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[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:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --prefix=PREFIX          install in PREFIX [$prefix]
82   --bindir=DIR             install binaries in DIR [PREFIX/bin]
83   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
84   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
85   --libdir=DIR             install libs in DIR [PREFIX/lib]
86   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
87   --incdir=DIR             install includes in DIR [PREFIX/include]
88   --mandir=DIR             install man page in DIR [PREFIX/share/man]
89
90 Licensing options:
91   --enable-gpl             allow use of GPL code, the resulting libs
92                            and binaries will be under GPL [no]
93   --enable-version3        upgrade (L)GPL to version 3 [no]
94   --enable-nonfree         allow use of nonfree code, the resulting libs
95                            and binaries will be unredistributable [no]
96
97 Configuration options:
98   --disable-static         do not build static libraries [no]
99   --enable-shared          build shared libraries [no]
100   --enable-small           optimize for size instead of speed
101   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
102   --enable-gray            enable full grayscale support (slower color)
103   --disable-swscale-alpha  disable alpha channel support in swscale
104   --disable-all            disable building components, libraries and programs
105
106 Program options:
107   --disable-programs       do not build command line programs
108   --disable-avconv         disable avconv build
109   --disable-avplay         disable avplay build
110   --disable-avprobe        disable avprobe build
111   --disable-avserver       disable avserver build
112
113 Component options:
114   --disable-doc            do not build documentation
115   --disable-avdevice       disable libavdevice build
116   --disable-avcodec        disable libavcodec build
117   --disable-avformat       disable libavformat build
118   --disable-avutil         disable libavutil build
119   --disable-swscale        disable libswscale build
120   --disable-avfilter       disable video filter support [no]
121   --disable-avresample     disable libavresample build [no]
122   --disable-pthreads       disable pthreads [auto]
123   --disable-w32threads     disable Win32 threads [auto]
124   --disable-network        disable network support [no]
125   --disable-dct            disable DCT code
126   --disable-error-resilience disable error resilience code
127   --disable-lsp            disable LSP code
128   --disable-lzo            disable LZO decoder code
129   --disable-mdct           disable MDCT code
130   --disable-rdft           disable RDFT code
131   --disable-fft            disable FFT code
132
133 Hardware accelerators:
134   --enable-dxva2           enable DXVA2 code
135   --enable-vaapi           enable VAAPI code
136   --enable-vda             enable VDA code
137   --enable-vdpau           enable VDPAU code
138
139 Individual component options:
140   --disable-everything     disable all components listed below
141   --disable-encoder=NAME   disable encoder NAME
142   --enable-encoder=NAME    enable encoder NAME
143   --disable-encoders       disable all encoders
144   --disable-decoder=NAME   disable decoder NAME
145   --enable-decoder=NAME    enable decoder NAME
146   --disable-decoders       disable all decoders
147   --disable-hwaccel=NAME   disable hwaccel NAME
148   --enable-hwaccel=NAME    enable hwaccel NAME
149   --disable-hwaccels       disable all hwaccels
150   --disable-muxer=NAME     disable muxer NAME
151   --enable-muxer=NAME      enable muxer NAME
152   --disable-muxers         disable all muxers
153   --disable-demuxer=NAME   disable demuxer NAME
154   --enable-demuxer=NAME    enable demuxer NAME
155   --disable-demuxers       disable all demuxers
156   --enable-parser=NAME     enable parser NAME
157   --disable-parser=NAME    disable parser NAME
158   --disable-parsers        disable all parsers
159   --enable-bsf=NAME        enable bitstream filter NAME
160   --disable-bsf=NAME       disable bitstream filter NAME
161   --disable-bsfs           disable all bitstream filters
162   --enable-protocol=NAME   enable protocol NAME
163   --disable-protocol=NAME  disable protocol NAME
164   --disable-protocols      disable all protocols
165   --enable-indev=NAME      enable input device NAME
166   --disable-indev=NAME     disable input device NAME
167   --disable-indevs         disable input devices
168   --enable-outdev=NAME     enable output device NAME
169   --disable-outdev=NAME    disable output device NAME
170   --disable-outdevs        disable output devices
171   --disable-devices        disable all devices
172   --enable-filter=NAME     enable filter NAME
173   --disable-filter=NAME    disable filter NAME
174   --disable-filters        disable all filters
175
176 External library support:
177   --enable-avisynth        enable reading of AviSynth script files [no]
178   --enable-bzlib           enable bzlib [autodetect]
179   --enable-frei0r          enable frei0r video filtering
180   --enable-gnutls          enable gnutls [no]
181   --enable-libcdio         enable audio CD grabbing with libcdio
182   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
183                            and libraw1394 [no]
184   --enable-libfaac         enable AAC encoding via libfaac [no]
185   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
186   --enable-libfreetype     enable libfreetype [no]
187   --enable-libgsm          enable GSM de/encoding via libgsm [no]
188   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
189   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
190   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
191   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
192   --enable-libopencv       enable video filtering via libopencv [no]
193   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
194   --enable-libopus         enable Opus decoding via libopus [no]
195   --enable-libpulse        enable Pulseaudio input via libpulse [no]
196   --enable-librtmp         enable RTMP[E] support via librtmp [no]
197   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
198   --enable-libspeex        enable Speex de/encoding via libspeex [no]
199   --enable-libtheora       enable Theora encoding via libtheora [no]
200   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
201   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
202   --enable-libvorbis       enable Vorbis encoding via libvorbis [no]
203   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
204   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
205   --enable-libwebp         enable WebP encoding via libwebp [no]
206   --enable-libx264         enable H.264 encoding via x264 [no]
207   --enable-libx265         enable HEVC encoding via x265 [no]
208   --enable-libxavs         enable AVS encoding via xavs [no]
209   --enable-libxvid         enable Xvid encoding via xvidcore,
210                            native MPEG-4/Xvid encoder exists [no]
211   --enable-openssl         enable openssl [no]
212   --enable-x11grab         enable X11 grabbing [no]
213   --enable-zlib            enable zlib [autodetect]
214
215 Advanced options (experts only):
216   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
217   --enable-cross-compile   assume a cross-compiler is used
218   --sysroot=PATH           root of cross-build tree
219   --sysinclude=PATH        location of cross-build system headers
220   --target-os=OS           compiler targets OS [$target_os]
221   --target-exec=CMD        command to run executables on target
222   --target-path=DIR        path to view of build directory on target
223   --target-samples=DIR     path to samples directory on target
224   --toolchain=NAME         set tool defaults according to NAME
225   --nm=NM                  use nm tool
226   --ar=AR                  use archive tool AR [$ar_default]
227   --as=AS                  use assembler AS [$as_default]
228   --cc=CC                  use C compiler CC [$cc_default]
229   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
230   --ld=LD                  use linker LD
231   --host-cc=HOSTCC         use host C compiler HOSTCC
232   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
233   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
234   --host-ld=HOSTLD         use host linker HOSTLD
235   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
236   --host-libs=HLIBS        use libs HLIBS when linking for host
237   --host-os=OS             compiler host OS [$target_os]
238   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
239   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
240   --extra-libs=ELIBS       add ELIBS [$ELIBS]
241   --extra-version=STRING   version string suffix []
242   --optflags=OPTFLAGS      override optimization-related compiler flags
243   --build-suffix=SUFFIX    library name suffix []
244   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
245   --arch=ARCH              select architecture [$arch]
246   --cpu=CPU                select the minimum required CPU (affects
247                            instruction selection, may crash on older CPUs)
248   --enable-pic             build position-independent code
249   --enable-sram            allow use of on-chip SRAM
250   --enable-thumb           compile for Thumb instruction set
251   --disable-symver         disable symbol versioning
252   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
253   --disable-safe-bitstream-reader
254                            disable buffer boundary checking in bitreaders
255                            (faster, but may crash)
256   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
257   --enable-lto             use link-time optimization
258
259 Optimization options (experts only):
260   --disable-asm            disable all assembler optimizations
261   --disable-altivec        disable AltiVec optimizations
262   --disable-amd3dnow       disable 3DNow! optimizations
263   --disable-amd3dnowext    disable 3DNow! extended optimizations
264   --disable-mmx            disable MMX optimizations
265   --disable-mmxext         disable MMXEXT optimizations
266   --disable-sse            disable SSE optimizations
267   --disable-sse2           disable SSE2 optimizations
268   --disable-sse3           disable SSE3 optimizations
269   --disable-ssse3          disable SSSE3 optimizations
270   --disable-sse4           disable SSE4 optimizations
271   --disable-sse42          disable SSE4.2 optimizations
272   --disable-avx            disable AVX optimizations
273   --disable-xop            disable XOP optimizations
274   --disable-fma3           disable FMA3 optimizations
275   --disable-fma4           disable FMA4 optimizations
276   --disable-avx2           disable AVX2 optimizations
277   --disable-armv5te        disable armv5te optimizations
278   --disable-armv6          disable armv6 optimizations
279   --disable-armv6t2        disable armv6t2 optimizations
280   --disable-vfp            disable VFP optimizations
281   --disable-neon           disable NEON optimizations
282   --disable-vis            disable VIS optimizations
283   --disable-inline-asm     disable use of inline assembler
284   --disable-yasm           disable use of yasm assembler
285
286 Developer options (useful when working on Libav itself):
287   --disable-debug          disable debugging symbols
288   --enable-debug=LEVEL     set the debug level [$debuglevel]
289   --disable-optimizations  disable compiler optimizations
290   --enable-extra-warnings  enable more compiler warnings
291   --samples=PATH           location of test samples for FATE, if not set use
292                            \$LIBAV_SAMPLES at make invocation time.
293   --enable-neon-clobber-test check NEON registers for clobbering (should be
294                            used only for debugging purposes)
295   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
296                            should be used only for debugging purposes)
297   --enable-random          randomly enable/disable components
298   --disable-random
299   --enable-random=LIST     randomly enable/disable specific components or
300   --disable-random=LIST    component groups. LIST is a comma-separated list
301                            of NAME[:PROB] entries where NAME is a component
302                            (group) and PROB the probability associated with
303                            NAME (default 0.5).
304   --random-seed=VALUE      seed value for --enable/disable-random
305
306 NOTE: Object files are built at the place where configure is launched.
307 EOF
308   exit 0
309 }
310
311 quotes='""'
312
313 log(){
314     echo "$@" >> $logfile
315 }
316
317 log_file(){
318     log BEGIN $1
319     pr -n -t $1 >> $logfile
320     log END $1
321 }
322
323 echolog(){
324     log "$@"
325     echo "$@"
326 }
327
328 warn(){
329     log "WARNING: $*"
330     WARNINGS="${WARNINGS}WARNING: $*\n"
331 }
332
333 die(){
334     echolog "$@"
335     cat <<EOF
336
337 If you think configure made a mistake, make sure you are using the latest
338 version from Git.  If the latest version fails, report the problem to the
339 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
340 EOF
341     if disabled logging; then
342         cat <<EOF
343 Rerun configure with logging enabled (do not use --disable-logging), and
344 include the log this produces with your report.
345 EOF
346     else
347         cat <<EOF
348 Include the log file "$logfile" produced by configure as this will help
349 solving the problem.
350 EOF
351     fi
352     exit 1
353 }
354
355 # Avoid locale weirdness, besides we really just want to translate ASCII.
356 toupper(){
357     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
358 }
359
360 tolower(){
361     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
362 }
363
364 c_escape(){
365     echo "$*" | sed 's/["\\]/\\\0/g'
366 }
367
368 sh_quote(){
369     v=$(echo "$1" | sed "s/'/'\\\\''/g")
370     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
371     echo "$v"
372 }
373
374 cleanws(){
375     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
376 }
377
378 filter(){
379     pat=$1
380     shift
381     for v; do
382         eval "case $v in $pat) echo $v ;; esac"
383     done
384 }
385
386 filter_out(){
387     pat=$1
388     shift
389     for v; do
390         eval "case $v in $pat) ;; *) echo $v ;; esac"
391     done
392 }
393
394 map(){
395     m=$1
396     shift
397     for v; do eval $m; done
398 }
399
400 add_suffix(){
401     suffix=$1
402     shift
403     for v; do echo ${v}${suffix}; done
404 }
405
406 set_all(){
407     value=$1
408     shift
409     for var in $*; do
410         eval $var=$value
411     done
412 }
413
414 set_weak(){
415     value=$1
416     shift
417     for var; do
418         eval : \${$var:=$value}
419     done
420 }
421
422 sanitize_var_name(){
423     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
424 }
425
426 set_safe(){
427     var=$1
428     shift
429     eval $(sanitize_var_name "$var")='$*'
430 }
431
432 get_safe(){
433     eval echo \$$(sanitize_var_name "$1")
434 }
435
436 pushvar(){
437     for pvar in $*; do
438         eval level=\${${pvar}_level:=0}
439         eval ${pvar}_${level}="\$$pvar"
440         eval ${pvar}_level=$(($level+1))
441     done
442 }
443
444 popvar(){
445     for pvar in $*; do
446         eval level=\${${pvar}_level:-0}
447         test $level = 0 && continue
448         eval level=$(($level-1))
449         eval $pvar="\${${pvar}_${level}}"
450         eval ${pvar}_level=$level
451         eval unset ${pvar}_${level}
452     done
453 }
454
455 enable(){
456     set_all yes $*
457 }
458
459 disable(){
460     set_all no $*
461 }
462
463 enable_weak(){
464     set_weak yes $*
465 }
466
467 disable_weak(){
468     set_weak no $*
469 }
470
471 enable_safe(){
472     for var; do
473         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
474     done
475 }
476
477 disable_safe(){
478     for var; do
479         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
480     done
481 }
482
483 do_enable_deep(){
484     for var; do
485         enabled $var && continue
486         eval sel="\$${var}_select"
487         eval sgs="\$${var}_suggest"
488         pushvar var sgs
489         enable_deep $sel
490         popvar sgs
491         enable_deep_weak $sgs
492         popvar var
493     done
494 }
495
496 enable_deep(){
497     do_enable_deep $*
498     enable $*
499 }
500
501 enable_deep_weak(){
502     for var; do
503         disabled $var && continue
504         pushvar var
505         do_enable_deep $var
506         popvar var
507         enable_weak $var
508     done
509 }
510
511 enabled(){
512     test "${1#!}" = "$1" && op== || op=!=
513     eval test "x\$${1#!}" $op "xyes"
514 }
515
516 disabled(){
517     test "${1#!}" = "$1" && op== || op=!=
518     eval test "x\$${1#!}" $op "xno"
519 }
520
521 enabled_all(){
522     for opt; do
523         enabled $opt || return 1
524     done
525 }
526
527 disabled_all(){
528     for opt; do
529         disabled $opt || return 1
530     done
531 }
532
533 enabled_any(){
534     for opt; do
535         enabled $opt && return 0
536     done
537 }
538
539 disabled_any(){
540     for opt; do
541         disabled $opt && return 0
542     done
543     return 1
544 }
545
546 set_default(){
547     for opt; do
548         eval : \${$opt:=\$${opt}_default}
549     done
550 }
551
552 is_in(){
553     value=$1
554     shift
555     for var in $*; do
556         [ $var = $value ] && return 0
557     done
558     return 1
559 }
560
561 do_check_deps(){
562     for cfg; do
563         cfg="${cfg#!}"
564         enabled ${cfg}_checking && die "Circular dependency for $cfg."
