configure: MMAL-related decoders should depend on, not select, mmal
[libav.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken Libav."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --quiet                  Suppress showing informative output
67   --list-decoders          show all available decoders
68   --list-encoders          show all available encoders
69   --list-hwaccels          show all available hardware accelerators
70   --list-demuxers          show all available demuxers
71   --list-muxers            show all available muxers
72   --list-parsers           show all available parsers
73   --list-protocols         show all available protocols
74   --list-bsfs              show all available bitstream filters
75   --list-indevs            show all available input devices
76   --list-outdevs           show all available output devices
77   --list-filters           show all available filters
78
79 Standard options:
80   --logfile=FILE           log tests and output to FILE [config.log]
81   --disable-logging        do not log configure debug information
82   --prefix=PREFIX          install in PREFIX [$prefix_default]
83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
84   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
86   --libdir=DIR             install libs in DIR [PREFIX/lib]
87   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
88   --incdir=DIR             install includes in DIR [PREFIX/include]
89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
90   --enable-rpath           use rpath when linking programs (USE WITH CARE)
91
92 Licensing options:
93   --enable-gpl             allow use of GPL code, the resulting libs
94                            and binaries will be under GPL [no]
95   --enable-version3        upgrade (L)GPL to version 3 [no]
96   --enable-nonfree         allow use of nonfree code, the resulting libs
97                            and binaries will be unredistributable [no]
98
99 Configuration options:
100   --disable-static         do not build static libraries [no]
101   --enable-shared          build shared libraries [no]
102   --enable-small           optimize for size instead of speed
103   --enable-runtime-cpudetect detect CPU capabilities at runtime (bigger binary)
104   --enable-gray            enable full grayscale support (slower color)
105   --disable-swscale-alpha  disable alpha channel support in swscale
106   --disable-all            disable building components, libraries and programs
107
108 Program options:
109   --disable-programs       do not build command line programs
110   --disable-avconv         disable avconv build
111   --disable-avplay         disable avplay build
112   --disable-avprobe        disable avprobe build
113   --disable-avserver       deprecated, does nothing
114
115 Component options:
116   --disable-doc            do not build documentation
117   --disable-pod2man        do not build manual pages
118   --disable-texi2html      do not build HTML documentation
119   --disable-avdevice       disable libavdevice build
120   --disable-avcodec        disable libavcodec build
121   --disable-avformat       disable libavformat build
122   --disable-avutil         disable libavutil build
123   --disable-swscale        disable libswscale build
124   --disable-avfilter       disable video filter support [no]
125   --disable-avresample     disable libavresample build [no]
126   --disable-pthreads       disable pthreads [auto]
127   --disable-w32threads     disable Win32 threads [auto]
128   --disable-network        disable network support [no]
129   --disable-dct            disable DCT code
130   --disable-error-resilience disable error resilience code
131   --disable-lsp            disable LSP code
132   --disable-lzo            disable LZO decoder code
133   --disable-mdct           disable MDCT code
134   --disable-rdft           disable RDFT code
135   --disable-fft            disable FFT code
136   --disable-faan           disable floating point AAN (I)DCT code
137
138 Individual component options:
139   --disable-everything     disable all components listed below
140   --disable-encoder=NAME   disable encoder NAME
141   --enable-encoder=NAME    enable encoder NAME
142   --disable-encoders       disable all encoders
143   --disable-decoder=NAME   disable decoder NAME
144   --enable-decoder=NAME    enable decoder NAME
145   --disable-decoders       disable all decoders
146   --disable-hwaccel=NAME   disable hwaccel NAME
147   --enable-hwaccel=NAME    enable hwaccel NAME
148   --disable-hwaccels       disable all hwaccels
149   --disable-muxer=NAME     disable muxer NAME
150   --enable-muxer=NAME      enable muxer NAME
151   --disable-muxers         disable all muxers
152   --disable-demuxer=NAME   disable demuxer NAME
153   --enable-demuxer=NAME    enable demuxer NAME
154   --disable-demuxers       disable all demuxers
155   --enable-parser=NAME     enable parser NAME
156   --disable-parser=NAME    disable parser NAME
157   --disable-parsers        disable all parsers
158   --enable-bsf=NAME        enable bitstream filter NAME
159   --disable-bsf=NAME       disable bitstream filter NAME
160   --disable-bsfs           disable all bitstream filters
161   --enable-protocol=NAME   enable protocol NAME
162   --disable-protocol=NAME  disable protocol NAME
163   --disable-protocols      disable all protocols
164   --enable-indev=NAME      enable input device NAME
165   --disable-indev=NAME     disable input device NAME
166   --disable-indevs         disable input devices
167   --enable-outdev=NAME     enable output device NAME
168   --disable-outdev=NAME    disable output device NAME
169   --disable-outdevs        disable output devices
170   --disable-devices        disable all devices
171   --enable-filter=NAME     enable filter NAME
172   --disable-filter=NAME    disable filter NAME
173   --disable-filters        disable all filters
174
175 External library support:
176
177   Using any of the following switches will allow Libav to link to the
178   corresponding external library. All the components depending on that library
179   will become enabled, if all their other dependencies are met and they are not
180   explicitly disabled. E.g. --enable-libwavpack will enable linking to
181   libwavpack and allow the libwavpack encoder to be built, unless it is
182   specifically disabled with --disable-encoder=libwavpack.
183
184   Note that only the system libraries are auto-detected. All the other external
185   libraries must be explicitly enabled.
186
187   Also note that the following help text describes the purpose of the libraries
188   themselves, not all their features will necessarily be usable by Libav.
189
190   --enable-avisynth          video frameserver
191   --enable-bzlib             bzip2 compression [autodetect]
192   --enable-frei0r            video filtering plugins
193   --enable-gnutls            crypto
194   --enable-libbs2b           Bauer stereophonic-to-binaural DSP
195   --enable-libcdio           audio CD input
196   --enable-libdc1394         IEEE 1394/Firewire camera input
197   --enable-libdcadec         DCA audio decoding
198   --enable-libfaac           AAC audio encoding
199   --enable-libfdk-aac        AAC audio encoding/decoding
200   --enable-libfontconfig     font configuration and management
201   --enable-libfreetype       font rendering
202   --enable-libgsm            GSM audio encoding/decoding
203   --enable-libhdcd           HDCD decoding filter
204   --enable-libilbc           ILBC audio encoding/decoding
205   --enable-libkvazaar        HEVC video encoding
206   --enable-libmp3lame        MP3 audio encoding
207   --enable-libopencore-amrnb AMR-NB audio encoding/decoding
208   --enable-libopencore-amrwb AMR-WB audio decoding
209   --enable-libopencv         computer vision
210   --enable-libopenh264       H.264 video encoding/decoding
211   --enable-libopenjpeg       JPEG 2000 image encoding/decoding
212   --enable-libopus           Opus audio encoding/decoding
213   --enable-libpulse          Pulseaudio sound server
214   --enable-librtmp           RTMP streaming
215   --enable-libschroedinger   Dirac video encoding/decoding
216   --enable-libsnappy         snappy compression
217   --enable-libspeex          Speex audio encoding/decoding
218   --enable-libtheora         Theora video encoding/decoding
219   --enable-libtwolame        MP2 audio encoding
220   --enable-libvo-aacenc      AAC audio encoding
221   --enable-libvo-amrwbenc    AMR-WB audio encoding
222   --enable-libvorbis         Vorbis audio encoding/decoding
223   --enable-libvpx            VP* video encoding/decoding
224   --enable-libwavpack        Wavpack audio encoding/decoding
225   --enable-libwebp           WebP image encoding/decoding
226   --enable-libx264           H.264 video encoding
227   --enable-libx265           HEVC video encoding
228   --enable-libxavs           Chinese AVS video encoding
229   --enable-libxcb            X window system protocol communication
230   --enable-libxcb-shm        X11 shm communication [auto]
231   --enable-libxcb-xfixes     X11 mouse rendering [auto]
232   --enable-libxvid           MPEG-4 ASP video encoding
233   --enable-openssl           crypto
234   --enable-zlib              compression [autodetect]
235
236   The following libraries provide various hardware acceleration features:
237   --enable-cuda    Nvidia CUDA (dynamically linked)
238   --enable-d3d11va Microsoft Direct3D 11 video acceleration [auto]
239   --enable-dxva2   Microsoft DirectX 9 video acceleration [auto]
240   --enable-libmfx  Intel MediaSDK (AKA Quick Sync Video)
241   --enable-libnpp  Nvidia CUDA processing
242   --enable-mmal    Broadcom Multi-Media Abstraction Layer (Raspberry Pi)
243   --enable-nvenc   Nvidia video encoding
244   --enable-omx     OpenMAX IL
245   --enable-omx-rpi OpenMAX IL for Raspberry Pi
246   --enable-vaapi   Video Acceleration API (mainly Unix/Intel)
247   --enable-vda     Apple Video Decode Acceleration [auto]
248   --enable-vdpau   Nvidia Video Decode and Presentation API for Unix [auto]
249
250 Toolchain options:
251   --arch=ARCH              select architecture [$arch]
252   --cpu=CPU                select the minimum required CPU (affects
253                            instruction selection, may crash on older CPUs)
254   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
255   --enable-cross-compile   assume a cross-compiler is used
256   --sysroot=PATH           root of cross-build tree
257   --sysinclude=PATH        location of cross-build system headers
258   --target-os=OS           compiler targets OS [$target_os]
259   --target-exec=CMD        command to run executables on target
260   --target-path=DIR        path to view of build directory on target
261   --target-samples=DIR     path to samples directory on target
262   --toolchain=NAME         set tool defaults according to NAME
263   --nm=NM                  use nm tool
264   --ar=AR                  use archive tool AR [$ar_default]
265   --as=AS                  use assembler AS [$as_default]
266   --cc=CC                  use C compiler CC [$cc_default]
267   --objcc=OCC              use ObjC compiler OCC [$cc_default]
268   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
269   --ld=LD                  use linker LD
270   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
271   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
272   --host-cc=HOSTCC         use host C compiler HOSTCC
273   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
274   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
275   --host-ld=HOSTLD         use host linker HOSTLD
276   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
277   --host-libs=HLIBS        use libs HLIBS when linking for host
278   --host-os=OS             compiler host OS [$target_os]
279   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
280   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
281   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
282   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
283   --extra-libs=ELIBS       add ELIBS [$ELIBS]
284   --extra-version=STRING   version string suffix []
285   --optflags=OPTFLAGS      override optimization-related compiler flags
286   --build-suffix=SUFFIX    library name suffix []
287   --enable-pic             build position-independent code
288   --enable-thumb           compile for Thumb instruction set
289   --enable-lto             use link-time optimization
290   --env="ENV=override"     override the environment variables
291
292 Advanced options (experts only):
293   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
294   --custom-allocator=NAME  use a supported custom allocator
295   --disable-symver         disable symbol versioning
296   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
297   --disable-safe-bitstream-reader
298                            disable buffer boundary checking in bitreaders
299                            (faster, but may crash)
300   --enable-sram            allow use of on-chip SRAM
301
302 Optimization options (experts only):
303   --disable-asm            disable all assembly optimizations
304   --disable-altivec        disable AltiVec optimizations
305   --disable-vsx            disable VSX optimizations
306   --disable-power8         disable POWER8 optimizations
307   --disable-amd3dnow       disable 3DNow! optimizations
308   --disable-amd3dnowext    disable 3DNow! extended optimizations
309   --disable-mmx            disable MMX optimizations
310   --disable-mmxext         disable MMXEXT optimizations
311   --disable-sse            disable SSE optimizations
312   --disable-sse2           disable SSE2 optimizations
313   --disable-sse3           disable SSE3 optimizations
314   --disable-ssse3          disable SSSE3 optimizations
315   --disable-sse4           disable SSE4 optimizations
316   --disable-sse42          disable SSE4.2 optimizations
317   --disable-avx            disable AVX optimizations
318   --disable-xop            disable XOP optimizations
319   --disable-fma3           disable FMA3 optimizations
320   --disable-fma4           disable FMA4 optimizations
321   --disable-avx2           disable AVX2 optimizations
322   --disable-armv5te        disable armv5te optimizations
323   --disable-armv6          disable armv6 optimizations
324   --disable-armv6t2        disable armv6t2 optimizations
325   --disable-vfp            disable VFP optimizations
326   --disable-neon           disable NEON optimizations
327   --disable-inline-asm     disable use of inline assembly
328   --disable-yasm           disable use of nasm/yasm assembly
329
330 Developer options (useful when working on Libav itself):
331   --disable-debug          disable debugging symbols
332   --enable-debug=LEVEL     set the debug level [$debuglevel]
333   --disable-optimizations  disable compiler optimizations
334   --enable-extra-warnings  enable more compiler warnings
335   --samples=PATH           location of test samples for FATE, if not set use
336                            \$LIBAV_SAMPLES at make invocation time.
337   --enable-neon-clobber-test check NEON registers for clobbering (should be
338                            used only for debugging purposes)
339   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
340                            should be used only for debugging purposes)
341   --enable-random          randomly enable/disable components
342   --disable-random
343   --enable-random=LIST     randomly enable/disable specific components or
344   --disable-random=LIST    component groups. LIST is a comma-separated list
345                            of NAME[:PROB] entries where NAME is a component
346                            (group) and PROB the probability associated with
347                            NAME (default 0.5).
348   --random-seed=VALUE      seed value for --enable/disable-random
349   --disable-valgrind-backtrace do not print a backtrace under Valgrind
350                            (only applies to --disable-optimizations builds)
351
352 NOTE: Object files are built at the place where configure is launched.
353 EOF
354   exit 0
355 }
356
357 quotes='""'
358
359 log(){
360     echo "$@" >> $logfile
361 }
362
363 log_file(){
364     log BEGIN $1
365     i=1
366     while read line; do
367         printf '%5s   %s\n' "${i}" "${line}"
368         i=$(($i+1))
369     done < $1 >> $logfile
370     log END $1
371 }
372
373 echolog(){
374     log "$@"
375     echo "$@"
376 }
377
378 warn(){
379     log "WARNING: $*"
380     WARNINGS="${WARNINGS}WARNING: $*\n"
381 }
382
383 die(){
384     echolog "$@"
385     cat <<EOF
386
387 If you think configure made a mistake, make sure you are using the latest
388 version from Git.  If the latest version fails, report the problem to the
389 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
390 EOF
391     if disabled logging; then
392         cat <<EOF
393 Rerun configure with logging enabled (do not use --disable-logging), and
394 include the log this produces with your report.
395 EOF
396     else
397         cat <<EOF
398 Include the log file "$logfile" produced by configure as this will help
399 solving the problem.
400 EOF
401     fi
402     exit 1
403 }
404
405 # Avoid locale weirdness, besides we really just want to translate ASCII.
406 toupper(){
407     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
408 }
409
410 tolower(){
411     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
412 }
413
414 c_escape(){
415     echo "$*" | sed 's/["\\]/\\\0/g'
416 }
417
418 sh_quote(){
419     v=$(echo "$1" | sed "s/'/'\\\\''/g")
420     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
421     echo "$v"
422 }
423
424 cleanws(){
425     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
426 }
427
428 filter(){
429     pat=$1
430     shift
431     for v; do
432         eval "case $v in $pat) echo $v ;; esac"
433     done
434 }
435
436 filter_out(){
437     pat=$1
438     shift
439     for v; do
440         eval "case $v in $pat) ;; *) echo $v ;; esac"
441     done
442 }
443
444 map(){
445     m=$1
446     shift
447     for v; do eval $m; done
448 }
449
450 add_suffix(){
451     suffix=$1
452     shift
453     for v; do echo ${v}${suffix}; done
454 }
455
456 set_all(){
457     value=$1
458     shift
459     for var in $*; do
460         eval $var=$value
461     done
462 }
463
464 set_weak(){
465     value=$1
466     shift
467     for var; do
468         eval : \${$var:=$value}
469     done
470 }
471
472 sanitize_var_name(){
473     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
474 }
475
476 set_safe(){
477     var=$1
478     shift
479     eval $(sanitize_var_name "$var")='$*'
480 }
481
482 get_safe(){
483     eval echo \$$(sanitize_var_name "$1")
484 }
485
486 pushvar(){
487     for pvar in $*; do
488         eval level=\${${pvar}_level:=0}
489         eval ${pvar}_${level}="\$$pvar"
490         eval ${pvar}_level=$(($level+1))
491     done
492 }
493
494 popvar(){
495     for pvar in $*; do
496         eval level=\${${pvar}_level:-0}
497         test $level = 0 && continue
498         eval level=$(($level-1))
499         eval $pvar="\${${pvar}_${level}}"
500         eval ${pvar}_level=$level
501         eval unset ${pvar}_${level}
502     done
503 }
504
505 enable(){
506     set_all yes $*
507 }
508
509 disable(){
510     set_all no $*
511 }
512
513 enable_weak(){
514     set_weak yes $*
515 }
516
517 disable_weak(){
518     set_weak no $*
519 }
520
521 enable_safe(){
522     for var; do
523         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
524     done
525 }
526
527 disable_safe(){
528     for var; do
529         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
530     done
531 }
532
533 do_enable_deep(){
534     for var; do
535         enabled $var && continue
536         eval sel="\$${var}_select"
537         eval sgs="\$${var}_suggest"
538         pushvar var sgs
539         enable_deep $sel
540         popvar sgs
541         enable_deep_weak $sgs
542         popvar var
543     done
544 }
545
546 enable_deep(){
547     do_enable_deep $*
548     enable $*
549 }
550
551 enable_deep_weak(){
552     for var; do
553         disabled $var && continue
554         pushvar var
555         do_enable_deep $var
556         popvar var
557         enable_weak $var
558     done
559 }
560
561 enabled(){
562     test "${1#!}" = "$1" && op== || op=!=
563     eval test "x\$${1#!}" $op "xyes"
564 }
565
566 disabled(){
567     test "${1#!}" = "$1" && op== || op=!=
568     eval test "x\$${1#!}" $op "xno"
569 }
570
571 enabled_all(){
572     for opt; do
573         enabled $opt || return 1
574     done
575 }
576
577 disabled_all(){
578     for opt; do
579         disabled $opt || return 1
580     done
581 }
582
583 enabled_any(){
584     for opt; do
585         enabled $opt && return 0
586     done
587 }
588
589 disabled_any(){
590     for opt; do
591         disabled $opt && return 0
592     done
593     return 1
594 }
595
596 set_default(){
597     for opt; do
598         eval : \${$opt:=\$${opt}_default}
599     done
600 }
601
602 is_in(){
603     value=$1
604     shift
605     for var in $*; do
606         [ $var = $value ] && return 0
607     done
608     return 1
609 }
610
611 do_check_deps(){
612     for cfg; do
613         cfg="${cfg#!}"
614         enabled ${cfg}_checking && die "Circular dependency for $cfg."
