g2meet: factor out seeking to the chunk end
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken Libav."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --prefix=PREFIX          install in PREFIX [$prefix]
82   --bindir=DIR             install binaries in DIR [PREFIX/bin]
83   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
84   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
85   --libdir=DIR             install libs in DIR [PREFIX/lib]
86   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
87   --incdir=DIR             install includes in DIR [PREFIX/include]
88   --mandir=DIR             install man page in DIR [PREFIX/share/man]
89
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-libxavs         enable AVS encoding via xavs [no]
208   --enable-libxvid         enable Xvid encoding via xvidcore,
209                            native MPEG-4/Xvid encoder exists [no]
210   --enable-openssl         enable openssl [no]
211   --enable-x11grab         enable X11 grabbing [no]
212   --enable-zlib            enable zlib [autodetect]
213
214 Advanced options (experts only):
215   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
216   --enable-cross-compile   assume a cross-compiler is used
217   --sysroot=PATH           root of cross-build tree
218   --sysinclude=PATH        location of cross-build system headers
219   --target-os=OS           compiler targets OS [$target_os]
220   --target-exec=CMD        command to run executables on target
221   --target-path=DIR        path to view of build directory on target
222   --target-samples=DIR     path to samples directory on target
223   --toolchain=NAME         set tool defaults according to NAME
224   --nm=NM                  use nm tool
225   --ar=AR                  use archive tool AR [$ar_default]
226   --as=AS                  use assembler AS [$as_default]
227   --cc=CC                  use C compiler CC [$cc_default]
228   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
229   --ld=LD                  use linker LD
230   --host-cc=HOSTCC         use host C compiler HOSTCC
231   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
232   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
233   --host-ld=HOSTLD         use host linker HOSTLD
234   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
235   --host-libs=HLIBS        use libs HLIBS when linking for host
236   --host-os=OS             compiler host OS [$target_os]
237   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
238   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
239   --extra-libs=ELIBS       add ELIBS [$ELIBS]
240   --extra-version=STRING   version string suffix []
241   --optflags=OPTFLAGS      override optimization-related compiler flags
242   --build-suffix=SUFFIX    library name suffix []
243   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
244   --arch=ARCH              select architecture [$arch]
245   --cpu=CPU                select the minimum required CPU (affects
246                            instruction selection, may crash on older CPUs)
247   --enable-pic             build position-independent code
248   --enable-sram            allow use of on-chip SRAM
249   --enable-thumb           compile for Thumb instruction set
250   --disable-symver         disable symbol versioning
251   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
252   --disable-safe-bitstream-reader
253                            disable buffer boundary checking in bitreaders
254                            (faster, but may crash)
255   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
256   --enable-lto             use link-time optimization
257
258 Optimization options (experts only):
259   --disable-asm            disable all assembler optimizations
260   --disable-altivec        disable AltiVec optimizations
261   --disable-amd3dnow       disable 3DNow! optimizations
262   --disable-amd3dnowext    disable 3DNow! extended optimizations
263   --disable-mmx            disable MMX optimizations
264   --disable-mmxext         disable MMXEXT optimizations
265   --disable-sse            disable SSE optimizations
266   --disable-sse2           disable SSE2 optimizations
267   --disable-sse3           disable SSE3 optimizations
268   --disable-ssse3          disable SSSE3 optimizations
269   --disable-sse4           disable SSE4 optimizations
270   --disable-sse42          disable SSE4.2 optimizations
271   --disable-avx            disable AVX optimizations
272   --disable-fma4           disable FMA4 optimizations
273   --disable-avx2           disable AVX2 optimizations
274   --disable-armv5te        disable armv5te optimizations
275   --disable-armv6          disable armv6 optimizations
276   --disable-armv6t2        disable armv6t2 optimizations
277   --disable-vfp            disable VFP optimizations
278   --disable-neon           disable NEON optimizations
279   --disable-vis            disable VIS optimizations
280   --disable-inline-asm     disable use of inline assembler
281   --disable-yasm           disable use of yasm assembler
282
283 Developer options (useful when working on Libav itself):
284   --disable-debug          disable debugging symbols
285   --enable-debug=LEVEL     set the debug level [$debuglevel]
286   --disable-optimizations  disable compiler optimizations
287   --enable-extra-warnings  enable more compiler warnings
288   --samples=PATH           location of test samples for FATE, if not set use
289                            \$LIBAV_SAMPLES at make invocation time.
290   --enable-neon-clobber-test check NEON registers for clobbering (should be
291                            used only for debugging purposes)
292   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
293                            should be used only for debugging purposes)
294   --enable-random          randomly enable/disable components
295   --disable-random
296   --enable-random=LIST     randomly enable/disable specific components or
297   --disable-random=LIST    component groups. LIST is a comma-separated list
298                            of NAME[:PROB] entries where NAME is a component
299                            (group) and PROB the probability associated with
300                            NAME (default 0.5).
301   --random-seed=VALUE      seed value for --enable/disable-random
302
303 NOTE: Object files are built at the place where configure is launched.
304 EOF
305   exit 0
306 }
307
308 quotes='""'
309
310 log(){
311     echo "$@" >> $logfile
312 }
313
314 log_file(){
315     log BEGIN $1
316     pr -n -t $1 >> $logfile
317     log END $1
318 }
319
320 echolog(){
321     log "$@"
322     echo "$@"
323 }
324
325 warn(){
326     log "WARNING: $*"
327     WARNINGS="${WARNINGS}WARNING: $*\n"
328 }
329
330 die(){
331     echolog "$@"
332     cat <<EOF
333
334 If you think configure made a mistake, make sure you are using the latest
335 version from Git.  If the latest version fails, report the problem to the
336 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
337 EOF
338     if disabled logging; then
339         cat <<EOF
340 Rerun configure with logging enabled (do not use --disable-logging), and
341 include the log this produces with your report.
342 EOF
343     else
344         cat <<EOF
345 Include the log file "$logfile" produced by configure as this will help
346 solving the problem.
347 EOF
348     fi
349     exit 1
350 }
351
352 # Avoid locale weirdness, besides we really just want to translate ASCII.
353 toupper(){
354     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
355 }
356
357 tolower(){
358     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
359 }
360
361 c_escape(){
362     echo "$*" | sed 's/["\\]/\\\0/g'
363 }
364
365 sh_quote(){
366     v=$(echo "$1" | sed "s/'/'\\\\''/g")
367     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
368     echo "$v"
369 }
370
371 cleanws(){
372     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
373 }
374
375 filter(){
376     pat=$1
377     shift
378     for v; do
379         eval "case $v in $pat) echo $v ;; esac"
380     done
381 }
382
383 filter_out(){
384     pat=$1
385     shift
386     for v; do
387         eval "case $v in $pat) ;; *) echo $v ;; esac"
388     done
389 }
390
391 map(){
392     m=$1
393     shift
394     for v; do eval $m; done
395 }
396
397 add_suffix(){
398     suffix=$1
399     shift
400     for v; do echo ${v}${suffix}; done
401 }
402
403 set_all(){
404     value=$1
405     shift
406     for var in $*; do
407         eval $var=$value
408     done
409 }
410
411 set_weak(){
412     value=$1
413     shift
414     for var; do
415         eval : \${$var:=$value}
416     done
417 }
418
419 sanitize_var_name(){
420     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
421 }
422
423 set_safe(){
424     var=$1
425     shift
426     eval $(sanitize_var_name "$var")='$*'
427 }
428
429 get_safe(){
430     eval echo \$$(sanitize_var_name "$1")
431 }
432
433 pushvar(){
434     for pvar in $*; do
435         eval level=\${${pvar}_level:=0}
436         eval ${pvar}_${level}="\$$pvar"
437         eval ${pvar}_level=$(($level+1))
438     done
439 }
440
441 popvar(){
442     for pvar in $*; do
443         eval level=\${${pvar}_level:-0}
444         test $level = 0 && continue
445         eval level=$(($level-1))
446         eval $pvar="\${${pvar}_${level}}"
447         eval ${pvar}_level=$level
448         eval unset ${pvar}_${level}
449     done
450 }
451
452 enable(){
453     set_all yes $*
454 }
455
456 disable(){
457     set_all no $*
458 }
459
460 enable_weak(){
461     set_weak yes $*
462 }
463
464 disable_weak(){
465     set_weak no $*
466 }
467
468 enable_safe(){
469     for var; do
470         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
471     done
472 }
473
474 disable_safe(){
475     for var; do
476         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
477     done
478 }
479
480 do_enable_deep(){
481     for var; do
482         enabled $var && continue
483         eval sel="\$${var}_select"
484         eval sgs="\$${var}_suggest"
485         pushvar var sgs
486         enable_deep $sel
487         popvar sgs
488         enable_deep_weak $sgs
489         popvar var
490     done
491 }
492
493 enable_deep(){
494     do_enable_deep $*
495     enable $*
496 }
497
498 enable_deep_weak(){
499     for var; do
500         disabled $var && continue
501         pushvar var
502         do_enable_deep $var
503         popvar var
504         enable_weak $var
505     done
506 }
507
508 enabled(){
509     test "${1#!}" = "$1" && op== || op=!=
510     eval test "x\$${1#!}" $op "xyes"
511 }
512
513 disabled(){
514     test "${1#!}" = "$1" && op== || op=!=
515     eval test "x\$${1#!}" $op "xno"
516 }
517
518 enabled_all(){
519     for opt; do
520         enabled $opt || return 1
521     done
522 }
523
524 disabled_all(){
525     for opt; do
526         disabled $opt || return 1
527     done
528 }
529
530 enabled_any(){
531     for opt; do
532         enabled $opt && return 0
533     done
534 }
535
536 disabled_any(){
537     for opt; do
538         disabled $opt && return 0
539     done
540     return 1
541 }
542
543 set_default(){
544     for opt; do
545         eval : \${$opt:=\$${opt}_default}
546     done
547 }
548
549 is_in(){
550     value=$1
551     shift
552     for var in $*; do
553         [ $var = $value ] && return 0
554     done
555     return 1
556 }
557
558 do_check_deps(){
559     for cfg; do
560         cfg="${cfg#!}"
561         enabled ${cfg}_checking && die "Circular dependency for $cfg."