565         disabled ${cfg}_checking && continue
566         enable ${cfg}_checking
567         append allopts $cfg
568
569         eval dep_all="\$${cfg}_deps"
570         eval dep_any="\$${cfg}_deps_any"
571         eval dep_sel="\$${cfg}_select"
572         eval dep_sgs="\$${cfg}_suggest"
573         eval dep_ifa="\$${cfg}_if"
574         eval dep_ifn="\$${cfg}_if_any"
575
576         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
577         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
578         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
579
580         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
581         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
582         enabled_all  $dep_all || disable $cfg
583         enabled_any  $dep_any || disable $cfg
584         disabled_any $dep_sel && disable $cfg
585
586         if enabled $cfg; then
587             enable_deep $dep_sel
588             enable_deep_weak $dep_sgs
589         fi
590
591         disable ${cfg}_checking
592     done
593 }
594
595 check_deps(){
596     unset allopts
597
598     do_check_deps "$@"
599
600     for cfg in $allopts; do
601         enabled $cfg || continue
602         eval dep_extralibs="\$${cfg}_extralibs"
603         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
604     done
605 }
606
607 print_config(){
608     pfx=$1
609     files=$2
610     shift 2
611     map 'eval echo "$v \${$v:-no}"' "$@" |
612     awk "BEGIN { split(\"$files\", files) }
613         {
614             c = \"$pfx\" toupper(\$1);
615             v = \$2;
616             sub(/yes/, 1, v);
617             sub(/no/,  0, v);
618             for (f in files) {
619                 file = files[f];
620                 if (file ~ /\\.h\$/) {
621                     printf(\"#define %s %d\\n\", c, v) >>file;
622                 } else if (file ~ /\\.asm\$/) {
623                     printf(\"%%define %s %d\\n\", c, v) >>file;
624                 } else if (file ~ /\\.mak\$/) {
625                     n = -v ? \"\" : \"!\";
626                     printf(\"%s%s=yes\\n\", n, c) >>file;
627                 }
628             }
629         }"
630 }
631
632 print_enabled(){
633     suf=$1
634     shift
635     for v; do
636         enabled $v && printf "%s\n" ${v%$suf};
637     done
638 }
639
640 append(){
641     var=$1
642     shift
643     eval "$var=\"\$$var $*\""
644 }
645
646 prepend(){
647     var=$1
648     shift
649     eval "$var=\"$* \$$var\""
650 }
651
652 add_cppflags(){
653     append CPPFLAGS "$@"
654 }
655
656 add_cflags(){
657     append CFLAGS $($cflags_filter "$@")
658 }
659
660 add_asflags(){
661     append ASFLAGS $($asflags_filter "$@")
662 }
663
664 add_ldflags(){
665     append LDFLAGS $($ldflags_filter "$@")
666 }
667
668 add_stripflags(){
669     append STRIPFLAGS "$@"
670 }
671
672 add_extralibs(){
673     prepend extralibs $($ldflags_filter "$@")
674 }
675
676 add_host_cppflags(){
677     append host_cppflags "$@"
678 }
679
680 add_host_cflags(){
681     append host_cflags $($host_cflags_filter "$@")
682 }
683
684 add_host_ldflags(){
685     append host_ldflags $($host_ldflags_filter "$@")
686 }
687
688 add_compat(){
689     append compat_objs $1
690     shift
691     map 'add_cppflags -D$v' "$@"
692 }
693
694 check_cmd(){
695     log "$@"
696     "$@" >> $logfile 2>&1
697 }
698
699 cc_o(){
700     eval printf '%s\\n' $CC_O
701 }
702
703 cc_e(){
704     eval printf '%s\\n' $CC_E
705 }
706
707 check_cc(){
708     log check_cc "$@"
709     cat > $TMPC
710     log_file $TMPC
711     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
712 }
713
714 check_cpp(){
715     log check_cpp "$@"
716     cat > $TMPC
717     log_file $TMPC
718     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
719 }
720
721 as_o(){
722     eval printf '%s\\n' $AS_O
723 }
724
725 check_as(){
726     log check_as "$@"
727     cat > $TMPS
728     log_file $TMPS
729     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
730 }
731
732 check_inline_asm(){
733     log check_inline_asm "$@"
734     name="$1"
735     code="$2"
736     shift 2
737     disable $name
738     check_cc "$@" <<EOF && enable $name
739 void foo(void){ __asm__ volatile($code); }
740 EOF
741 }
742
743 check_insn(){
744     log check_insn "$@"
745     check_inline_asm ${1}_inline "\"$2\""
746     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
747 }
748
749 check_yasm(){
750     log check_yasm "$@"
751     echo "$1" > $TMPS
752     log_file $TMPS
753     shift 1
754     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
755 }
756
757 ld_o(){
758     eval printf '%s\\n' $LD_O
759 }
760
761 check_ld(){
762     log check_ld "$@"
763     flags=$(filter_out '-l*' "$@")
764     libs=$(filter '-l*' "$@")
765     check_cc $($cflags_filter $flags) || return
766     flags=$($ldflags_filter $flags)
767     libs=$($ldflags_filter $libs)
768     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
769 }
770
771 print_include(){
772     hdr=$1
773     test "${hdr%.h}" = "${hdr}" &&
774         echo "#include $hdr"    ||
775         echo "#include <$hdr>"
776 }
777
778 check_code(){
779     log check_code "$@"
780     check=$1
781     headers=$2
782     code=$3
783     shift 3
784     {
785         for hdr in $headers; do
786             print_include $hdr
787         done
788         echo "int main(void) { $code; return 0; }"
789     } | check_$check "$@"
790 }
791
792 check_cppflags(){
793     log check_cppflags "$@"
794     check_cc "$@" <<EOF && append CPPFLAGS "$@"
795 int x;
796 EOF
797 }
798
799 test_cflags(){
800     log test_cflags "$@"
801     set -- $($cflags_filter "$@")
802     check_cc "$@" <<EOF
803 int x;
804 EOF
805 }
806
807 check_cflags(){
808     log check_cflags "$@"
809     test_cflags "$@" && add_cflags "$@"
810 }
811
812 test_ldflags(){
813     log test_ldflags "$@"
814     check_ld "$@" <<EOF
815 int main(void){ return 0; }
816 EOF
817 }
818
819 check_ldflags(){
820     log check_ldflags "$@"
821     test_ldflags "$@" && add_ldflags "$@"
822 }
823
824 test_stripflags(){
825     log test_stripflags "$@"
826     # call check_cc to get a fresh TMPO
827     check_cc <<EOF
828 int main(void) { return 0; }
829 EOF
830     check_cmd $strip $STRIPFLAGS "$@" $TMPO
831 }
832
833 check_stripflags(){
834     log check_stripflags "$@"
835     test_stripflags "$@" && add_stripflags "$@"
836 }
837
838 check_header(){
839     log check_header "$@"
840     header=$1
841     shift
842     disable_safe $header
843     check_cpp "$@" <<EOF && enable_safe $header
844 #include <$header>
845 int x;
846 EOF
847 }
848
849 check_func(){
850     log check_func "$@"
851     func=$1
852     shift
853     disable $func
854     check_ld "$@" <<EOF && enable $func
855 extern int $func();
856 int main(void){ $func(); }
857 EOF
858 }
859
860 check_mathfunc(){
861     log check_mathfunc "$@"
862     func=$1
863     narg=$2
864     shift 2
865     test $narg = 2 && args="f, g" || args="f"
866     disable $func
867     check_ld "$@" <<EOF && enable $func
868 #include <math.h>
869 float foo(float f, float g) { return $func($args); }
870 int main(void){ return 0; }
871 EOF
872 }
873
874 check_func_headers(){
875     log check_func_headers "$@"
876     headers=$1
877     funcs=$2
878     shift 2
879     {
880         for hdr in $headers; do
881             print_include $hdr
882         done
883         for func in $funcs; do
884             echo "long check_$func(void) { return (long) $func; }"
885         done
886         echo "int main(void) { return 0; }"
887     } | check_ld "$@" && enable $funcs && enable_safe $headers
888 }
889
890 check_cpp_condition(){
891     log check_cpp_condition "$@"
892     header=$1
893     condition=$2
894     shift 2
895     check_cpp "$@" <<EOF
896 #include <$header>
897 #if !($condition)
898 #error "unsatisfied condition: $condition"
899 #endif
900 EOF
901 }
902
903 check_lib(){
904     log check_lib "$@"
905     header="$1"
906     func="$2"
907     shift 2
908     check_header $header && check_func $func "$@" && add_extralibs "$@"
909 }
910
911 check_lib2(){
912     log check_lib2 "$@"
913     headers="$1"
914     funcs="$2"
915     shift 2
916     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
917 }
918
919 check_pkg_config(){
920     log check_pkg_config "$@"
921     pkg="$1"
922     headers="$2"
923     funcs="$3"
924     shift 3
925     check_cmd $pkg_config --exists --print-errors $pkg || return
926     pkg_cflags=$($pkg_config --cflags $pkg)
927     pkg_libs=$($pkg_config --libs $pkg)
928     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
929         set_safe ${pkg}_cflags $pkg_cflags   &&
930         set_safe ${pkg}_libs   $pkg_libs
931 }
932
933 check_exec(){
934     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
935 }
936
937 check_exec_crash(){
938     code=$(cat)
939
940     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
941     # are safe but may not be available everywhere.  Thus we use
942     # raise(SIGTERM) instead.  The check is run in a subshell so we
943     # can redirect the "Terminated" message from the shell.  SIGBUS
944     # is not defined by standard C so it is used conditionally.
945
946     (check_exec "$@") >> $logfile 2>&1 <<EOF
947 #include <signal.h>
948 static void sighandler(int sig){
949     raise(SIGTERM);
950 }
951 int foo(void){
952     $code
953 }
954 int (*func_ptr)(void) = foo;
955 int main(void){
956     signal(SIGILL, sighandler);
957     signal(SIGFPE, sighandler);
958     signal(SIGSEGV, sighandler);
959 #ifdef SIGBUS
960     signal(SIGBUS, sighandler);
961 #endif
962     return func_ptr();
963 }
964 EOF
965 }
966
967 check_type(){
968     log check_type "$@"
969     headers=$1
970     type=$2
971     shift 2
972     disable_safe "$type"
973     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
974 }
975
976 check_struct(){
977     log check_struct "$@"
978     headers=$1
979     struct=$2
980     member=$3
981     shift 3
982     disable_safe "${struct}_${member}"
983     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
984         enable_safe "${struct}_${member}"
985 }
986
987 check_builtin(){
988     log check_builtin "$@"
989     name=$1
990     headers=$2
991     builtin=$3
992     shift 3
993     disable "$name"
994     check_code ld "$headers" "$builtin" "$@" && enable "$name"
995 }
996
997 require(){
998     name="$1"
999     header="$2"
1000     func="$3"
1001     shift 3
1002     check_lib $header $func "$@" || die "ERROR: $name not found"
1003 }
1004
1005 require2(){
1006     name="$1"
1007     headers="$2"
1008     func="$3"
1009     shift 3
1010     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1011 }
1012
1013 require_pkg_config(){
1014     pkg="$1"
1015     check_pkg_config "$@" || die "ERROR: $pkg not found"
1016     add_cflags    $(get_safe ${pkg}_cflags)
1017     add_extralibs $(get_safe ${pkg}_libs)
1018 }
1019
1020 hostcc_e(){
1021     eval printf '%s\\n' $HOSTCC_E
1022 }
1023
1024 hostcc_o(){
1025     eval printf '%s\\n' $HOSTCC_O
1026 }
1027
1028 check_host_cc(){
1029     log check_host_cc "$@"
1030     cat > $TMPC
1031     log_file $TMPC
1032     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1033 }
1034
1035 check_host_cpp(){
1036     log check_host_cpp "$@"
1037     cat > $TMPC
1038     log_file $TMPC
1039     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1040 }
1041
1042 check_host_cppflags(){
1043     log check_host_cppflags "$@"
1044     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1045 int x;
1046 EOF
1047 }
1048
1049 check_host_cflags(){
1050     log check_host_cflags "$@"
1051     set -- $($host_cflags_filter "$@")
1052     check_host_cc "$@" <<EOF && append host_cflags "$@"
1053 int x;
1054 EOF
1055 }
1056
1057 check_host_cpp_condition(){
1058     log check_host_cpp_condition "$@"
1059     header=$1
1060     condition=$2
1061     shift 2
1062     check_host_cpp "$@" <<EOF
1063 #include <$header>
1064 #if !($condition)
1065 #error "unsatisfied condition: $condition"
1066 #endif
1067 EOF
1068 }
1069
1070 apply(){
1071     file=$1
1072     shift
1073     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1074 }
1075
1076 cp_if_changed(){
1077     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1078     mkdir -p "$(dirname $2)"
1079     $cp_f "$1" "$2"
1080 }
1081
1082 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1083 # system-dependent things.