615         disabled ${cfg}_checking && continue
616         enable ${cfg}_checking
617         append allopts $cfg
618
619         eval dep_all="\$${cfg}_deps"
620         eval dep_any="\$${cfg}_deps_any"
621         eval dep_sel="\$${cfg}_select"
622         eval dep_sgs="\$${cfg}_suggest"
623         eval dep_ifa="\$${cfg}_if"
624         eval dep_ifn="\$${cfg}_if_any"
625
626         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
627         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
628         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
629
630         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
631         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
632         enabled_all  $dep_all || disable $cfg
633         enabled_any  $dep_any || disable $cfg
634         disabled_any $dep_sel && disable $cfg
635
636         if enabled $cfg; then
637             enable_deep $dep_sel
638             enable_deep_weak $dep_sgs
639         fi
640
641         disable ${cfg}_checking
642     done
643 }
644
645 check_deps(){
646     unset allopts
647
648     do_check_deps "$@"
649
650     for cfg in $allopts; do
651         enabled $cfg || continue
652         eval dep_extralibs="\$${cfg}_extralibs"
653         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
654     done
655 }
656
657 print_config(){
658     pfx=$1
659     files=$2
660     shift 2
661     map 'eval echo "$v \${$v:-no}"' "$@" |
662     awk "BEGIN { split(\"$files\", files) }
663         {
664             c = \"$pfx\" toupper(\$1);
665             v = \$2;
666             sub(/yes/, 1, v);
667             sub(/no/,  0, v);
668             for (f in files) {
669                 file = files[f];
670                 if (file ~ /\\.h\$/) {
671                     printf(\"#define %s %d\\n\", c, v) >>file;
672                 } else if (file ~ /\\.asm\$/) {
673                     printf(\"%%define %s %d\\n\", c, v) >>file;
674                 } else if (file ~ /\\.mak\$/) {
675                     n = -v ? \"\" : \"!\";
676                     printf(\"%s%s=yes\\n\", n, c) >>file;
677                 }
678             }
679         }"
680 }
681
682 print_enabled(){
683     suf=$1
684     shift
685     for v; do
686         enabled $v && printf "%s\n" ${v%$suf}
687     done
688 }
689
690 append(){
691     var=$1
692     shift
693     eval "$var=\"\$$var $*\""
694 }
695
696 prepend(){
697     var=$1
698     shift
699     eval "$var=\"$* \$$var\""
700 }
701
702 unique(){
703     var=$1
704     uniq_list=""
705     for tok in $(eval echo \$$var); do
706         uniq_list="$(filter_out $tok $uniq_list) $tok"
707     done
708     eval "$var=\"${uniq_list}\""
709 }
710
711 add_cppflags(){
712     append CPPFLAGS "$@"
713 }
714
715 add_cflags(){
716     append CFLAGS $($cflags_filter "$@")
717 }
718
719 add_asflags(){
720     append ASFLAGS $($asflags_filter "$@")
721 }
722
723 add_objcflags(){
724     append OBJCFLAGS $($objcflags_filter "$@")
725 }
726
727 add_ldflags(){
728     append LDFLAGS $($ldflags_filter "$@")
729 }
730
731 add_ldexeflags(){
732     append LDEXEFLAGS $($ldflags_filter "$@")
733 }
734
735 add_stripflags(){
736     append STRIPFLAGS "$@"
737 }
738
739 add_extralibs(){
740     prepend extralibs $($ldflags_filter "$@")
741 }
742
743 add_host_cppflags(){
744     append host_cppflags "$@"
745 }
746
747 add_host_cflags(){
748     append host_cflags $($host_cflags_filter "$@")
749 }
750
751 add_host_ldflags(){
752     append host_ldflags $($host_ldflags_filter "$@")
753 }
754
755 add_compat(){
756     append compat_objs $1
757     shift
758     map 'add_cppflags -D$v' "$@"
759 }
760
761 check_cmd(){
762     log "$@"
763     "$@" >> $logfile 2>&1
764 }
765
766 cc_o(){
767     eval printf '%s\\n' $CC_O
768 }
769
770 cc_e(){
771     eval printf '%s\\n' $CC_E
772 }
773
774 check_cc(){
775     log check_cc "$@"
776     cat > $TMPC
777     log_file $TMPC
778     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
779 }
780
781 check_objcc(){
782     log check_objcc "$@"
783     cat > $TMPC
784     log_file $TMPC
785     check_cmd $objcc $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPC
786 }
787
788 check_cpp(){
789     log check_cpp "$@"
790     cat > $TMPC
791     log_file $TMPC
792     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
793 }
794
795 as_o(){
796     eval printf '%s\\n' $AS_O
797 }
798
799 check_as(){
800     log check_as "$@"
801     cat > $TMPS
802     log_file $TMPS
803     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
804 }
805
806 check_inline_asm(){
807     log check_inline_asm "$@"
808     name="$1"
809     code="$2"
810     shift 2
811     disable $name
812     check_cc "$@" <<EOF && enable $name
813 void foo(void){ __asm__ volatile($code); }
814 EOF
815 }
816
817 check_insn(){
818     log check_insn "$@"
819     check_inline_asm ${1}_inline "\"$2\""
820     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
821 }
822
823 check_yasm(){
824     log check_yasm "$@"
825     echo "$1" > $TMPS
826     log_file $TMPS
827     shift 1
828     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
829 }
830
831 ld_o(){
832     eval printf '%s\\n' $LD_O
833 }
834
835 check_ld(){
836     log check_ld "$@"
837     flags=$(filter_out '-l*' "$@")
838     libs=$(filter '-l*' "$@")
839     check_cc $($cflags_filter $flags) || return
840     flags=$($ldflags_filter $flags)
841     libs=$($ldflags_filter $libs)
842     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
843 }
844
845 print_include(){
846     hdr=$1
847     test "${hdr%.h}" = "${hdr}" &&
848         echo "#include $hdr"    ||
849         echo "#include <$hdr>"
850 }
851
852 check_code(){
853     log check_code "$@"
854     check=$1
855     headers=$2
856     code=$3
857     shift 3
858     {
859         for hdr in $headers; do
860             print_include $hdr
861         done
862         echo "int main(void) { $code; return 0; }"
863     } | check_$check "$@"
864 }
865
866 check_cppflags(){
867     log check_cppflags "$@"
868     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
869 int x;
870 EOF
871 }
872
873 test_cflags(){
874     log test_cflags "$@"
875     set -- $($cflags_filter "$@")
876     check_cc "$@" <<EOF
877 int x;
878 EOF
879 }
880
881 check_cflags(){
882     log check_cflags "$@"
883     test_cflags "$@" && add_cflags "$@"
884 }
885
886 test_objcflags(){
887     log test_objcflags "$@"
888     set -- $($objcflags_filter "$@")
889     check_objcc "$@" <<EOF
890 int x;
891 EOF
892 }
893
894 check_objcflags(){
895     log check_objcflags "$@"
896     test_objcflags "$@" && add_objcflags "$@"
897 }
898
899 test_ldflags(){
900     log test_ldflags "$@"
901     check_ld "$@" <<EOF
902 int main(void){ return 0; }
903 EOF
904 }
905
906 check_ldflags(){
907     log check_ldflags "$@"
908     test_ldflags "$@" && add_ldflags "$@"
909 }
910
911 test_stripflags(){
912     log test_stripflags "$@"
913     # call check_cc to get a fresh TMPO
914     check_cc <<EOF
915 int main(void) { return 0; }
916 EOF
917     check_cmd $strip $STRIPFLAGS "$@" $TMPO
918 }
919
920 check_stripflags(){
921     log check_stripflags "$@"
922     test_stripflags "$@" && add_stripflags "$@"
923 }
924
925 check_header(){
926     log check_header "$@"
927     header=$1
928     shift
929     disable_safe $header
930     check_cpp "$@" <<EOF && enable_safe $header
931 #include <$header>
932 int x;
933 EOF
934 }
935
936 check_func(){
937     log check_func "$@"
938     func=$1
939     shift
940     disable $func
941     check_ld "$@" <<EOF && enable $func
942 extern int $func();
943 int main(void){ $func(); }
944 EOF
945 }
946
947 check_mathfunc(){
948     log check_mathfunc "$@"
949     func=$1
950     narg=$2
951     shift 2
952     test $narg = 2 && args="f, g" || args="f"
953     disable $func
954     check_ld "$@" <<EOF && enable $func
955 #include <math.h>
956 float foo(float f, float g) { return $func($args); }
957 int main(void){ return 0; }
958 EOF
959 }
960
961 check_func_headers(){
962     log check_func_headers "$@"
963     headers=$1
964     funcs=$2
965     shift 2
966     {
967         for hdr in $headers; do
968             print_include $hdr
969         done
970         for func in $funcs; do
971             echo "long check_$func(void) { return (long) $func; }"
972         done
973         echo "int main(void) { return 0; }"
974     } | check_ld "$@" && enable $funcs && enable_safe $headers
975 }
976
977 check_cpp_condition(){
978     log check_cpp_condition "$@"
979     header=$1
980     condition=$2
981     shift 2
982     check_cpp "$@" <<EOF
983 #include <$header>
984 #if !($condition)
985 #error "unsatisfied condition: $condition"
986 #endif
987 EOF
988 }
989
990 test_cflags_cpp(){
991     log test_cflags_cpp "$@"
992     flags=$1
993     condition=$2
994     shift 2
995     set -- $($cflags_filter "$flags")
996     check_cpp "$@" <<EOF
997 #if !($condition)
998 #error "unsatisfied condition: $condition"
999 #endif
1000 EOF
1001 }
1002
1003 check_lib(){
1004     log check_lib "$@"
1005     headers="$1"
1006     funcs="$2"
1007     shift 2
1008     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1009 }
1010
1011 check_pkg_config(){
1012     log check_pkg_config "$@"
1013     pkg="$1"
1014     headers="$2"
1015     funcs="$3"
1016     shift 3
1017     check_cmd $pkg_config --exists --print-errors $pkg || return
1018     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1019     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1020     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1021         set_safe "${pkg}_cflags" $pkg_cflags   &&
1022         set_safe "${pkg}_libs"   $pkg_libs
1023 }
1024
1025 check_exec(){
1026     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1027 }
1028
1029 check_exec_crash(){
1030     log check_exec_crash "$@"
1031     code=$(cat)
1032
1033     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1034     # are safe but may not be available everywhere.  Thus we use
1035     # raise(SIGTERM) instead.  The check is run in a subshell so we
1036     # can redirect the "Terminated" message from the shell.  SIGBUS
1037     # is not defined by standard C so it is used conditionally.
1038
1039     (check_exec "$@") >> $logfile 2>&1 <<EOF
1040 #include <signal.h>
1041 static void sighandler(int sig){
1042     raise(SIGTERM);
1043 }
1044 int foo(void){
1045     $code
1046 }
1047 int (*func_ptr)(void) = foo;
1048 int main(void){
1049     signal(SIGILL, sighandler);
1050     signal(SIGFPE, sighandler);
1051     signal(SIGSEGV, sighandler);
1052 #ifdef SIGBUS
1053     signal(SIGBUS, sighandler);
1054 #endif
1055     return func_ptr();
1056 }
1057 EOF
1058 }
1059
1060 check_type(){
1061     log check_type "$@"
1062     headers=$1
1063     type=$2
1064     shift 2
1065     disable_safe "$type"
1066     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1067 }
1068
1069 check_struct(){
1070     log check_struct "$@"
1071     headers=$1
1072     struct=$2
1073     member=$3
1074     shift 3
1075     disable_safe "${struct}_${member}"
1076     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1077         enable_safe "${struct}_${member}"
1078 }
1079
1080 check_builtin(){
1081     log check_builtin "$@"
1082     name=$1
1083     headers=$2
1084     builtin=$3
1085     shift 3
1086     disable "$name"
1087     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1088 }
1089
1090 check_compile_assert(){
1091     log check_compile_assert "$@"
1092     name=$1
1093     headers=$2
1094     condition=$3
1095     shift 3
1096     disable "$name"
1097     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1098 }
1099
1100 require(){
1101     log require "$@"
1102     name="$1"
1103     headers="$2"
1104     func="$3"
1105     shift 3
1106     check_lib "$headers" $func "$@" || die "ERROR: $name not found"
1107 }
1108
1109 require_pkg_config(){
1110     log require_pkg_config "$@"
1111     pkg="$1"
1112     check_pkg_config "$@" || die "ERROR: $pkg not found"
1113     add_cflags    $(get_safe "${pkg}_cflags")
1114     add_extralibs $(get_safe "${pkg}_libs")
1115 }
1116
1117 hostcc_e(){
1118     eval printf '%s\\n' $HOSTCC_E
1119 }
1120
1121 hostcc_o(){
1122     eval printf '%s\\n' $HOSTCC_O
1123 }
1124
1125 check_host_cc(){
1126     log check_host_cc "$@"
1127     cat > $TMPC
1128     log_file $TMPC
1129     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1130 }
1131
1132 check_host_cpp(){
1133     log check_host_cpp "$@"
1134     cat > $TMPC
1135     log_file $TMPC
1136     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1137 }
1138
1139 check_host_cppflags(){
1140     log check_host_cppflags "$@"
1141     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1142 int x;
1143 EOF
1144 }
1145
1146 check_host_cflags(){
1147     log check_host_cflags "$@"
1148     set -- $($host_cflags_filter "$@")
1149     check_host_cc "$@" <<EOF && append host_cflags "$@"
1150 int x;
1151 EOF
1152 }
1153
1154 check_host_cpp_condition(){
1155     log check_host_cpp_condition "$@"
1156     header=$1
1157     condition=$2
1158     shift 2
1159     check_host_cpp "$@" <<EOF
1160 #include <$header>
1161 #if !($condition)
1162 #error "unsatisfied condition: $condition"
1163 #endif
1164 EOF
1165 }
1166
1167 apply(){
1168     file=$1
1169     shift
1170     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1171 }
1172
1173 cp_if_changed(){
1174     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1175     mkdir -p "$(dirname $2)"
1176     $cp_f "$1" "$2"
1177 }
1178
1179 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1180 # system-dependent things.