562         disabled ${cfg}_checking && continue
563         enable ${cfg}_checking
564         append allopts $cfg
565
566         eval dep_all="\$${cfg}_deps"
567         eval dep_any="\$${cfg}_deps_any"
568         eval dep_sel="\$${cfg}_select"
569         eval dep_sgs="\$${cfg}_suggest"
570         eval dep_ifa="\$${cfg}_if"
571         eval dep_ifn="\$${cfg}_if_any"
572
573         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
574         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
575         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
576
577         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
578         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
579         enabled_all  $dep_all || disable $cfg
580         enabled_any  $dep_any || disable $cfg
581         disabled_any $dep_sel && disable $cfg
582
583         if enabled $cfg; then
584             enable_deep $dep_sel
585             enable_deep_weak $dep_sgs
586         fi
587
588         disable ${cfg}_checking
589     done
590 }
591
592 check_deps(){
593     unset allopts
594
595     do_check_deps "$@"
596
597     for cfg in $allopts; do
598         enabled $cfg || continue
599         eval dep_extralibs="\$${cfg}_extralibs"
600         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
601     done
602 }
603
604 print_config(){
605     pfx=$1
606     files=$2
607     shift 2
608     map 'eval echo "$v \${$v:-no}"' "$@" |
609     awk "BEGIN { split(\"$files\", files) }
610         {
611             c = \"$pfx\" toupper(\$1);
612             v = \$2;
613             sub(/yes/, 1, v);
614             sub(/no/,  0, v);
615             for (f in files) {
616                 file = files[f];
617                 if (file ~ /\\.h\$/) {
618                     printf(\"#define %s %d\\n\", c, v) >>file;
619                 } else if (file ~ /\\.asm\$/) {
620                     printf(\"%%define %s %d\\n\", c, v) >>file;
621                 } else if (file ~ /\\.mak\$/) {
622                     n = -v ? \"\" : \"!\";
623                     printf(\"%s%s=yes\\n\", n, c) >>file;
624                 }
625             }
626         }"
627 }
628
629 print_enabled(){
630     suf=$1
631     shift
632     for v; do
633         enabled $v && printf "%s\n" ${v%$suf};
634     done
635 }
636
637 append(){
638     var=$1
639     shift
640     eval "$var=\"\$$var $*\""
641 }
642
643 prepend(){
644     var=$1
645     shift
646     eval "$var=\"$* \$$var\""
647 }
648
649 add_cppflags(){
650     append CPPFLAGS "$@"
651 }
652
653 add_cflags(){
654     append CFLAGS $($cflags_filter "$@")
655 }
656
657 add_asflags(){
658     append ASFLAGS $($asflags_filter "$@")
659 }
660
661 add_ldflags(){
662     append LDFLAGS $($ldflags_filter "$@")
663 }
664
665 add_stripflags(){
666     append STRIPFLAGS "$@"
667 }
668
669 add_extralibs(){
670     prepend extralibs $($ldflags_filter "$@")
671 }
672
673 add_host_cppflags(){
674     append host_cppflags "$@"
675 }
676
677 add_host_cflags(){
678     append host_cflags $($host_cflags_filter "$@")
679 }
680
681 add_host_ldflags(){
682     append host_ldflags $($host_ldflags_filter "$@")
683 }
684
685 add_compat(){
686     append compat_objs $1
687     shift
688     map 'add_cppflags -D$v' "$@"
689 }
690
691 check_cmd(){
692     log "$@"
693     "$@" >> $logfile 2>&1
694 }
695
696 cc_o(){
697     eval printf '%s\\n' $CC_O
698 }
699
700 cc_e(){
701     eval printf '%s\\n' $CC_E
702 }
703
704 check_cc(){
705     log check_cc "$@"
706     cat > $TMPC
707     log_file $TMPC
708     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
709 }
710
711 check_cpp(){
712     log check_cpp "$@"
713     cat > $TMPC
714     log_file $TMPC
715     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
716 }
717
718 as_o(){
719     eval printf '%s\\n' $AS_O
720 }
721
722 check_as(){
723     log check_as "$@"
724     cat > $TMPS
725     log_file $TMPS
726     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
727 }
728
729 check_inline_asm(){
730     log check_inline_asm "$@"
731     name="$1"
732     code="$2"
733     shift 2
734     disable $name
735     check_cc "$@" <<EOF && enable $name
736 void foo(void){ __asm__ volatile($code); }
737 EOF
738 }
739
740 check_insn(){
741     log check_insn "$@"
742     check_inline_asm ${1}_inline "\"$2\""
743     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
744 }
745
746 check_yasm(){
747     log check_yasm "$@"
748     echo "$1" > $TMPS
749     log_file $TMPS
750     shift 1
751     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
752 }
753
754 ld_o(){
755     eval printf '%s\\n' $LD_O
756 }
757
758 check_ld(){
759     log check_ld "$@"
760     flags=$(filter_out '-l*' "$@")
761     libs=$(filter '-l*' "$@")
762     check_cc $($cflags_filter $flags) || return
763     flags=$($ldflags_filter $flags)
764     libs=$($ldflags_filter $libs)
765     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
766 }
767
768 print_include(){
769     hdr=$1
770     test "${hdr%.h}" = "${hdr}" &&
771         echo "#include $hdr"    ||
772         echo "#include <$hdr>"
773 }
774
775 check_code(){
776     log check_code "$@"
777     check=$1
778     headers=$2
779     code=$3
780     shift 3
781     {
782         for hdr in $headers; do
783             print_include $hdr
784         done
785         echo "int main(void) { $code; return 0; }"
786     } | check_$check "$@"
787 }
788
789 check_cppflags(){
790     log check_cppflags "$@"
791     check_cc "$@" <<EOF && append CPPFLAGS "$@"
792 int x;
793 EOF
794 }
795
796 test_cflags(){
797     log test_cflags "$@"
798     set -- $($cflags_filter "$@")
799     check_cc "$@" <<EOF
800 int x;
801 EOF
802 }
803
804 check_cflags(){
805     log check_cflags "$@"
806     test_cflags "$@" && add_cflags "$@"
807 }
808
809 test_ldflags(){
810     log test_ldflags "$@"
811     check_ld "$@" <<EOF
812 int main(void){ return 0; }
813 EOF
814 }
815
816 check_ldflags(){
817     log check_ldflags "$@"
818     test_ldflags "$@" && add_ldflags "$@"
819 }
820
821 test_stripflags(){
822     log test_stripflags "$@"
823     # call check_cc to get a fresh TMPO
824     check_cc <<EOF
825 int main(void) { return 0; }
826 EOF
827     check_cmd $strip $STRIPFLAGS "$@" $TMPO
828 }
829
830 check_stripflags(){
831     log check_stripflags "$@"
832     test_stripflags "$@" && add_stripflags "$@"
833 }
834
835 check_header(){
836     log check_header "$@"
837     header=$1
838     shift
839     disable_safe $header
840     check_cpp "$@" <<EOF && enable_safe $header
841 #include <$header>
842 int x;
843 EOF
844 }
845
846 check_func(){
847     log check_func "$@"
848     func=$1
849     shift
850     disable $func
851     check_ld "$@" <<EOF && enable $func
852 extern int $func();
853 int main(void){ $func(); }
854 EOF
855 }
856
857 check_mathfunc(){
858     log check_mathfunc "$@"
859     func=$1
860     narg=$2
861     shift 2
862     test $narg = 2 && args="f, g" || args="f"
863     disable $func
864     check_ld "$@" <<EOF && enable $func
865 #include <math.h>
866 float foo(float f, float g) { return $func($args); }
867 int main(void){ return 0; }
868 EOF
869 }
870
871 check_func_headers(){
872     log check_func_headers "$@"
873     headers=$1
874     funcs=$2
875     shift 2
876     {
877         for hdr in $headers; do
878             print_include $hdr
879         done
880         for func in $funcs; do
881             echo "long check_$func(void) { return (long) $func; }"
882         done
883         echo "int main(void) { return 0; }"
884     } | check_ld "$@" && enable $funcs && enable_safe $headers
885 }
886
887 check_cpp_condition(){
888     log check_cpp_condition "$@"
889     header=$1
890     condition=$2
891     shift 2
892     check_cpp "$@" <<EOF
893 #include <$header>
894 #if !($condition)
895 #error "unsatisfied condition: $condition"
896 #endif
897 EOF
898 }
899
900 check_lib(){
901     log check_lib "$@"
902     header="$1"
903     func="$2"
904     shift 2
905     check_header $header && check_func $func "$@" && add_extralibs "$@"
906 }
907
908 check_lib2(){
909     log check_lib2 "$@"
910     headers="$1"
911     funcs="$2"
912     shift 2
913     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
914 }
915
916 check_pkg_config(){
917     log check_pkg_config "$@"
918     pkg="$1"
919     headers="$2"
920     funcs="$3"
921     shift 3
922     check_cmd $pkg_config --exists --print-errors $pkg || return
923     pkg_cflags=$($pkg_config --cflags $pkg)
924     pkg_libs=$($pkg_config --libs $pkg)
925     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
926         set_safe ${pkg}_cflags $pkg_cflags   &&
927         set_safe ${pkg}_libs   $pkg_libs
928 }
929
930 check_exec(){
931     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
932 }
933
934 check_exec_crash(){
935     code=$(cat)
936
937     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
938     # are safe but may not be available everywhere.  Thus we use
939     # raise(SIGTERM) instead.  The check is run in a subshell so we
940     # can redirect the "Terminated" message from the shell.  SIGBUS
941     # is not defined by standard C so it is used conditionally.