1084
1085 COMPONENT_LIST="
1086     bsfs
1087     decoders
1088     demuxers
1089     encoders
1090     filters
1091     hwaccels
1092     indevs
1093     muxers
1094     outdevs
1095     parsers
1096     protocols
1097 "
1098
1099 EXAMPLE_LIST="
1100     avcodec_example
1101     filter_audio_example
1102     metadata_example
1103     output_example
1104     transcode_aac_example
1105 "
1106
1107 EXTERNAL_LIBRARY_LIST="
1108     avisynth
1109     bzlib
1110     frei0r
1111     gnutls
1112     libcdio
1113     libdc1394
1114     libfaac
1115     libfdk_aac
1116     libfreetype
1117     libgsm
1118     libilbc
1119     libmp3lame
1120     libopencore_amrnb
1121     libopencore_amrwb
1122     libopencv
1123     libopenjpeg
1124     libopus
1125     libpulse
1126     librtmp
1127     libschroedinger
1128     libspeex
1129     libtheora
1130     libvo_aacenc
1131     libvo_amrwbenc
1132     libvorbis
1133     libvpx
1134     libwavpack
1135     libwebp
1136     libx264
1137     libx265
1138     libxavs
1139     libxvid
1140     openssl
1141     x11grab
1142     zlib
1143 "
1144
1145 HWACCEL_LIST="
1146     dxva2
1147     vaapi
1148     vda
1149     vdpau
1150 "
1151 LIBRARY_LIST="
1152     avcodec
1153     avdevice
1154     avfilter
1155     avformat
1156     avresample
1157     avutil
1158     swscale
1159 "
1160
1161 PROGRAM_LIST="
1162     avconv
1163     avplay
1164     avprobe
1165     avserver
1166 "
1167
1168 CONFIG_LIST="
1169     $COMPONENT_LIST
1170     $EXAMPLE_LIST
1171     $EXTERNAL_LIBRARY_LIST
1172     $HWACCEL_LIST
1173     $LIBRARY_LIST
1174     $PROGRAM_LIST
1175     dct
1176     doc
1177     error_resilience
1178     fft
1179     gpl
1180     gray
1181     hardcoded_tables
1182     lsp
1183     lzo
1184     mdct
1185     memalign_hack
1186     neon_clobber_test
1187     network
1188     nonfree
1189     pod2man
1190     pic
1191     rdft
1192     runtime_cpudetect
1193     safe_bitstream_reader
1194     shared
1195     small
1196     sram
1197     static
1198     swscale_alpha
1199     texi2html
1200     thumb
1201     version3
1202     xmm_clobber_test
1203 "
1204
1205 THREADS_LIST='
1206     pthreads
1207     w32threads
1208 '
1209
1210 ATOMICS_LIST='
1211     atomics_gcc
1212     atomics_suncc
1213     atomics_win32
1214 '
1215
1216 ARCH_LIST='
1217     aarch64
1218     alpha
1219     arm
1220     avr32
1221     avr32_ap
1222     avr32_uc
1223     bfin
1224     ia64
1225     m68k
1226     mips
1227     mips64
1228     parisc
1229     ppc
1230     ppc64
1231     s390
1232     sh4
1233     sparc
1234     sparc64
1235     tilegx
1236     tilepro
1237     tomi
1238     x86
1239     x86_32
1240     x86_64
1241 '
1242
1243 ARCH_EXT_LIST_ARM='
1244     armv5te
1245     armv6
1246     armv6t2
1247     neon
1248     vfp
1249     vfpv3
1250 '
1251
1252 ARCH_EXT_LIST_X86_SIMD='
1253     amd3dnow
1254     amd3dnowext
1255     avx
1256     avx2
1257     xop
1258     fma3
1259     fma4
1260     mmx
1261     mmxext
1262     sse
1263     sse2
1264     sse3
1265     sse4
1266     sse42
1267     ssse3
1268 '
1269
1270 ARCH_EXT_LIST_X86="
1271     $ARCH_EXT_LIST_X86_SIMD
1272     cpunop
1273     i686
1274 "
1275
1276 ARCH_EXT_LIST="
1277     $ARCH_EXT_LIST_ARM
1278     $ARCH_EXT_LIST_X86
1279     altivec
1280     ppc4xx
1281     vis
1282 "
1283
1284 HAVE_LIST_CMDLINE='
1285     inline_asm
1286     symver
1287     yasm
1288 '
1289
1290 HAVE_LIST_PUB='
1291     bigendian
1292     fast_unaligned
1293 '
1294
1295 MATH_FUNCS="
1296     atanf
1297     atan2f
1298     cbrtf
1299     cosf
1300     exp2
1301     exp2f
1302     expf
1303     isinf
1304     isnan
1305     ldexpf
1306     llrint
1307     llrintf
1308     log2
1309     log2f
1310     log10f
1311     lrint
1312     lrintf
1313     powf
1314     rint
1315     round
1316     roundf
1317     sinf
1318     trunc
1319     truncf
1320 "
1321
1322 HAVE_LIST="
1323     $ARCH_EXT_LIST
1324     $(add_suffix _external $ARCH_EXT_LIST)
1325     $(add_suffix _inline   $ARCH_EXT_LIST)
1326     $HAVE_LIST_CMDLINE
1327     $HAVE_LIST_PUB
1328     $THREADS_LIST
1329     $ATOMICS_LIST
1330     $MATH_FUNCS
1331     aligned_malloc
1332     aligned_stack
1333     alsa_asoundlib_h
1334     altivec_h
1335     arpa_inet_h
1336     asm_mod_q
1337     atomic_cas_ptr
1338     atomics_native
1339     attribute_may_alias
1340     attribute_packed
1341     cdio_paranoia_h
1342     cdio_paranoia_paranoia_h
1343     closesocket
1344     CommandLineToArgvW
1345     CryptGenRandom
1346     dcbzl
1347     dev_bktr_ioctl_bt848_h
1348     dev_bktr_ioctl_meteor_h
1349     dev_ic_bt8xx_h
1350     dev_video_bktr_ioctl_bt848_h
1351     dev_video_meteor_ioctl_meteor_h
1352     direct_h
1353     dlfcn_h
1354     dlopen
1355     dos_paths
1356     dxva_h
1357     ebp_available
1358     ebx_available
1359     fast_64bit
1360     fast_clz
1361     fast_cmov
1362     fcntl
1363     fork
1364     getaddrinfo
1365     gethrtime
1366     getopt
1367     GetProcessAffinityMask
1368     GetProcessMemoryInfo
1369     GetProcessTimes
1370     GetSystemTimeAsFileTime
1371     getrusage
1372     getservbyport
1373     gettimeofday
1374     gnu_as
1375     gsm_h
1376     ibm_asm
1377     inet_aton
1378     io_h
1379     inline_asm_labels
1380     isatty
1381     jack_port_get_latency_range
1382     ldbrx
1383     libc_msvcrt
1384     libdc1394_1
1385     libdc1394_2
1386     local_aligned_16
1387     local_aligned_8
1388     localtime_r
1389     loongson
1390     mach_absolute_time
1391     mach_mach_time_h
1392     machine_ioctl_bt848_h
1393     machine_ioctl_meteor_h
1394     machine_rw_barrier
1395     malloc_h
1396     MapViewOfFile
1397     memalign
1398     MemoryBarrier
1399     mkstemp
1400     mm_empty
1401     mmap
1402     mprotect
1403     nanosleep
1404     poll_h
1405     posix_memalign
1406     pragma_deprecated
1407     rdtsc
1408     sched_getaffinity
1409     sdl
1410     SetConsoleTextAttribute
1411     setmode
1412     setrlimit
1413     Sleep
1414     sndio_h
1415     socklen_t
1416     soundcard_h
1417     strerror_r
1418     strptime
1419     struct_addrinfo
1420     struct_group_source_req
1421     struct_ip_mreq_source
1422     struct_ipv6_mreq
1423     struct_pollfd
1424     struct_rusage_ru_maxrss
1425     struct_sockaddr_in6
1426     struct_sockaddr_sa_len
1427     struct_sockaddr_storage
1428     struct_v4l2_frmivalenum_discrete
1429     symver_asm_label
1430     symver_gnu_asm
1431     sync_val_compare_and_swap
1432     sysconf
1433     sysctl
1434     sys_mman_h
1435     sys_param_h
1436     sys_resource_h
1437     sys_select_h
1438     sys_soundcard_h
1439     sys_time_h
1440     sys_un_h
1441     sys_videoio_h
1442     threads
1443     unistd_h
1444     usleep
1445     vdpau_x11
1446     vfp_args
1447     VirtualAlloc
1448     windows_h
1449     winsock2_h
1450     xform_asm
1451     xlib
1452     xmm_clobbers
1453 "
1454
1455 # options emitted with CONFIG_ prefix but not available on the command line
1456 CONFIG_EXTRA="
1457     aandcttables
1458     ac3dsp
1459     audio_frame_queue
1460     dsputil
1461     gcrypt
1462     golomb
1463     gplv3
1464     h263dsp
1465     h264chroma
1466     h264dsp
1467     h264pred
1468     h264qpel
1469     hpeldsp
1470     huffman
1471     intrax8
1472     lgplv3
1473     lpc
1474     mpegaudio
1475     mpegaudiodsp
1476     mpegvideo
1477     mpegvideoenc
1478     nettle
1479     rangecoder
1480     riffdec
1481     riffenc
1482     rtpdec
1483     rtpenc_chain
1484     sinewin
1485     videodsp
1486     vp3dsp
1487 "
1488
1489 CMDLINE_SELECT="
1490     $ARCH_EXT_LIST
1491     $CONFIG_LIST
1492     $HAVE_LIST_CMDLINE
1493     $THREADS_LIST
1494     asm
1495     cross_compile
1496     debug
1497     extra_warnings
1498     logging
1499     lto
1500     optimizations
1501 "
1502
1503 PATHS_LIST='
1504     bindir
1505     datadir
1506     docdir
1507     incdir
1508     libdir
1509     mandir
1510     prefix
1511     shlibdir
1512 '
1513
1514 CMDLINE_SET="
1515     $PATHS_LIST
1516     ar
1517     arch
1518     as
1519     build_suffix
1520     cc
1521     cpu
1522     cross_prefix
1523     dep_cc
1524     extra_version
1525     host_cc
1526     host_cflags
1527     host_ld
1528     host_ldflags
1529     host_libs
1530     host_os
1531     ld
1532     logfile
1533     malloc_prefix
1534     nm
1535     optflags
1536     pkg_config
1537     random_seed
1538     samples
1539     sysinclude
1540     sysroot
1541     target_exec
1542     target_os
1543     target_path
1544     target_samples
1545     toolchain
1546 "
1547
1548 CMDLINE_APPEND="
1549     extra_cflags
1550     host_cppflags
1551 "
1552
1553 # code dependency declarations
1554
1555 # architecture extensions
1556
1557 armv5te_deps="arm"
1558 armv6_deps="arm"
1559 armv6t2_deps="arm"
1560 neon_deps_any="aarch64 arm"
1561 vfp_deps_any="aarch64 arm"
1562 vfpv3_deps="vfp"
1563
1564 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1565
1566 altivec_deps="ppc"
1567 ppc4xx_deps="ppc"
1568
1569 vis_deps="sparc"
1570
1571 cpunop_deps="i686"
1572 x86_64_select="i686"
1573 x86_64_suggest="fast_cmov"
1574
1575 amd3dnow_deps="mmx"
1576 amd3dnowext_deps="amd3dnow"
1577 i686_deps="x86"
1578 mmx_deps="x86"
1579 mmxext_deps="mmx"
1580 sse_deps="mmxext"
1581 sse2_deps="sse"
1582 sse3_deps="sse2"
1583 ssse3_deps="sse3"
1584 sse4_deps="ssse3"
1585 sse42_deps="sse4"
1586 avx_deps="sse42"
1587 xop_deps="avx"
1588 fma3_deps="avx"
1589 fma4_deps="avx"
1590 avx2_deps="avx"
1591
1592 mmx_external_deps="yasm"
1593 mmx_inline_deps="inline_asm"
1594 mmx_suggest="mmx_external mmx_inline"
1595
1596 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1597     eval dep=\$${ext}_deps
1598     eval ${ext}_external_deps='"${dep}_external"'
1599     eval ${ext}_inline_deps='"${dep}_inline"'
1600     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1601 done
1602
1603 aligned_stack_if_any="aarch64 ppc x86"
1604 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1605 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1606 fast_unaligned_if_any="aarch64 ppc x86"
1607
1608 need_memalign="altivec neon sse"
1609
1610 # system capabilities
1611 log2_deps="!libc_msvcrt"
1612
1613 symver_if_any="symver_asm_label symver_gnu_asm"
1614
1615 # threading support
1616 atomics_gcc_if="sync_val_compare_and_swap"
1617 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1618 atomics_win32_if="MemoryBarrier"
1619 atomics_native_if_any="$ATOMICS_LIST"
1620 w32threads_deps="atomics_native"
1621 threads_if_any="$THREADS_LIST"
1622
1623 # subsystems
1624 dct_select="rdft"
1625 error_resilience_select="dsputil"
1626 lpc_select="dsputil"
1627 mdct_select="fft"
1628 rdft_select="fft"
1629 mpegaudio_select="mpegaudiodsp"
1630 mpegaudiodsp_select="dct"
1631 mpegvideo_select="dsputil hpeldsp videodsp"
1632 mpegvideoenc_select="mpegvideo"
1633
1634 # decoders / encoders
1635 aac_decoder_select="mdct sinewin"
1636 aac_encoder_select="audio_frame_queue mdct sinewin"
1637 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1638 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1639 ac3_encoder_select="mdct ac3dsp dsputil"
1640 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1641 aic_decoder_select="dsputil golomb"
1642 alac_encoder_select="lpc"
1643 als_decoder_select="dsputil"
1644 amrnb_decoder_select="lsp"
1645 amrwb_decoder_select="lsp"
1646 amv_decoder_select="sp5x_decoder"
1647 ape_decoder_select="dsputil"
1648 asv1_decoder_select="dsputil"
1649 asv1_encoder_select="dsputil"
1650 asv2_decoder_select="dsputil"
1651 asv2_encoder_select="dsputil"
1652 atrac1_decoder_select="mdct sinewin"
1653 atrac3_decoder_select="mdct"
1654 atrac3p_decoder_select="mdct sinewin"
1655 bink_decoder_select="dsputil hpeldsp"
1656 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1657 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1658 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1659 cllc_decoder_select="dsputil"
1660 comfortnoise_encoder_select="lpc"
1661 cook_decoder_select="dsputil mdct sinewin"
1662 cscd_decoder_select="lzo"
1663 cscd_decoder_suggest="zlib"
1664 dca_decoder_select="mdct"
1665 dnxhd_decoder_select="dsputil"
1666 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1667 dvvideo_decoder_select="dsputil"
1668 dvvideo_encoder_select="dsputil"
1669 dxa_decoder_deps="zlib"
1670 eac3_decoder_select="ac3_decoder"
1671 eac3_encoder_select="ac3_encoder"
1672 eamad_decoder_select="aandcttables dsputil mpegvideo"
1673 eatgq_decoder_select="aandcttables dsputil"
1674 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1675 ffv1_decoder_select="dsputil golomb rangecoder"
1676 ffv1_encoder_select="dsputil rangecoder"
1677 ffvhuff_decoder_select="huffyuv_decoder"
1678 ffvhuff_encoder_select="huffyuv_encoder"
1679 fic_decoder_select="dsputil golomb"
1680 flac_decoder_select="golomb"
1681 flac_encoder_select="dsputil golomb lpc"
1682 flashsv_decoder_deps="zlib"
1683 flashsv_encoder_deps="zlib"
1684 flashsv2_decoder_deps="zlib"
1685 flv_decoder_select="h263_decoder"
1686 flv_encoder_select="h263_encoder"
1687 fourxm_decoder_select="dsputil"
1688 fraps_decoder_select="dsputil huffman"
1689 g2m_decoder_deps="zlib"
1690 g2m_decoder_select="dsputil"
1691 h261_decoder_select="error_resilience mpegvideo"
1692 h261_encoder_select="aandcttables mpegvideoenc"
1693 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo"
1694 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1695 h263i_decoder_select="h263_decoder"
1696 h263p_encoder_select="h263_encoder"
1697 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1698 h264_decoder_suggest="error_resilience"
1699 hevc_decoder_select="dsputil golomb videodsp"
1700 huffyuv_decoder_select="dsputil"
1701 huffyuv_encoder_select="dsputil huffman"
1702 iac_decoder_select="imc_decoder"
1703 imc_decoder_select="dsputil fft mdct sinewin"
1704 indeo3_decoder_select="hpeldsp"
1705 interplay_video_decoder_select="hpeldsp"
1706 jpegls_decoder_select="golomb mjpeg_decoder"
1707 jpegls_encoder_select="golomb"
1708 jv_decoder_select="dsputil"
1709 lagarith_decoder_select="dsputil"
1710 ljpeg_encoder_select="aandcttables mpegvideoenc"
1711 loco_decoder_select="golomb"
1712 mdec_decoder_select="dsputil error_resilience mpegvideo"
1713 metasound_decoder_select="lsp mdct sinewin"
1714 mimic_decoder_select="dsputil hpeldsp"
1715 mjpeg_decoder_select="dsputil hpeldsp"
1716 mjpegb_decoder_select="mjpeg_decoder"
1717 mjpeg_encoder_select="aandcttables dsputil mpegvideoenc"
1718 mlp_decoder_select="dsputil mlp_parser"
1719 motionpixels_decoder_select="dsputil"
1720 mp1_decoder_select="mpegaudio"
1721 mp1float_decoder_select="mpegaudio"
1722 mp2_decoder_select="mpegaudio"
1723 mp2float_decoder_select="mpegaudio"
1724 mp3_decoder_select="mpegaudio"
1725 mp3adu_decoder_select="mpegaudio"
1726 mp3adufloat_decoder_select="mpegaudio"
1727 mp3float_decoder_select="mpegaudio"
1728 mp3on4_decoder_select="mpegaudio"