1181
1182 AVCODEC_COMPONENTS="
1183     bsfs
1184     decoders
1185     encoders
1186     hwaccels
1187     parsers
1188 "
1189
1190 AVDEVICE_COMPONENTS="
1191     indevs
1192     outdevs
1193 "
1194 AVFILTER_COMPONENTS="
1195     filters
1196 "
1197 AVFORMAT_COMPONENTS="
1198     demuxers
1199     muxers
1200     protocols
1201 "
1202
1203 AVRESAMPLE_COMPONENTS=""
1204 AVUTIL_COMPONENTS=""
1205
1206 COMPONENT_LIST="
1207     $AVCODEC_COMPONENTS
1208     $AVDEVICE_COMPONENTS
1209     $AVFILTER_COMPONENTS
1210     $AVFORMAT_COMPONENTS
1211     $AVRESAMPLE_COMPONENTS
1212     $AVUTIL_COMPONENTS
1213 "
1214
1215 EXAMPLE_LIST="
1216     decode_audio_example
1217     decode_video_example
1218     encode_audio_example
1219     encode_video_example
1220     filter_audio_example
1221     metadata_example
1222     output_example
1223     qsvdec_example
1224     transcode_aac_example
1225 "
1226
1227 HWACCEL_LIBRARY_NONFREE_LIST="
1228     cuda
1229     libnpp
1230 "
1231 HWACCEL_LIBRARY_LIST="
1232     $HWACCEL_LIBRARY_NONFREE_LIST
1233     d3d11va
1234     dxva2
1235     libmfx
1236     mmal
1237     nvenc
1238     omx
1239     vaapi
1240     vda
1241     vdpau
1242 "
1243
1244 EXTERNAL_LIBRARY_GPL_LIST="
1245     libcdio
1246     libx264
1247     libx265
1248     libxavs
1249     libxvid
1250 "
1251
1252 EXTERNAL_LIBRARY_NONFREE_LIST="
1253     libfaac
1254     libfdk_aac
1255     openssl
1256 "
1257
1258 EXTERNAL_LIBRARY_VERSION3_LIST="
1259     libopencore_amrnb
1260     libopencore_amrwb
1261     libvo_aacenc
1262     libvo_amrwbenc
1263 "
1264
1265 EXTERNAL_LIBRARY_LIST="
1266     $EXTERNAL_LIBRARY_GPL_LIST
1267     $EXTERNAL_LIBRARY_NONFREE_LIST
1268     $EXTERNAL_LIBRARY_VERSION3_LIST
1269     avisynth
1270     bzlib
1271     frei0r
1272     gnutls
1273     libbs2b
1274     libdc1394
1275     libdcadec
1276     libfontconfig
1277     libfreetype
1278     libgsm
1279     libhdcd
1280     libilbc
1281     libkvazaar
1282     libmp3lame
1283     libopencv
1284     libopenh264
1285     libopenjpeg
1286     libopus
1287     libpulse
1288     librtmp
1289     libschroedinger
1290     libsnappy
1291     libspeex
1292     libtheora
1293     libtwolame
1294     libvorbis
1295     libvpx
1296     libwavpack
1297     libwebp
1298     libxcb
1299     libxcb_shm
1300     libxcb_xfixes
1301     zlib
1302 "
1303
1304 FEATURE_LIST="
1305     gray
1306     hardcoded_tables
1307     omx_rpi
1308     runtime_cpudetect
1309     safe_bitstream_reader
1310     shared
1311     small
1312     sram
1313     static
1314     swscale_alpha
1315 "
1316
1317 LIBRARY_LIST="
1318     avcodec
1319     avdevice
1320     avfilter
1321     avformat
1322     avresample
1323     avutil
1324     swscale
1325 "
1326
1327 LICENSE_LIST="
1328     gpl
1329     nonfree
1330     version3
1331 "
1332
1333 PROGRAM_LIST="
1334     avconv
1335     avplay
1336     avprobe
1337 "
1338
1339 SUBSYSTEM_LIST="
1340     dct
1341     doc
1342     error_resilience
1343     faan
1344     fft
1345     lsp
1346     lzo
1347     mdct
1348     network
1349     rdft
1350 "
1351
1352 CONFIG_LIST="
1353     $COMPONENT_LIST
1354     $EXAMPLE_LIST
1355     $EXTERNAL_LIBRARY_LIST
1356     $HWACCEL_LIBRARY_LIST
1357     $FEATURE_LIST
1358     $LICENSE_LIST
1359     $LIBRARY_LIST
1360     $PROGRAM_LIST
1361     $SUBSYSTEM_LIST
1362     neon_clobber_test
1363     pic
1364     pod2man
1365     texi2html
1366     thumb
1367     valgrind_backtrace
1368     xmm_clobber_test
1369 "
1370
1371 THREADS_LIST="
1372     pthreads
1373     w32threads
1374 "
1375
1376 ATOMICS_LIST="
1377     atomics_gcc
1378     atomics_suncc
1379     atomics_win32
1380 "
1381
1382 ARCH_LIST="
1383     aarch64
1384     alpha
1385     arm
1386     avr32
1387     avr32_ap
1388     avr32_uc
1389     bfin
1390     ia64
1391     m68k
1392     mips
1393     mips64
1394     parisc
1395     ppc
1396     ppc64
1397     s390
1398     sh4
1399     sparc
1400     sparc64
1401     tilegx
1402     tilepro
1403     tomi
1404     x86
1405     x86_32
1406     x86_64
1407 "
1408
1409 ARCH_EXT_LIST_ARM="
1410     armv5te
1411     armv6
1412     armv6t2
1413     armv8
1414     neon
1415     vfp
1416     vfpv3
1417 "
1418
1419 ARCH_EXT_LIST_X86_SIMD="
1420     amd3dnow
1421     amd3dnowext
1422     avx
1423     avx2
1424     fma3
1425     fma4
1426     mmx
1427     mmxext
1428     sse
1429     sse2
1430     sse3
1431     sse4
1432     sse42
1433     ssse3
1434     xop
1435 "
1436
1437 ARCH_EXT_LIST_PPC="
1438     altivec
1439     dcbzl
1440     ldbrx
1441     power8
1442     ppc4xx
1443     vsx
1444 "
1445
1446 ARCH_EXT_LIST_X86="
1447     $ARCH_EXT_LIST_X86_SIMD
1448     cpunop
1449     i686
1450 "
1451
1452 ARCH_EXT_LIST_MIPS="
1453     loongson
1454     mips32r1
1455     mips64r1
1456     mips32r2
1457     mips64r2
1458     mips32r6
1459     mips64r6
1460 "
1461
1462 ARCH_EXT_LIST="
1463     $ARCH_EXT_LIST_ARM
1464     $ARCH_EXT_LIST_MIPS
1465     $ARCH_EXT_LIST_PPC
1466     $ARCH_EXT_LIST_X86
1467     vis
1468 "
1469
1470 ARCH_FEATURES="
1471     aligned_stack
1472     fast_64bit
1473     fast_clz
1474     fast_cmov
1475     local_aligned_8
1476     local_aligned_16
1477     local_aligned_32
1478     simd_align_16
1479     simd_align_32
1480 "
1481
1482 BUILTIN_LIST="
1483     atomic_cas_ptr
1484     machine_rw_barrier
1485     MemoryBarrier
1486     mm_empty
1487     rdtsc
1488     sem_timedwait
1489     sync_val_compare_and_swap
1490 "
1491 HAVE_LIST_CMDLINE="
1492     inline_asm
1493     symver
1494     yasm
1495 "
1496
1497 HAVE_LIST_PUB="
1498     bigendian
1499     fast_unaligned
1500 "
1501
1502 HEADERS_LIST="
1503     AVFoundation_AVFoundation_h
1504     alsa_asoundlib_h
1505     altivec_h
1506     arpa_inet_h
1507     cdio_paranoia_h
1508     cdio_paranoia_paranoia_h
1509     dispatch_dispatch_h
1510     dev_bktr_ioctl_bt848_h
1511     dev_bktr_ioctl_meteor_h
1512     dev_ic_bt8xx_h
1513     dev_video_bktr_ioctl_bt848_h
1514     dev_video_meteor_ioctl_meteor_h
1515     direct_h
1516     dlfcn_h
1517     d3d11_h
1518     dxva_h
1519     gsm_h
1520     io_h
1521     mach_mach_time_h
1522     machine_ioctl_bt848_h
1523     machine_ioctl_meteor_h
1524     malloc_h
1525     poll_h
1526     sndio_h
1527     soundcard_h
1528     stdatomic_h
1529     sys_mman_h
1530     sys_param_h
1531     sys_resource_h
1532     sys_select_h
1533     sys_soundcard_h
1534     sys_time_h
1535     sys_un_h
1536     sys_videoio_h
1537     unistd_h
1538     valgrind_valgrind_h
1539     windows_h
1540     winsock2_h
1541 "
1542
1543 INTRINSICS_LIST="
1544     intrinsics_neon
1545 "
1546
1547 MATH_FUNCS="
1548     atanf
1549     atan2f
1550     cbrtf
1551     cosf
1552     exp2
1553     exp2f
1554     expf
1555     isinf
1556     isnan
1557     ldexpf
1558     llrint
1559     llrintf
1560     log2
1561     log2f
1562     log10f
1563     lrint
1564     lrintf
1565     powf
1566     rint
1567     round
1568     roundf
1569     sinf
1570     trunc
1571     truncf
1572 "
1573
1574 SYSTEM_FUNCS="
1575     aligned_malloc
1576     clock_gettime
1577     closesocket
1578     CommandLineToArgvW
1579     CoTaskMemFree
1580     CryptGenRandom
1581     dlopen
1582     fcntl
1583     flt_lim
1584     fork
1585     getaddrinfo
1586     gethrtime
1587     getopt
1588     GetProcessAffinityMask
1589     GetProcessMemoryInfo
1590     GetProcessTimes
1591     getrusage
1592     GetSystemTimeAsFileTime
1593     gettimeofday
1594     gmtime_r
1595     inet_aton
1596     isatty
1597     jack_port_get_latency_range
1598     LoadLibrary
1599     localtime_r
1600     mach_absolute_time
1601     MapViewOfFile
1602     memalign
1603     mkstemp
1604     mmap
1605     mprotect
1606     nanosleep
1607     posix_memalign
1608     sched_getaffinity
1609     SetConsoleTextAttribute
1610     setmode
1611     setrlimit
1612     Sleep
1613     strerror_r
1614     sysconf
1615     sysctl
1616     usleep
1617     VirtualAlloc
1618 "
1619
1620 TOOLCHAIN_FEATURES="
1621     as_dn_directive
1622     as_fpu_directive
1623     as_func
1624     as_object_arch
1625     asm_mod_q
1626     attribute_may_alias
1627     attribute_packed
1628     ebp_available
1629     ebx_available
1630     gnu_as
1631     ibm_asm
1632     inline_asm_labels
1633     pragma_deprecated
1634     symver_asm_label
1635     symver_gnu_asm
1636     vfp_args
1637     xform_asm
1638     xmm_clobbers
1639 "
1640
1641 TYPES_LIST="
1642     CONDITION_VARIABLE_Ptr
1643     socklen_t
1644     struct_addrinfo
1645     struct_group_source_req
1646     struct_ip_mreq_source
1647     struct_ipv6_mreq
1648     struct_pollfd
1649     struct_rusage_ru_maxrss
1650     struct_sockaddr_in6
1651     struct_sockaddr_sa_len
1652     struct_sockaddr_storage
1653     struct_v4l2_frmivalenum_discrete
1654 "
1655
1656 HAVE_LIST="
1657     $ARCH_EXT_LIST
1658     $(add_suffix _external $ARCH_EXT_LIST)
1659     $(add_suffix _inline   $ARCH_EXT_LIST)
1660     $ARCH_FEATURES
1661     $BUILTIN_LIST
1662     $HAVE_LIST_CMDLINE
1663     $HAVE_LIST_PUB
1664     $HEADERS_LIST
1665     $INTRINSICS_LIST
1666     $MATH_FUNCS
1667     $SYSTEM_FUNCS
1668     $THREADS_LIST
1669     $TOOLCHAIN_FEATURES
1670     $TYPES_LIST
1671     dos_paths
1672     dxva2_lib
1673     libc_msvcrt
1674     libdc1394_1
1675     libdc1394_2
1676     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1677     sdl
1678     section_data_rel_ro
1679     threads
1680     vaapi_drm
1681     vaapi_x11
1682     vdpau_x11
1683     xlib
1684 "
1685
1686 # options emitted with CONFIG_ prefix but not available on the command line
1687 CONFIG_EXTRA="
1688     aandcttables
1689     ac3dsp
1690     audio_frame_queue
1691     audiodsp
1692     blockdsp
1693     bswapdsp
1694     cabac
1695     dirac_parse
1696     dvprofile
1697     faandct
1698     faanidct
1699     fdctdsp
1700     flacdsp
1701     fmtconvert
1702     g722dsp
1703     gmp
1704     golomb
1705     gplv3
1706     h263dsp
1707     h264chroma
1708     h264dsp
1709     h264parse
1710     h264pred
1711     h264qpel
1712     hpeldsp
1713     huffman
1714     huffyuvdsp
1715     huffyuvencdsp
1716     idctdsp
1717     iirfilter
1718     imdct15
1719     intrax8
1720     iso_media
1721     ividsp
1722     jpegtables
1723     libx262
1724     lgplv3
1725     lpc
1726     lzf
1727     me_cmp
1728     mpeg_er
1729     mpegaudio
1730     mpegaudiodsp
1731     mpegvideo
1732     mpegvideoenc
1733     mss34dsp
1734     pixblockdsp
1735     qpeldsp
1736     qsv
1737     qsvdec
1738     qsvenc
1739     rangecoder
1740     riffdec
1741     riffenc
1742     rtpdec
1743     rtpenc_chain
1744     rv34dsp
1745     sinewin
1746     snappy
1747     srtp
1748     startcode
1749     texturedsp
1750     texturedspenc
1751     tpeldsp
1752     vaapi_encode
1753     vc1dsp
1754     videodsp
1755     vp3dsp
1756     vp56dsp
1757     vp8dsp
1758     wma_freqs
1759     wmv2dsp
1760 "
1761
1762 CMDLINE_SELECT="
1763     $ARCH_EXT_LIST
1764     $CONFIG_LIST
1765     $HAVE_LIST_CMDLINE
1766     $THREADS_LIST
1767     asm
1768     cross_compile
1769     debug
1770     extra_warnings
1771     logging
1772     lto
1773     optimizations
1774     rpath
1775 "
1776
1777 PATHS_LIST="
1778     bindir
1779     datadir
1780     docdir
1781     incdir
1782     libdir
1783     mandir
1784     prefix
1785     shlibdir
1786 "
1787
1788 CMDLINE_SET="
1789     $PATHS_LIST
1790     ar
1791     arch
1792     as
1793     build_suffix
1794     cc
1795     objcc
1796     cpu
1797     cross_prefix
1798     custom_allocator
1799     dep_cc
1800     env
1801     extra_version
1802     host_cc
1803     host_cflags
1804     host_ld
1805     host_ldflags
1806     host_libs
1807     host_os
1808     ld
1809     logfile
1810     malloc_prefix
1811     nm
1812     optflags
1813     pkg_config
1814     pkg_config_flags
1815     random_seed
1816     samples
1817     sysinclude
1818     sysroot
1819     target_exec
1820     target_os
1821     target_path
1822     target_samples
1823     toolchain
1824 "
1825
1826 CMDLINE_APPEND="
1827     extra_cflags
1828     extra_objcflags
1829     host_cppflags
1830 "
1831
1832 # code dependency declarations
1833
1834 # architecture extensions
1835
1836 armv5te_deps="arm"
1837 armv6_deps="arm"
1838 armv6t2_deps="arm"
1839 armv8_deps="aarch64"
1840 neon_deps_any="aarch64 arm"
1841 intrinsics_neon_deps="neon"
1842 vfp_deps_any="aarch64 arm"
1843 vfpv3_deps="vfp"
1844
1845 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1846
1847 altivec_deps="ppc"
1848 ppc4xx_deps="ppc"
1849 vsx_deps="altivec"
1850 power8_deps="vsx"
1851
1852 cpunop_deps="i686"
1853 x86_64_select="i686"
1854 x86_64_suggest="fast_cmov"
1855
1856 amd3dnow_deps="mmx"
1857 amd3dnowext_deps="amd3dnow"
1858 i686_deps="x86"
1859 mmx_deps="x86"
1860 mmxext_deps="mmx"
1861 sse_deps="mmxext"
1862 sse2_deps="sse"
1863 sse3_deps="sse2"
1864 ssse3_deps="sse3"
1865 sse4_deps="ssse3"
1866 sse42_deps="sse4"
1867 avx_deps="sse42"
1868 xop_deps="avx"
1869 fma3_deps="avx"
1870 fma4_deps="avx"
1871 avx2_deps="avx"
1872
1873 mmx_external_deps="yasm"
1874 mmx_inline_deps="inline_asm"
1875 mmx_suggest="mmx_external mmx_inline"
1876
1877 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1878     eval dep=\$${ext}_deps
1879     eval ${ext}_external_deps='"${dep}_external"'
1880     eval ${ext}_inline_deps='"${dep}_inline"'
1881     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1882 done
1883
1884 aligned_stack_if_any="aarch64 ppc x86"
1885 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1886 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1887 fast_unaligned_if_any="aarch64 ppc x86"
1888 simd_align_16_if_any="altivec neon sse"
1889 simd_align_32_if_any="avx"
1890
1891 # system capabilities
1892 symver_if_any="symver_asm_label symver_gnu_asm"
1893 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
1894
1895 # threading support
1896 atomics_gcc_if="sync_val_compare_and_swap"
1897 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1898 atomics_win32_if="MemoryBarrier"
1899 atomics_native_if_any="$ATOMICS_LIST"
1900 w32threads_deps="atomics_native"
1901 threads_if_any="$THREADS_LIST"
1902
1903 # subsystems
1904 dct_select="rdft"
1905 dirac_parse_select="golomb"
1906 error_resilience_select="me_cmp"
1907 faandct_deps="faan fdctdsp"
1908 faanidct_deps="faan idctdsp"
1909 h264dsp_select="startcode"
1910 intrax8_select="blockdsp idctdsp"
1911 mdct_select="fft"
1912 rdft_select="fft"
1913 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1914 mpeg_er_select="error_resilience"
1915 mpegaudio_select="mpegaudiodsp"
1916 mpegaudiodsp_select="dct"
1917 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1918 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1919 vc1dsp_select="h264chroma qpeldsp startcode"
1920
1921 # decoders / encoders
1922 aac_decoder_select="imdct15 mdct sinewin"
1923 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1924 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1925 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1926 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1927 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1928 adpcm_g722_decoder_select="g722dsp"
1929 adpcm_g722_encoder_select="g722dsp"
1930 aic_decoder_select="golomb idctdsp"
1931 alac_encoder_select="lpc"
1932 als_decoder_select="bswapdsp"
1933 amrnb_decoder_select="lsp"
1934 amrwb_decoder_select="lsp"
1935 amv_decoder_select="sp5x_decoder"
1936 ape_decoder_select="bswapdsp"
1937 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1938 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1939 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1940 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1941 atrac1_decoder_select="mdct sinewin"
1942 atrac3_decoder_select="mdct"
1943 atrac3p_decoder_select="mdct sinewin"
1944 bink_decoder_select="blockdsp hpeldsp"
1945 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1946 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1947 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1948 cllc_decoder_select="bswapdsp"
1949 comfortnoise_encoder_select="lpc"
1950 cook_decoder_select="audiodsp mdct sinewin"
1951 cscd_decoder_select="lzo"
1952 cscd_decoder_suggest="zlib"
1953 dca_decoder_select="fmtconvert mdct"
1954 dds_decoder_select="texturedsp"
1955 dnxhd_decoder_select="blockdsp idctdsp"
1956 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1957 dvvideo_decoder_select="dvprofile idctdsp"
1958 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1959 dxa_decoder_deps="zlib"
1960 dxv_decoder_select="lzf texturedsp"
1961 eac3_decoder_select="ac3_decoder"
1962 eac3_encoder_select="ac3_encoder"
1963 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1964 eatgq_decoder_select="aandcttables idctdsp"
1965 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
1966 exr_decoder_deps="zlib"
1967 ffv1_decoder_select="golomb rangecoder"
1968 ffv1_encoder_select="rangecoder"
1969 ffvhuff_decoder_select="huffyuv_decoder"
1970 ffvhuff_encoder_select="huffyuv_encoder"
1971 fic_decoder_select="golomb"
1972 flac_decoder_select="flacdsp golomb"
1973 flac_encoder_select="bswapdsp flacdsp golomb lpc"
1974 flashsv_decoder_deps="zlib"
1975 flashsv_encoder_deps="zlib"
1976 flashsv2_decoder_deps="zlib"
1977 flv_decoder_select="h263_decoder"
1978 flv_encoder_select="h263_encoder"
1979 fourxm_decoder_select="blockdsp bswapdsp"
1980 fraps_decoder_select="bswapdsp huffman"
1981 g2m_decoder_deps="zlib"
1982 g2m_decoder_select="blockdsp idctdsp jpegtables"
1983 h261_decoder_select="mpeg_er mpegvideo"
1984 h261_encoder_select="aandcttables mpegvideoenc"
1985 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1986 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1987 h263i_decoder_select="h263_decoder"
1988 h263p_encoder_select="h263_encoder"
1989 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
1990 h264_decoder_suggest="error_resilience"
1991 hap_decoder_select="snappy texturedsp"
1992 hap_encoder_deps="libsnappy"
1993 hap_encoder_select="texturedspenc"
1994 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1995 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1996 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1997 iac_decoder_select="imc_decoder"
1998 imc_decoder_select="bswapdsp fft mdct sinewin"
1999 indeo3_decoder_select="hpeldsp"
2000 indeo4_decoder_select="ividsp"
2001 indeo5_decoder_select="ividsp"
2002 interplay_video_decoder_select="hpeldsp"
2003 jpegls_decoder_select="golomb mjpeg_decoder"
2004 jpegls_encoder_select="golomb"
2005 jv_decoder_select="blockdsp"
2006 lagarith_decoder_select="huffyuvdsp"
2007 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2008 loco_decoder_select="golomb"
2009 magicyuv_decoder_select="huffyuvdsp"
2010 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2011 metasound_decoder_select="lsp mdct sinewin"
2012 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2013 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2014 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2015 mjpegb_decoder_select="mjpeg_decoder"
2016 mlp_decoder_select="mlp_parser"
2017 motionpixels_decoder_select="bswapdsp"
2018 mp1_decoder_select="mpegaudio"
2019 mp1float_decoder_select="mpegaudio"
2020 mp2_decoder_select="mpegaudio"
2021 mp2float_decoder_select="mpegaudio"
2022 mp3_decoder_select="mpegaudio"
2023 mp3adu_decoder_select="mpegaudio"
2024 mp3adufloat_decoder_select="mpegaudio"
2025 mp3float_decoder_select="mpegaudio"
2026 mp3on4_decoder_select="mpegaudio"
2027 mp3on4float_decoder_select="mpegaudio"
2028 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2029 mpc8_decoder_select="mpegaudiodsp"