942
943     (check_exec "$@") >> $logfile 2>&1 <<EOF
944 #include <signal.h>
945 static void sighandler(int sig){
946     raise(SIGTERM);
947 }
948 int foo(void){
949     $code
950 }
951 int (*func_ptr)(void) = foo;
952 int main(void){
953     signal(SIGILL, sighandler);
954     signal(SIGFPE, sighandler);
955     signal(SIGSEGV, sighandler);
956 #ifdef SIGBUS
957     signal(SIGBUS, sighandler);
958 #endif
959     return func_ptr();
960 }
961 EOF
962 }
963
964 check_type(){
965     log check_type "$@"
966     headers=$1
967     type=$2
968     shift 2
969     disable_safe "$type"
970     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
971 }
972
973 check_struct(){
974     log check_struct "$@"
975     headers=$1
976     struct=$2
977     member=$3
978     shift 3
979     disable_safe "${struct}_${member}"
980     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
981         enable_safe "${struct}_${member}"
982 }
983
984 check_builtin(){
985     log check_builtin "$@"
986     name=$1
987     headers=$2
988     builtin=$3
989     shift 3
990     disable "$name"
991     check_code ld "$headers" "$builtin" "$@" && enable "$name"
992 }
993
994 require(){
995     name="$1"
996     header="$2"
997     func="$3"
998     shift 3
999     check_lib $header $func "$@" || die "ERROR: $name not found"
1000 }
1001
1002 require2(){
1003     name="$1"
1004     headers="$2"
1005     func="$3"
1006     shift 3
1007     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1008 }
1009
1010 require_pkg_config(){
1011     pkg="$1"
1012     check_pkg_config "$@" || die "ERROR: $pkg not found"
1013     add_cflags    $(get_safe ${pkg}_cflags)
1014     add_extralibs $(get_safe ${pkg}_libs)
1015 }
1016
1017 hostcc_e(){
1018     eval printf '%s\\n' $HOSTCC_E
1019 }
1020
1021 hostcc_o(){
1022     eval printf '%s\\n' $HOSTCC_O
1023 }
1024
1025 check_host_cc(){
1026     log check_host_cc "$@"
1027     cat > $TMPC
1028     log_file $TMPC
1029     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1030 }
1031
1032 check_host_cpp(){
1033     log check_host_cpp "$@"
1034     cat > $TMPC
1035     log_file $TMPC
1036     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1037 }
1038
1039 check_host_cppflags(){
1040     log check_host_cppflags "$@"
1041     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1042 int x;
1043 EOF
1044 }
1045
1046 check_host_cflags(){
1047     log check_host_cflags "$@"
1048     set -- $($host_cflags_filter "$@")
1049     check_host_cc "$@" <<EOF && append host_cflags "$@"
1050 int x;
1051 EOF
1052 }
1053
1054 check_host_cpp_condition(){
1055     log check_host_cpp_condition "$@"
1056     header=$1
1057     condition=$2
1058     shift 2
1059     check_host_cpp "$@" <<EOF
1060 #include <$header>
1061 #if !($condition)
1062 #error "unsatisfied condition: $condition"
1063 #endif
1064 EOF
1065 }
1066
1067 apply(){
1068     file=$1
1069     shift
1070     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1071 }
1072
1073 cp_if_changed(){
1074     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1075     mkdir -p "$(dirname $2)"
1076     $cp_f "$1" "$2"
1077 }
1078
1079 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1080 # system-dependent things.
1081
1082 COMPONENT_LIST="
1083     bsfs
1084     decoders
1085     demuxers
1086     encoders
1087     filters
1088     hwaccels
1089     indevs
1090     muxers
1091     outdevs
1092     parsers
1093     protocols
1094 "
1095
1096 EXAMPLE_LIST="
1097     output_example
1098     transcode_aac_example
1099 "
1100
1101 EXTERNAL_LIBRARY_LIST="
1102     avisynth
1103     bzlib
1104     frei0r
1105     gnutls
1106     libcdio
1107     libdc1394
1108     libfaac
1109     libfdk_aac
1110     libfreetype
1111     libgsm
1112     libilbc
1113     libmp3lame
1114     libopencore_amrnb
1115     libopencore_amrwb
1116     libopencv
1117     libopenjpeg
1118     libopus
1119     libpulse
1120     librtmp
1121     libschroedinger
1122     libspeex
1123     libtheora
1124     libvo_aacenc
1125     libvo_amrwbenc
1126     libvorbis
1127     libvpx
1128     libwavpack
1129     libwebp
1130     libx264
1131     libxavs
1132     libxvid
1133     openssl
1134     x11grab
1135     zlib
1136 "
1137
1138 HWACCEL_LIST="
1139     dxva2
1140     vaapi
1141     vda
1142     vdpau
1143 "
1144 LIBRARY_LIST="
1145     avcodec
1146     avdevice
1147     avfilter
1148     avformat
1149     avresample
1150     avutil
1151     swscale
1152 "
1153
1154 PROGRAM_LIST="
1155     avconv
1156     avplay
1157     avprobe
1158     avserver
1159 "
1160
1161 CONFIG_LIST="
1162     $COMPONENT_LIST
1163     $EXAMPLE_LIST
1164     $EXTERNAL_LIBRARY_LIST
1165     $HWACCEL_LIST
1166     $LIBRARY_LIST
1167     $PROGRAM_LIST
1168     dct
1169     doc
1170     error_resilience
1171     fft
1172     gpl
1173     gray
1174     hardcoded_tables
1175     lsp
1176     lzo
1177     mdct
1178     memalign_hack
1179     neon_clobber_test
1180     network
1181     nonfree
1182     pod2man
1183     pic
1184     rdft
1185     runtime_cpudetect
1186     safe_bitstream_reader
1187     shared
1188     small
1189     sram
1190     static
1191     swscale_alpha
1192     texi2html
1193     thumb
1194     version3
1195     xmm_clobber_test
1196 "
1197
1198 THREADS_LIST='
1199     pthreads
1200     w32threads
1201 '
1202
1203 ATOMICS_LIST='
1204     atomics_gcc
1205     atomics_suncc
1206     atomics_win32
1207 '
1208
1209 ARCH_LIST='
1210     aarch64
1211     alpha
1212     arm
1213     avr32
1214     avr32_ap
1215     avr32_uc
1216     bfin
1217     ia64
1218     m68k
1219     mips
1220     mips64
1221     parisc
1222     ppc
1223     ppc64
1224     s390
1225     sh4
1226     sparc
1227     sparc64
1228     tilegx
1229     tilepro
1230     tomi
1231     x86
1232     x86_32
1233     x86_64
1234 '
1235
1236 ARCH_EXT_LIST_ARM='
1237     armv5te
1238     armv6
1239     armv6t2
1240     neon
1241     vfp
1242     vfpv3
1243 '
1244
1245 ARCH_EXT_LIST_X86='
1246     amd3dnow
1247     amd3dnowext
1248     avx
1249     avx2
1250     fma4
1251     i686
1252     mmx
1253     mmxext
1254     sse
1255     sse2
1256     sse3
1257     sse4
1258     sse42
1259     ssse3
1260 '
1261
1262 ARCH_EXT_LIST="
1263     $ARCH_EXT_LIST_ARM
1264     $ARCH_EXT_LIST_X86
1265     altivec
1266     ppc4xx
1267     vis
1268 "
1269
1270 HAVE_LIST_CMDLINE='
1271     inline_asm
1272     symver
1273     yasm
1274 '
1275
1276 HAVE_LIST_PUB='
1277     bigendian
1278     fast_unaligned
1279 '
1280
1281 MATH_FUNCS="
1282     atanf
1283     atan2f
1284     cbrtf
1285     cosf
1286     exp2
1287     exp2f
1288     expf
1289     isinf
1290     isnan
1291     ldexpf
1292     llrint
1293     llrintf
1294     log2
1295     log2f
1296     log10f
1297     lrint
1298     lrintf
1299     powf
1300     rint
1301     round
1302     roundf
1303     sinf
1304     trunc
1305     truncf
1306 "
1307
1308 HAVE_LIST="
1309     $ARCH_EXT_LIST
1310     $(add_suffix _external $ARCH_EXT_LIST)
1311     $(add_suffix _inline   $ARCH_EXT_LIST)
1312     $HAVE_LIST_CMDLINE
1313     $HAVE_LIST_PUB
1314     $THREADS_LIST
1315     $ATOMICS_LIST
1316     $MATH_FUNCS
1317     aligned_malloc
1318     aligned_stack