1729 mp3on4float_decoder_select="mpegaudio"
1730 mpc7_decoder_select="dsputil mpegaudiodsp"
1731 mpc8_decoder_select="dsputil mpegaudiodsp"
1732 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1733 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1734 mpeg1video_decoder_select="error_resilience mpegvideo"
1735 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1736 mpeg2video_decoder_select="error_resilience mpegvideo"
1737 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1738 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1739 mpeg4_encoder_select="h263_encoder"
1740 msmpeg4v1_decoder_select="h263_decoder"
1741 msmpeg4v2_decoder_select="h263_decoder"
1742 msmpeg4v2_encoder_select="h263_encoder"
1743 msmpeg4v3_decoder_select="h263_decoder"
1744 msmpeg4v3_encoder_select="h263_encoder"
1745 mss2_decoder_select="error_resilience vc1_decoder"
1746 mxpeg_decoder_select="mjpeg_decoder"
1747 nellymoser_decoder_select="mdct sinewin"
1748 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1749 nuv_decoder_select="dsputil lzo"
1750 png_decoder_deps="zlib"
1751 png_decoder_select="dsputil"
1752 png_encoder_deps="zlib"
1753 png_encoder_select="dsputil"
1754 prores_decoder_select="dsputil"
1755 prores_encoder_select="dsputil"
1756 qcelp_decoder_select="lsp"
1757 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1758 ra_144_encoder_select="audio_frame_queue lpc"
1759 ralf_decoder_select="golomb"
1760 rv10_decoder_select="error_resilience h263_decoder h263dsp"
1761 rv10_encoder_select="h263_encoder"
1762 rv20_decoder_select="error_resilience h263_decoder h263dsp"
1763 rv20_encoder_select="h263_encoder"
1764 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1765 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1766 shorten_decoder_select="golomb"
1767 sipr_decoder_select="lsp"
1768 sp5x_decoder_select="mjpeg_decoder"
1769 svq1_decoder_select="hpeldsp"
1770 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1771 svq3_decoder_select="h264_decoder hpeldsp mpegvideo"
1772 svq3_decoder_suggest="zlib"
1773 tak_decoder_select="dsputil"
1774 theora_decoder_select="vp3_decoder"
1775 tiff_decoder_suggest="zlib"
1776 tiff_encoder_suggest="zlib"
1777 thp_decoder_select="mjpeg_decoder"
1778 truehd_decoder_select="mlp_decoder"
1779 truemotion2_decoder_select="dsputil"
1780 truespeech_decoder_select="dsputil"
1781 tscc_decoder_deps="zlib"
1782 twinvq_decoder_select="mdct lsp sinewin"
1783 utvideo_decoder_select="dsputil"
1784 utvideo_encoder_select="dsputil huffman"
1785 vble_decoder_select="dsputil"
1786 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel intrax8"
1787 vc1image_decoder_select="vc1_decoder"
1788 vorbis_decoder_select="mdct"
1789 vorbis_encoder_select="mdct"
1790 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1791 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1792 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1793 vp6a_decoder_select="vp6_decoder"
1794 vp6f_decoder_select="vp6_decoder"
1795 vp8_decoder_select="h264pred videodsp"
1796 vp9_decoder_select="videodsp"
1797 webp_decoder_select="vp8_decoder"
1798 wmapro_decoder_select="mdct sinewin"
1799 wmav1_decoder_select="mdct sinewin"
1800 wmav1_encoder_select="mdct sinewin"
1801 wmav2_decoder_select="mdct sinewin"
1802 wmav2_encoder_select="mdct sinewin"
1803 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1804 wmv1_decoder_select="h263_decoder"
1805 wmv1_encoder_select="h263_encoder"
1806 wmv2_decoder_select="h263_decoder intrax8 videodsp"
1807 wmv2_encoder_select="h263_encoder"
1808 wmv3_decoder_select="vc1_decoder"
1809 wmv3image_decoder_select="wmv3_decoder"
1810 zerocodec_decoder_deps="zlib"
1811 zlib_decoder_deps="zlib"
1812 zlib_encoder_deps="zlib"
1813 zmbv_decoder_deps="zlib"
1814 zmbv_encoder_deps="zlib"
1815
1816 # hardware accelerators
1817 dxva2_deps="dxva2api_h"
1818 vaapi_deps="va_va_h"
1819 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1820 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1821 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1822
1823 h263_vaapi_hwaccel_deps="vaapi"
1824 h263_vaapi_hwaccel_select="h263_decoder"
1825 h263_vdpau_hwaccel_deps="vdpau"
1826 h263_vdpau_hwaccel_select="h263_decoder"
1827 h264_dxva2_hwaccel_deps="dxva2"
1828 h264_dxva2_hwaccel_select="h264_decoder"
1829 h264_vaapi_hwaccel_deps="vaapi"
1830 h264_vaapi_hwaccel_select="h264_decoder"
1831 h264_vda_hwaccel_deps="vda"
1832 h264_vda_hwaccel_select="h264_decoder"
1833 h264_vdpau_hwaccel_deps="vdpau"
1834 h264_vdpau_hwaccel_select="h264_decoder"
1835 mpeg1_vdpau_hwaccel_deps="vdpau"
1836 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1837 mpeg2_dxva2_hwaccel_deps="dxva2"
1838 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1839 mpeg2_vaapi_hwaccel_deps="vaapi"
1840 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1841 mpeg2_vdpau_hwaccel_deps="vdpau"
1842 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1843 mpeg4_vaapi_hwaccel_deps="vaapi"
1844 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1845 mpeg4_vdpau_hwaccel_deps="vdpau"
1846 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1847 vc1_dxva2_hwaccel_deps="dxva2"
1848 vc1_dxva2_hwaccel_select="vc1_decoder"
1849 vc1_vaapi_hwaccel_deps="vaapi"
1850 vc1_vaapi_hwaccel_select="vc1_decoder"
1851 vc1_vdpau_hwaccel_deps="vdpau"
1852 vc1_vdpau_hwaccel_select="vc1_decoder"
1853 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1854 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1855 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1856
1857 # parsers
1858 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1859 mpeg4video_parser_select="error_resilience h263dsp mpegvideo"
1860 mpegvideo_parser_select="error_resilience mpegvideo"
1861 vc1_parser_select="mpegvideo"
1862
1863 # external libraries
1864 libfaac_encoder_deps="libfaac"
1865 libfaac_encoder_select="audio_frame_queue"
1866 libfdk_aac_decoder_deps="libfdk_aac"
1867 libfdk_aac_encoder_deps="libfdk_aac"
1868 libfdk_aac_encoder_select="audio_frame_queue"
1869 libgsm_decoder_deps="libgsm"
1870 libgsm_encoder_deps="libgsm"
1871 libgsm_ms_decoder_deps="libgsm"
1872 libgsm_ms_encoder_deps="libgsm"
1873 libilbc_decoder_deps="libilbc"
1874 libilbc_encoder_deps="libilbc"
1875 libmp3lame_encoder_deps="libmp3lame"
1876 libmp3lame_encoder_select="audio_frame_queue"
1877 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1878 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1879 libopencore_amrnb_encoder_select="audio_frame_queue"
1880 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1881 libopenjpeg_decoder_deps="libopenjpeg"
1882 libopenjpeg_encoder_deps="libopenjpeg"
1883 libopus_decoder_deps="libopus"
1884 libopus_encoder_deps="libopus"
1885 libopus_encoder_select="audio_frame_queue"
1886 libschroedinger_decoder_deps="libschroedinger"
1887 libschroedinger_encoder_deps="libschroedinger"
1888 libspeex_decoder_deps="libspeex"
1889 libspeex_encoder_deps="libspeex"
1890 libspeex_encoder_select="audio_frame_queue"
1891 libtheora_encoder_deps="libtheora"
1892 libvo_aacenc_encoder_deps="libvo_aacenc"
1893 libvo_aacenc_encoder_select="audio_frame_queue"
1894 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1895 libvorbis_encoder_deps="libvorbis"
1896 libvorbis_encoder_select="audio_frame_queue"
1897 libvpx_vp8_decoder_deps="libvpx"
1898 libvpx_vp8_encoder_deps="libvpx"
1899 libvpx_vp9_decoder_deps="libvpx"
1900 libvpx_vp9_encoder_deps="libvpx"
1901 libwavpack_encoder_deps="libwavpack"
1902 libwebp_encoder_deps="libwebp"
1903 libx264_encoder_deps="libx264"
1904 libx265_encoder_deps="libx265"
1905 libxavs_encoder_deps="libxavs"
1906 libxvid_encoder_deps="libxvid"
1907
1908 # demuxers / muxers
1909 ac3_demuxer_select="ac3_parser"
1910 asf_demuxer_select="riffdec"
1911 asf_muxer_select="riffenc"
1912 asf_stream_muxer_select="asf_muxer"
1913 avi_demuxer_select="riffdec"
1914 avi_muxer_select="riffenc"
1915 avisynth_demuxer_deps="avisynth"
1916 avisynth_demuxer_select="riffdec"
1917 caf_demuxer_select="riffdec"
1918 dirac_demuxer_select="dirac_parser"
1919 dxa_demuxer_select="riffdec"
1920 eac3_demuxer_select="ac3_parser"
1921 f4v_muxer_select="mov_muxer"
1922 flac_demuxer_select="flac_parser"
1923 hds_muxer_select="flv_muxer"
1924 hls_muxer_select="mpegts_muxer"
1925 ipod_muxer_select="mov_muxer"
1926 ismv_muxer_select="mov_muxer"
1927 matroska_audio_muxer_select="matroska_muxer"
1928 matroska_demuxer_select="riffdec"
1929 matroska_demuxer_suggest="bzlib lzo zlib"
1930 matroska_muxer_select="riffenc"
1931 mmf_muxer_select="riffenc"
1932 mov_demuxer_select="riffdec"
1933 mov_demuxer_suggest="zlib"
1934 mov_muxer_select="riffenc rtpenc_chain"
1935 mp3_demuxer_select="mpegaudio_parser"
1936 mp4_muxer_select="mov_muxer"
1937 mpegts_muxer_select="adts_muxer latm_muxer"
1938 mpegtsraw_demuxer_select="mpegts_demuxer"
1939 mxf_d10_muxer_select="mxf_muxer"
1940 nut_muxer_select="riffenc"
1941 nuv_demuxer_select="riffdec"
1942 ogg_demuxer_select="golomb"
1943 psp_muxer_select="mov_muxer"
1944 rtp_demuxer_select="sdp_demuxer"
1945 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1946 rtsp_demuxer_select="http_protocol rtpdec"
1947 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
1948 sap_demuxer_select="sdp_demuxer"
1949 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
1950 sdp_demuxer_select="rtpdec"
1951 smoothstreaming_muxer_select="ismv_muxer"
1952 spdif_muxer_select="aac_parser"
1953 tak_demuxer_select="tak_parser"
1954 tg2_muxer_select="mov_muxer"
1955 tgp_muxer_select="mov_muxer"
1956 w64_demuxer_select="wav_demuxer"
1957 wav_demuxer_select="riffdec"
1958 wav_muxer_select="riffenc"
1959 webm_muxer_select="riffenc"
1960 wtv_demuxer_select="riffdec"
1961 xmv_demuxer_select="riffdec"
1962 xwma_demuxer_select="riffdec"
1963
1964 # indevs / outdevs
1965 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1966 alsa_outdev_deps="alsa_asoundlib_h"
1967 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1968 dv1394_indev_deps="dv1394"
1969 dv1394_indev_select="dv_demuxer"
1970 fbdev_indev_deps="linux_fb_h"
1971 jack_indev_deps="jack_jack_h pthreads"
1972 libcdio_indev_deps="libcdio"
1973 libdc1394_indev_deps="libdc1394"
1974 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1975 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1976 pulse_indev_deps="libpulse"
1977 sndio_indev_deps="sndio_h"
1978 sndio_outdev_deps="sndio_h"
1979 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1980 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1981 vfwcap_indev_extralibs="-lavicap32"
1982 x11grab_indev_deps="x11grab XShmCreateImage"
1983
1984 # protocols
1985 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
1986 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
1987 ffrtmpcrypt_protocol_select="tcp_protocol"
1988 ffrtmphttp_protocol_deps="!librtmp_protocol"
1989 ffrtmphttp_protocol_select="http_protocol"
1990 gopher_protocol_select="network"
1991 httpproxy_protocol_select="tcp_protocol"
1992 http_protocol_select="tcp_protocol"
1993 https_protocol_select="tls_protocol"
1994 librtmp_protocol_deps="librtmp"
1995 librtmpe_protocol_deps="librtmp"
1996 librtmps_protocol_deps="librtmp"
1997 librtmpt_protocol_deps="librtmp"
1998 librtmpte_protocol_deps="librtmp"
1999 mmsh_protocol_select="http_protocol"
2000 mmst_protocol_select="network"
2001 rtmp_protocol_deps="!librtmp_protocol"
2002 rtmp_protocol_select="tcp_protocol"
2003 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2004 rtmps_protocol_deps="!librtmp_protocol"
2005 rtmps_protocol_select="tls_protocol"
2006 rtmpt_protocol_select="ffrtmphttp_protocol"
2007 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2008 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2009 rtp_protocol_select="udp_protocol"
2010 sctp_protocol_deps="struct_sctp_event_subscribe"
2011 sctp_protocol_select="network"
2012 srtp_protocol_select="rtp_protocol"
2013 tcp_protocol_select="network"
2014 tls_protocol_deps_any="openssl gnutls"
2015 tls_protocol_select="tcp_protocol"
2016 udp_protocol_select="network"
2017 unix_protocol_deps="sys_un_h"
2018 unix_protocol_select="network"
2019
2020 # filters
2021 blackframe_filter_deps="gpl"
2022 boxblur_filter_deps="gpl"
2023 cropdetect_filter_deps="gpl"
2024 delogo_filter_deps="gpl"
2025 drawtext_filter_deps="libfreetype"
2026 frei0r_filter_deps="frei0r dlopen"
2027 frei0r_filter_extralibs='$ldl'
2028 frei0r_src_filter_deps="frei0r dlopen"
2029 frei0r_src_filter_extralibs='$ldl'
2030 hqdn3d_filter_deps="gpl"
2031 interlace_filter_deps="gpl"
2032 resample_filter_deps="avresample"
2033 ocv_filter_deps="libopencv"
2034 scale_filter_deps="swscale"
2035
2036 # examples
2037 avcodec_example_deps="avcodec avutil"
2038 filter_audio_example_deps="avfilter avutil"
2039 metadata_example_deps="avformat avutil"
2040 output_example_deps="avcodec avformat avutil swscale"
2041 transcode_aac_example_deps="avcodec avformat avresample"
2042
2043 # libraries
2044 avcodec_deps="avutil"
2045 avdevice_deps="avutil avcodec avformat"
2046 avfilter_deps="avutil"
2047 avformat_deps="avutil avcodec"
2048 avresample_deps="avutil"
2049 swscale_deps="avutil"
2050
2051 # programs
2052 avconv_deps="avcodec avfilter avformat avresample swscale"
2053 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2054                fps_filter null_filter resample_filter scale_filter
2055                setpts_filter trim_filter"
2056 avplay_deps="avcodec avformat avresample swscale sdl"
2057 avplay_libs='$sdl_libs'
2058 avplay_select="rdft"
2059 avprobe_deps="avcodec avformat"
2060 avserver_deps="avformat fork !shared"
2061 avserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2062
2063 # documentation
2064 pod2man_deps="doc"
2065 texi2html_deps="doc"
2066
2067 # default parameters
2068
2069 logfile="config.log"
2070
2071 # installation paths
2072 prefix_default="/usr/local"
2073 bindir_default='${prefix}/bin'
2074 datadir_default='${prefix}/share/avconv'
2075 docdir_default='${prefix}/share/doc/libav'
2076 incdir_default='${prefix}/include'
2077 libdir_default='${prefix}/lib'
2078 mandir_default='${prefix}/share/man'
2079 shlibdir_default="$libdir_default"
2080
2081 # toolchain
2082 ar_default="ar"
2083 cc_default="gcc"
2084 host_cc_default="gcc"
2085 cp_f="cp -f"
2086 ln_s="ln -s -f"
2087 nm_default="nm -g"
2088 objformat="elf"
2089 pkg_config_default=pkg-config
2090 ranlib="ranlib"
2091 strip="strip"
2092 yasmexe="yasm"
2093
2094 nogas=":"
2095
2096 # machine
2097 arch_default=$(uname -m)
2098 cpu="generic"
2099
2100 # OS
2101 target_os_default=$(tolower $(uname -s))
2102 host_os=$target_os_default
2103
2104 # configurable options
2105 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2106
2107 enable asm
2108 enable debug
2109 enable doc
2110 enable optimizations
2111 enable safe_bitstream_reader
2112 enable static
2113 enable swscale_alpha
2114
2115 # By default, enable only those hwaccels that have no external dependencies.