2030 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2031 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2032 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2033 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2034 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2035 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2036 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2037 mpeg4_encoder_select="h263_encoder"
2038 msa1_decoder_select="mss34dsp"
2039 msmpeg4v1_decoder_select="h263_decoder"
2040 msmpeg4v2_decoder_select="h263_decoder"
2041 msmpeg4v2_encoder_select="h263_encoder"
2042 msmpeg4v3_decoder_select="h263_decoder"
2043 msmpeg4v3_encoder_select="h263_encoder"
2044 mss2_decoder_select="error_resilience mpeg_er mpegvideo vc1_decoder"
2045 mts2_decoder_select="mss34dsp"
2046 mxpeg_decoder_select="mjpeg_decoder"
2047 nellymoser_decoder_select="mdct sinewin"
2048 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2049 nuv_decoder_select="idctdsp lzo"
2050 on2avc_decoder_select="mdct"
2051 opus_decoder_deps="avresample"
2052 opus_decoder_select="imdct15"
2053 png_decoder_deps="zlib"
2054 png_encoder_deps="zlib"
2055 png_encoder_select="huffyuvencdsp"
2056 prores_decoder_select="idctdsp"
2057 prores_encoder_select="fdctdsp"
2058 qcelp_decoder_select="lsp"
2059 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2060 ra_144_encoder_select="audio_frame_queue lpc"
2061 ralf_decoder_select="golomb"
2062 rscc_decoder_deps="zlib"
2063 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2064 rv10_encoder_select="h263_encoder"
2065 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2066 rv20_encoder_select="h263_encoder"
2067 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2068 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2069 screenpresso_decoder_deps="zlib"
2070 shorten_decoder_select="golomb"
2071 sipr_decoder_select="lsp"
2072 sp5x_decoder_select="mjpeg_decoder"
2073 svq1_decoder_select="hpeldsp"
2074 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2075 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2076 svq3_decoder_suggest="zlib"
2077 tak_decoder_select="audiodsp"
2078 tdsc_decoder_deps="zlib"
2079 tdsc_decoder_select="mjpeg_decoder"
2080 theora_decoder_select="vp3_decoder"
2081 thp_decoder_select="mjpeg_decoder"
2082 tiff_decoder_suggest="zlib"
2083 tiff_encoder_suggest="zlib"
2084 truehd_decoder_select="mlp_decoder"
2085 truemotion2_decoder_select="bswapdsp"
2086 truespeech_decoder_select="bswapdsp"
2087 tscc_decoder_deps="zlib"
2088 txd_decoder_select="texturedsp"
2089 twinvq_decoder_select="mdct lsp sinewin"
2090 utvideo_decoder_select="bswapdsp"
2091 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2092 vble_decoder_select="huffyuvdsp"
2093 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2094 vc1image_decoder_select="vc1_decoder"
2095 vorbis_decoder_select="mdct"
2096 vorbis_encoder_select="mdct"
2097 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2098 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2099 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2100 vp6a_decoder_select="vp6_decoder"
2101 vp6f_decoder_select="vp6_decoder"
2102 vp7_decoder_select="h264pred videodsp vp8dsp"
2103 vp8_decoder_select="h264pred videodsp vp8dsp"
2104 vp9_decoder_select="videodsp"
2105 webp_decoder_select="vp8_decoder"
2106 wmapro_decoder_select="mdct sinewin wma_freqs"
2107 wmav1_decoder_select="mdct sinewin wma_freqs"
2108 wmav1_encoder_select="mdct sinewin wma_freqs"
2109 wmav2_decoder_select="mdct sinewin wma_freqs"
2110 wmav2_encoder_select="mdct sinewin wma_freqs"
2111 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2112 wmv1_decoder_select="h263_decoder"
2113 wmv1_encoder_select="h263_encoder"
2114 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2115 wmv2_encoder_select="h263_encoder wmv2dsp"
2116 wmv3_decoder_select="vc1_decoder"
2117 wmv3image_decoder_select="wmv3_decoder"
2118 zerocodec_decoder_deps="zlib"
2119 zlib_decoder_deps="zlib"
2120 zlib_encoder_deps="zlib"
2121 zmbv_decoder_deps="zlib"
2122 zmbv_encoder_deps="zlib"
2123
2124 # hardware accelerators
2125 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2126 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2127 vaapi_deps="va_va_h"
2128 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2129 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2130 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2131
2132 h263_vaapi_hwaccel_deps="vaapi"
2133 h263_vaapi_hwaccel_select="h263_decoder"
2134 h264_d3d11va_hwaccel_deps="d3d11va"
2135 h264_d3d11va_hwaccel_select="h264_decoder"
2136 h264_dxva2_hwaccel_deps="dxva2"
2137 h264_dxva2_hwaccel_select="h264_decoder"
2138 h264_mmal_decoder_deps="mmal"
2139 h264_mmal_hwaccel_deps="mmal"
2140 h264_omx_encoder_deps="omx"
2141 h264_qsv_hwaccel_deps="libmfx"
2142 h264_vaapi_hwaccel_deps="vaapi"
2143 h264_vaapi_hwaccel_select="h264_decoder"
2144 h264_vda_hwaccel_deps="vda"
2145 h264_vda_hwaccel_select="h264_decoder"
2146 h264_vda_old_hwaccel_deps="vda"
2147 h264_vda_old_hwaccel_select="h264_decoder"
2148 h264_vdpau_hwaccel_deps="vdpau"
2149 h264_vdpau_hwaccel_select="h264_decoder"
2150 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2151 hevc_d3d11va_hwaccel_select="hevc_decoder"
2152 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2153 hevc_dxva2_hwaccel_select="hevc_decoder"
2154 hevc_qsv_hwaccel_deps="libmfx"
2155 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2156 hevc_vdpau_hwaccel_select="hevc_decoder"
2157 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2158 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2159 mpeg1_vdpau_hwaccel_deps="vdpau"
2160 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2161 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2162 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2163 mpeg2_dxva2_hwaccel_deps="dxva2"
2164 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2165 mpeg2_mmal_decoder_deps="mmal"
2166 mpeg2_mmal_hwaccel_deps="mmal"
2167 mpeg2_qsv_hwaccel_deps="libmfx"
2168 mpeg2_vaapi_hwaccel_deps="vaapi"
2169 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2170 mpeg2_vdpau_hwaccel_deps="vdpau"
2171 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2172 mpeg4_omx_encoder_deps="omx"
2173 mpeg4_vaapi_hwaccel_deps="vaapi"
2174 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2175 mpeg4_vdpau_hwaccel_deps="vdpau"
2176 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2177 vc1_d3d11va_hwaccel_deps="d3d11va"
2178 vc1_d3d11va_hwaccel_select="vc1_decoder"
2179 vc1_dxva2_hwaccel_deps="dxva2"
2180 vc1_dxva2_hwaccel_select="vc1_decoder"
2181 vc1_mmal_decoder_deps="mmal"
2182 vc1_mmal_hwaccel_deps="mmal"
2183 vc1_qsv_hwaccel_deps="libmfx"
2184 vc1_vaapi_hwaccel_deps="vaapi"
2185 vc1_vaapi_hwaccel_select="vc1_decoder"
2186 vc1_vdpau_hwaccel_deps="vdpau"
2187 vc1_vdpau_hwaccel_select="vc1_decoder"
2188 vp8_qsv_hwaccel_deps="libmfx"
2189 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2190 vp8_vaapi_hwaccel_select="vp8_decoder"
2191 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2192 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2193 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2194 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2195
2196 # hardware-accelerated codecs
2197 nvenc_deps_any="dlopen LoadLibrary"
2198 nvenc_extralibs='$ldl'
2199 omx_deps="dlopen pthreads"
2200 omx_extralibs='$ldl'
2201 qsvdec_select="qsv"
2202 qsvenc_select="qsv"
2203 vaapi_encode_deps="vaapi"
2204
2205 hwupload_cuda_filter_deps="cuda"
2206 scale_npp_filter_deps="cuda libnpp"
2207
2208 h264_nvenc_encoder_deps="nvenc"
2209 h264_qsv_decoder_deps="libmfx"
2210 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2211 h264_qsv_encoder_deps="libmfx"
2212 h264_qsv_encoder_select="qsvenc"
2213 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2214 h264_vaapi_encoder_select="vaapi_encode golomb"
2215
2216 hevc_nvenc_encoder_deps="nvenc"
2217 hevc_qsv_decoder_deps="libmfx"
2218 hevc_qsv_encoder_deps="libmfx"
2219 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2220 hevc_qsv_encoder_select="qsvenc"
2221 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2222 hevc_vaapi_encoder_select="vaapi_encode golomb"
2223 mpeg2_qsv_decoder_deps="libmfx"
2224 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2225 mpeg2_qsv_encoder_deps="libmfx"
2226 mpeg2_qsv_encoder_select="qsvenc"
2227 vc1_qsv_decoder_deps="libmfx"
2228 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2229 vp8_qsv_decoder_deps="libmfx"
2230 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2231
2232 nvenc_h264_encoder_deps="nvenc"
2233 nvenc_hevc_encoder_deps="nvenc"
2234
2235 # parsers
2236 h264_parser_select="golomb h264dsp h264parse"
2237 hevc_parser_select="golomb"
2238 mpegvideo_parser_select="mpegvideo"
2239 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2240 vc1_parser_select="vc1dsp"
2241
2242 # bitstream_filters
2243 mjpeg2jpeg_bsf_select="jpegtables"
2244
2245 # external libraries
2246 libdcadec_decoder_deps="libdcadec"
2247 libfaac_encoder_deps="libfaac"
2248 libfaac_encoder_select="audio_frame_queue"
2249 libfdk_aac_decoder_deps="libfdk_aac"
2250 libfdk_aac_encoder_deps="libfdk_aac"
2251 libfdk_aac_encoder_select="audio_frame_queue"
2252 libgsm_decoder_deps="libgsm"
2253 libgsm_encoder_deps="libgsm"
2254 libgsm_ms_decoder_deps="libgsm"
2255 libgsm_ms_encoder_deps="libgsm"
2256 libilbc_decoder_deps="libilbc"
2257 libilbc_encoder_deps="libilbc"
2258 libkvazaar_encoder_deps="libkvazaar"
2259 libmp3lame_encoder_deps="libmp3lame"
2260 libmp3lame_encoder_select="audio_frame_queue"
2261 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2262 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2263 libopencore_amrnb_encoder_select="audio_frame_queue"
2264 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2265 libopenh264_decoder_deps="libopenh264"
2266 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2267 libopenh264_encoder_deps="libopenh264"
2268 libopenjpeg_decoder_deps="libopenjpeg"
2269 libopenjpeg_encoder_deps="libopenjpeg"
2270 libopus_decoder_deps="libopus"
2271 libopus_encoder_deps="libopus"
2272 libopus_encoder_select="audio_frame_queue"
2273 libschroedinger_decoder_deps="libschroedinger"
2274 libschroedinger_encoder_deps="libschroedinger"
2275 libspeex_decoder_deps="libspeex"
2276 libspeex_encoder_deps="libspeex"
2277 libspeex_encoder_select="audio_frame_queue"
2278 libtheora_encoder_deps="libtheora"
2279 libtwolame_encoder_deps="libtwolame"
2280 libvo_aacenc_encoder_deps="libvo_aacenc"
2281 libvo_aacenc_encoder_select="audio_frame_queue"
2282 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2283 libvorbis_encoder_deps="libvorbis"
2284 libvorbis_encoder_select="audio_frame_queue"
2285 libvpx_vp8_decoder_deps="libvpx"
2286 libvpx_vp8_encoder_deps="libvpx"
2287 libvpx_vp9_decoder_deps="libvpx"
2288 libvpx_vp9_encoder_deps="libvpx"
2289 libwavpack_encoder_deps="libwavpack"
2290 libwebp_encoder_deps="libwebp"
2291 libx262_encoder_deps="libx262"
2292 libx264_encoder_deps="libx264"
2293 libx265_encoder_deps="libx265"
2294 libxavs_encoder_deps="libxavs"
2295 libxvid_encoder_deps="libxvid mkstemp"
2296
2297 # demuxers / muxers
2298 ac3_demuxer_select="ac3_parser"
2299 asf_demuxer_select="riffdec"
2300 asf_muxer_select="riffenc"
2301 asf_stream_muxer_select="asf_muxer"
2302 avi_demuxer_select="iso_media riffdec"
2303 avi_muxer_select="riffenc"
2304 avisynth_demuxer_deps="avisynth"
2305 avisynth_demuxer_select="riffdec"
2306 caf_demuxer_select="iso_media riffdec"
2307 dash_muxer_select="mp4_muxer"
2308 dirac_demuxer_select="dirac_parser"
2309 dv_demuxer_select="dvprofile"
2310 dv_muxer_select="dvprofile"
2311 dxa_demuxer_select="riffdec"
2312 eac3_demuxer_select="ac3_parser"
2313 f4v_muxer_select="mov_muxer"
2314 flac_demuxer_select="flac_parser"
2315 hds_muxer_select="flv_muxer"
2316 hls_muxer_select="mpegts_muxer"
2317 ipod_muxer_select="mov_muxer"
2318 ismv_muxer_select="mov_muxer"
2319 matroska_audio_muxer_select="matroska_muxer"
2320 matroska_demuxer_select="iso_media riffdec"
2321 matroska_demuxer_suggest="bzlib lzo zlib"
2322 matroska_muxer_select="iso_media riffenc"
2323 mmf_muxer_select="riffenc"
2324 mov_demuxer_select="iso_media riffdec"
2325 mov_demuxer_suggest="zlib"
2326 mov_muxer_select="iso_media riffenc rtpenc_chain"
2327 mp3_demuxer_select="mpegaudio_parser"
2328 mp4_muxer_select="mov_muxer"
2329 mpegts_demuxer_select="iso_media"
2330 mpegts_muxer_select="adts_muxer latm_muxer"
2331 mpegtsraw_demuxer_select="mpegts_demuxer"
2332 mxf_d10_muxer_select="mxf_muxer"
2333 nut_muxer_select="riffenc"
2334 nuv_demuxer_select="riffdec"
2335 oga_muxer_select="ogg_muxer"
2336 ogg_demuxer_select="dirac_parse"
2337 opus_muxer_select="ogg_muxer"
2338 psp_muxer_select="mov_muxer"
2339 rtp_demuxer_select="sdp_demuxer"
2340 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2341 rtsp_demuxer_select="http_protocol rtpdec"
2342 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2343 sap_demuxer_select="sdp_demuxer"
2344 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2345 sdp_demuxer_select="rtpdec"
2346 smoothstreaming_muxer_select="ismv_muxer"
2347 spdif_muxer_select="aac_parser"
2348 spx_muxer_select="ogg_muxer"
2349 swf_demuxer_suggest="zlib"
2350 tak_demuxer_select="tak_parser"
2351 tg2_muxer_select="mov_muxer"
2352 tgp_muxer_select="mov_muxer"
2353 w64_demuxer_select="wav_demuxer"
2354 wav_demuxer_select="riffdec"
2355 wav_muxer_select="riffenc"
2356 webm_muxer_select="iso_media riffenc"
2357 webm_muxer_suggest="libopus_encoder libvorbis_encoder libvpx_vp8_encoder libvpx_vp9_encoder"
2358 wtv_demuxer_select="mpegts_demuxer riffdec"
2359 xmv_demuxer_select="riffdec"
2360 xwma_demuxer_select="riffdec"
2361
2362 # indevs / outdevs
2363 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2364 alsa_outdev_deps="alsa_asoundlib_h"
2365 avfoundation_indev_deps="AVFoundation_AVFoundation_h"
2366 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2367 dv1394_indev_deps="dv1394"
2368 dv1394_indev_select="dv_demuxer"
2369 fbdev_indev_deps="linux_fb_h"
2370 jack_indev_deps="jack_jack_h"
2371 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2372 libcdio_indev_deps="libcdio"
2373 libdc1394_indev_deps="libdc1394"
2374 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2375 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2376 pulse_indev_deps="libpulse"
2377 sndio_indev_deps="sndio_h"
2378 sndio_outdev_deps="sndio_h"
2379 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2380 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2381 vfwcap_indev_extralibs="-lavicap32"
2382 xcbgrab_indev_deps="libxcb"
2383
2384 # protocols
2385 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2386 ffrtmpcrypt_protocol_deps_any="gmp openssl"
2387 ffrtmpcrypt_protocol_select="tcp_protocol"
2388 ffrtmphttp_protocol_deps="!librtmp_protocol"
2389 ffrtmphttp_protocol_select="http_protocol"
2390 gopher_protocol_select="network"
2391 http_protocol_select="tcp_protocol"
2392 httpproxy_protocol_select="tcp_protocol"
2393 https_protocol_select="tls_protocol"
2394 icecast_protocol_select="http_protocol"
2395 librtmp_protocol_deps="librtmp"
2396 librtmpe_protocol_deps="librtmp"
2397 librtmps_protocol_deps="librtmp"
2398 librtmpt_protocol_deps="librtmp"
2399 librtmpte_protocol_deps="librtmp"
2400 mmsh_protocol_select="http_protocol"
2401 mmst_protocol_select="network"
2402 rtmp_protocol_deps="!librtmp_protocol"
2403 rtmp_protocol_select="tcp_protocol"
2404 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2405 rtmps_protocol_deps="!librtmp_protocol"
2406 rtmps_protocol_select="tls_protocol"
2407 rtmpt_protocol_select="ffrtmphttp_protocol"
2408 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2409 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2410 rtp_protocol_select="udp_protocol"
2411 sctp_protocol_deps="struct_sctp_event_subscribe"
2412 sctp_protocol_select="network"
2413 srtp_protocol_select="rtp_protocol srtp"
2414 tcp_protocol_select="network"
2415 tls_gnutls_protocol_deps="gnutls"
2416 tls_gnutls_protocol_select="tcp_protocol"
2417 tls_openssl_protocol_deps="openssl !tls_gnutls_protocol"
2418 tls_openssl_protocol_select="tcp_protocol"
2419 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2420 udp_protocol_select="network"
2421 unix_protocol_deps="sys_un_h"
2422 unix_protocol_select="network"
2423
2424 # filters
2425 asyncts_filter_deps="avresample"
2426 blackframe_filter_deps="gpl"
2427 boxblur_filter_deps="gpl"
2428 bs2b_filter_deps="libbs2b"
2429 cropdetect_filter_deps="gpl"
2430 deinterlace_qsv_filter_deps="libmfx"
2431 delogo_filter_deps="gpl"
2432 drawtext_filter_deps="libfreetype"
2433 frei0r_filter_deps="frei0r dlopen"
2434 frei0r_filter_extralibs='$ldl'
2435 frei0r_src_filter_deps="frei0r dlopen"
2436 frei0r_src_filter_extralibs='$ldl'
2437 hdcd_filter_deps="libhdcd"
2438 hqdn3d_filter_deps="gpl"
2439 interlace_filter_deps="gpl"
2440 movie_filter_deps="avcodec avformat"
2441 ocv_filter_deps="libopencv"
2442 resample_filter_deps="avresample"
2443 scale_filter_deps="swscale"
2444 scale_qsv_filter_deps="libmfx"
2445 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2446
2447 # examples
2448 decode_audio_example_deps="avcodec avutil"
2449 decode_video_example_deps="avcodec avutil"
2450 encode_audio_example_deps="avcodec avutil"
2451 encode_video_example_deps="avcodec avutil"
2452 filter_audio_example_deps="avfilter avutil"
2453 metadata_example_deps="avformat avutil"
2454 output_example_deps="avcodec avformat avresample avutil swscale"
2455 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
2456 transcode_aac_example_deps="avcodec avformat avresample"
2457
2458 # libraries, in linking order
2459 avcodec_deps="avutil"
2460 avdevice_deps="avformat avcodec avutil"
2461 avfilter_deps="avutil"
2462 avformat_deps="avcodec avutil"
2463 avresample_deps="avutil"
2464 swscale_deps="avutil"
2465
2466 # programs
2467 avconv_deps="avcodec avfilter avformat avresample swscale"
2468 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2469                fps_filter null_filter resample_filter scale_filter
2470                trim_filter"
2471 avplay_deps="avcodec avfilter avformat avresample sdl"
2472 avplay_libs='$sdl_libs'
2473 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2474 avprobe_deps="avcodec avformat"
2475
2476 # documentation
2477 pod2man_deps="doc"
2478 texi2html_deps="doc"
2479
2480 # default parameters
2481
2482 logfile="config.log"
2483
2484 # installation paths
2485 prefix_default="/usr/local"
2486 bindir_default='${prefix}/bin'
2487 datadir_default='${prefix}/share/avconv'
2488 docdir_default='${prefix}/share/doc/libav'
2489 incdir_default='${prefix}/include'
2490 libdir_default='${prefix}/lib'
2491 mandir_default='${prefix}/share/man'
2492 shlibdir_default="$libdir_default"
2493
2494 # toolchain
2495 ar_default="ar"
2496 cc_default="gcc"
2497 host_cc_default="gcc"
2498 cp_f="cp -f"
2499 ln_s="ln -s -f"
2500 nm_default="nm -g"
2501 objformat="elf"
2502 pkg_config_default=pkg-config
2503 ranlib="ranlib"
2504 strip="strip"
2505 version_script='--version-script'
2506 yasmexe="yasm"
2507
2508 # machine
2509 arch_default=$(uname -m)
2510 cpu="generic"
2511 intrinsics="none"
2512
2513 # OS
2514 target_os_default=$(tolower $(uname -s))
2515 host_os=$target_os_default
2516
2517 # configurable options
2518 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2519
2520 enable asm
2521 enable debug
2522 enable doc
2523 enable faan faandct faanidct
2524 enable optimizations
2525 enable safe_bitstream_reader
2526 enable static
2527 enable swscale_alpha
2528 enable valgrind_backtrace
2529
2530 # By default, enable only those hwaccels that have no external dependencies.