1319     alsa_asoundlib_h
1320     altivec_h
1321     arpa_inet_h
1322     asm_mod_q
1323     asm_mod_y
1324     atomic_cas_ptr
1325     atomics_native
1326     attribute_may_alias
1327     attribute_packed
1328     cdio_paranoia_h
1329     cdio_paranoia_paranoia_h
1330     closesocket
1331     CommandLineToArgvW
1332     cpunop
1333     CryptGenRandom
1334     dcbzl
1335     dev_bktr_ioctl_bt848_h
1336     dev_bktr_ioctl_meteor_h
1337     dev_ic_bt8xx_h
1338     dev_video_bktr_ioctl_bt848_h
1339     dev_video_meteor_ioctl_meteor_h
1340     direct_h
1341     dlfcn_h
1342     dlopen
1343     dos_paths
1344     dxva_h
1345     ebp_available
1346     ebx_available
1347     fast_64bit
1348     fast_clz
1349     fast_cmov
1350     fcntl
1351     fork
1352     getaddrinfo
1353     gethrtime
1354     getopt
1355     GetProcessAffinityMask
1356     GetProcessMemoryInfo
1357     GetProcessTimes
1358     GetSystemTimeAsFileTime
1359     getrusage
1360     getservbyport
1361     gettimeofday
1362     gnu_as
1363     gsm_h
1364     ibm_asm
1365     inet_aton
1366     io_h
1367     inline_asm_labels
1368     isatty
1369     jack_port_get_latency_range
1370     ldbrx
1371     libc_msvcrt
1372     libdc1394_1
1373     libdc1394_2
1374     local_aligned_16
1375     local_aligned_8
1376     localtime_r
1377     loongson
1378     machine_ioctl_bt848_h
1379     machine_ioctl_meteor_h
1380     machine_rw_barrier
1381     malloc_h
1382     MapViewOfFile
1383     memalign
1384     MemoryBarrier
1385     mkstemp
1386     mm_empty
1387     mmap
1388     mprotect
1389     nanosleep
1390     poll_h
1391     posix_memalign
1392     pragma_deprecated
1393     rdtsc
1394     sched_getaffinity
1395     sdl
1396     SetConsoleTextAttribute
1397     setmode
1398     setrlimit
1399     Sleep
1400     sndio_h
1401     socklen_t
1402     soundcard_h
1403     strerror_r
1404     strptime
1405     strtok_r
1406     struct_addrinfo
1407     struct_group_source_req
1408     struct_ip_mreq_source
1409     struct_ipv6_mreq
1410     struct_pollfd
1411     struct_rusage_ru_maxrss
1412     struct_sockaddr_in6
1413     struct_sockaddr_sa_len
1414     struct_sockaddr_storage
1415     struct_v4l2_frmivalenum_discrete
1416     symver_asm_label
1417     symver_gnu_asm
1418     sync_val_compare_and_swap
1419     sysconf
1420     sysctl
1421     sys_mman_h
1422     sys_param_h
1423     sys_resource_h
1424     sys_select_h
1425     sys_soundcard_h
1426     sys_time_h
1427     sys_un_h
1428     sys_videoio_h
1429     threads
1430     unistd_h
1431     usleep
1432     vdpau_x11
1433     vfp_args
1434     VirtualAlloc
1435     windows_h
1436     winsock2_h
1437     xform_asm
1438     xlib
1439     xmm_clobbers
1440 "
1441
1442 # options emitted with CONFIG_ prefix but not available on the command line
1443 CONFIG_EXTRA="
1444     aandcttables
1445     ac3dsp
1446     audio_frame_queue
1447     dsputil
1448     gcrypt
1449     golomb
1450     gplv3
1451     h263dsp
1452     h264chroma
1453     h264dsp
1454     h264pred
1455     h264qpel
1456     hpeldsp
1457     huffman
1458     intrax8
1459     lgplv3
1460     lpc
1461     mpegaudio
1462     mpegaudiodsp
1463     mpegvideo
1464     mpegvideoenc
1465     nettle
1466     rangecoder
1467     riffdec
1468     riffenc
1469     rtpdec
1470     rtpenc_chain
1471     sinewin
1472     videodsp
1473     vp3dsp
1474 "
1475
1476 CMDLINE_SELECT="
1477     $ARCH_EXT_LIST
1478     $CONFIG_LIST
1479     $HAVE_LIST_CMDLINE
1480     $THREADS_LIST
1481     asm
1482     cross_compile
1483     debug
1484     extra_warnings
1485     logging
1486     lto
1487     optimizations
1488 "
1489
1490 PATHS_LIST='
1491     bindir
1492     datadir
1493     docdir
1494     incdir
1495     libdir
1496     mandir
1497     prefix
1498     shlibdir
1499 '
1500
1501 CMDLINE_SET="
1502     $PATHS_LIST
1503     ar
1504     arch
1505     as
1506     build_suffix
1507     cc
1508     cpu
1509     cross_prefix
1510     dep_cc
1511     extra_version
1512     host_cc
1513     host_cflags
1514     host_ld
1515     host_ldflags
1516     host_libs
1517     host_os
1518     ld
1519     logfile
1520     malloc_prefix
1521     nm
1522     optflags
1523     pkg_config
1524     random_seed
1525     samples
1526     sysinclude
1527     sysroot
1528     target_exec
1529     target_os
1530     target_path
1531     target_samples
1532     toolchain
1533 "
1534
1535 CMDLINE_APPEND="
1536     extra_cflags
1537     host_cppflags
1538 "
1539
1540 # code dependency declarations
1541
1542 # architecture extensions
1543
1544 armv5te_deps="arm"
1545 armv6_deps="arm"
1546 armv6t2_deps="arm"
1547 neon_deps_any="aarch64 arm"
1548 vfp_deps_any="aarch64 arm"
1549 vfpv3_deps="vfp"
1550
1551 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1552
1553 altivec_deps="ppc"
1554 ppc4xx_deps="ppc"
1555
1556 vis_deps="sparc"
1557
1558 cpunop_deps="i686"
1559 x86_64_select="i686"
1560 x86_64_suggest="fast_cmov"
1561
1562 amd3dnow_deps="mmx"
1563 amd3dnowext_deps="amd3dnow"
1564 i686_deps="x86"
1565 mmx_deps="x86"
1566 mmxext_deps="mmx"
1567 sse_deps="mmxext"
1568 sse2_deps="sse"
1569 sse3_deps="sse2"
1570 ssse3_deps="sse3"
1571 sse4_deps="ssse3"
1572 sse42_deps="sse4"
1573 avx_deps="sse42"
1574 fma4_deps="avx"
1575 avx2_deps="avx"
1576
1577 mmx_external_deps="yasm"
1578 mmx_inline_deps="inline_asm"
1579 mmx_suggest="mmx_external mmx_inline"
1580
1581 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1582     eval dep=\$${ext}_deps
1583     eval ${ext}_external_deps='"${dep}_external"'
1584     eval ${ext}_inline_deps='"${dep}_inline"'
1585     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1586 done
1587
1588 aligned_stack_if_any="aarch64 ppc x86"
1589 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1590 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1591 fast_unaligned_if_any="aarch64 ppc x86"
1592
1593 need_memalign="altivec neon sse"
1594
1595 # system capabilities
1596 log2_deps="!libc_msvcrt"
1597
1598 symver_if_any="symver_asm_label symver_gnu_asm"
1599
1600 # threading support
1601 atomics_gcc_if="sync_val_compare_and_swap"
1602 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1603 atomics_win32_if="MemoryBarrier"
1604 atomics_native_if_any="$ATOMICS_LIST"
1605 threads_if_any="$THREADS_LIST"
1606
1607 # subsystems
1608 dct_select="rdft"
1609 error_resilience_select="dsputil"
1610 lpc_select="dsputil"
1611 mdct_select="fft"
1612 rdft_select="fft"
1613 mpegaudio_select="mpegaudiodsp"
1614 mpegaudiodsp_select="dct"
1615 mpegvideo_select="dsputil hpeldsp videodsp"
1616 mpegvideoenc_select="mpegvideo"
1617
1618 # decoders / encoders
1619 aac_decoder_select="mdct sinewin"
1620 aac_encoder_select="audio_frame_queue mdct sinewin"
1621 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1622 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1623 ac3_encoder_select="mdct ac3dsp dsputil"
1624 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1625 aic_decoder_select="dsputil golomb"
1626 alac_encoder_select="lpc"
1627 als_decoder_select="dsputil"
1628 amrnb_decoder_select="lsp"
1629 amrwb_decoder_select="lsp"
1630 amv_decoder_select="dsputil hpeldsp"
1631 ape_decoder_select="dsputil"
1632 asv1_decoder_select="dsputil"