2116 enable dxva2 vdpau
2117
2118 # build settings
2119 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2120 LIBPREF="lib"
2121 LIBSUF=".a"
2122 FULLNAME='$(NAME)$(BUILDSUF)'
2123 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2124 SLIBPREF="lib"
2125 SLIBSUF=".so"
2126 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2127 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2128 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2129 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2130 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2131 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2132
2133 asflags_filter=echo
2134 cflags_filter=echo
2135 ldflags_filter=echo
2136
2137 AS_C='-c'
2138 AS_O='-o $@'
2139 CC_C='-c'
2140 CC_E='-E -o $@'
2141 CC_O='-o $@'
2142 LD_O='-o $@'
2143 LD_LIB='-l%'
2144 LD_PATH='-L'
2145 HOSTCC_C='-c'
2146 HOSTCC_E='-E -o $@'
2147 HOSTCC_O='-o $@'
2148 HOSTLD_O='-o $@'
2149
2150 host_libs='-lm'
2151 host_cflags_filter=echo
2152 host_ldflags_filter=echo
2153
2154 target_path='$(CURDIR)'
2155
2156 # since the object filename is not given with the -MM flag, the compiler
2157 # is only able to print the basename, and we must add the path ourselves
2158 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2159 DEPFLAGS='-MM'
2160
2161 # find source path
2162 if test -f configure; then
2163     source_path=.
2164 else
2165     source_path=$(cd $(dirname "$0"); pwd)
2166     echo "$source_path" | grep -q '[[:blank:]]' &&
2167         die "Out of tree builds are impossible with whitespace in source path."
2168     test -e "$source_path/config.h" &&
2169         die "Out of tree builds are impossible with config.h in source dir."
2170 fi
2171
2172 for v in "$@"; do
2173     r=${v#*=}
2174     l=${v%"$r"}
2175     r=$(sh_quote "$r")
2176     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2177 done
2178
2179 find_things(){
2180     thing=$1
2181     pattern=$2
2182     file=$source_path/$3
2183     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2184 }
2185
2186 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2187 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2188 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2189 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2190 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2191 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2192 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2193 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2194 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2195 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2196 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2197
2198 ALL_COMPONENTS="
2199     $BSF_LIST
2200     $DECODER_LIST
2201     $DEMUXER_LIST
2202     $ENCODER_LIST
2203     $FILTER_LIST
2204     $HWACCEL_LIST
2205     $INDEV_LIST
2206     $MUXER_LIST
2207     $OUTDEV_LIST
2208     $PARSER_LIST
2209     $PROTOCOL_LIST
2210 "
2211
2212 for n in $COMPONENT_LIST; do
2213     v=$(toupper ${n%s})_LIST
2214     eval enable \$$v
2215     eval ${n}_if_any="\$$v"
2216 done
2217
2218 enable $ARCH_EXT_LIST
2219
2220 die_unknown(){
2221     echo "Unknown option \"$1\"."
2222     echo "See $0 --help for available options."
2223     exit 1
2224 }
2225
2226 print_3_columns() {
2227     cat | tr ' ' '\n' | sort | pr -r -3 -t
2228 }
2229
2230 show_list() {
2231     suffix=_$1
2232     shift
2233     echo $* | sed s/$suffix//g | print_3_columns
2234     exit 0
2235 }
2236
2237 rand_list(){
2238     IFS=', '
2239     set -- $*
2240     unset IFS
2241     for thing; do
2242         comp=${thing%:*}
2243         prob=${thing#$comp}
2244         prob=${prob#:}
2245         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2246         echo "prob ${prob:-0.5}"
2247         printf '%s\n' $comp
2248     done
2249 }
2250
2251 do_random(){
2252     action=$1
2253     shift
2254     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2255     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2256 }
2257
2258 for opt do
2259     optval="${opt#*=}"
2260     case "$opt" in
2261         --extra-ldflags=*)
2262             add_ldflags $optval
2263         ;;
2264         --extra-libs=*)
2265             add_extralibs $optval
2266         ;;
2267         --disable-devices)
2268             disable $INDEV_LIST $OUTDEV_LIST
2269         ;;
2270         --enable-debug=*)
2271             debuglevel="$optval"
2272         ;;
2273         --disable-programs)
2274             disable $PROGRAM_LIST
2275         ;;
2276         --disable-everything)
2277             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2278         ;;
2279         --disable-all)
2280             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2281             disable $LIBRARY_LIST $PROGRAM_LIST doc
2282         ;;
2283         --enable-random|--disable-random)
2284             action=${opt%%-random}
2285             do_random ${action#--} $COMPONENT_LIST
2286         ;;
2287         --enable-random=*|--disable-random=*)
2288             action=${opt%%-random=*}
2289             do_random ${action#--} $optval
2290         ;;
2291         --enable-*=*|--disable-*=*)
2292             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2293             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2294             eval list=\$$(toupper $thing)_LIST
2295             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2296             $action $(filter "$name" $list)
2297         ;;
2298         --enable-?*|--disable-?*)
2299             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2300             if is_in $option $COMPONENT_LIST; then
2301                 test $action = disable && action=unset
2302                 eval $action \$$(toupper ${option%s})_LIST
2303             elif is_in $option $CMDLINE_SELECT; then
2304                 $action $option
2305             else
2306                 die_unknown $opt
2307             fi
2308         ;;
2309         --list-*)
2310             NAME="${opt#--list-}"
2311             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2312             NAME=${NAME%s}
2313             eval show_list $NAME \$$(toupper $NAME)_LIST
2314         ;;
2315         --help|-h) show_help
2316         ;;
2317         *)
2318             optname="${opt%%=*}"
2319             optname="${optname#--}"
2320             optname=$(echo "$optname" | sed 's/-/_/g')
2321             if is_in $optname $CMDLINE_SET; then
2322                 eval $optname='$optval'
2323             elif is_in $optname $CMDLINE_APPEND; then
2324                 append $optname "$optval"
2325             else
2326                 die_unknown $opt
2327             fi
2328         ;;
2329     esac
2330 done
2331
2332 disabled logging && logfile=/dev/null
2333
2334 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2335 set >> $logfile
2336
2337 test -n "$cross_prefix" && enable cross_compile
2338
2339 if enabled cross_compile; then
2340     test -n "$arch" && test -n "$target_os" ||
2341         die "Must specify target arch and OS when cross-compiling"
2342 fi
2343
2344 ar_default="${cross_prefix}${ar_default}"
2345 cc_default="${cross_prefix}${cc_default}"
2346 nm_default="${cross_prefix}${nm_default}"
2347 pkg_config_default="${cross_prefix}${pkg_config_default}"
2348 ranlib="${cross_prefix}${ranlib}"
2349 strip="${cross_prefix}${strip}"
2350
2351 sysinclude_default="${sysroot}/usr/include"
2352
2353 case "$toolchain" in
2354     clang-asan)
2355         cc_default="clang"
2356         add_cflags  -fsanitize=address
2357         add_ldflags -fsanitize=address
2358     ;;
2359     clang-tsan)
2360         cc_default="clang"
2361         add_cflags  -fsanitize=thread -pie
2362         add_ldflags -fsanitize=thread -pie
2363     ;;
2364     clang-usan)
2365         cc_default="clang"
2366         add_cflags  -fsanitize=undefined
2367         add_ldflags -fsanitize=undefined
2368     ;;
2369     gcc-asan)
2370         cc_default="gcc"
2371         add_cflags  -fsanitize=address
2372         add_ldflags -fsanitize=address
2373     ;;
2374     gcc-tsan)
2375         cc_default="gcc"
2376         add_cflags  -fsanitize=thread -pie -fPIC
2377         add_ldflags -fsanitize=thread -pie -fPIC
2378     ;;
2379     gcc-usan)
2380         cc_default="gcc"
2381         add_cflags  -fsanitize=undefined
2382         add_ldflags -fsanitize=undefined
2383     ;;
2384     valgrind-massif)
2385         target_exec_default="valgrind"
2386         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2387     ;;
2388     valgrind-memcheck)
2389         target_exec_default="valgrind"
2390         target_exec_args="--track-origins=yes --leak-check=full"
2391     ;;
2392     msvc)
2393         # Check whether the current MSVC version needs the C99 converter.
2394         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2395         # support enough of C99 to build libav. Default to the new
2396         # behaviour if the regexp was unable to match anything, since this
2397         # successfully parses the version number of existing supported
2398         # versions that require the converter (MSVC 2010 and 2012).
2399         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2400         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2401             cc_default="cl"
2402         else
2403             cc_default="c99wrap cl"
2404         fi
2405         ld_default="link"
2406         nm_default="dumpbin -symbols"
2407         ar_default="lib"
2408         target_os_default="win32"
2409         # Use a relative path for TMPDIR. This makes sure all the
2410         # ffconf temp files are written with a relative path, avoiding
2411         # issues with msys/win32 path conversion for MSVC parameters
2412         # such as -Fo<file> or -out:<file>.
2413         TMPDIR=.
2414     ;;
2415     icl)
2416         cc_default="icl"
2417         ld_default="xilink"
2418         nm_default="dumpbin -symbols"
2419         ar_default="xilib"
2420         target_os_default="win32"
2421         TMPDIR=.
2422     ;;
2423     gcov)
2424         add_cflags  -fprofile-arcs -ftest-coverage
2425         add_ldflags -fprofile-arcs -ftest-coverage
2426     ;;
2427     hardened)
2428         add_cflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2429         add_ldflags -Wl,-z,relro -Wl,-z,now
2430     ;;
2431     ?*)
2432         die "Unknown toolchain $toolchain"
2433     ;;
2434 esac
2435
2436 set_default arch cc pkg_config sysinclude target_exec target_os
2437 enabled cross_compile || host_cc_default=$cc
2438 set_default host_cc
2439
2440 if ! $pkg_config --version >/dev/null 2>&1; then
2441     warn "$pkg_config not found, library detection may fail."
2442     pkg_config=false
2443 fi
2444
2445 exesuf() {
2446     case $1 in
2447         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2448     esac
2449 }
2450
2451 EXESUF=$(exesuf $target_os)
2452 HOSTEXESUF=$(exesuf $host_os)
2453
2454 # set temporary file name
2455 : ${TMPDIR:=$TEMPDIR}
2456 : ${TMPDIR:=$TMP}
2457 : ${TMPDIR:=/tmp}
2458
2459 if ! check_cmd mktemp -u XXXXXX; then
2460     # simple replacement for missing mktemp
2461     # NOT SAFE FOR GENERAL USE
2462     mktemp(){
2463         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2464     }
2465 fi
2466
2467 tmpfile(){
2468     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2469         (set -C; exec > $tmp) 2>/dev/null ||
2470         die "Unable to create temporary file in $TMPDIR."
2471     append TMPFILES $tmp
2472     eval $1=$tmp
2473 }
2474
2475 trap 'rm -f -- $TMPFILES' EXIT
2476
2477 tmpfile TMPASM .asm
2478 tmpfile TMPC   .c
2479 tmpfile TMPE   $EXESUF
2480 tmpfile TMPH   .h
2481 tmpfile TMPO   .o
2482 tmpfile TMPS   .S
2483 tmpfile TMPSH  .sh
2484 tmpfile TMPV   .ver
2485
2486 unset -f mktemp
2487
2488 chmod +x $TMPE
2489
2490 # make sure we can execute files in $TMPDIR
2491 cat > $TMPSH 2>> $logfile <<EOF
2492 #! /bin/sh
2493 EOF
2494 chmod +x $TMPSH >> $logfile 2>&1
2495 if ! $TMPSH >> $logfile 2>&1; then
2496     cat <<EOF
2497 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2498 variable to another directory and make sure that it is not mounted noexec.
2499 EOF
2500     die "Sanity test failed."
2501 fi
2502
2503 ccc_flags(){
2504     for flag; do
2505         case $flag in
2506             -std=c99)           echo -c99                       ;;
2507             -mcpu=*)            echo -arch ${flag#*=}           ;;
2508             -mieee)             echo -ieee                      ;;
2509             -O*|-fast)          echo $flag                      ;;
2510             -fno-math-errno)    echo -assume nomath_errno       ;;
2511             -g)                 echo -g3                        ;;
2512             -Wall)              echo -msg_enable level2         ;;
2513             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2514             -Wl,*)              echo $flag                      ;;
2515             -f*|-W*)                                            ;;
2516             *)                  echo $flag                      ;;
2517         esac
2518    done
2519 }
2520
2521 cparser_flags(){
2522     for flag; do
2523         case $flag in
2524             -Wno-switch)             echo -Wno-switch-enum ;;
2525             -Wno-format-zero-length) ;;
2526             -Wdisabled-optimization) ;;
2527             -Wno-pointer-sign)       echo -Wno-other ;;
2528             *)                       echo $flag ;;
2529         esac
2530     done
2531 }
2532
2533 msvc_common_flags(){
2534     for flag; do
2535         case $flag in
2536             # In addition to specifying certain flags under the compiler
2537             # specific filters, they must be specified here as well or else the
2538             # generic catch all at the bottom will print the original flag.