2531 enable d3d11va dxva2 vda vdpau
2532
2533 # build settings
2534 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2535 LIBPREF="lib"
2536 LIBSUF=".a"
2537 FULLNAME='$(NAME)$(BUILDSUF)'
2538 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2539 SLIBPREF="lib"
2540 SLIBSUF=".so"
2541 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2542 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2543 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2544 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2545 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2546 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2547 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2548
2549 asflags_filter=echo
2550 cflags_filter=echo
2551 ldflags_filter=echo
2552
2553 AS_C='-c'
2554 AS_O='-o $@'
2555 CC_C='-c'
2556 CC_E='-E -o $@'
2557 CC_O='-o $@'
2558 OBJCC_C='-c'
2559 OBJCC_E='-E -o $@'
2560 OBJCC_O='-o $@'
2561 LD_O='-o $@'
2562 LD_LIB='-l%'
2563 LD_PATH='-L'
2564 HOSTCC_C='-c'
2565 HOSTCC_E='-E -o $@'
2566 HOSTCC_O='-o $@'
2567 HOSTLD_O='-o $@'
2568
2569 host_libs='-lm'
2570 host_cflags_filter=echo
2571 host_ldflags_filter=echo
2572
2573 target_path='$(CURDIR)'
2574
2575 # since the object filename is not given with the -MM flag, the compiler
2576 # is only able to print the basename, and we must add the path ourselves
2577 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2578 DEPFLAGS='-MM'
2579
2580 # find source path
2581 if test -f configure; then
2582     source_path=.
2583 else
2584     source_path=$(cd $(dirname "$0"); pwd)
2585     echo "$source_path" | grep -q '[[:blank:]]' &&
2586         die "Out of tree builds are impossible with whitespace in source path."
2587     test -e "$source_path/config.h" &&
2588         die "Out of tree builds are impossible with config.h in source dir."
2589 fi
2590
2591 for v in "$@"; do
2592     r=${v#*=}
2593     l=${v%"$r"}
2594     r=$(sh_quote "$r")
2595     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2596 done
2597
2598 find_things(){
2599     thing=$1
2600     pattern=$2
2601     file=$source_path/$3
2602     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2603 }
2604
2605 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2606 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2607 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2608 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2609 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2610 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2611 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2612 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2613 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2614
2615 find_things_extern(){
2616     thing=$1
2617     pattern=$2
2618     file=$source_path/$3
2619     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2620 }
2621
2622 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2623 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2624
2625 ALL_COMPONENTS="
2626     $BSF_LIST
2627     $DECODER_LIST
2628     $DEMUXER_LIST
2629     $ENCODER_LIST
2630     $FILTER_LIST
2631     $HWACCEL_LIST
2632     $INDEV_LIST
2633     $MUXER_LIST
2634     $OUTDEV_LIST
2635     $PARSER_LIST
2636     $PROTOCOL_LIST
2637 "
2638
2639 for n in $COMPONENT_LIST; do
2640     v=$(toupper ${n%s})_LIST
2641     eval enable \$$v
2642     eval ${n}_if_any="\$$v"
2643 done
2644
2645 enable $ARCH_EXT_LIST
2646
2647 die_unknown(){
2648     echo "Unknown option \"$1\"."
2649     echo "See $0 --help for available options."
2650     exit 1
2651 }
2652
2653 print_3_columns() {
2654     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2655 }
2656
2657 show_list() {
2658     suffix=_$1
2659     shift
2660     echo $* | sed s/$suffix//g | print_3_columns
2661     exit 0
2662 }
2663
2664 rand_list(){
2665     IFS=', '
2666     set -- $*
2667     unset IFS
2668     for thing; do
2669         comp=${thing%:*}
2670         prob=${thing#$comp}
2671         prob=${prob#:}
2672         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2673         echo "prob ${prob:-0.5}"
2674         printf '%s\n' $comp
2675     done
2676 }
2677
2678 do_random(){
2679     action=$1
2680     shift
2681     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2682     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2683 }
2684
2685 for opt do
2686     optval="${opt#*=}"
2687     case "$opt" in
2688         --extra-ldflags=*)
2689             add_ldflags $optval
2690         ;;
2691         --extra-ldexeflags=*)
2692             add_ldexeflags $optval
2693         ;;
2694         --extra-libs=*)
2695             add_extralibs $optval
2696         ;;
2697         --disable-devices)
2698             disable $INDEV_LIST $OUTDEV_LIST
2699         ;;
2700         --enable-debug=*)
2701             debuglevel="$optval"
2702         ;;
2703         --disable-programs)
2704             disable $PROGRAM_LIST
2705         ;;
2706         --disable-everything)
2707             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2708         ;;
2709         --disable-all)
2710             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2711             disable $LIBRARY_LIST $PROGRAM_LIST doc
2712         ;;
2713         --enable-random|--disable-random)
2714             action=${opt%%-random}
2715             do_random ${action#--} $COMPONENT_LIST
2716         ;;
2717         --enable-random=*|--disable-random=*)
2718             action=${opt%%-random=*}
2719             do_random ${action#--} $optval
2720         ;;
2721         --enable-*=*|--disable-*=*)
2722             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2723             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2724             eval list=\$$(toupper $thing)_LIST
2725             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2726             $action $(filter "$name" $list)
2727         ;;
2728         --enable-avserver|--disable-avserver*)
2729             warn "avserver has been removed, the ${opt} option is only"\
2730                  "provided for compatibility and will be removed in the future"
2731         ;;
2732         --enable-?*|--disable-?*)
2733             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2734             if is_in $option $COMPONENT_LIST; then
2735                 test $action = disable && action=unset
2736                 eval $action \$$(toupper ${option%s})_LIST
2737             elif is_in $option $CMDLINE_SELECT; then
2738                 $action $option
2739             else
2740                 die_unknown $opt
2741             fi
2742         ;;
2743         --list-*)
2744             NAME="${opt#--list-}"
2745             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2746             NAME=${NAME%s}
2747             eval show_list $NAME \$$(toupper $NAME)_LIST
2748         ;;
2749         --help|-h) show_help
2750         ;;
2751         --quiet|-q) quiet=yes
2752         ;;
2753         *)
2754             optname="${opt%%=*}"
2755             optname="${optname#--}"
2756             optname=$(echo "$optname" | sed 's/-/_/g')
2757             if is_in $optname $CMDLINE_SET; then
2758                 eval $optname='$optval'
2759             elif is_in $optname $CMDLINE_APPEND; then
2760                 append $optname "$optval"
2761             else
2762                 die_unknown $opt
2763             fi
2764         ;;
2765     esac
2766 done
2767
2768 for e in $env; do
2769     eval "export $e"
2770 done
2771
2772 disabled logging && logfile=/dev/null
2773
2774 # Die early if licensing-related configure options are incompatible.
2775 die_license_disabled() {
2776     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2777 }
2778
2779 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
2780 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2781 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2782
2783 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2784
2785 # Disable all the library-specific components if the library itself
2786 # is disabled, see AVCODEC_LIST and following _LIST variables.
2787
2788 disable_components(){
2789     disabled ${1} && disable $(
2790         eval components="\$$(toupper ${1})_COMPONENTS"
2791         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2792     )
2793 }
2794
2795 map 'disable_components $v' $LIBRARY_LIST
2796
2797 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2798 set >> $logfile
2799
2800 case "$toolchain" in
2801     *-asan)
2802         cc_default="${toolchain%-asan}"
2803         add_cflags  -fsanitize=address
2804         add_ldflags -fsanitize=address
2805     ;;
2806     *-msan)
2807         cc_default="${toolchain%-msan}"
2808         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2809         add_ldflags -fsanitize=memory
2810     ;;
2811     *-tsan)
2812         cc_default="${toolchain%-tsan}"
2813         add_cflags  -fsanitize=thread -pie
2814         add_ldflags -fsanitize=thread -pie
2815         case "$toolchain" in
2816             gcc-tsan)
2817                 add_cflags  -fPIC
2818                 add_ldflags -fPIC
2819                 ;;
2820         esac
2821     ;;
2822     *-usan)
2823         cc_default="${toolchain%-usan}"
2824         add_cflags  -fsanitize=undefined
2825         add_ldflags -fsanitize=undefined
2826         case "$toolchain" in
2827             clang-usan)
2828                 add_cflags -O1
2829                 ;;
2830         esac
2831     ;;
2832     valgrind-*)
2833         target_exec_default="valgrind"
2834         case "$toolchain" in
2835             valgrind-massif)
2836                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2837                 ;;
2838             valgrind-memcheck)
2839                 target_exec_args="--track-origins=yes --leak-check=full"
2840                 ;;
2841         esac
2842     ;;
2843     msvc)
2844         # Check whether the current MSVC version needs the C99 converter.
2845         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2846         # support enough of C99 to build libav. Default to the new
2847         # behaviour if the regexp was unable to match anything, since this
2848         # successfully parses the version number of existing supported
2849         # versions that require the converter (MSVC 2010 and 2012).
2850         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2851         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2852             cc_default="cl"
2853         else
2854             cc_default="c99wrap cl"
2855         fi
2856         ld_default="$source_path/compat/windows/mslink"
2857         nm_default="dumpbin -symbols"
2858         ar_default="lib"
2859         case "$arch" in
2860         arm*)
2861             as_default="armasm"
2862             ;;
2863         esac
2864         target_os_default="win32"
2865         # Use a relative path for TMPDIR. This makes sure all the
2866         # ffconf temp files are written with a relative path, avoiding
2867         # issues with msys/win32 path conversion for MSVC parameters
2868         # such as -Fo<file> or -out:<file>.
2869         TMPDIR=.
2870     ;;
2871     icl)
2872         cc_default="icl"
2873         ld_default="xilink"
2874         nm_default="dumpbin -symbols"
2875         ar_default="xilib"
2876         target_os_default="win32"
2877         TMPDIR=.
2878     ;;
2879     gcov)
2880         add_cflags  -fprofile-arcs -ftest-coverage
2881         add_ldflags -fprofile-arcs -ftest-coverage
2882     ;;
2883     llvm-cov)
2884         add_cflags -fprofile-arcs -ftest-coverage
2885         add_ldflags --coverage
2886     ;;
2887     hardened)
2888         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2889         add_cflags   -fno-strict-overflow -fstack-protector-all
2890         add_ldflags  -Wl,-z,relro -Wl,-z,now
2891     ;;
2892     ?*)
2893         die "Unknown toolchain $toolchain"
2894     ;;
2895 esac
2896
2897 test -n "$cross_prefix" && enable cross_compile
2898
2899 if enabled cross_compile; then
2900     test -n "$arch" && test -n "$target_os" ||
2901         die "Must specify target arch and OS when cross-compiling"
2902 fi
2903
2904 ar_default="${cross_prefix}${ar_default}"
2905 cc_default="${cross_prefix}${cc_default}"
2906 occ_default="${cross_prefix}${occ_default}"
2907 nm_default="${cross_prefix}${nm_default}"
2908 pkg_config_default="${cross_prefix}${pkg_config_default}"
2909 ranlib="${cross_prefix}${ranlib}"
2910 strip="${cross_prefix}${strip}"
2911
2912 sysinclude_default="${sysroot}/usr/include"
2913
2914 set_default arch cc pkg_config sysinclude target_exec target_os
2915 enabled cross_compile || host_cc_default=$cc
2916 set_default host_cc
2917
2918 if ! $pkg_config --version >/dev/null 2>&1; then
2919     warn "$pkg_config not found, library detection may fail."
2920     pkg_config=false
2921 fi
2922
2923 exesuf() {
2924     case $1 in
2925         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2926     esac
2927 }
2928
2929 EXESUF=$(exesuf $target_os)
2930 HOSTEXESUF=$(exesuf $host_os)
2931
2932 # set temporary file name
2933 : ${TMPDIR:=$TEMPDIR}
2934 : ${TMPDIR:=$TMP}
2935 : ${TMPDIR:=/tmp}
2936
2937 if ! check_cmd mktemp -u XXXXXX; then
2938     # simple replacement for missing mktemp
2939     # NOT SAFE FOR GENERAL USE
2940     mktemp(){
2941         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2942     }
2943 fi
2944
2945 tmpfile(){
2946     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2947         (set -C; exec > $tmp) 2>/dev/null ||
2948         die "Unable to create temporary file in $TMPDIR."
2949     append TMPFILES $tmp
2950     eval $1=$tmp
2951 }
2952
2953 trap 'rm -f -- $TMPFILES' EXIT
2954
2955 tmpfile TMPASM .asm
2956 tmpfile TMPC   .c
2957 tmpfile TMPE   $EXESUF
2958 tmpfile TMPH   .h
2959 tmpfile TMPO   .o
2960 tmpfile TMPS   .S
2961 tmpfile TMPSH  .sh
2962 tmpfile TMPV   .ver
2963
2964 unset -f mktemp
2965
2966 chmod +x $TMPE
2967
2968 # make sure we can execute files in $TMPDIR
2969 cat > $TMPSH 2>> $logfile <<EOF
2970 #! /bin/sh
2971 EOF
2972 chmod +x $TMPSH >> $logfile 2>&1
2973 if ! $TMPSH >> $logfile 2>&1; then
2974     cat <<EOF
2975 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2976 variable to another directory and make sure that it is not mounted noexec.
2977 EOF
2978     die "Sanity test failed."
2979 fi
2980
2981 armasm_flags(){
2982     for flag; do
2983         case $flag in
2984             # Filter out MSVC cl.exe options from cflags that shouldn't
2985             # be passed to gas-preprocessor
2986             -M[TD]*)                                            ;;
2987             *)                  echo $flag                      ;;
2988         esac
2989    done
2990 }
2991
2992 ccc_flags(){
2993     for flag; do
2994         case $flag in
2995             -std=c99)           echo -c99                       ;;
2996             -mcpu=*)            echo -arch ${flag#*=}           ;;
2997             -mieee)             echo -ieee                      ;;
2998             -O*|-fast)          echo $flag                      ;;
2999             -fno-math-errno)    echo -assume nomath_errno       ;;
3000             -g)                 echo -g3                        ;;
3001             -Wall)              echo -msg_enable level2         ;;
3002             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3003             -Wl,*)              echo $flag                      ;;
3004             -f*|-W*)                                            ;;
3005             *)                  echo $flag                      ;;
3006         esac
3007    done
3008 }
3009
3010 cparser_flags(){
3011     for flag; do
3012         case $flag in
3013             -Wno-switch)             echo -Wno-switch-enum ;;
3014             -Wno-format-zero-length) ;;
3015             -Wdisabled-optimization) ;;
3016             -Wno-pointer-sign)       echo -Wno-other ;;
3017             *)                       echo $flag ;;
3018         esac
3019     done
3020 }
3021
3022 msvc_common_flags(){
3023     for flag; do
3024         case $flag in
3025             # In addition to specifying certain flags under the compiler
3026             # specific filters, they must be specified here as well or else the
3027             # generic catch all at the bottom will print the original flag.