1633 asv1_encoder_select="dsputil"
1634 asv2_decoder_select="dsputil"
1635 asv2_encoder_select="dsputil"
1636 atrac1_decoder_select="mdct sinewin"
1637 atrac3_decoder_select="mdct"
1638 atrac3p_decoder_select="mdct sinewin"
1639 bink_decoder_select="dsputil hpeldsp"
1640 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1641 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1642 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1643 cllc_decoder_select="dsputil"
1644 comfortnoise_encoder_select="lpc"
1645 cook_decoder_select="dsputil mdct sinewin"
1646 cscd_decoder_select="lzo"
1647 cscd_decoder_suggest="zlib"
1648 dca_decoder_select="mdct"
1649 dnxhd_decoder_select="dsputil"
1650 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1651 dvvideo_decoder_select="dsputil"
1652 dvvideo_encoder_select="dsputil"
1653 dxa_decoder_deps="zlib"
1654 eac3_decoder_select="ac3_decoder"
1655 eac3_encoder_select="ac3_encoder"
1656 eamad_decoder_select="aandcttables dsputil mpegvideo"
1657 eatgq_decoder_select="aandcttables dsputil"
1658 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1659 ffv1_decoder_select="dsputil golomb rangecoder"
1660 ffv1_encoder_select="dsputil rangecoder"
1661 ffvhuff_decoder_select="dsputil"
1662 ffvhuff_encoder_select="dsputil huffman"
1663 fic_decoder_select="dsputil golomb"
1664 flac_decoder_select="golomb"
1665 flac_encoder_select="dsputil golomb lpc"
1666 flashsv_decoder_deps="zlib"
1667 flashsv_encoder_deps="zlib"
1668 flashsv2_decoder_deps="zlib"
1669 flv_decoder_select="h263_decoder"
1670 flv_encoder_select="h263_encoder"
1671 fourxm_decoder_select="dsputil"
1672 fraps_decoder_select="dsputil huffman"
1673 g2m_decoder_deps="zlib"
1674 g2m_decoder_select="dsputil"
1675 h261_decoder_select="error_resilience mpegvideo"
1676 h261_encoder_select="aandcttables mpegvideoenc"
1677 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo"
1678 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1679 h263i_decoder_select="h263_decoder"
1680 h263p_encoder_select="h263_encoder"
1681 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1682 h264_decoder_suggest="error_resilience"
1683 hevc_decoder_select="dsputil golomb videodsp"
1684 huffyuv_decoder_select="dsputil"
1685 huffyuv_encoder_select="dsputil huffman"
1686 iac_decoder_select="dsputil fft mdct sinewin"
1687 imc_decoder_select="dsputil fft mdct sinewin"
1688 indeo3_decoder_select="hpeldsp"
1689 interplay_video_decoder_select="hpeldsp"
1690 jpegls_decoder_select="dsputil golomb hpeldsp"
1691 jpegls_encoder_select="golomb"
1692 jv_decoder_select="dsputil"
1693 lagarith_decoder_select="dsputil"
1694 ljpeg_encoder_select="aandcttables mpegvideoenc"
1695 loco_decoder_select="golomb"
1696 mdec_decoder_select="dsputil error_resilience mpegvideo"
1697 metasound_decoder_select="lsp mdct sinewin"
1698 mimic_decoder_select="dsputil hpeldsp"
1699 mjpeg_decoder_select="dsputil hpeldsp"
1700 mjpegb_decoder_select="dsputil hpeldsp"
1701 mjpeg_encoder_select="aandcttables dsputil mpegvideoenc"
1702 mlp_decoder_select="dsputil mlp_parser"
1703 motionpixels_decoder_select="dsputil"
1704 mp1_decoder_select="mpegaudio"
1705 mp1float_decoder_select="mpegaudio"
1706 mp2_decoder_select="mpegaudio"
1707 mp2float_decoder_select="mpegaudio"
1708 mp3_decoder_select="mpegaudio"
1709 mp3adu_decoder_select="mpegaudio"
1710 mp3adufloat_decoder_select="mpegaudio"
1711 mp3float_decoder_select="mpegaudio"
1712 mp3on4_decoder_select="mpegaudio"
1713 mp3on4float_decoder_select="mpegaudio"
1714 mpc7_decoder_select="dsputil mpegaudiodsp"
1715 mpc8_decoder_select="dsputil mpegaudiodsp"
1716 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1717 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1718 mpeg1video_decoder_select="error_resilience mpegvideo"
1719 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1720 mpeg2video_decoder_select="error_resilience mpegvideo"
1721 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1722 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1723 mpeg4_encoder_select="h263_encoder"
1724 msmpeg4v1_decoder_select="h263_decoder"
1725 msmpeg4v2_decoder_select="h263_decoder"
1726 msmpeg4v2_encoder_select="h263_encoder"
1727 msmpeg4v3_decoder_select="h263_decoder"
1728 msmpeg4v3_encoder_select="h263_encoder"
1729 mss2_decoder_select="error_resilience vc1_decoder"
1730 mxpeg_decoder_select="dsputil hpeldsp"
1731 nellymoser_decoder_select="mdct sinewin"
1732 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1733 nuv_decoder_select="dsputil lzo"
1734 png_decoder_deps="zlib"
1735 png_decoder_select="dsputil"
1736 png_encoder_deps="zlib"
1737 png_encoder_select="dsputil"
1738 prores_decoder_select="dsputil"
1739 prores_encoder_select="dsputil"
1740 qcelp_decoder_select="lsp"
1741 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1742 ra_144_encoder_select="audio_frame_queue lpc"
1743 ralf_decoder_select="golomb"
1744 rv10_decoder_select="error_resilience h263_decoder h263dsp"
1745 rv10_encoder_select="h263_encoder"
1746 rv20_decoder_select="error_resilience h263_decoder h263dsp"
1747 rv20_encoder_select="h263_encoder"
1748 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1749 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1750 shorten_decoder_select="golomb"
1751 sipr_decoder_select="lsp"
1752 sp5x_decoder_select="dsputil hpeldsp"
1753 svq1_decoder_select="hpeldsp"
1754 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1755 svq3_decoder_select="golomb h264chroma h264dsp h264pred h264qpel hpeldsp mpegvideo videodsp"
1756 svq3_decoder_suggest="error_resilience zlib"
1757 tak_decoder_select="dsputil"
1758 theora_decoder_select="vp3_decoder"
1759 tiff_decoder_suggest="zlib"
1760 tiff_encoder_suggest="zlib"
1761 thp_decoder_select="dsputil hpeldsp"
1762 truehd_decoder_select="mlp_decoder"
1763 truemotion2_decoder_select="dsputil"
1764 truespeech_decoder_select="dsputil"
1765 tscc_decoder_deps="zlib"
1766 twinvq_decoder_select="mdct lsp sinewin"
1767 utvideo_decoder_select="dsputil"
1768 utvideo_encoder_select="dsputil huffman"
1769 vble_decoder_select="dsputil"
1770 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel intrax8"
1771 vc1image_decoder_select="vc1_decoder"
1772 vorbis_decoder_select="mdct"
1773 vorbis_encoder_select="mdct"
1774 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1775 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1776 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1777 vp6a_decoder_select="vp6_decoder"
1778 vp6f_decoder_select="vp6_decoder"
1779 vp8_decoder_select="h264pred videodsp"
1780 vp9_decoder_select="videodsp"
1781 webp_decoder_select="vp8_decoder"
1782 wmapro_decoder_select="mdct sinewin"
1783 wmav1_decoder_select="mdct sinewin"
1784 wmav1_encoder_select="mdct sinewin"
1785 wmav2_decoder_select="mdct sinewin"
1786 wmav2_encoder_select="mdct sinewin"
1787 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1788 wmv1_decoder_select="h263_decoder"
1789 wmv1_encoder_select="h263_encoder"
1790 wmv2_decoder_select="h263_decoder intrax8 videodsp"
1791 wmv2_encoder_select="h263_encoder"
1792 wmv3_decoder_select="vc1_decoder"
1793 wmv3image_decoder_select="wmv3_decoder"