2539             -Wall)                ;;
2540             -std=c99)             ;;
2541             # Common flags
2542             -fomit-frame-pointer) ;;
2543             -g)                   echo -Z7 ;;
2544             -fno-math-errno)      ;;
2545             -fno-common)          ;;
2546             -fno-signed-zeros)    ;;
2547             -fPIC)                ;;
2548             -mthumb)              ;;
2549             -march=*)             ;;
2550             -lz)                  echo zlib.lib ;;
2551             -lavifil32)           echo vfw32.lib ;;
2552             -lavicap32)           echo vfw32.lib user32.lib ;;
2553             -l*)                  echo ${flag#-l}.lib ;;
2554             *)                    echo $flag ;;
2555         esac
2556     done
2557 }
2558
2559 msvc_flags(){
2560     msvc_common_flags "$@"
2561     for flag; do
2562         case $flag in
2563             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2564                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2565                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2566                                        -wd4273 ;;
2567         esac
2568     done
2569 }
2570
2571 icl_flags(){
2572     msvc_common_flags "$@"
2573     for flag; do
2574         case $flag in
2575             # Despite what Intel's documentation says -Wall, which is supported
2576             # on Windows, does enable remarks so disable them here.
2577             -Wall)                echo $flag -Qdiag-disable:remark ;;
2578             -std=c99)             echo -Qstd=c99 ;;
2579         esac
2580     done
2581 }
2582
2583 pgi_flags(){
2584     for flag; do
2585         case $flag in
2586             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2587             -fomit-frame-pointer) echo -Mnoframe ;;
2588             -g)                   echo -gopt ;;
2589             *)                    echo $flag ;;
2590         esac
2591     done
2592 }
2593
2594 suncc_flags(){
2595     for flag; do
2596         case $flag in
2597             -march=*|-mcpu=*)
2598                 case "${flag#*=}" in
2599                     native)                   echo -xtarget=native       ;;
2600                     v9|niagara)               echo -xarch=sparc          ;;
2601                     ultrasparc)               echo -xarch=sparcvis       ;;
2602                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2603                     i586|pentium)             echo -xchip=pentium        ;;
2604                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2605                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2606                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2607                     pentium4*)          echo -xtarget=pentium4           ;;
2608                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2609                     *-sse3)             echo -xarch=sse3                 ;;
2610                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2611                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2612                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2613                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2614                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2615                     k8|opteron|athlon64|athlon-fx)
2616                                                echo -xarch=sse2a         ;;
2617                     athlon*)                   echo -xarch=pentium_proa  ;;
2618                 esac
2619                 ;;
2620             -std=c99)             echo -xc99              ;;
2621             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2622             -fPIC)                echo -KPIC -xcode=pic32 ;;
2623             -W*,*)                echo $flag              ;;
2624             -f*-*|-W*|-mimpure-text)                      ;;
2625             -shared)              echo -G                 ;;
2626             *)                    echo $flag              ;;
2627         esac
2628     done
2629 }
2630
2631 tms470_flags(){
2632     for flag; do
2633         case $flag in
2634             -march=*|-mcpu=*)
2635                 case "${flag#*=}" in
2636                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2637                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2638                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2639                     armv6*|arm11*)          echo -mv=6   ;;
2640                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2641                                             echo -mv=5e  ;;
2642                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2643                 esac
2644                 ;;
2645             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2646             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2647             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2648             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2649             -msoft-float)   echo --float_support=vfplib       ;;
2650             -O[0-3]|-mf=*)  echo $flag                        ;;
2651             -g)             echo -g -mn                       ;;
2652             -pds=*)         echo $flag                        ;;
2653             -D*|-I*)        echo $flag                        ;;
2654             --gcc|--abi=*)  echo $flag                        ;;
2655             -me)            echo $flag                        ;;
2656         esac
2657     done
2658 }
2659
2660 probe_cc(){
2661     pfx=$1
2662     _cc=$2
2663
2664     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2665     unset _ld_o _ldflags _ld_lib _ld_path
2666     unset _depflags _DEPCMD _DEPFLAGS
2667     _flags_filter=echo
2668
2669     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2670         _type=llvm_gcc
2671         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2672         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2673         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2674         _cflags_speed='-O3'
2675         _cflags_size='-Os'
2676     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2677         _type=gcc
2678         gcc_version=$($_cc --version | head -n1)
2679         gcc_basever=$($_cc -dumpversion)
2680         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2681         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2682         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2683         if ! $_cc -dumpversion | grep -q '^2\.'; then
2684             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2685         fi
2686         _cflags_speed='-O3'
2687         _cflags_size='-Os'
2688     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2689         _type=icc
2690         _ident=$($_cc --version | head -n1)
2691         _depflags='-MMD'
2692         _cflags_speed='-O3'
2693         _cflags_size='-Os'
2694         _cflags_noopt='-O1'
2695     elif $_cc -v 2>&1 | grep -q xlc; then
2696         _type=xlc
2697         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2698         _cflags_speed='-O5'
2699         _cflags_size='-O5 -qcompact'
2700     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2701         _type=ccc
2702         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2703         _DEPFLAGS='-M'
2704         _cflags_speed='-fast'
2705         _cflags_size='-O1'
2706         _flags_filter=ccc_flags
2707     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2708         test -d "$sysroot" || die "No valid sysroot specified."
2709         _type=armcc
2710         _ident=$($_cc --vsn | head -n1)
2711         armcc_conf="$PWD/armcc.conf"
2712         $_cc --arm_linux_configure                 \
2713              --arm_linux_config_file="$armcc_conf" \
2714              --configure_sysroot="$sysroot"        \
2715              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2716              die "Error creating armcc configuration file."
2717         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2718         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2719         as_default="${cross_prefix}gcc"
2720         _depflags='-MMD'
2721         _cflags_speed='-O3'
2722         _cflags_size='-Os'
2723     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2724         _type=tms470
2725         _ident=$($_cc -version | head -n1 | tr -s ' ')
2726         _flags='--gcc --abi=eabi -me'
2727         _cc_e='-ppl -fe=$@'
2728         _cc_o='-fe=$@'
2729         _depflags='-ppa -ppd=$(@:.o=.d)'
2730         _cflags_speed='-O3 -mf=5'
2731         _cflags_size='-O3 -mf=2'
2732         _flags_filter=tms470_flags
2733     elif $_cc -v 2>&1 | grep -q clang; then
2734         _type=clang
2735         _ident=$($_cc --version | head -n1)
2736         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2737         _cflags_speed='-O3'
2738         _cflags_size='-Os'
2739     elif $_cc -V 2>&1 | grep -q Sun; then
2740         _type=suncc
2741         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2742         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2743         _DEPFLAGS='-xM1 -xc99'
2744         _ldflags='-std=c99'
2745         _cflags_speed='-O5'
2746         _cflags_size='-O5 -xspace'
2747         _flags_filter=suncc_flags
2748     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2749         _type=pathscale
2750         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2751         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2752         _cflags_speed='-O2'
2753         _cflags_size='-Os'
2754         _flags_filter='filter_out -Wdisabled-optimization'
2755     elif $_cc -v 2>&1 | grep -q Open64; then
2756         _type=open64
2757         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2758         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2759         _cflags_speed='-O2'
2760         _cflags_size='-Os'
2761         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2762     elif $_cc -V 2>&1 | grep -q Portland; then
2763         _type=pgi
2764         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2765         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2766         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2767         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2768         _cflags_noopt="-O1"
2769         _flags_filter=pgi_flags
2770     elif $_cc 2>&1 | grep -q Microsoft; then
2771         _type=msvc
2772         _ident=$($cc 2>&1 | head -n1)
2773         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2774         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2775         _cflags_speed="-O2"
2776         _cflags_size="-O1"
2777         if $_cc 2>&1 | grep -q Linker; then
2778             _ld_o='-out:$@'
2779         else
2780             _ld_o='-Fe$@'
2781         fi
2782         _cc_o='-Fo$@'
2783         _cc_e='-P -Fi$@'
2784         _flags_filter=msvc_flags
2785         _ld_lib='lib%.a'
2786         _ld_path='-libpath:'
2787         _flags='-nologo'
2788         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2789         if [ $pfx = hostcc ]; then
2790             append _cflags -Dsnprintf=_snprintf
2791         fi
2792     elif $_cc 2>&1 | grep -q Intel; then
2793         _type=icl
2794         _ident=$($cc 2>&1 | head -n1)
2795         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2796         # Not only is O3 broken on 13.x+ but it is slower on all previous
2797         # versions (tested) as well.
2798         _cflags_speed="-O2"
2799         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2800         if $_cc 2>&1 | grep -q Linker; then
2801             _ld_o='-out:$@'
2802         else
2803             _ld_o='-Fe$@'
2804         fi
2805         _cc_o='-Fo$@'
2806         _cc_e='-P'
2807         _flags_filter=icl_flags
2808         _ld_lib='lib%.a'
2809         _ld_path='-libpath:'
2810         # -Qdiag-error to make icl error when seeing certain unknown arguments
2811         _flags='-nologo -Qdiag-error:4044,10157'
2812         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2813         # with MSVC which enables it by default.
2814         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2815         if [ $pfx = hostcc ]; then
2816             append _cflags -Dsnprintf=_snprintf
2817         fi
2818     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
2819         _type=cparser
2820         _ident=$($_cc --version | head -n1)
2821         _depflags='-MMD'
2822         _cflags_speed='-O4'
2823         _cflags_size='-O2'
2824         _flags_filter=cparser_flags
2825     fi
2826
2827     eval ${pfx}_type=\$_type
2828     eval ${pfx}_ident=\$_ident
2829 }
2830
2831 set_ccvars(){
2832     eval ${1}_C=\${_cc_c-\${${1}_C}}
2833     eval ${1}_E=\${_cc_e-\${${1}_E}}
2834     eval ${1}_O=\${_cc_o-\${${1}_O}}
2835
2836     if [ -n "$_depflags" ]; then
2837         eval ${1}_DEPFLAGS=\$_depflags
2838     else
2839         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2840         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2841         eval DEP${1}FLAGS=\$_flags
2842     fi
2843 }
2844
2845 probe_cc cc "$cc"
2846 cflags_filter=$_flags_filter
2847 cflags_speed=$_cflags_speed
2848 cflags_size=$_cflags_size
2849 cflags_noopt=$_cflags_noopt
2850 add_cflags $_flags $_cflags
2851 cc_ldflags=$_ldflags
2852 set_ccvars CC
2853
2854 probe_cc hostcc "$host_cc"
2855 host_cflags_filter=$_flags_filter
2856 add_host_cflags  $_flags $_cflags
2857 set_ccvars HOSTCC
2858
2859 test -n "$cc_type" && enable $cc_type ||
2860     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2861
2862 : ${as_default:=$cc}
2863 : ${dep_cc_default:=$cc}
2864 : ${ld_default:=$cc}
2865 : ${host_ld_default:=$host_cc}
2866 set_default ar as dep_cc ld host_ld
2867
2868 probe_cc as "$as"
2869 asflags_filter=$_flags_filter
2870 add_asflags $_flags $_cflags
2871 set_ccvars AS
2872
2873 probe_cc ld "$ld"
2874 ldflags_filter=$_flags_filter
2875 add_ldflags $_flags $_ldflags
2876 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2877 LD_O=${_ld_o-$LD_O}
2878 LD_LIB=${_ld_lib-$LD_LIB}
2879 LD_PATH=${_ld_path-$LD_PATH}
2880
2881 probe_cc hostld "$host_ld"
2882 host_ldflags_filter=$_flags_filter
2883 add_host_ldflags $_flags $_ldflags
2884 HOSTLD_O=${_ld_o-$HOSTLD_O}
2885
2886 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2887     probe_cc depcc "$dep_cc"
2888     CCDEP=${_DEPCMD:-$DEPCMD}
2889     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2890     DEPCCFLAGS=$_flags
2891 fi
2892
2893 if $ar 2>&1 | grep -q Microsoft; then
2894     arflags="-nologo"
2895     ar_o='-out:$@'
2896 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2897     arflags="rq"
2898     ar_o='$@'
2899 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
2900     arflags='-Xany -r -c'
2901     ar_o='$@'
2902 else
2903     arflags="rc"
2904     ar_o='$@'
2905 fi
2906
2907 add_cflags $extra_cflags
2908 add_asflags $extra_cflags
2909
2910 if test -n "$sysroot"; then
2911     case "$cc_type" in
2912         gcc|llvm_gcc|clang)
2913             add_cppflags --sysroot="$sysroot"
2914             add_ldflags --sysroot="$sysroot"
2915         ;;
2916         tms470)
2917             add_cppflags -I"$sysinclude"
2918             add_ldflags  --sysroot="$sysroot"
2919         ;;
2920     esac
2921 fi
2922
2923 if test "$cpu" = host; then
2924     enabled cross_compile &&
2925         die "--cpu=host makes no sense when cross-compiling."