3028             -Wall)                ;;
3029             -std=c99)             ;;
3030             # Common flags
3031             -fomit-frame-pointer) ;;
3032             -g)                   echo -Z7 ;;
3033             -fno-math-errno)      ;;
3034             -fno-common)          ;;
3035             -fno-signed-zeros)    ;;
3036             -fPIC)                ;;
3037             -mthumb)              ;;
3038             -march=*)             ;;
3039             -lz)                  echo zlib.lib ;;
3040             -lavicap32)           echo vfw32.lib user32.lib ;;
3041             -lx264)               echo libx264.lib ;;
3042             -l*)                  echo ${flag#-l}.lib ;;
3043             -L*)                  echo -libpath:${flag#-L} ;;
3044             *)                    echo $flag ;;
3045         esac
3046     done
3047 }
3048
3049 msvc_flags(){
3050     msvc_common_flags "$@"
3051     for flag; do
3052         case $flag in
3053             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3054                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3055                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3056                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3057         esac
3058     done
3059 }
3060
3061 icl_flags(){
3062     msvc_common_flags "$@"
3063     for flag; do
3064         case $flag in
3065             # Despite what Intel's documentation says -Wall, which is supported
3066             # on Windows, does enable remarks so disable them here.
3067             -Wall)                echo $flag -Qdiag-disable:remark ;;
3068             -std=c99)             echo -Qstd=c99 ;;
3069         esac
3070     done
3071 }
3072
3073 pgi_flags(){
3074     for flag; do
3075         case $flag in
3076             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3077             -fomit-frame-pointer) echo -Mnoframe ;;
3078             -g)                   echo -gopt ;;
3079             *)                    echo $flag ;;
3080         esac
3081     done
3082 }
3083
3084 suncc_flags(){
3085     for flag; do
3086         case $flag in
3087             -march=*|-mcpu=*)
3088                 case "${flag#*=}" in
3089                     native)                   echo -xtarget=native       ;;
3090                     v9|niagara)               echo -xarch=sparc          ;;
3091                     ultrasparc)               echo -xarch=sparcvis       ;;
3092                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3093                     i586|pentium)             echo -xchip=pentium        ;;
3094                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3095                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3096                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3097                     pentium4*)          echo -xtarget=pentium4           ;;
3098                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3099                     *-sse3)             echo -xarch=sse3                 ;;
3100                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3101                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3102                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3103                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3104                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3105                     k8|opteron|athlon64|athlon-fx)
3106                                                echo -xarch=sse2a         ;;
3107                     athlon*)                   echo -xarch=pentium_proa  ;;
3108                 esac
3109                 ;;
3110             -std=c99)             echo -xc99              ;;
3111             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3112             -fPIC)                echo -KPIC -xcode=pic32 ;;
3113             -W*,*)                echo $flag              ;;
3114             -f*-*|-W*|-mimpure-text)                      ;;
3115             -shared)              echo -G                 ;;
3116             *)                    echo $flag              ;;
3117         esac
3118     done
3119 }
3120
3121 tms470_flags(){
3122     for flag; do
3123         case $flag in
3124             -march=*|-mcpu=*)
3125                 case "${flag#*=}" in
3126                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3127                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3128                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3129                     armv6*|arm11*)          echo -mv=6   ;;
3130                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3131                                             echo -mv=5e  ;;
3132                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3133                 esac
3134                 ;;
3135             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3136             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3137             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3138             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3139             -msoft-float)   echo --float_support=vfplib       ;;
3140             -O[0-3]|-mf=*)  echo $flag                        ;;
3141             -g)             echo -g -mn                       ;;
3142             -pds=*)         echo $flag                        ;;
3143             -D*|-I*)        echo $flag                        ;;
3144             --gcc|--abi=*)  echo $flag                        ;;
3145             -me)            echo $flag                        ;;
3146         esac
3147     done
3148 }
3149
3150 probe_cc(){
3151     pfx=$1
3152     _cc=$2
3153
3154     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3155     unset _ld_o _ldflags _ld_lib _ld_path
3156     unset _depflags _DEPCMD _DEPFLAGS
3157     _flags_filter=echo
3158
3159     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3160         _type=llvm_gcc
3161         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3162         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3163         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3164         _cflags_speed='-O3'
3165         _cflags_size='-Os'
3166     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3167         _type=gcc
3168         gcc_version=$($_cc --version | head -n1)
3169         gcc_basever=$($_cc -dumpversion)
3170         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3171         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3172         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3173         if ! $_cc -dumpversion | grep -q '^2\.'; then
3174             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3175         fi
3176         _cflags_speed='-O3'
3177         _cflags_size='-Os'
3178     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3179         _type=icc
3180         _ident=$($_cc --version | head -n1)
3181         _depflags='-MMD'
3182         _cflags_speed='-O3'
3183         _cflags_size='-Os'
3184         _cflags_noopt='-O1'
3185     elif $_cc -v 2>&1 | grep -q xlc; then
3186         _type=xlc
3187         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3188         _cflags_speed='-O5'
3189         _cflags_size='-O5 -qcompact'
3190     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3191         _type=ccc
3192         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3193         _DEPFLAGS='-M'
3194         _cflags_speed='-fast'
3195         _cflags_size='-O1'
3196         _flags_filter=ccc_flags
3197     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3198         test -d "$sysroot" || die "No valid sysroot specified."
3199         _type=armcc
3200         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3201         armcc_conf="$PWD/armcc.conf"
3202         $_cc --arm_linux_configure                 \
3203              --arm_linux_config_file="$armcc_conf" \
3204              --configure_sysroot="$sysroot"        \
3205              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3206              die "Error creating armcc configuration file."
3207         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3208         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3209         as_default="${cross_prefix}gcc"
3210         _depflags='-MMD'
3211         _cflags_speed='-O3'
3212         _cflags_size='-Os'
3213     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3214         _type=tms470
3215         _ident=$($_cc -version | head -n1 | tr -s ' ')
3216         _flags='--gcc --abi=eabi -me'
3217         _cc_e='-ppl -fe=$@'
3218         _cc_o='-fe=$@'
3219         _depflags='-ppa -ppd=$(@:.o=.d)'
3220         _cflags_speed='-O3 -mf=5'
3221         _cflags_size='-O3 -mf=2'
3222         _flags_filter=tms470_flags
3223     elif $_cc -v 2>&1 | grep -q clang; then
3224         _type=clang
3225         _ident=$($_cc --version 2>/dev/null | head -n1)
3226         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3227         _cflags_speed='-O3'
3228         _cflags_size='-Os'
3229     elif $_cc -V 2>&1 | grep -q Sun; then
3230         _type=suncc
3231         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3232         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3233         _DEPFLAGS='-xM1 -xc99'
3234         _ldflags='-std=c99'
3235         _cflags_speed='-O5'
3236         _cflags_size='-O5 -xspace'
3237         _flags_filter=suncc_flags
3238     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3239         _type=pathscale
3240         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3241         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3242         _cflags_speed='-O2'
3243         _cflags_size='-Os'
3244         _flags_filter='filter_out -Wdisabled-optimization'
3245     elif $_cc -v 2>&1 | grep -q Open64; then
3246         _type=open64
3247         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3248         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3249         _cflags_speed='-O2'
3250         _cflags_size='-Os'
3251         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3252     elif $_cc -V 2>&1 | grep -q Portland; then
3253         _type=pgi
3254         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3255         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3256         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3257         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3258         _cflags_noopt="-O1"
3259         _flags_filter=pgi_flags
3260     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3261         _type=armasm
3262         _ident=$($_cc | head -n1)
3263         # 4509: "This form of conditional instruction is deprecated"
3264         _flags="-nologo -ignore 4509"
3265         _flags_filter=armasm_flags
3266     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3267         _type=msvc
3268         _ident=$($_cc 2>&1 | head -n1)
3269         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3270         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3271         _cflags_speed="-O2"
3272         _cflags_size="-O1"
3273         if $_cc -nologo- 2>&1 | grep -q Linker; then
3274             _ld_o='-out:$@'
3275         else
3276             _ld_o='-Fe$@'
3277         fi
3278         _cc_o='-Fo$@'
3279         _cc_e='-P -Fi$@'
3280         _flags_filter=msvc_flags
3281         _ld_lib='lib%.a'
3282         _ld_path='-libpath:'
3283         _flags='-nologo'
3284     elif $_cc 2>&1 | grep -q Intel; then
3285         _type=icl
3286         _ident=$($_cc 2>&1 | head -n1)
3287         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3288         # Not only is O3 broken on 13.x+ but it is slower on all previous
3289         # versions (tested) as well.
3290         _cflags_speed="-O2"
3291         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3292         if $_cc 2>&1 | grep -q Linker; then
3293             _ld_o='-out:$@'
3294         else
3295             _ld_o='-Fe$@'
3296         fi
3297         _cc_o='-Fo$@'
3298         _cc_e='-P'
3299         _flags_filter=icl_flags
3300         _ld_lib='lib%.a'
3301         _ld_path='-libpath:'
3302         # -Qdiag-error to make icl error when seeing certain unknown arguments
3303         _flags='-nologo -Qdiag-error:4044,10157'
3304         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3305         # with MSVC which enables it by default.
3306         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3307     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3308         # lld can emulate multiple different linkers; in ms link.exe mode,
3309         # the -? parameter gives the help output which contains an identifyable
3310         # string, while it gives an error in other modes.
3311         _type=lld-link
3312         # The link.exe mode doesn't have a switch for getting the version,
3313         # but we can force it back to gnu mode and get the version from there.
3314         _ident=$($_cc -flavor gnu --version 2>/dev/null)
3315         _ld_o='-out:$@'
3316         _flags_filter=msvc_flags
3317         _ld_lib='lib%.a'
3318         _ld_path='-libpath:'
3319     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3320         _type=cparser
3321         _ident=$($_cc --version | head -n1)
3322         _depflags='-MMD'
3323         _cflags_speed='-O4'
3324         _cflags_size='-O2'
3325         _flags_filter=cparser_flags
3326     fi
3327
3328     eval ${pfx}_type=\$_type
3329     eval ${pfx}_ident=\$_ident
3330 }
3331
3332 set_ccvars(){
3333     eval ${1}_C=\${_cc_c-\${${1}_C}}
3334     eval ${1}_E=\${_cc_e-\${${1}_E}}
3335     eval ${1}_O=\${_cc_o-\${${1}_O}}
3336
3337     if [ -n "$_depflags" ]; then
3338         eval ${1}_DEPFLAGS=\$_depflags
3339     else
3340         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3341         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3342         eval DEP${1}FLAGS=\$_flags
3343     fi
3344 }
3345
3346 probe_cc cc "$cc"
3347 cflags_filter=$_flags_filter
3348 cflags_speed=$_cflags_speed
3349 cflags_size=$_cflags_size
3350 cflags_noopt=$_cflags_noopt
3351 add_cflags $_flags $_cflags
3352 cc_ldflags=$_ldflags
3353 set_ccvars CC
3354
3355 probe_cc hostcc "$host_cc"
3356 host_cflags_filter=$_flags_filter
3357 add_host_cflags  $_flags $_cflags
3358 set_ccvars HOSTCC
3359
3360 test -n "$cc_type" && enable $cc_type ||
3361     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3362
3363 : ${as_default:=$cc}
3364 : ${objcc_default:=$cc}
3365 : ${dep_cc_default:=$cc}
3366 : ${ld_default:=$cc}
3367 : ${host_ld_default:=$host_cc}
3368 set_default ar as objcc dep_cc ld host_ld
3369
3370 probe_cc as "$as"
3371 asflags_filter=$_flags_filter
3372 add_asflags $_flags $_cflags
3373 set_ccvars AS
3374
3375 probe_cc objcc "$objcc"
3376 objcflags_filter=$_flags_filter
3377 add_objcflags $_flags $_cflags
3378 set_ccvars OBJC
3379
3380 probe_cc ld "$ld"
3381 ldflags_filter=$_flags_filter
3382 add_ldflags $_flags $_ldflags
3383 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3384 LD_O=${_ld_o-$LD_O}
3385 LD_LIB=${_ld_lib-$LD_LIB}
3386 LD_PATH=${_ld_path-$LD_PATH}
3387
3388 probe_cc hostld "$host_ld"
3389 host_ldflags_filter=$_flags_filter
3390 add_host_ldflags $_flags $_ldflags
3391 HOSTLD_O=${_ld_o-$HOSTLD_O}
3392
3393 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3394     probe_cc depcc "$dep_cc"
3395     CCDEP=${_DEPCMD:-$DEPCMD}
3396     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3397     DEPCCFLAGS=$_flags
3398 fi
3399
3400 if $ar 2>&1 | grep -q Microsoft; then
3401     arflags="-nologo"
3402     ar_o='-out:$@'
3403 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3404     arflags="rq"
3405     ar_o='$@'
3406 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3407     arflags='-Xany -r -c'
3408     ar_o='$@'
3409 else
3410     arflags="rc"
3411     ar_o='$@'
3412 fi
3413
3414 add_cflags $extra_cflags
3415 add_objcflags $extra_objcflags
3416 add_asflags $extra_cflags
3417
3418 if test -n "$sysroot"; then
3419     case "$cc_type" in
3420         gcc|llvm_gcc|clang)
3421             add_cppflags --sysroot="$sysroot"
3422             add_ldflags --sysroot="$sysroot"
3423         ;;
3424         tms470)
3425             add_cppflags -I"$sysinclude"
3426             add_ldflags  --sysroot="$sysroot"
3427         ;;
3428     esac
3429 fi
3430
3431 if test "$cpu" = host; then
3432     enabled cross_compile &&
3433         die "--cpu=host makes no sense when cross-compiling."
3434
3435     case "$cc_type" in
3436         gcc|llvm_gcc)
3437             check_native(){
3438                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3439                 sed -n "/cc1.*$1=/{
3440                             s/.*$1=\\([^ ]*\\).*/\\1/
3441                             p
3442                             q
3443                         }" $TMPE
3444             }
3445             cpu=$(check_native -march || check_native -mcpu)
3446         ;;
3447     esac
3448
3449     test "${cpu:-host}" = host &&
3450         die "--cpu=host not supported with compiler $cc"
3451 fi
3452
3453 # Deal with common $arch aliases
3454 case "$arch" in
3455     aarch64|arm64)
3456         arch="aarch64"
3457     ;;
3458     arm*)
3459         arch="arm"
3460     ;;
3461     mips*|IP*)
3462         case "$arch" in
3463         *el)
3464             add_cppflags -EL
3465             add_ldflags -EL
3466         ;;
3467         *eb)
3468             add_cppflags -EB
3469             add_ldflags -EB
3470         ;;
3471         esac
3472         arch="mips"
3473     ;;
3474     parisc*|hppa*)
3475         arch="parisc"
3476     ;;
3477     "Power Macintosh"|ppc*|powerpc*)
3478         arch="ppc"
3479     ;;
3480     s390|s390x)
3481         arch="s390"
3482     ;;
3483     sh4|sh)
3484         arch="sh4"
3485     ;;
3486     sun4u|sparc*)
3487         arch="sparc"
3488     ;;
3489     tilegx|tile-gx)
3490         arch="tilegx"
3491     ;;
3492     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3493         arch="x86"
3494     ;;
3495 esac
3496
3497 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3498 enable $arch
3499
3500 # Add processor-specific flags
3501 if enabled aarch64; then
3502
3503     case $cpu in
3504         armv*)
3505             cpuflags="-march=$cpu"
3506         ;;
3507         *)
3508             cpuflags="-mcpu=$cpu"
3509         ;;
3510     esac
3511
3512 elif enabled alpha; then
3513
3514     cpuflags="-mcpu=$cpu"
3515
3516 elif enabled arm; then
3517
3518     check_arm_arch() {
3519         check_cpp_condition stddef.h \
3520             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3521             $cpuflags
3522     }
3523
3524     probe_arm_arch() {
3525         if   check_arm_arch 4;        then echo armv4
3526         elif check_arm_arch 4T;       then echo armv4t
3527         elif check_arm_arch 5;        then echo armv5
3528         elif check_arm_arch 5E;       then echo armv5e
3529         elif check_arm_arch 5T;       then echo armv5t
3530         elif check_arm_arch 5TE;      then echo armv5te
3531         elif check_arm_arch 5TEJ;     then echo armv5te
3532         elif check_arm_arch 6;        then echo armv6
3533         elif check_arm_arch 6J;       then echo armv6j
3534         elif check_arm_arch 6K;       then echo armv6k
3535         elif check_arm_arch 6Z;       then echo armv6z
3536         elif check_arm_arch 6ZK;      then echo armv6zk
3537         elif check_arm_arch 6T2;      then echo armv6t2
3538         elif check_arm_arch 7;        then echo armv7
3539         elif check_arm_arch 7A  7_A;  then echo armv7-a
3540         elif check_arm_arch 7S;       then echo armv7-a
3541         elif check_arm_arch 7R  7_R;  then echo armv7-r
3542         elif check_arm_arch 7M  7_M;  then echo armv7-m
3543         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3544         elif check_arm_arch 8A  8_A;  then echo armv8-a
3545         fi
3546     }
3547
3548     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3549
3550     case $cpu in
3551         armv*)
3552             cpuflags="-march=$cpu"
3553             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3554         ;;
3555         *)
3556             cpuflags="-mcpu=$cpu"
3557             case $cpu in
3558                 cortex-a*)                               subarch=armv7a  ;;
3559                 cortex-r*)                               subarch=armv7r  ;;
3560                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3561                 arm11*)                                  subarch=armv6   ;;
3562                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3563                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3564                 *)                             subarch=$(probe_arm_arch) ;;
3565             esac
3566         ;;
3567     esac
3568
3569     case "$subarch" in
3570         armv5t*)    enable fast_clz                ;;
3571         armv[6-8]*) enable fast_clz fast_unaligned ;;
3572     esac
3573
3574 elif enabled avr32; then
3575
3576     case $cpu in
3577         ap7[02]0[0-2])
3578             subarch="avr32_ap"
3579             cpuflags="-mpart=$cpu"
3580         ;;
3581         ap)
3582             subarch="avr32_ap"
3583             cpuflags="-march=$cpu"
3584         ;;
3585         uc3[ab]*)
3586             subarch="avr32_uc"
3587             cpuflags="-mcpu=$cpu"
3588         ;;
3589         uc)
3590             subarch="avr32_uc"
3591             cpuflags="-march=$cpu"
3592         ;;
3593     esac
3594
3595 elif enabled bfin; then
3596
3597     cpuflags="-mcpu=$cpu"
3598
3599 elif enabled mips; then
3600
3601     cpuflags="-march=$cpu"
3602
3603 elif enabled ppc; then
3604
3605     disable ldbrx
3606
3607     case $(tolower $cpu) in
3608         601|ppc601|powerpc601)
3609             cpuflags="-mcpu=601"
3610             disable altivec
3611         ;;
3612         603*|ppc603*|powerpc603*)
3613             cpuflags="-mcpu=603"
3614             disable altivec
3615         ;;
3616         604*|ppc604*|powerpc604*)
3617             cpuflags="-mcpu=604"
3618             disable altivec
3619         ;;
3620         g3|75*|ppc75*|powerpc75*)
3621             cpuflags="-mcpu=750"
3622             disable altivec
3623         ;;
3624         g4|745*|ppc745*|powerpc745*)
3625             cpuflags="-mcpu=7450"
3626             disable vsx
3627         ;;
3628         74*|ppc74*|powerpc74*)
3629             cpuflags="-mcpu=7400"
3630             disable vsx
3631         ;;
3632         g5|970|ppc970|powerpc970)
3633             cpuflags="-mcpu=970"
3634             disable vsx
3635         ;;
3636         power[3-6]*)
3637             cpuflags="-mcpu=$cpu"
3638             disable vsx
3639         ;;
3640         power[7-8]*)
3641             cpuflags="-mcpu=$cpu"
3642             enable ldbrx
3643         ;;
3644         cell)
3645             cpuflags="-mcpu=cell"
3646             enable ldbrx
3647             disable vsx
3648         ;;
3649         e500mc)
3650             cpuflags="-mcpu=e500mc"
3651             disable altivec
3652         ;;
3653         e500v2)
3654             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3655             disable altivec
3656             disable dcbzl
3657         ;;
3658         e500)
3659             cpuflags="-mcpu=8540 -mhard-float"
3660             disable altivec
3661             disable dcbzl
3662         ;;
3663     esac
3664
3665 elif enabled sparc; then
3666
3667     case $cpu in
3668         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3669             cpuflags="-mcpu=$cpu"
3670         ;;
3671         ultrasparc*|niagara[234])
3672             cpuflags="-mcpu=$cpu"
3673         ;;
3674     esac
3675
3676 elif enabled x86; then
3677
3678     case $cpu in
3679         i[345]86|pentium)
3680             cpuflags="-march=$cpu"
3681             disable i686
3682             disable mmx
3683         ;;
3684         # targets that do NOT support nopl and conditional mov (cmov)
3685         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3686             cpuflags="-march=$cpu"
3687             disable i686
3688         ;;
3689         # targets that do support nopl and conditional mov (cmov)
3690         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3691             cpuflags="-march=$cpu"
3692             enable i686
3693             enable fast_cmov
3694         ;;
3695         # targets that do support conditional mov but on which it's slow
3696         pentium4|pentium4m|prescott|nocona)
3697             cpuflags="-march=$cpu"
3698             enable i686
3699             disable fast_cmov
3700         ;;
3701     esac
3702
3703 fi
3704
3705 if [ "$cpu" != generic ]; then
3706     add_cflags  $cpuflags
3707     add_asflags $cpuflags
3708     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3709 fi
3710
3711 # compiler sanity check
3712 check_exec <<EOF
3713 int main(void){ return 0; }
3714 EOF
3715 if test "$?" != 0; then
3716     echo "$cc is unable to create an executable file."