1794 zerocodec_decoder_deps="zlib"
1795 zlib_decoder_deps="zlib"
1796 zlib_encoder_deps="zlib"
1797 zmbv_decoder_deps="zlib"
1798 zmbv_encoder_deps="zlib"
1799
1800 # hardware accelerators
1801 dxva2_deps="dxva2api_h"
1802 vaapi_deps="va_va_h"
1803 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1804 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1805 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1806
1807 h263_vaapi_hwaccel_deps="vaapi"
1808 h263_vaapi_hwaccel_select="h263_decoder"
1809 h263_vdpau_hwaccel_deps="vdpau"
1810 h263_vdpau_hwaccel_select="h263_decoder"
1811 h264_dxva2_hwaccel_deps="dxva2"
1812 h264_dxva2_hwaccel_select="h264_decoder"
1813 h264_vaapi_hwaccel_deps="vaapi"
1814 h264_vaapi_hwaccel_select="h264_decoder"
1815 h264_vda_hwaccel_deps="vda"
1816 h264_vda_hwaccel_select="h264_decoder"
1817 h264_vdpau_hwaccel_deps="vdpau"
1818 h264_vdpau_hwaccel_select="h264_decoder"
1819 mpeg1_vdpau_hwaccel_deps="vdpau"
1820 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1821 mpeg2_dxva2_hwaccel_deps="dxva2"
1822 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1823 mpeg2_vaapi_hwaccel_deps="vaapi"
1824 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1825 mpeg2_vdpau_hwaccel_deps="vdpau"
1826 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1827 mpeg4_vaapi_hwaccel_deps="vaapi"
1828 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1829 mpeg4_vdpau_hwaccel_deps="vdpau"
1830 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1831 vc1_dxva2_hwaccel_deps="dxva2"
1832 vc1_dxva2_hwaccel_select="vc1_decoder"
1833 vc1_vaapi_hwaccel_deps="vaapi"
1834 vc1_vaapi_hwaccel_select="vc1_decoder"
1835 vc1_vdpau_hwaccel_deps="vdpau"
1836 vc1_vdpau_hwaccel_select="vc1_decoder"
1837 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1838 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1839 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1840
1841 # parsers
1842 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1843 mpeg4video_parser_select="error_resilience mpegvideo"
1844 mpegvideo_parser_select="error_resilience mpegvideo"
1845 vc1_parser_select="mpegvideo"
1846
1847 # external libraries
1848 libfaac_encoder_deps="libfaac"
1849 libfaac_encoder_select="audio_frame_queue"
1850 libfdk_aac_decoder_deps="libfdk_aac"
1851 libfdk_aac_encoder_deps="libfdk_aac"
1852 libfdk_aac_encoder_select="audio_frame_queue"
1853 libgsm_decoder_deps="libgsm"
1854 libgsm_encoder_deps="libgsm"
1855 libgsm_ms_decoder_deps="libgsm"
1856 libgsm_ms_encoder_deps="libgsm"
1857 libilbc_decoder_deps="libilbc"
1858 libilbc_encoder_deps="libilbc"
1859 libmp3lame_encoder_deps="libmp3lame"
1860 libmp3lame_encoder_select="audio_frame_queue"
1861 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1862 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1863 libopencore_amrnb_encoder_select="audio_frame_queue"
1864 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1865 libopenjpeg_decoder_deps="libopenjpeg"
1866 libopenjpeg_encoder_deps="libopenjpeg"
1867 libopus_decoder_deps="libopus"
1868 libopus_encoder_deps="libopus"
1869 libopus_encoder_select="audio_frame_queue"
1870 libschroedinger_decoder_deps="libschroedinger"
1871 libschroedinger_encoder_deps="libschroedinger"
1872 libspeex_decoder_deps="libspeex"
1873 libspeex_encoder_deps="libspeex"
1874 libspeex_encoder_select="audio_frame_queue"
1875 libtheora_encoder_deps="libtheora"
1876 libvo_aacenc_encoder_deps="libvo_aacenc"
1877 libvo_aacenc_encoder_select="audio_frame_queue"
1878 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1879 libvorbis_encoder_deps="libvorbis"
1880 libvorbis_encoder_select="audio_frame_queue"
1881 libvpx_vp8_decoder_deps="libvpx"
1882 libvpx_vp8_encoder_deps="libvpx"
1883 libvpx_vp9_decoder_deps="libvpx"
1884 libvpx_vp9_encoder_deps="libvpx"
1885 libwavpack_encoder_deps="libwavpack"
1886 libwebp_encoder_deps="libwebp"
1887 libx264_encoder_deps="libx264"
1888 libxavs_encoder_deps="libxavs"
1889 libxvid_encoder_deps="libxvid"
1890
1891 # demuxers / muxers
1892 ac3_demuxer_select="ac3_parser"
1893 asf_demuxer_select="riffdec"
1894 asf_muxer_select="riffenc"
1895 asf_stream_muxer_select="asf_muxer"
1896 avi_demuxer_select="riffdec"
1897 avi_muxer_select="riffenc"
1898 avisynth_demuxer_deps="avisynth"
1899 avisynth_demuxer_select="riffdec"
1900 caf_demuxer_select="riffdec"
1901 dirac_demuxer_select="dirac_parser"
1902 dxa_demuxer_select="riffdec"
1903 eac3_demuxer_select="ac3_parser"
1904 f4v_muxer_select="mov_muxer"
1905 flac_demuxer_select="flac_parser"
1906 hds_muxer_select="flv_muxer"
1907 hls_muxer_select="mpegts_muxer"
1908 ipod_muxer_select="mov_muxer"
1909 ismv_muxer_select="mov_muxer"
1910 matroska_audio_muxer_select="matroska_muxer"
1911 matroska_demuxer_select="riffdec"
1912 matroska_demuxer_suggest="bzlib lzo zlib"
1913 matroska_muxer_select="riffenc"
1914 mmf_muxer_select="riffenc"
1915 mov_demuxer_select="riffdec"
1916 mov_demuxer_suggest="zlib"
1917 mov_muxer_select="riffenc rtpenc_chain"
1918 mp3_demuxer_select="mpegaudio_parser"
1919 mp4_muxer_select="mov_muxer"
1920 mpegts_muxer_select="adts_muxer latm_muxer"
1921 mpegtsraw_demuxer_select="mpegts_demuxer"
1922 mxf_d10_muxer_select="mxf_muxer"
1923 nut_muxer_select="riffenc"
1924 nuv_demuxer_select="riffdec"
1925 ogg_demuxer_select="golomb"
1926 psp_muxer_select="mov_muxer"
1927 rtp_demuxer_select="sdp_demuxer"
1928 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1929 rtsp_demuxer_select="http_protocol rtpdec"
1930 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
1931 sap_demuxer_select="sdp_demuxer"
1932 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
1933 sdp_demuxer_select="rtpdec"
1934 smoothstreaming_muxer_select="ismv_muxer"
1935 spdif_muxer_select="aac_parser"
1936 tak_demuxer_select="tak_parser"
1937 tg2_muxer_select="mov_muxer"
1938 tgp_muxer_select="mov_muxer"
1939 w64_demuxer_select="wav_demuxer"
1940 wav_demuxer_select="riffdec"
1941 wav_muxer_select="riffenc"
1942 webm_muxer_select="riffenc"
1943 wtv_demuxer_select="riffdec"
1944 xmv_demuxer_select="riffdec"
1945 xwma_demuxer_select="riffdec"
1946
1947 # indevs / outdevs
1948 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1949 alsa_outdev_deps="alsa_asoundlib_h"
1950 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1951 dv1394_indev_deps="dv1394"
1952 dv1394_indev_select="dv_demuxer"
1953 fbdev_indev_deps="linux_fb_h"
1954 jack_indev_deps="jack_jack_h pthreads"
1955 libcdio_indev_deps="libcdio"
1956 libdc1394_indev_deps="libdc1394"
1957 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1958 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1959 pulse_indev_deps="libpulse"
1960 sndio_indev_deps="sndio_h"
1961 sndio_outdev_deps="sndio_h"
1962 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1963 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1964 vfwcap_indev_extralibs="-lavicap32"
1965 x11grab_indev_deps="x11grab XShmCreateImage"
1966
1967 # protocols
1968 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
1969 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
1970 ffrtmpcrypt_protocol_select="tcp_protocol"
1971 ffrtmphttp_protocol_deps="!librtmp_protocol"
1972 ffrtmphttp_protocol_select="http_protocol"