2926
2927     case "$cc_type" in
2928         gcc|llvm_gcc)
2929             check_native(){
2930                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2931                 sed -n "/cc1.*$1=/{
2932                             s/.*$1=\\([^ ]*\\).*/\\1/
2933                             p
2934                             q
2935                         }" $TMPE
2936             }
2937             cpu=$(check_native -march || check_native -mcpu)
2938         ;;
2939     esac
2940
2941     test "${cpu:-host}" = host &&
2942         die "--cpu=host not supported with compiler $cc"
2943 fi
2944
2945 # Deal with common $arch aliases
2946 case "$arch" in
2947     aarch64|arm64)
2948         arch="aarch64"
2949     ;;
2950     arm*)
2951         arch="arm"
2952     ;;
2953     mips*|IP*)
2954         arch="mips"
2955     ;;
2956     parisc*|hppa*)
2957         arch="parisc"
2958     ;;
2959     "Power Macintosh"|ppc*|powerpc*)
2960         arch="ppc"
2961     ;;
2962     s390|s390x)
2963         arch="s390"
2964     ;;
2965     sh4|sh)
2966         arch="sh4"
2967     ;;
2968     sun4u|sparc*)
2969         arch="sparc"
2970     ;;
2971     tilegx|tile-gx)
2972         arch="tilegx"
2973     ;;
2974     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
2975         arch="x86"
2976     ;;
2977 esac
2978
2979 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2980 enable $arch
2981
2982 # Add processor-specific flags
2983 if enabled aarch64; then
2984
2985     case $cpu in
2986         armv*)
2987             cpuflags="-march=$cpu"
2988         ;;
2989         *)
2990             cpuflags="-mcpu=$cpu"
2991         ;;
2992     esac
2993
2994 elif enabled alpha; then
2995
2996     cpuflags="-mcpu=$cpu"
2997
2998 elif enabled arm; then
2999
3000     check_arm_arch() {
3001         check_cpp_condition stddef.h \
3002             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3003             $cpuflags
3004     }
3005
3006     probe_arm_arch() {
3007         if   check_arm_arch 4;        then echo armv4;
3008         elif check_arm_arch 4T;       then echo armv4t;
3009         elif check_arm_arch 5;        then echo armv5;
3010         elif check_arm_arch 5E;       then echo armv5e;
3011         elif check_arm_arch 5T;       then echo armv5t;
3012         elif check_arm_arch 5TE;      then echo armv5te;
3013         elif check_arm_arch 5TEJ;     then echo armv5te;
3014         elif check_arm_arch 6;        then echo armv6;
3015         elif check_arm_arch 6J;       then echo armv6j;
3016         elif check_arm_arch 6K;       then echo armv6k;
3017         elif check_arm_arch 6Z;       then echo armv6z;
3018         elif check_arm_arch 6ZK;      then echo armv6zk;
3019         elif check_arm_arch 6T2;      then echo armv6t2;
3020         elif check_arm_arch 7;        then echo armv7;
3021         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3022         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3023         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3024         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3025         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3026         fi
3027     }
3028
3029     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3030
3031     case $cpu in
3032         armv*)
3033             cpuflags="-march=$cpu"
3034             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3035         ;;
3036         *)
3037             cpuflags="-mcpu=$cpu"
3038             case $cpu in
3039                 cortex-a*)                               subarch=armv7a  ;;
3040                 cortex-r*)                               subarch=armv7r  ;;
3041                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3042                 arm11*)                                  subarch=armv6   ;;
3043                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3044                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3045                 *)                             subarch=$(probe_arm_arch) ;;
3046             esac
3047         ;;
3048     esac
3049
3050     case "$subarch" in
3051         armv5t*)    enable fast_clz                ;;
3052         armv[6-8]*) enable fast_clz fast_unaligned ;;
3053     esac
3054
3055 elif enabled avr32; then
3056
3057     case $cpu in
3058         ap7[02]0[0-2])
3059             subarch="avr32_ap"
3060             cpuflags="-mpart=$cpu"
3061         ;;
3062         ap)
3063             subarch="avr32_ap"
3064             cpuflags="-march=$cpu"
3065         ;;
3066         uc3[ab]*)
3067             subarch="avr32_uc"
3068             cpuflags="-mcpu=$cpu"
3069         ;;
3070         uc)
3071             subarch="avr32_uc"
3072             cpuflags="-march=$cpu"
3073         ;;
3074     esac
3075
3076 elif enabled bfin; then
3077
3078     cpuflags="-mcpu=$cpu"
3079
3080 elif enabled mips; then
3081
3082     cpuflags="-march=$cpu"
3083
3084 elif enabled ppc; then
3085
3086     case $(tolower $cpu) in
3087         601|ppc601|powerpc601)
3088             cpuflags="-mcpu=601"
3089             disable altivec
3090         ;;
3091         603*|ppc603*|powerpc603*)
3092             cpuflags="-mcpu=603"
3093             disable altivec
3094         ;;
3095         604*|ppc604*|powerpc604*)
3096             cpuflags="-mcpu=604"
3097             disable altivec
3098         ;;
3099         g3|75*|ppc75*|powerpc75*)
3100             cpuflags="-mcpu=750"
3101             disable altivec
3102         ;;
3103         g4|745*|ppc745*|powerpc745*)
3104             cpuflags="-mcpu=7450"
3105         ;;
3106         74*|ppc74*|powerpc74*)
3107             cpuflags="-mcpu=7400"
3108         ;;
3109         g5|970|ppc970|powerpc970)
3110             cpuflags="-mcpu=970"
3111         ;;
3112         power[3-7]*)
3113             cpuflags="-mcpu=$cpu"
3114         ;;
3115         cell)
3116             cpuflags="-mcpu=cell"
3117             enable ldbrx
3118         ;;
3119         e500mc)
3120             cpuflags="-mcpu=e500mc"
3121             disable altivec
3122         ;;
3123         e500v2)
3124             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3125             disable altivec
3126         ;;
3127         e500)
3128             cpuflags="-mcpu=8540 -mhard-float"
3129             disable altivec
3130         ;;
3131     esac
3132
3133 elif enabled sparc; then
3134
3135     case $cpu in
3136         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3137             cpuflags="-mcpu=$cpu"
3138             disable vis
3139         ;;
3140         ultrasparc*|niagara[234])
3141             cpuflags="-mcpu=$cpu"
3142         ;;
3143     esac
3144
3145 elif enabled x86; then
3146
3147     case $cpu in
3148         i[345]86|pentium)
3149             cpuflags="-march=$cpu"
3150             disable mmx
3151         ;;
3152         # targets that do NOT support nopl and conditional mov (cmov)
3153         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3154             cpuflags="-march=$cpu"
3155             disable i686
3156         ;;
3157         # targets that do support nopl and conditional mov (cmov)
3158         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3159             cpuflags="-march=$cpu"
3160             enable i686
3161             enable fast_cmov
3162         ;;
3163         # targets that do support conditional mov but on which it's slow
3164         pentium4|pentium4m|prescott|nocona)
3165             cpuflags="-march=$cpu"
3166             enable i686
3167             disable fast_cmov
3168         ;;
3169     esac
3170
3171 fi
3172
3173 if [ "$cpu" != generic ]; then
3174     add_cflags  $cpuflags
3175     add_asflags $cpuflags
3176 fi
3177
3178 # compiler sanity check
3179 check_exec <<EOF
3180 int main(void){ return 0; }
3181 EOF
3182 if test "$?" != 0; then
3183     echo "$cc is unable to create an executable file."
3184     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3185         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3186         echo "Only do this if you know what cross compiling means."
3187     fi
3188     die "C compiler test failed."
3189 fi
3190
3191 add_cppflags -D_ISOC99_SOURCE
3192 check_cflags -std=c99
3193 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3194 #include <stdlib.h>
3195 EOF
3196 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3197 #include <stdlib.h>
3198 EOF
3199
3200 add_host_cppflags -D_ISOC99_SOURCE
3201 check_host_cflags -std=c99
3202 check_host_cflags -Wall
3203 check_host_cflags -O3
3204
3205 check_64bit(){
3206     arch32=$1
3207     arch64=$2
3208     expr=$3
3209     check_code cc "" "int test[2*($expr) - 1]" &&
3210         subarch=$arch64 || subarch=$arch32
3211 }
3212
3213 case "$arch" in
3214     aarch64|alpha|ia64)
3215         spic=$shared
3216     ;;
3217     mips)
3218         check_64bit mips mips64 '_MIPS_SIM > 1'
3219         spic=$shared
3220     ;;
3221     parisc)
3222         check_64bit parisc parisc64 'sizeof(void *) > 4'
3223         spic=$shared
3224     ;;
3225     ppc)
3226         check_64bit ppc ppc64 'sizeof(void *) > 4'
3227         spic=$shared
3228     ;;
3229     s390)
3230         check_64bit s390 s390x 'sizeof(void *) > 4'
3231         spic=$shared
3232     ;;
3233     sparc)
3234         check_64bit sparc sparc64 'sizeof(void *) > 4'
3235         spic=$shared
3236     ;;
3237     x86)
3238         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3239         if test "$subarch" = "x86_64"; then
3240             spic=$shared
3241         fi
3242     ;;
3243 esac
3244
3245 enable $subarch
3246 enabled spic && enable_weak pic
3247
3248 # OS specific
3249 case $target_os in
3250     aix)
3251         SHFLAGS=-shared
3252         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3253         enabled shared && add_ldflags -Wl,-brtl
3254         ;;
3255     haiku)
3256         prefix_default="/boot/common"
3257         network_extralibs="-lnetwork"
3258         host_libs=
3259         ;;
3260     sunos)
3261         SHFLAGS='-shared -Wl,-h,$$(@F)'
3262         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3263         network_extralibs="-lsocket -lnsl"
3264         # When using suncc to build, the Solaris linker will mark
3265         # an executable with each instruction set encountered by
3266         # the Solaris assembler.  As our libraries contain their own
3267         # guards for processor-specific code, instead suppress
3268         # generation of the HWCAPS ELF section on Solaris x86 only.
3269         enabled_all suncc x86 &&
3270             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3271             add_ldflags -Wl,-M,mapfile
3272         nm_default='nm -P -g'
3273         ;;
3274     netbsd)
3275         disable symver
3276         oss_indev_extralibs="-lossaudio"
3277         oss_outdev_extralibs="-lossaudio"
3278         ;;
3279     openbsd|bitrig)
3280         disable symver
3281         SHFLAGS='-shared'
3282         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3283         SLIB_INSTALL_LINKS=
3284         oss_indev_extralibs="-lossaudio"
3285         oss_outdev_extralibs="-lossaudio"
3286         ;;
3287     dragonfly)
3288         disable symver
3289         ;;
3290     freebsd)
3291         ;;
3292     bsd/os)
3293         add_extralibs -lpoll -lgnugetopt
3294         ;;
3295     darwin)
3296         gas="gas-preprocessor.pl $cc"
3297         enabled ppc && add_asflags -force_cpusubtype_ALL
3298         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3299         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3300         add_ldflags -Wl,-dynamic,-search_paths_first
3301         SLIBSUF=".dylib"
3302         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3303         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3304         objformat="macho"
3305         enabled x86_64 && objformat="macho64"
3306         enabled_any pic shared ||
3307             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3308         ;;
3309     mingw32*)
3310         if test $target_os = "mingw32ce"; then
3311             disable network
3312         else
3313             target_os=mingw32
3314         fi
3315         LIBTARGET=i386
3316         if enabled x86_64; then
3317             LIBTARGET="i386:x86-64"
3318         elif enabled arm; then
3319             LIBTARGET=arm-wince
3320         fi
3321         check_ldflags -Wl,--nxcompat
3322         check_ldflags -Wl,--dynamicbase
3323         shlibdir_default="$bindir_default"
3324         SLIBPREF=""
3325         SLIBSUF=".dll"
3326         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3327         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3328         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3329         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3330         SLIB_INSTALL_LINKS=
3331         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3332         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3333         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3334         objformat="win32"
3335         dlltool="${cross_prefix}dlltool"
3336         ranlib=:
3337         enable dos_paths
3338         ;;
3339     win32|win64)
3340         disable symver
3341         if enabled shared; then
3342             # Link to the import library instead of the normal static library
3343             # for shared libs.
3344             LD_LIB='%.lib'
3345             # Cannot build both shared and static libs with MSVC or icl.
3346             disable static
3347         fi
3348         shlibdir_default="$bindir_default"
3349         SLIBPREF=""
3350         SLIBSUF=".dll"
3351         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3352         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3353         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3354         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3355         SLIB_INSTALL_LINKS=
3356         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3357         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3358         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3359         objformat="win32"
3360         ranlib=:
3361         enable dos_paths
3362         ;;
3363     cygwin*)
3364         target_os=cygwin
3365         shlibdir_default="$bindir_default"
3366         SLIBPREF="cyg"
3367         SLIBSUF=".dll"
3368         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3369         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3370         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3371         SLIB_INSTALL_LINKS=
3372         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3373         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3374         objformat="win32"
3375         enable dos_paths
3376         ;;
3377     *-dos|freedos|opendos)
3378         network_extralibs="-lsocket"
3379         objformat="coff"
3380         enable dos_paths
3381         add_cppflags -U__STRICT_ANSI__
3382         ;;
3383     linux)
3384         enable dv1394
3385         ;;
3386     irix*)
3387         target_os=irix
3388         ranlib="echo ignoring ranlib"
3389         ;;
3390     os/2*)
3391         ln_s="cp -f"
3392         objformat="aout"
3393         add_cppflags -D_GNU_SOURCE
3394         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3395         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3396         LIBSUF="_s.a"
3397         SLIBPREF=""
3398         SLIBSUF=".dll"
3399         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3400         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3401         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3402             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3403             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3404             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3405             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3406             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3407         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3408             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3409         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3410         enable dos_paths
3411         ;;
3412     gnu/kfreebsd)
3413         add_cppflags -D_BSD_SOURCE
3414         ;;
3415     gnu)
3416         ;;
3417     qnx)
3418         add_cppflags -D_QNX_SOURCE
3419         network_extralibs="-lsocket"
3420         ;;
3421     symbian)
3422         SLIBSUF=".dll"
3423         enable dos_paths
3424         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3425         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3426         add_ldflags -Wl,--target1-abs,--no-undefined \
3427                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3428                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3429         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3430                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3431                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3432         ;;
3433     osf1)
3434         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3435         ;;
3436     minix)
3437         ;;
3438     plan9)
3439         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3440                      -D_REENTRANT_SOURCE        \
3441                      -D_RESEARCH_SOURCE         \
3442                      -DFD_SETSIZE=96            \
3443                      -DHAVE_SOCK_OPTS
3444         add_compat strtod.o strtod=avpriv_strtod
3445         network_extralibs='-lbsd'
3446         exeobjs=compat/plan9/main.o
3447         disable avserver
3448         cp_f='cp'
3449         ;;
3450     none)
3451         ;;
3452     *)
3453         die "Unknown OS '$target_os'."
3454         ;;
3455 esac
3456
3457 # determine libc flavour
3458
3459 probe_libc(){
3460     pfx=$1
3461     pfx_no_=${pfx%_}
3462     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3463     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3464         eval ${pfx}libc_type=uclibc
3465         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3466     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3467         eval ${pfx}libc_type=glibc
3468         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3469     # MinGW headers can be installed on Cygwin, so check for newlib first.
3470     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3471         eval ${pfx}libc_type=newlib
3472         add_${pfx}cppflags -U__STRICT_ANSI__
3473     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3474     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3475         eval ${pfx}libc_type=mingw64
3476         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3477         eval test \$${pfx_no_}cc_type = "gcc" &&
3478             add_${pfx}cppflags -D__printf__=__gnu_printf__
3479     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3480          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3481         eval ${pfx}libc_type=mingw32
3482         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3483             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3484             die "ERROR: MinGW32 runtime version must be >= 3.15."
3485         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3486         eval test \$${pfx_no_}cc_type = "gcc" &&
3487             add_${pfx}cppflags -D__printf__=__gnu_printf__
3488     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3489         eval ${pfx}libc_type=msvcrt
3490         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3491         # 0x601 by default unless something else is set by the user.
3492         # This can easily lead to us detecting functions only present
3493         # in such new versions and producing binaries requiring windows 7.0.
3494         # Therefore explicitly set the default to XP unless the user has
3495         # set something else on the command line.