3717     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3718         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3719         echo "Only do this if you know what cross compiling means."
3720     fi
3721     die "C compiler test failed."
3722 fi
3723
3724 add_cppflags -D_ISOC99_SOURCE
3725
3726 # some compilers silently accept -std=c11, so we also need to check that the
3727 # version macro is defined properly
3728 if test_cflags_cpp -std=c11 "__STDC_VERSION__ >= 201112L"; then
3729     add_cflags -std=c11
3730 else
3731     check_cflags -std=c99
3732 fi
3733
3734 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3735 #include <stdlib.h>
3736 EOF
3737 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3738 #include <stdlib.h>
3739 EOF
3740
3741 add_host_cppflags -D_ISOC99_SOURCE
3742 check_host_cflags -std=c99
3743 check_host_cflags -Wall
3744 check_host_cflags -O3
3745
3746 check_64bit(){
3747     arch32=$1
3748     arch64=$2
3749     expr=$3
3750     check_code cc "" "int test[2*($expr) - 1]" &&
3751         subarch=$arch64 || subarch=$arch32
3752 }
3753
3754 case "$arch" in
3755     aarch64|alpha|ia64)
3756         spic=$shared
3757     ;;
3758     mips)
3759         check_64bit mips mips64 '_MIPS_SIM > 1'
3760         spic=$shared
3761     ;;
3762     parisc)
3763         check_64bit parisc parisc64 'sizeof(void *) > 4'
3764         spic=$shared
3765     ;;
3766     ppc)
3767         check_64bit ppc ppc64 'sizeof(void *) > 4'
3768         spic=$shared
3769     ;;
3770     s390)
3771         check_64bit s390 s390x 'sizeof(void *) > 4'
3772         spic=$shared
3773     ;;
3774     sparc)
3775         check_64bit sparc sparc64 'sizeof(void *) > 4'
3776         spic=$shared
3777     ;;
3778     x86)
3779         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3780         if test "$subarch" = "x86_64"; then
3781             spic=$shared
3782         fi
3783     ;;
3784 esac
3785
3786 enable $subarch
3787 enabled spic && enable_weak pic
3788
3789 # OS specific
3790 case $target_os in
3791     aix)
3792         SHFLAGS=-shared
3793         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3794         enabled shared && add_ldflags -Wl,-brtl
3795         ;;
3796     android)
3797         disable symver
3798         enable section_data_rel_ro
3799         SLIB_INSTALL_NAME='$(SLIBNAME)'
3800         SLIB_INSTALL_LINKS=
3801         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3802         ;;
3803     haiku)
3804         prefix_default="/boot/common"
3805         network_extralibs="-lnetwork"
3806         host_libs=
3807         ;;
3808     sunos)
3809         SHFLAGS='-shared -Wl,-h,$$(@F)'
3810         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3811         network_extralibs="-lsocket -lnsl"
3812         # When using suncc to build, the Solaris linker will mark
3813         # an executable with each instruction set encountered by
3814         # the Solaris assembler.  As our libraries contain their own
3815         # guards for processor-specific code, instead suppress
3816         # generation of the HWCAPS ELF section on Solaris x86 only.
3817         enabled_all suncc x86 &&
3818             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3819             add_ldflags -Wl,-M,mapfile
3820         nm_default='nm -P -g'
3821         version_script='-M'
3822         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3823         ;;
3824     netbsd)
3825         disable symver
3826         oss_indev_extralibs="-lossaudio"
3827         oss_outdev_extralibs="-lossaudio"
3828         ;;
3829     openbsd|bitrig)
3830         disable symver
3831         SHFLAGS='-shared'
3832         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3833         SLIB_INSTALL_LINKS=
3834         oss_indev_extralibs="-lossaudio"
3835         oss_outdev_extralibs="-lossaudio"
3836         ;;
3837     dragonfly)
3838         disable symver
3839         ;;
3840     freebsd)
3841         ;;
3842     bsd/os)
3843         add_extralibs -lpoll -lgnugetopt
3844         ;;
3845     darwin)
3846         enabled ppc && add_asflags -force_cpusubtype_ALL
3847         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3848         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3849         add_ldflags -Wl,-dynamic,-search_paths_first
3850         SLIBSUF=".dylib"
3851         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3852         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3853         objformat="macho"
3854         enabled x86_64 && objformat="macho64"
3855         enabled_any pic shared ||
3856             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3857         check_header dispatch/dispatch.h &&
3858             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3859         ;;
3860     msys*)
3861         die "Native MSYS builds are discouraged, please use the MINGW environment."
3862         ;;
3863     mingw32*|mingw64*)
3864         if test $target_os = "mingw32ce"; then
3865             disable network
3866         else
3867             target_os=mingw32
3868         fi
3869         LIBTARGET=i386
3870         if enabled x86_64; then
3871             LIBTARGET="i386:x86-64"
3872         elif enabled arm; then
3873             LIBTARGET=arm-wince
3874         fi
3875         check_ldflags -Wl,--nxcompat
3876         check_ldflags -Wl,--dynamicbase
3877         shlibdir_default="$bindir_default"
3878         SLIBPREF=""
3879         SLIBSUF=".dll"
3880         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3881         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3882         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3883         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3884         SLIB_INSTALL_LINKS=
3885         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3886         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3887         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3888         objformat="win32"
3889         dlltool="${cross_prefix}dlltool"
3890         ranlib=:
3891         enable dos_paths
3892         ;;
3893     win32|win64)
3894         disable symver
3895         if enabled shared; then
3896             # Link to the import library instead of the normal static library
3897             # for shared libs.
3898             LD_LIB='%.lib'
3899             # Cannot build both shared and static libs with MSVC or icl.
3900             disable static
3901         fi
3902         shlibdir_default="$bindir_default"
3903         SLIBPREF=""
3904         SLIBSUF=".dll"
3905         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3906         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3907         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3908         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3909         SLIB_INSTALL_LINKS=
3910         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3911         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3912         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3913         objformat="win32"
3914         ranlib=:
3915         enable dos_paths
3916         ;;
3917     cygwin*)
3918         target_os=cygwin
3919         shlibdir_default="$bindir_default"
3920         SLIBPREF="cyg"
3921         SLIBSUF=".dll"
3922         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3923         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3924         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3925         SLIB_INSTALL_LINKS=
3926         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3927         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3928         objformat="win32"
3929         enable dos_paths
3930         ;;
3931     *-dos|freedos|opendos)
3932         network_extralibs="-lsocket"
3933         objformat="coff"
3934         enable dos_paths
3935         add_cppflags -U__STRICT_ANSI__
3936         ;;
3937     linux)
3938         enable dv1394
3939         enable section_data_rel_ro
3940         ;;
3941     irix*)
3942         target_os=irix
3943         ranlib="echo ignoring ranlib"
3944         ;;
3945     os/2*)
3946         ln_s="cp -f"
3947         objformat="aout"
3948         add_cppflags -D_GNU_SOURCE
3949         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3950         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3951         LIBSUF="_s.a"
3952         SLIBPREF=""
3953         SLIBSUF=".dll"
3954         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3955         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3956         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3957             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3958             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3959             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3960             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
3961         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3962             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3963         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3964         enable dos_paths
3965         ;;
3966     gnu/kfreebsd)
3967         add_cppflags -D_BSD_SOURCE
3968         ;;
3969     gnu)
3970         ;;
3971     qnx)
3972         add_cppflags -D_QNX_SOURCE
3973         network_extralibs="-lsocket"
3974         ;;
3975     symbian)
3976         SLIBSUF=".dll"
3977         enable dos_paths
3978         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3979         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3980         add_ldflags -Wl,--target1-abs,--no-undefined \
3981                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3982                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3983         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3984                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3985                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3986         ;;
3987     osf1)
3988         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3989         ;;
3990     minix)
3991         ;;
3992     plan9)
3993         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3994                      -D_REENTRANT_SOURCE        \
3995                      -D_RESEARCH_SOURCE         \
3996                      -DFD_SETSIZE=96            \
3997                      -DHAVE_SOCK_OPTS
3998         add_compat strtod.o strtod=avpriv_strtod
3999         network_extralibs='-lbsd'
4000         exeobjs=compat/plan9/main.o
4001         cp_f='cp'
4002         ;;
4003     none)
4004         ;;
4005     *)
4006         die "Unknown OS '$target_os'."
4007         ;;
4008 esac
4009
4010 # determine libc flavour
4011
4012 probe_libc(){
4013     pfx=$1
4014     pfx_no_=${pfx%_}
4015     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4016     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4017         eval ${pfx}libc_type=uclibc
4018         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4019     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4020         eval ${pfx}libc_type=glibc
4021         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4022     # MinGW headers can be installed on Cygwin, so check for newlib first.
4023     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4024         eval ${pfx}libc_type=newlib
4025         add_${pfx}cppflags -U__STRICT_ANSI__
4026     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4027     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4028         eval ${pfx}libc_type=mingw64
4029         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4030         eval test \$${pfx_no_}cc_type = "gcc" &&
4031             add_${pfx}cppflags -D__printf__=__gnu_printf__
4032     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4033          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4034         eval ${pfx}libc_type=mingw32
4035         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4036             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4037             die "ERROR: MinGW32 runtime version must be >= 3.15."
4038         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4039         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700__" &&
4040             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
4041         eval test \$${pfx_no_}cc_type = "gcc" &&
4042             add_${pfx}cppflags -D__printf__=__gnu_printf__
4043     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4044         eval ${pfx}libc_type=msvcrt
4045         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4046             if [ "$pfx" = host_ ]; then
4047                 add_host_cppflags -Dsnprintf=_snprintf
4048             else
4049                 add_compat strtod.o strtod=avpriv_strtod
4050                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4051                                              _snprintf=avpriv_snprintf  \
4052                                              vsnprintf=avpriv_vsnprintf
4053             fi
4054         fi
4055         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
4056         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4057         # 0x601 by default unless something else is set by the user.
4058         # This can easily lead to us detecting functions only present
4059         # in such new versions and producing binaries requiring windows 7.0.
4060         # Therefore explicitly set the default to XP unless the user has
4061         # set something else on the command line.
4062         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4063         # family. For these cases, configure is free to use any functions
4064         # found in the SDK headers by default. (Alternatively, we could force
4065         # _WIN32_WINNT to 0x0602 in that case.)
4066         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4067             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4068 #ifdef WINAPI_FAMILY
4069 #include <winapifamily.h>
4070 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4071 #error not desktop
4072 #endif
4073 #endif
4074 EOF
4075         if [ "$pfx" = "" ]; then
4076             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4077         fi
4078     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4079         eval ${pfx}libc_type=klibc
4080     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4081         eval ${pfx}libc_type=bionic
4082     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4083         eval ${pfx}libc_type=solaris
4084         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4085     else
4086         eval ${pfx}libc_type=default
4087         add_${pfx}cppflags -D_DEFAULT_SOURCE
4088     fi
4089 }
4090
4091 probe_libc
4092 test -n "$libc_type" && enable libc_$libc_type
4093 probe_libc host_
4094 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4095
4096 case $libc_type in
4097     bionic)
4098         add_compat strtod.o strtod=avpriv_strtod
4099         ;;
4100 esac
4101
4102 # hacks for compiler/libc/os combinations
4103
4104 if enabled_all tms470 libc_glibc; then
4105     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4106     add_cppflags -D__USER_LABEL_PREFIX__=
4107     add_cppflags -D__builtin_memset=memset
4108     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4109     add_cflags   -pds=48    # incompatible redefinition of macro
4110 fi
4111
4112 if enabled_all ccc libc_glibc; then
4113     add_ldflags -Wl,-z,now  # calls to libots crash without this
4114 fi
4115
4116 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4117     add_cppflags '-I\$(SRC_PATH)/compat/float'
4118
4119 esc(){
4120     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4121 }
4122
4123 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
4124
4125 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4126
4127 set_default $PATHS_LIST
4128 set_default nm
4129
4130 # we need to build at least one lib type
4131 if ! enabled_any static shared; then
4132     cat <<EOF
4133 At least one library type must be built.
4134 Specify --enable-static to build the static libraries or --enable-shared to
4135 build the shared libraries as well. To only build the shared libraries specify
4136 --disable-static in addition to --enable-shared.
4137 EOF
4138     exit 1
4139 fi
4140
4141 disabled optimizations || check_cflags -fomit-frame-pointer
4142
4143 enable_weak_pic() {
4144     disabled pic && return
4145     enable pic
4146     add_cppflags -DPIC
4147     case "$target_os" in
4148     mingw*|cygwin*)
4149         ;;
4150     *)
4151         add_cflags -fPIC
4152         ;;
4153     esac
4154     add_asflags  -fPIC
4155 }
4156
4157 enabled pic && enable_weak_pic
4158
4159 check_cc <<EOF || die "Symbol mangling check failed."