1973 gopher_protocol_select="network"
1974 httpproxy_protocol_select="tcp_protocol"
1975 http_protocol_select="tcp_protocol"
1976 https_protocol_select="tls_protocol"
1977 librtmp_protocol_deps="librtmp"
1978 librtmpe_protocol_deps="librtmp"
1979 librtmps_protocol_deps="librtmp"
1980 librtmpt_protocol_deps="librtmp"
1981 librtmpte_protocol_deps="librtmp"
1982 mmsh_protocol_select="http_protocol"
1983 mmst_protocol_select="network"
1984 rtmp_protocol_deps="!librtmp_protocol"
1985 rtmp_protocol_select="tcp_protocol"
1986 rtmpe_protocol_select="ffrtmpcrypt_protocol"
1987 rtmps_protocol_deps="!librtmp_protocol"
1988 rtmps_protocol_select="tls_protocol"
1989 rtmpt_protocol_select="ffrtmphttp_protocol"
1990 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
1991 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
1992 rtp_protocol_select="udp_protocol"
1993 sctp_protocol_deps="struct_sctp_event_subscribe"
1994 sctp_protocol_select="network"
1995 srtp_protocol_select="rtp_protocol"
1996 tcp_protocol_select="network"
1997 tls_protocol_deps_any="openssl gnutls"
1998 tls_protocol_select="tcp_protocol"
1999 udp_protocol_select="network"
2000 unix_protocol_deps="sys_un_h"
2001 unix_protocol_select="network"
2002
2003 # filters
2004 blackframe_filter_deps="gpl"
2005 boxblur_filter_deps="gpl"
2006 cropdetect_filter_deps="gpl"
2007 delogo_filter_deps="gpl"
2008 drawtext_filter_deps="libfreetype"
2009 frei0r_filter_deps="frei0r dlopen strtok_r"
2010 frei0r_filter_extralibs='$ldl'
2011 frei0r_src_filter_deps="frei0r dlopen strtok_r"
2012 frei0r_src_filter_extralibs='$ldl'
2013 hqdn3d_filter_deps="gpl"
2014 interlace_filter_deps="gpl"
2015 resample_filter_deps="avresample"
2016 ocv_filter_deps="libopencv"
2017 scale_filter_deps="swscale"
2018
2019 # examples
2020 output_example_deps="avcodec avformat avutil swscale"
2021 transcode_aac_example_deps="avcodec avformat avresample"
2022
2023 # libraries
2024 avcodec_deps="avutil"
2025 avdevice_deps="avutil avcodec avformat"
2026 avfilter_deps="avutil"
2027 avformat_deps="avutil avcodec"
2028 avresample_deps="avutil"
2029 swscale_deps="avutil"
2030
2031 # programs
2032 avconv_deps="avcodec avfilter avformat avresample swscale"
2033 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2034                fps_filter null_filter resample_filter scale_filter
2035                setpts_filter trim_filter"
2036 avplay_deps="avcodec avformat avresample swscale sdl"
2037 avplay_select="rdft"
2038 avprobe_deps="avcodec avformat"
2039 avserver_deps="avformat fork !shared"
2040 avserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2041 avserver_extralibs='$ldl'
2042
2043 # documentation
2044 pod2man_deps="doc"
2045 texi2html_deps="doc"
2046
2047 # default parameters
2048
2049 logfile="config.log"
2050
2051 # installation paths
2052 prefix_default="/usr/local"
2053 bindir_default='${prefix}/bin'
2054 datadir_default='${prefix}/share/avconv'
2055 docdir_default='${prefix}/share/doc/libav'
2056 incdir_default='${prefix}/include'
2057 libdir_default='${prefix}/lib'
2058 mandir_default='${prefix}/share/man'
2059 shlibdir_default="$libdir_default"
2060
2061 # toolchain
2062 ar_default="ar"
2063 cc_default="gcc"
2064 host_cc_default="gcc"
2065 cp_f="cp -f"
2066 ln_s="ln -s -f"
2067 nm_default="nm -g"
2068 objformat="elf"
2069 pkg_config_default=pkg-config
2070 ranlib="ranlib"
2071 strip="strip"
2072 yasmexe="yasm"
2073
2074 nogas=":"
2075
2076 # machine
2077 arch_default=$(uname -m)
2078 cpu="generic"
2079
2080 # OS
2081 target_os_default=$(tolower $(uname -s))
2082 host_os=$target_os_default
2083
2084 # configurable options
2085 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2086
2087 enable asm
2088 enable debug
2089 enable doc
2090 enable optimizations
2091 enable safe_bitstream_reader
2092 enable static
2093 enable swscale_alpha
2094
2095 # By default, enable only those hwaccels that have no external dependencies.
2096 enable dxva2 vdpau
2097
2098 # build settings
2099 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2100 LIBPREF="lib"
2101 LIBSUF=".a"
2102 FULLNAME='$(NAME)$(BUILDSUF)'
2103 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2104 SLIBPREF="lib"
2105 SLIBSUF=".so"
2106 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2107 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2108 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2109 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2110 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2111 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2112
2113 asflags_filter=echo
2114 cflags_filter=echo
2115 ldflags_filter=echo
2116
2117 AS_C='-c'
2118 AS_O='-o $@'
2119 CC_C='-c'
2120 CC_E='-E -o $@'
2121 CC_O='-o $@'
2122 LD_O='-o $@'
2123 LD_LIB='-l%'
2124 LD_PATH='-L'
2125 HOSTCC_C='-c'
2126 HOSTCC_E='-E -o $@'
2127 HOSTCC_O='-o $@'
2128 HOSTLD_O='-o $@'
2129
2130 host_libs='-lm'
2131 host_cflags_filter=echo
2132 host_ldflags_filter=echo
2133
2134 target_path='$(CURDIR)'
2135
2136 # since the object filename is not given with the -MM flag, the compiler
2137 # is only able to print the basename, and we must add the path ourselves
2138 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2139 DEPFLAGS='-MM'
2140
2141 # find source path
2142 if test -f configure; then
2143     source_path=.
2144 else
2145     source_path=$(cd $(dirname "$0"); pwd)
2146     echo "$source_path" | grep -q '[[:blank:]]' &&
2147         die "Out of tree builds are impossible with whitespace in source path."
2148     test -e "$source_path/config.h" &&
2149         die "Out of tree builds are impossible with config.h in source dir."
2150 fi
2151
2152 for v in "$@"; do
2153     r=${v#*=}
2154     l=${v%"$r"}
2155     r=$(sh_quote "$r")
2156     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2157 done
2158
2159 find_things(){
2160     thing=$1
2161     pattern=$2
2162     file=$source_path/$3
2163     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2164 }
2165
2166 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2167 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2168 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2169 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2170 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2171 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2172 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2173 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2174 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2175 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2176 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2177
2178 ALL_COMPONENTS="
2179     $BSF_LIST
2180     $DECODER_LIST
2181     $DEMUXER_LIST
2182     $ENCODER_LIST
2183     $FILTER_LIST
2184     $HWACCEL_LIST
2185     $INDEV_LIST
2186     $MUXER_LIST
2187     $OUTDEV_LIST
2188     $PARSER_LIST
2189     $PROTOCOL_LIST
2190 "
2191
2192 for n in $COMPONENT_LIST; do
2193     v=$(toupper ${n%s})_LIST
2194     eval enable \$$v
2195     eval ${n}_if_any="\$$v"
2196 done
2197
2198 enable $ARCH_EXT_LIST
2199
2200 die_unknown(){
2201     echo "Unknown option \"$1\"."
2202     echo "See $0 --help for available options."
