads &&
4593     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
4594
4595 disabled  zlib || check_lib  zlib.h      zlibVersion -lz   || disable  zlib
4596 disabled bzlib || check_lib bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4597
4598 check_lib math.h sin -lm && LIBM="-lm"
4599
4600 atan2f_args=2
4601 ldexpf_args=2
4602 powf_args=2
4603
4604 for func in $MATH_FUNCS; do
4605     eval check_mathfunc $func \${${func}_args:-1}
4606 done
4607
4608 # these are off by default, so fail if requested and not available
4609 enabled avisynth          && { check_lib "avisynth/avisynth_c.h windows.h" LoadLibrary ||
4610                                check_lib "avxsynth/avxsynth_c.h dlfcn.h" dlopen -ldl   ||
4611                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4612 enabled cuda              && check_lib cuda.h cuInit -lcuda
4613 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4614 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4615 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4616 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4617 enabled libfaac           && require libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4618 enabled libfdk_aac        && require_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4619 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4620 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4621 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4622                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4623                                done || die "ERROR: libgsm not found"; }
4624 enabled libhdcd           && require_pkg_config libhdcd "hdcd/hdcd_simple.h" hdcd_new
4625 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4626 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
4627 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
4628 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4629 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
4630 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4631 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4632 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4633 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
4634 enabled libopenjpeg       && { check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4635                                require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; }
4636 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4637 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4638 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4639 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4640 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
4641 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
4642 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4643 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4644 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4645 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4646 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4647 enabled libvpx            && require_pkg_config "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version && {
4648     enabled libvpx_vp8_decoder && {
4649         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
4650             disable libvpx_vp8_decoder;
4651     }
4652     enabled libvpx_vp8_encoder && {
4653         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
4654             disable libvpx_vp8_encoder;
4655     }
4656     enabled libvpx_vp9_decoder && {
4657         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
4658             disable libvpx_vp9_decoder;
4659     }
4660     enabled libvpx_vp9_encoder && {
4661         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
4662             disable libvpx_vp9_encoder;
4663     }
4664     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
4665         die "libvpx enabled but no supported decoders found"
4666     fi
4667 }
4668 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4669 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4670 enabled libx264           && require_pkg_config x264 "stdint.h x264.h" x264_encoder_encode &&
4671                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4672                                die "ERROR: libx264 version must be >= 0.118."; } &&
4673                              { check_cpp_condition x264.h "X264_MPEG2" &&
4674                                enable libx262; }
4675 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
4676                              { check_cpp_condition x265.h "X265_BUILD >= 57" ||
4677                                die "ERROR: libx265 version must be >= 57."; }
4678 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4679 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4680 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4681                                 { ! enabled cross_compile && {
4682                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
4683                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
4684                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
4685                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
4686                                die "ERROR: mmal not found"; }
4687 enabled mmal && check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"
4688 enabled omx_rpi && enable omx
4689 enabled omx               && { check_header OMX_Core.h ||
4690                                 { ! enabled cross_compile && enabled omx_rpi && {
4691                                     add_cflags -isystem/opt/vc/include/IL ; }
4692                                 check_header OMX_Core.h ; } ||
4693                                die "ERROR: OpenMAX IL headers not found"; }
4694 enabled openssl           && { check_pkg_config openssl openssl/ssl.h SSL_library_init && {
4695                                add_cflags $openssl_cflags && add_extralibs $openssl_libs; }||
4696                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4697                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4698                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4699                                die "ERROR: openssl not found"; }
4700
4701 if enabled gnutls; then
4702     { check_lib gmp.h mpz_export -lgmp && enable gmp; } ||
4703     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4704 fi
4705
4706 # libdc1394 check
4707 if enabled libdc1394; then
4708     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
4709         enable libdc1394_2; } ||
4710     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4711         enable libdc1394_1; } ||
4712     die "ERROR: No version of libdc1394 found "
4713 fi
4714
4715 if enabled nvenc; then
4716     check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."
4717     check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6" ||
4718         die "ERROR: NVENC API version 5 or older is not supported"
4719 fi
4720
4721 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4722     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4723     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4724     enable sdl
4725 fi
4726
4727 ! disabled pod2man   && check_cmd pod2man --help     && enable pod2man   || disable pod2man
4728 ! disabled texi2html && check_cmd texi2html -version && enable texi2html || disable texi2html
4729
4730 check_header linux/fb.h
4731 check_header linux/videodev2.h
4732 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4733
4734 check_header AVFoundation/AVFoundation.h &&
4735     check_objcflags -fobjc-arc &&
4736     add_extralibs -framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia ||
4737     disable AVFoundation_AVFoundation_h
4738
4739 check_header sys/videoio.h
4740
4741 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4742 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4743 # w32api 3.12 had it defined wrong
4744 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4745
4746 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4747 { check_header dev/bktr/ioctl_meteor.h &&
4748   check_header dev/bktr/ioctl_bt848.h; } ||
4749 { check_header machine/ioctl_meteor.h &&
4750   check_header machine/ioctl_bt848.h; } ||
4751 { check_header dev/video/meteor/ioctl_meteor.h &&
4752   check_header dev/video/bktr/ioctl_bt848.h; } ||
4753 check_header dev/ic/bt8xx.h
4754
4755 check_header sndio.h
4756 check_header sys/soundcard.h
4757 check_header soundcard.h
4758
4759 enabled_any alsa_indev alsa_outdev &&
4760     check_lib alsa/asoundlib.h snd_pcm_htimestamp -lasound
4761
4762 enabled jack_indev && check_lib jack/jack.h jack_client_open -ljack &&
4763     check_func jack_port_get_latency_range -ljack
4764
4765 enabled_any sndio_indev sndio_outdev && check_lib sndio.h sio_open -lsndio
4766
4767 if enabled libcdio; then
4768     check_lib "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4769     check_lib "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4770     die "ERROR: No usable libcdio/cdparanoia found"
4771 fi
4772
4773 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4774
4775 if enabled libxcb; then
4776     check_pkg_config xcb-shape xcb/shape.h xcb_shape_rectangles || {
4777         enabled libxcb && die "ERROR: libxcb not found";
4778     } && enable libxcb
4779
4780     disabled libxcb_shm ||
4781         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
4782             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
4783         } && check_header sys/shm.h && enable libxcb_shm
4784
4785     disabled libxcb_xfixes ||
4786         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
4787             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
4788         } && enable libxcb_xfixes
4789
4790     add_cflags "$xcb_event_cflags $xcb_shm_cflags $xcb_xfixes_cflags"
4791     add_extralibs "$xcb_event_libs $xcb_shm_libs $xcb_xfixes_libs"
4792 fi
4793
4794 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4795
4796 enabled vaapi &&
4797     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
4798     disable vaapi
4799
4800 if enabled vaapi ; then
4801     enabled xlib &&
4802     check_lib "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
4803     enable vaapi_x11
4804
4805     check_lib "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
4806     enable vaapi_drm
4807 fi
4808
4809 enabled vdpau &&
4810     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4811    &nbs