4160 int ff_extern;
4161 EOF
4162 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4163 extern_prefix=${sym%%ff_extern*}
4164
4165 check_cc <<EOF && enable_weak inline_asm
4166 void foo(void) { __asm__ volatile ("" ::); }
4167 EOF
4168
4169 _restrict=
4170 for restrict_keyword in restrict __restrict__ __restrict; do
4171     check_cc <<EOF && _restrict=$restrict_keyword && break
4172 void foo(char * $restrict_keyword p);
4173 EOF
4174 done
4175
4176 check_cc <<EOF && enable pragma_deprecated
4177 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4178 EOF
4179
4180 check_cc <<EOF && enable attribute_packed
4181 struct { int x; } __attribute__((packed)) x;
4182 EOF
4183
4184 check_cc <<EOF && enable attribute_may_alias
4185 union { int x; } __attribute__((may_alias)) x;
4186 EOF
4187
4188 check_cc <<EOF || die "endian test failed"
4189 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4190 EOF
4191 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4192
4193 check_gas() {
4194     log "check_gas using '$as' as AS"
4195     # :vararg is used on aarch64, arm and ppc altivec
4196     check_as <<EOF || return 1
4197 .macro m n, y:vararg=0
4198 \n: .int \y
4199 .endm
4200 m x
4201 EOF
4202     # .altmacro is only used in arm asm
4203     ! enabled arm || check_as <<EOF || return 1
4204 .altmacro
4205 EOF
4206     enable gnu_as
4207     return 0
4208 }
4209
4210 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4211     nogas=:
4212     enabled_any arm aarch64 && nogas=die
4213     enabled_all ppc altivec && nogas=warn
4214     as_noop=-v
4215
4216     case $as_type in
4217         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4218         gcc)  gaspp_as_type=gas ;;
4219         *)    gaspp_as_type=$as_type ;;
4220     esac
4221
4222     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4223
4224     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4225         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4226
4227     if ! check_gas ; then
4228         as=${gas:=$as}
4229         check_gas || \
4230             $nogas "GNU assembler not found, install/update gas-preprocessor"
4231     fi
4232
4233     check_as <<EOF && enable as_func
4234 .func test
4235 .endfunc
4236 EOF
4237 fi
4238
4239 check_inline_asm inline_asm_labels '"1:\n"'
4240
4241 if enabled aarch64; then
4242     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4243     # internal assembler in clang 3.3 does not support this instruction
4244     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4245     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4246
4247     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4248
4249 elif enabled alpha; then
4250
4251     check_cflags -mieee
4252
4253 elif enabled arm; then
4254
4255     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4256     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4257     enabled thumb && check_cflags -mthumb || check_cflags -marm
4258
4259     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4260         enable vfp_args
4261     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4262         enable vfp_args
4263     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4264         case "${cross_prefix:-$cc}" in
4265             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4266             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4267 __asm__ (".eabi_attribute 28, 1");
4268 int main(void) { return 0; }
4269 EOF
4270         esac
4271         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4272     fi
4273
4274     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4275     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4276     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4277     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4278     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4279     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4280
4281     [ $target_os = linux ] || [ $target_os = android ] ||
4282         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4283             $ARCH_EXT_LIST_ARM
4284
4285     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4286
4287     check_as <<EOF && enable as_dn_directive
4288 ra .dn d0.i16
4289 .unreq ra
4290 EOF
4291     check_as <<EOF && enable as_fpu_directive
4292 .fpu neon
4293 EOF
4294
4295     # llvm's integrated assembler supports .object_arch from llvm 3.5
4296     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4297 .object_arch armv4
4298 EOF
4299
4300     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4301
4302 elif enabled mips; then
4303
4304     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4305
4306     # make sure that only an instruction set is enabled
4307     disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4308
4309     if enabled mips64; then
4310         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4311             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4312                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4313     else
4314         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4315             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4316                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4317     fi
4318
4319 elif enabled parisc; then
4320
4321     if enabled gcc; then
4322         case $($cc -dumpversion) in
4323             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4324         esac
4325     fi
4326
4327 elif enabled ppc; then
4328
4329     enable local_aligned_8 local_aligned_16 local_aligned_32
4330
4331     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4332     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4333     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4334     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4335
4336     # AltiVec flags: The FSF version of GCC differs from the Apple version
4337     if enabled altivec; then
4338         check_cflags -maltivec -mabi=altivec &&
4339         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4340         check_cflags -faltivec
4341
4342         # check if our compiler supports Motorola AltiVec C API
4343         check_cc <<EOF || disable altivec
4344 $inc_altivec_h
4345 int main(void) {
4346     vector signed int v1 = (vector signed int) { 0 };
4347     vector signed int v2 = (vector signed int) { 1 };
4348     v1 = vec_add(v1, v2);
4349     return 0;
4350 }
4351 EOF
4352
4353         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4354     fi
4355
4356     if enabled vsx; then
4357         check_cflags -mvsx &&
4358         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4359     fi
4360
4361     if enabled power8; then
4362         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4363     fi
4364
4365 elif enabled x86; then
4366
4367     check_builtin rdtsc    intrin.h   "__rdtsc()"
4368     check_builtin mm_empty mmintrin.h "_mm_empty()"
4369
4370     enable local_aligned_8 local_aligned_16 local_aligned_32
4371
4372     # check whether EBP is available on x86
4373     # As 'i' is stored on the stack, this program will crash
4374     # if the base pointer is used to access it because the
4375     # base pointer is cleared in the inline assembly code.
4376     check_exec_crash <<EOF && enable ebp_available
4377 volatile int i=0;
4378 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4379 return i;
4380 EOF
4381
4382     # check whether EBX is available on x86
4383     check_inline_asm ebx_available '""::"b"(0)' &&
4384         check_inline_asm ebx_available '"":::"%ebx"'
4385
4386     # check whether xmm clobbers are supported
4387     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4388
4389     # check whether binutils is new enough to compile SSSE3/MMXEXT
4390     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4391     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4392
4393     if ! disabled_any asm mmx yasm; then
4394         if check_cmd $yasmexe --version; then
4395             enabled x86_64 && yasm_extra="-m amd64"
4396             yasm_debug="-g dwarf2"
4397         elif check_cmd nasm -v; then
4398             yasmexe=nasm
4399             yasm_debug="-g -F dwarf"
4400             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4401         fi
4402
4403         YASMFLAGS="-f $objformat $yasm_extra"
4404         enabled pic               && append YASMFLAGS "-DPIC"
4405         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4406         case "$objformat" in
4407             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4408         esac
4409
4410         check_yasm "movbe ecx, [5]" && enable yasm ||
4411             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4412         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4413         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4414         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4415         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4416         check_yasm "CPU amdnop" || disable cpunop
4417     fi
4418
4419     case "$cpu" in
4420         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4421             disable fast_clz
4422         ;;
4423     esac
4424
4425 fi
4426
4427 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4428
4429 check_ldflags -Wl,--as-needed
4430
4431 if check_func dlopen; then
4432     ldl=
4433 elif check_func dlopen -ldl; then
4434     ldl=-ldl
4435 fi
4436
4437 if ! disabled network; then
4438     check_func getaddrinfo $network_extralibs
4439     check_func inet_aton $network_extralibs
4440
4441     check_type netdb.h "struct addrinfo"
4442     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4443     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4444     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4445     check_type poll.h "struct pollfd"
4446     check_type netinet/sctp.h "struct sctp_event_subscribe"
4447     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4448     check_type netinet/in.h "struct sockaddr_in6"
4449     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4450     check_type "sys/types.h sys/socket.h" socklen_t
4451
4452     # Prefer arpa/inet.h over winsock2
4453     if check_header arpa/inet.h ; then
4454         check_func closesocket
4455     elif check_header winsock2.h ; then
4456         check_func_headers winsock2.h closesocket -lws2 &&
4457             network_extralibs="-lws2" ||
4458         { check_func_headers winsock2.h closesocket -lws2_32 &&
4459             network_extralibs="-lws2_32"; } || disable winsock2_h network
4460         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4461
4462         check_type ws2tcpip.h socklen_t
4463         check_type ws2tcpip.h "struct addrinfo"
4464         check_type ws2tcpip.h "struct group_source_req"
4465         check_type ws2tcpip.h "struct ip_mreq_source"
4466         check_type ws2tcpip.h "struct ipv6_mreq"
4467         check_type winsock2.h "struct pollfd"
4468         check_struct winsock2.h "struct sockaddr" sa_len
4469         check_type ws2tcpip.h "struct sockaddr_in6"
4470         check_type ws2tcpip.h "struct sockaddr_storage"
4471     else
4472         disable network
4473     fi
4474 fi
4475
4476 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4477 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4478 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4479 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4480
4481 case "$custom_allocator" in
4482     jemalloc)
4483         # jemalloc by default does not use a prefix
4484         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4485     ;;
4486     tcmalloc)
4487         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
4488         malloc_prefix=tc_
4489     ;;
4490 esac
4491
4492 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4493 check_func  ${malloc_prefix}memalign            && enable memalign
4494 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4495
4496 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4497     check_func_headers time.h clock_gettime ||
4498         { check_lib time.h clock_gettime -lrt && LIBRT="-lrt"; }
4499
4500 check_func  fcntl
4501 check_func  fork
4502 check_func  gethrtime
4503 check_func  getopt
4504 check_func  getrusage
4505 check_func  gettimeofday
4506 check_func  gmtime_r
4507 check_func  isatty
4508 check_func  localtime_r
4509 check_func  mach_absolute_time
4510 check_func  mkstemp
4511 check_func  mmap
4512 check_func  mprotect
4513 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4514 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt; }
4515 check_func  sched_getaffinity
4516 check_func  setrlimit
4517 check_func  strerror_r
4518 check_func  sysconf
4519 check_func  sysctl
4520 check_func  usleep
4521
4522 check_func_headers io.h setmode
4523 check_func_headers stdlib.h getenv
4524
4525 check_func_headers windows.h CoTaskMemFree -lole32
4526 check_func_headers windows.h GetProcessAffinityMask
4527 check_func_headers windows.h GetProcessTimes
4528 check_func_headers windows.h GetSystemTimeAsFileTime
4529 check_func_headers windows.h LoadLibrary
4530 check_func_headers windows.h MapViewOfFile
4531 check_func_headers windows.h SetConsoleTextAttribute
4532 check_func_headers windows.h Sleep
4533 check_func_headers windows.h VirtualAlloc
4534 check_struct windows.h "CONDITION_VARIABLE" Ptr
4535
4536 check_header direct.h
4537 check_header dlfcn.h
4538 check_header d3d11.h
4539 check_header dxva.h
4540 check_header dxva2api.h
4541 check_header io.h
4542 check_header mach/mach_time.h
4543 check_header malloc.h
4544 check_header poll.h
4545 check_header sys/mman.h
4546 check_header sys/param.h
4547 check_header sys/resource.h
4548 check_header sys/select.h
4549 check_header sys/time.h
4550 check_header sys/un.h
4551 check_header unistd.h
4552 check_header valgrind/valgrind.h
4553 check_header vdpau/vdpau.h
4554 check_header vdpau/vdpau_x11.h
4555 check_header VideoDecodeAcceleration/VDADecoder.h
4556 check_header windows.h
4557 check_header X11/extensions/XvMClib.h
4558
4559 # it seems there are versions of clang in some distros that try to use the
4560 # gcc headers, which explodes for stdatomic
4561 # so we also check that atomics actually work here
4562 check_builtin stdatomic_h stdatomic.h "atomic_int foo; atomic_store(&foo, 0)"
4563
4564 check_lib "windows.h shellapi.h" CommandLineToArgvW   -lshell32
4565 check_lib "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
4566 check_lib "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
4567
4568 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4569
4570 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4571 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4572 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4573
4574 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
4575 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
4576 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
4577 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
4578 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
4579
4580 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
4581
4582 if ! disabled w32threads && ! enabled pthreads; then
4583     check_func_headers "windows.h process.h" _beginthreadex &&
4584         enable w32threads || disable w32threads
4585 fi
4586
4587 # check for some common methods of building with pthread support
4588 # do this before the optional library checks as some of them require pthreads
4589 if ! disabled pthreads && ! enabled w32threads; then
4590     enable pthreads
4591     if check_func pthread_join -pthread; then
4592         add_cflags -pthread
4593         add_extralibs -pthread
4594     elif check_func pthread_join -pthreads; then
4595         add_cflags -pthreads
4596         add_extralibs -pthreads
4597     elif check_func pthread_join -lpthreadGC2; then
4598         add_extralibs -lpthreadGC2
4599     elif check_lib pthread.h pthread_join -lpthread; then
4600         :
4601     elif ! check_func pthread_join; then
4602         disable pthreads
4603     fi
4604 fi
4605
4606 enabled pthreads &&
4607     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
4608
4609 disabled  zlib || check_lib  zlib.h      zlibVersion -lz   || disable  zlib
4610 disabled bzlib || check_lib bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4611
4612 check_lib math.h sin -lm && LIBM="-lm"
4613
4614 atan2f_args=2
4615 ldexpf_args=2
4616 powf_args=2
4617
4618 for func in $MATH_FUNCS; do
4619     eval check_mathfunc $func \${${func}_args:-1} $LIBM
4620 done
4621
4622 # these are off by default, so fail if requested and not available
4623 enabled avisynth          && { check_lib "avisynth/avisynth_c.h windows.h" LoadLibrary ||
4624                                check_lib "avxsynth/avxsynth_c.h dlfcn.h" dlopen -ldl   ||
4625                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4626 enabled cuda              && check_lib cuda.h cuInit -lcuda
4627 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4628 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4629 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4630 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4631 enabled libfaac           && require libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4632 enabled libfdk_aac        && require_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4633 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4634 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4635 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4636                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4637                                done || die "ERROR: libgsm not found"; }
4638 enabled libhdcd           && require_pkg_config libhdcd "hdcd/hdcd_simple.h" hdcd_new
4639 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4640 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
4641 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
4642 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4643 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
4644 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4645 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4646 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4647 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
4648 enabled libopenjpeg       && { check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4649                                require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; }
4650 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4651 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4652 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4653 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4654 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
4655 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
4656 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4657 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4658 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4659 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4660 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4661 enabled libvpx            && require_pkg_config "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version && {
4662     enabled libvpx_vp8_decoder && {
4663         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
4664             disable libvpx_vp8_decoder;
4665     }
4666     enabled libvpx_vp8_encoder && {
4667         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
4668             disable libvpx_vp8_encoder;
4669     }
4670     enabled libvpx_vp9_decoder && {
4671         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
4672             disable libvpx_vp9_decoder;
4673     }
4674     enabled libvpx_vp9_encoder && {
4675         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
4676             disable libvpx_vp9_encoder;
4677     }
4678     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
4679         die "libvpx enabled but no supported decoders found"
4680     fi
4681 }
4682 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4683 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4684 enabled libx264           && require_pkg_config x264 "stdint.h x264.h" x264_encoder_encode &&
4685                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4686                                die "ERROR: libx264 version must be >= 0.118."; } &&
4687                              { check_cpp_condition x264.h "X264_MPEG2" &&
4688                                enable libx262; }
4689 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
4690                              { check_cpp_condition x265.h "X265_BUILD >= 57" ||
4691                                die "ERROR: libx265 version must be >= 57."; }
4692 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
4693 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4694 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4695                                 { ! enabled cross_compile && {
4696                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
4697                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
4698                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
4699                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
4700                                die "ERROR: mmal not found"; }
4701 enabled mmal && check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"
4702 enabled omx_rpi && enable omx
4703 enabled omx               && { check_header OMX_Core.h ||
4704                                 { ! enabled cross_compile && enabled omx_rpi && {
4705                                     add_cflags -isystem/opt/vc/include/IL ; }
4706                                 check_header OMX_Core.h ; } ||
4707                                die "ERROR: OpenMAX IL headers not found"; }
4708 enabled openssl           && { { check_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
4709                                  check_pkg_config openssl openssl/ssl.h SSL_library_init; } && {
4710                                add_cflags $openssl_cflags && add_extralibs $openssl_libs; }||
4711                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4712                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4713                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4714                                die "ERROR: openssl not found"; }
4715
4716 enabled gnutls            && check_lib gmp.h mpz_export -lgmp && enable gmp
4717
4718 # libdc1394 check
4719 if enabled libdc1394; then
4720     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
4721         enable libdc1394_2; } ||
4722     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4723         enable libdc1394_1; } ||
4724     die "ERROR: No version of libdc1394 found "
4725 fi
4726
4727 if enabled nvenc; then
4728     check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."
4729     check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6" ||
4730         die "ERROR: NVENC API version 5 or older is not supported"
4731 fi
4732
4733 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4734     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4735     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4736     enable sdl
4737 fi
4738
4739 ! disabled pod2man   && check_cmd pod2man --help     && enable pod2man   || disable pod2man
4740 ! disabled texi2html && check_cmd texi2html -version && enable texi2html || disable texi2html
4741
4742 check_header linux/fb.h
4743 check_header linux/videodev2.h
4744 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4745
4746 check_header AVFoundation/AVFoundation.h &&
4747     check_objcflags -fobjc-arc &&
4748     add_extralibs -framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia ||
4749     disable AVFoundation_AVFoundation_h
4750
4751 check_header sys/videoio.h
4752
4753 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4754 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4755 # w32api 3.12 had it defined wrong
4756 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4757
4758 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4759 { check_header dev/bktr/ioctl_meteor.h &&
4760   check_header dev/bktr/ioctl_bt848.h; } ||
4761 { check_header machine/ioctl_meteor.h &&
4762   check_header machine/ioctl_bt848.h; } ||
4763 { check_header dev/video/meteor/ioctl_meteor.h &&
4764   check_header dev/video/bktr/ioctl_bt848.h; } ||
4765 check_header dev/ic/bt8xx.h
4766
4767 check_header sndio.h
4768 check_header sys/soundcard.h
4769 check_header soundcard.h
4770
4771 enabled_any alsa_indev alsa_outdev &&
4772     check_lib alsa/asoundlib.h snd_pcm_htimestamp -lasound
4773
4774 enabled jack_indev && check_lib jack/jack.h jack_client_open -ljack &&
4775     check_func jack_port_get_latency_range -ljack
4776
4777 enabled_any sndio_indev sndio_outdev && check_lib sndio.h sio_open -lsndio
4778
4779 if enabled libcdio; then
4780     check_lib "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4781     check_lib "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4782     die "ERROR: No usable libcdio/cdparanoia found"
4783 fi
4784
4785 if enabled libxcb; then
4786     check_pkg_config xcb-shape xcb/shape.h xcb_shape_rectangles || {
4787         enabled libxcb && die "ERROR: libxcb not found";
4788     } && enable libxcb
4789
4790     disabled libxcb_shm ||
4791         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
4792             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
4793         } && check_header sys/shm.h && enable libxcb_shm
4794
4795     disabled libxcb_xfixes ||
4796         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
4797             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
4798         } && enable libxcb_xfixes
4799
4800     add_cflags "$xcb_shape_cflags $xcb_event_cflags $xcb_shm_cflags $xcb_xfixes_cflags"
4801     add_extralibs "$xcb_shape_libs $xcb_event_libs $xcb_shm_libs $xcb_xfixes_libs"
4802 fi
4803
4804 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4805
4806 enabled vaapi &&
4807     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
4808     disable vaapi
4809
4810 enabled vaapi &&
4811     check_lib "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
4812     enable vaapi_drm
4813
4814 enabled vdpau &&
4815     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4816     disable vdpau
4817
4818 enabled_any vaapi vdpau && check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4819
4820 enabled vaapi && enabled xlib &&
4821     check_lib "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
4822     enable vaapi_x11
4823
4824 enabled vdpau && enabled xlib &&
4825     check_lib "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4826     enable vdpau_x11
4827
4828 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4829
4830 # add some useful compiler flags if supported
4831 check_cflags -Wdeclaration-after-statement
4832 check_cflags -Wall
4833 check_cflags -Wdisabled-optimization
4834 check_cflags -Wpointer-arith
4835 check_cflags -Wredundant-decls
4836 check_cflags -Wwrite-strings
4837 check_cflags -Wtype-limits
4838 check_cflags -Wundef
4839 check_cflags -Wmissing-prototypes
4840 check_cflags -Wstrict-prototypes