3496         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3497             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3498     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3499         eval ${pfx}libc_type=klibc
3500     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3501         eval ${pfx}libc_type=bionic
3502     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3503         eval ${pfx}libc_type=solaris
3504         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3505     fi
3506 }
3507
3508 probe_libc
3509 test -n "$libc_type" && enable libc_$libc_type
3510 probe_libc host_
3511 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3512
3513 case $libc_type in
3514     bionic)
3515         add_compat strtod.o strtod=avpriv_strtod
3516         ;;
3517     msvcrt)
3518         add_compat strtod.o strtod=avpriv_strtod
3519         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3520                                      _snprintf=avpriv_snprintf  \
3521                                      vsnprintf=avpriv_vsnprintf
3522         ;;
3523 esac
3524
3525 # hacks for compiler/libc/os combinations
3526
3527 if enabled_all tms470 libc_glibc; then
3528     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3529     add_cppflags -D__USER_LABEL_PREFIX__=
3530     add_cppflags -D__builtin_memset=memset
3531     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3532     add_cflags   -pds=48    # incompatible redefinition of macro
3533 fi
3534
3535 if enabled_all ccc libc_glibc; then
3536     add_ldflags -Wl,-z,now  # calls to libots crash without this
3537 fi
3538
3539 esc(){
3540     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3541 }
3542
3543 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3544
3545 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3546
3547 set_default $PATHS_LIST
3548 set_default nm
3549
3550 # we need to build at least one lib type
3551 if ! enabled_any static shared; then
3552     cat <<EOF
3553 At least one library type must be built.
3554 Specify --enable-static to build the static libraries or --enable-shared to
3555 build the shared libraries as well. To only build the shared libraries specify
3556 --disable-static in addition to --enable-shared.
3557 EOF
3558     exit 1;
3559 fi
3560
3561 die_license_disabled() {
3562     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3563 }
3564
3565 die_license_disabled gpl libcdio
3566 die_license_disabled gpl libx264
3567 die_license_disabled gpl libx265
3568 die_license_disabled gpl libxavs
3569 die_license_disabled gpl libxvid
3570 die_license_disabled gpl x11grab
3571
3572 die_license_disabled nonfree libfaac
3573 die_license_disabled nonfree libfdk_aac
3574 die_license_disabled nonfree openssl
3575
3576 die_license_disabled version3 libopencore_amrnb
3577 die_license_disabled version3 libopencore_amrwb
3578 die_license_disabled version3 libvo_aacenc
3579 die_license_disabled version3 libvo_amrwbenc
3580
3581 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3582
3583 disabled optimizations || check_cflags -fomit-frame-pointer
3584
3585 enable_weak_pic() {
3586     disabled pic && return
3587     enable pic
3588     add_cppflags -DPIC
3589     case "$target_os" in
3590     mingw*|cygwin*)
3591         ;;
3592     *)
3593         add_cflags -fPIC
3594         ;;
3595     esac
3596     add_asflags  -fPIC
3597 }
3598
3599 enabled pic && enable_weak_pic
3600
3601 check_cc <<EOF || die "Symbol mangling check failed."
3602 int ff_extern;
3603 EOF
3604 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3605 extern_prefix=${sym%%ff_extern*}
3606
3607 check_cc <<EOF && enable_weak inline_asm
3608 void foo(void) { __asm__ volatile ("" ::); }
3609 EOF
3610
3611 _restrict=
3612 for restrict_keyword in restrict __restrict__ __restrict; do
3613     check_cc <<EOF && _restrict=$restrict_keyword && break
3614 void foo(char * $restrict_keyword p);
3615 EOF
3616 done
3617
3618 check_cc <<EOF && enable pragma_deprecated
3619 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3620 EOF
3621
3622 check_cc <<EOF && enable attribute_packed
3623 struct { int x; } __attribute__((packed)) x;
3624 EOF
3625
3626 check_cc <<EOF && enable attribute_may_alias
3627 union { int x; } __attribute__((may_alias)) x;
3628 EOF
3629
3630 check_cc <<EOF || die "endian test failed"
3631 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3632 EOF
3633 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3634
3635 check_inline_asm inline_asm_labels '"1:\n"'
3636
3637 if enabled aarch64; then
3638     # internal assembler in clang 3.3 does not support this instruction
3639     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
3640     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
3641
3642     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
3643
3644 elif enabled alpha; then
3645
3646     check_cflags -mieee
3647
3648 elif enabled arm; then
3649
3650     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3651     enabled thumb && check_cflags -mthumb || check_cflags -marm
3652     nogas=die
3653
3654     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3655         enable vfp_args
3656     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3657         case "${cross_prefix:-$cc}" in
3658             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3659             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3660 __asm__ (".eabi_attribute 28, 1");
3661 int main(void) { return 0; }
3662 EOF
3663         esac
3664         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3665     fi
3666
3667     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3668     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3669     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3670     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3671     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3672     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3673
3674     [ $target_os = linux ] ||
3675         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3676             $ARCH_EXT_LIST_ARM
3677
3678     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3679
3680     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3681
3682 elif enabled mips; then
3683
3684     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3685
3686 elif enabled parisc; then
3687
3688     if enabled gcc; then
3689         case $($cc -dumpversion) in
3690             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3691         esac
3692     fi
3693
3694 elif enabled ppc; then
3695
3696     enable local_aligned_8 local_aligned_16
3697
3698     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3699     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3700     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3701     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3702
3703     # AltiVec flags: The FSF version of GCC differs from the Apple version
3704     if enabled altivec; then
3705         nogas=warn
3706         check_cflags -maltivec -mabi=altivec &&
3707         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3708         check_cflags -faltivec
3709
3710         # check if our compiler supports Motorola AltiVec C API
3711         check_cc <<EOF || disable altivec
3712 $inc_altivec_h
3713 int main(void) {
3714     vector signed int v1 = (vector signed int) { 0 };
3715     vector signed int v2 = (vector signed int) { 1 };
3716     v1 = vec_add(v1, v2);
3717     return 0;
3718 }
3719 EOF
3720
3721         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3722     fi
3723
3724 elif enabled sparc; then
3725
3726     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3727
3728 elif enabled x86; then
3729
3730     check_builtin rdtsc    intrin.h   "__rdtsc()"
3731     check_builtin mm_empty mmintrin.h "_mm_empty()"
3732
3733     enable local_aligned_8 local_aligned_16
3734
3735     # check whether EBP is available on x86
3736     # As 'i' is stored on the stack, this program will crash
3737     # if the base pointer is used to access it because the
3738     # base pointer is cleared in the inline assembly code.
3739     check_exec_crash <<EOF && enable ebp_available
3740 volatile int i=0;
3741 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3742 return i;
3743 EOF
3744
3745     # check whether EBX is available on x86
3746     check_inline_asm ebx_available '""::"b"(0)' &&
3747         check_inline_asm ebx_available '"":::"%ebx"'
3748
3749     # check whether xmm clobbers are supported
3750     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3751
3752     # check whether binutils is new enough to compile SSSE3/MMXEXT
3753     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3754     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3755
3756     if ! disabled_any asm mmx yasm; then
3757         if check_cmd $yasmexe --version; then
3758             enabled x86_64 && yasm_extra="-m amd64"
3759             yasm_debug="-g dwarf2"
3760         elif check_cmd nasm -v; then
3761             yasmexe=nasm
3762             yasm_debug="-g -F dwarf"
3763             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3764         fi
3765
3766         YASMFLAGS="-f $objformat $yasm_extra"
3767         enabled pic               && append YASMFLAGS "-DPIC"
3768         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3769         case "$objformat" in
3770             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3771         esac
3772
3773         check_yasm "movbe ecx, [5]" && enable yasm ||
3774             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
3775         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
3776         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
3777         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3778         check_yasm "CPU amdnop" || disable cpunop
3779     fi
3780
3781     case "$cpu" in
3782         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3783             disable fast_clz
3784         ;;
3785     esac
3786
3787 fi
3788
3789 if enabled asm; then
3790     as=${gas:=$as}
3791     check_as <<EOF && enable gnu_as || \
3792         $nogas "GNU assembler not found, install gas-preprocessor"
3793 .macro m n
3794 \n: .int 0
3795 .endm
3796 m x
3797 EOF
3798 fi
3799
3800 check_ldflags -Wl,--as-needed
3801
3802 if check_func dlopen; then
3803     ldl=
3804 elif check_func dlopen -ldl; then
3805     ldl=-ldl
3806 fi
3807
3808 if ! disabled network; then
3809     check_type "sys/types.h sys/socket.h" socklen_t
3810     check_type netdb.h "struct addrinfo"
3811     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3812     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3813     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3814     check_type netinet/in.h "struct sockaddr_in6"
3815     check_type poll.h "struct pollfd"
3816     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3817     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3818     check_type netinet/sctp.h "struct sctp_event_subscribe"
3819     check_func getaddrinfo $network_extralibs
3820     check_func getservbyport $network_extralibs
3821     check_func inet_aton $network_extralibs
3822     # Prefer arpa/inet.h over winsock2
3823     if check_header arpa/inet.h ; then
3824         check_func closesocket
3825     elif check_header winsock2.h ; then
3826         check_func_headers winsock2.h closesocket -lws2 &&
3827             network_extralibs="-lws2" ||
3828         { check_func_headers winsock2.h closesocket -lws2_32 &&
3829             network_extralibs="-lws2_32"; } || disable winsock2_h network
3830         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3831         check_type ws2tcpip.h socklen_t
3832         check_type ws2tcpip.h "struct addrinfo"
3833         check_type ws2tcpip.h "struct group_source_req"
3834         check_type ws2tcpip.h "struct ip_mreq_source"
3835         check_type ws2tcpip.h "struct ipv6_mreq"
3836         check_type winsock2.h "struct pollfd"
3837         check_type ws2tcpip.h "struct sockaddr_in6"
3838         check_type ws2tcpip.h "struct sockaddr_storage"
3839         check_struct winsock2.h "struct sockaddr" sa_len
3840     else
3841         disable network
3842     fi
3843 fi
3844
3845 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3846 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3847
3848 check_func  fcntl
3849 check_func  fork
3850 check_func_headers stdlib.h getenv
3851 check_func  gethrtime
3852 check_func  getopt
3853 check_func  getrusage
3854 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
3855 check_func  gettimeofday
3856 check_func  isatty
3857 check_func  localtime_r
3858 check_func  mach_absolute_time
3859 check_func  ${malloc_prefix}memalign            && enable memalign
3860 check_func  mkstemp
3861 check_func  mmap
3862 check_func  mprotect
3863 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3864 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3865 check_func  setrlimit
3866 check_func  strerror_r
3867 check_func  strptime
3868 check_func  sched_getaffinity
3869 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
3870 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
3871 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
3872 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
3873 check_func  sysconf
3874 check_func  sysctl
3875 check_func  usleep
3876 check_func_headers io.h setmode
3877 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
3878 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
3879 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
3880 check_func_headers windows.h GetProcessAffinityMask
3881 check_func_headers windows.h GetProcessTimes
3882 check_func_headers windows.h GetSystemTimeAsFileTime
3883 check_func_headers windows.h MapViewOfFile
3884 check_func_headers windows.h SetConsoleTextAttribute
3885 check_func_headers windows.h Sleep
3886 check_func_headers windows.h VirtualAlloc
3887
3888 check_header direct.h
3889 check_header dlfcn.h
3890 check_header dxva.h
3891 check_header dxva2api.h
3892 check_header io.h
3893 check_header mach/mach_time.h
3894 check_header malloc.h
3895 check_header poll.h
3896 check_header sys/mman.h
3897 check_header sys/param.h
3898 check_header sys/resource.h
3899 check_header sys/select.h
3900 check_header sys/time.h
3901 check_header sys/un.h
3902 check_header unistd.h
3903 check_header vdpau/vdpau.h
3904 check_header vdpau/vdpau_x11.h
3905 check_header VideoDecodeAcceleration/VDADecoder.h
3906 check_header windows.h
3907 check_header X11/extensions/XvMClib.h
3908
3909 if ! disabled w32threads && ! enabled pthreads; then
3910     check_func_headers "windows.h process.h" _beginthreadex &&
3911         enable w32threads || disable w32threads
3912 fi
3913
3914 # check for some common methods of building with pthread support
3915 # do this before the optional library checks as some of them require pthreads
3916 if ! disabled pthreads && ! enabled w32threads; then
3917     enable pthreads
3918     if check_func pthread_join -pthread; then
3919         add_cflags -pthread
3920         add_extralibs -pthread
3921     elif check_func pthread_join -pthreads; then
3922         add_cflags -pthreads
3923         add_extralibs -pthreads
3924     elif check_func pthread_join -lpthreadGC2; then
3925         add_extralibs -lpthreadGC2
3926     elif check_lib pthread.h pthread_join -lpthread; then
3927         :
3928     elif ! check_func pthread_join; then
3929         disable pthreads
3930     fi
3931 fi
3932
3933 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
3934 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
3935
3936 check_lib math.h sin -lm && LIBM="-lm"
3937 enabled vaapi && require vaapi va/va.h vaInitialize -lva
3938
3939 atan2f_args=2
3940 ldexpf_args=2
3941 powf_args=2
3942
3943 for func in $MATH_FUNCS; do
3944     eval check_mathfunc $func \${${func}_args:-1}
3945 done
3946
3947 # these are off by default, so fail if requested and not available
3948 enabled avisynth          && { { check_header "avisynth/avisynth_c.h" && check_lib2 "windows.h" LoadLibrary; } ||
3949                                { check_header "avxsynth/avxsynth_c.h" && check_lib2 "dlfcn.h" dlopen -ldl; } ||
3950                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
3951 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
3952 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
3953 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
3954 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
3955 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
3956 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
3957                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
3958                                done || die "ERROR: libgsm not found"; }
3959 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
3960 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
3961 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
3962 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
3963 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
3964 enabled libopenjpeg       && require_pkg_config libopenjpeg openjpeg.h opj_version
3965 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
3966 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
3967 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
3968 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
3969 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
3970 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
3971 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
3972 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
3973 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
3974 enabled libvpx            && {
3975     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
3976                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
3977     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
3978                                     die "ERROR: libvpx encoder version must be >=0.9.6"; }
3979     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
3980     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
3981 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
3982 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
3983 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
3984                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
3985                                die "ERROR: libx264 version must be >= 0.118."; }
3986 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
3987                              { check_cpp_condition x265.h "X265_BUILD >= 9" ||
3988                                die "ERROR: libx265 version must be >= 9."; }
3989 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
3990 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
3991 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
3992                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
3993                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
3994                                die "ERROR: openssl not found"; }
3995
3996 if enabled gnutls; then
3997     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
3998     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
3999 fi
4000
4001 # libdc1394 check
4002 if enabled libdc1394; then
4003     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4004         enable libdc1394_2; } ||
4005     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4006         enable libdc1394_1; } ||
4007     die "ERROR: No version of libdc1394 found "
4008 fi
4009
4010 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4011     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4012     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4013     enable sdl
4014 fi
4015
4016 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4017 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
4018
4019 check_header linux/fb.h
4020 check_header linux/videodev2.h
4021 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4022
4023 check_header sys/videoio.h
4024
4025 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4026 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4027 # w32api 3.12 had it defined wrong
4028 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4029
4030 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4031 { check_header dev/bktr/ioctl_meteor.h &&
4032   check_header dev/bktr/ioctl_bt848.h; } ||
4033 { check_header machine/ioctl_meteor.h &&
4034   check_header machine/ioctl_bt848.h; } ||
4035 { check_header dev/video/meteor/ioctl_meteor.h &&
4036   check_header dev/video/bktr/ioctl_bt848.h; } ||
4037 check_header dev/ic/bt8xx.h
4038
4039 check_header sndio.h
4040 check_header sys/soundcard.h
4041 check_header soundcard.h
4042