2203     exit 1
2204 }
2205
2206 print_3_columns() {
2207     cat | tr ' ' '\n' | sort | pr -r -3 -t
2208 }
2209
2210 show_list() {
2211     suffix=_$1
2212     shift
2213     echo $* | sed s/$suffix//g | print_3_columns
2214     exit 0
2215 }
2216
2217 rand_list(){
2218     IFS=', '
2219     set -- $*
2220     unset IFS
2221     for thing; do
2222         comp=${thing%:*}
2223         prob=${thing#$comp}
2224         prob=${prob#:}
2225         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2226         echo "prob ${prob:-0.5}"
2227         printf '%s\n' $comp
2228     done
2229 }
2230
2231 do_random(){
2232     action=$1
2233     shift
2234     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2235     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2236 }
2237
2238 for opt do
2239     optval="${opt#*=}"
2240     case "$opt" in
2241         --extra-ldflags=*)
2242             add_ldflags $optval
2243         ;;
2244         --extra-libs=*)
2245             add_extralibs $optval
2246         ;;
2247         --disable-devices)
2248             disable $INDEV_LIST $OUTDEV_LIST
2249         ;;
2250         --enable-debug=*)
2251             debuglevel="$optval"
2252         ;;
2253         --disable-programs)
2254             disable $PROGRAM_LIST
2255         ;;
2256         --disable-everything)
2257             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2258         ;;
2259         --disable-all)
2260             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2261             disable $LIBRARY_LIST $PROGRAM_LIST doc
2262         ;;
2263         --enable-random|--disable-random)
2264             action=${opt%%-random}
2265             do_random ${action#--} $COMPONENT_LIST
2266         ;;
2267         --enable-random=*|--disable-random=*)
2268             action=${opt%%-random=*}
2269             do_random ${action#--} $optval
2270         ;;
2271         --enable-*=*|--disable-*=*)
2272             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2273             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2274             eval list=\$$(toupper $thing)_LIST
2275             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2276             $action $(filter "$name" $list)
2277         ;;
2278         --enable-?*|--disable-?*)
2279             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2280             if is_in $option $COMPONENT_LIST; then
2281                 test $action = disable && action=unset
2282                 eval $action \$$(toupper ${option%s})_LIST
2283             elif is_in $option $CMDLINE_SELECT; then
2284                 $action $option
2285             else
2286                 die_unknown $opt
2287             fi
2288         ;;
2289         --list-*)
2290             NAME="${opt#--list-}"
2291             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2292             NAME=${NAME%s}
2293             eval show_list $NAME \$$(toupper $NAME)_LIST
2294         ;;
2295         --help|-h) show_help
2296         ;;
2297         *)
2298             optname="${opt%%=*}"
2299             optname="${optname#--}"
2300             optname=$(echo "$optname" | sed 's/-/_/g')
2301             if is_in $optname $CMDLINE_SET; then
2302                 eval $optname='$optval'
2303             elif is_in $optname $CMDLINE_APPEND; then
2304                 append $optname "$optval"
2305             else
2306                 die_unknown $opt
2307             fi
2308         ;;
2309     esac
2310 done
2311
2312 disabled logging && logfile=/dev/null
2313
2314 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2315 set >> $logfile
2316
2317 test -n "$cross_prefix" && enable cross_compile
2318
2319 if enabled cross_compile; then
2320     test -n "$arch" && test -n "$target_os" ||
2321         die "Must specify target arch and OS when cross-compiling"
2322 fi
2323
2324 ar_default="${cross_prefix}${ar_default}"
2325 cc_default="${cross_prefix}${cc_default}"
2326 nm_default="${cross_prefix}${nm_default}"
2327 pkg_config_default="${cross_prefix}${pkg_config_default}"
2328 ranlib="${cross_prefix}${ranlib}"
2329 strip="${cross_prefix}${strip}"
2330
2331 sysinclude_default="${sysroot}/usr/include"
2332
2333 case "$toolchain" in
2334     clang-asan)
2335         cc_default="clang"
2336         add_cflags  -fsanitize=address
2337         add_ldflags -fsanitize=address
2338     ;;
2339     clang-tsan)
2340         cc_default="clang"
2341         add_cflags  -fsanitize=thread -pie
2342         add_ldflags -fsanitize=thread -pie
2343     ;;
2344     gcc-asan)
2345         cc_default="gcc"
2346         add_cflags  -fsanitize=address
2347         add_ldflags -fsanitize=address
2348     ;;
2349     gcc-tsan)
2350         cc_default="gcc"
2351         add_cflags  -fsanitize=thread -pie -fPIC
2352         add_ldflags -fsanitize=thread -pie -fPIC
2353     ;;
2354     valgrind-massif)
2355         target_exec_default="valgrind"
2356         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2357     ;;
2358     valgrind-memcheck)
2359         target_exec_default="valgrind"
2360         target_exec_args="--track-origins=yes --leak-check=full"
2361     ;;
2362     msvc)
2363         # Check whether the current MSVC version needs the C99 converter.
2364         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2365         # support enough of C99 to build libav. Default to the new
2366         # behaviour if the regexp was unable to match anything, since this
2367         # successfully parses the version number of existing supported
2368         # versions that require the converter (MSVC 2010 and 2012).
2369         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2370         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2371             cc_default="cl"
2372         else
2373             cc_default="c99wrap cl"
2374         fi
2375         ld_default="link"
2376         nm_default="dumpbin -symbols"
2377         ar_default="lib"
2378         target_os_default="win32"
2379         # Use a relative path for TMPDIR. This makes sure all the
2380         # ffconf temp files are written with a relative path, avoiding
2381         # issues with msys/win32 path conversion for MSVC parameters
2382         # such as -Fo<file> or -out:<file>.
2383         TMPDIR=.
2384     ;;
2385     icl)
2386         cc_default="icl"
2387         ld_default="xilink"
2388         nm_default="dumpbin -symbols"
2389         ar_default="xilib"
2390         target_os_default="win32"
2391         TMPDIR=.
2392     ;;
2393     gcov)
2394         add_cflags  -fprofile-arcs -ftest-coverage
2395         add_ldflags -fprofile-arcs -ftest-coverage
2396     ;;
2397     hardened)
2398         add_cflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2399         add_ldflags -Wl,-z,relro -Wl,-z,now
2400     ;;
2401     ?*)
2402         die "Unknown toolchain $toolchain"
2403     ;;
2404 esac
2405
2406 set_default arch cc pkg_config sysinclude target_exec target_os
2407 enabled cross_compile || host_cc_default=$cc
2408 set_default host_cc
2409
2410 if ! $pkg_config --version >/dev/null 2>&1; then
2411     warn "$pkg_config not found, library detection may fail."
2412     pkg_config=false
2413 fi
2414
2415 exesuf() {
2416     case $1 in
2417         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2418     esac
2419 }
2420
2421 EXESUF=$(exesuf $target_os)
2422 HOSTEXESUF=$(exesuf $host_os)
2423
2424 # set temporary file name
2425 : ${TMPDIR:=$TEMPDIR}
2426 : ${TMPDIR:=$TMP}
2427 : ${TMPDIR:=/tmp}
2428
2429 if ! check_cmd mktemp -u XXXXXX; then
2430     # simple replacement for missing mktemp
2431     # NOT SAFE FOR GENERAL USE
2432     mktemp(){
2433         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2434     }
2435 fi
2436
2437 tmpfile(){
2438     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2439         (set -C; exec > $tmp) 2>/dev/null ||
2440         die "Unable to create temporary file in $TMPDIR."
2441     append TMPFILES $tmp
2442     eval $1=$tmp
2443 }
2444
2445 trap 'rm -f -- $TMPFILES' EXIT
2446
2447 tmpfile TMPASM .asm
2448 tmpfile TMPC   .c
2449 tmpfile TMPE   $EXESUF
2450 tmpfile TMPH   .h
2451 tmpfile TMPO   .o
2452 tmpfile TMPS   .S
2453 tmpfile TMPSH  .sh
2454 tmpfile TMPV   .ver
2455
2456 unset -f mktemp
2457
2458 chmod +x $TMPE
2459
2460 # make sure we can execute files in $TMPDIR
2461 cat > $TMPSH 2>> $logfile <<EOF
2462 #! /bin/sh
2463 EOF
2464 chmod +x $TMPSH >> $logfile 2>&1
2465 if ! $TMPSH >> $logfile 2>&1; then
2466     cat <<EOF
2467 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2468 variable to another directory and make sure that it is not mounted noexec.
2469 EOF
2470     die "Sanity test failed."
2471 fi
2472
2473 ccc_flags(){
2474     for flag; do
2475         case $flag in
2476             -std=c99)           echo -c99                       ;;
2477             -mcpu=*)            echo -arch ${flag#*=}           ;;
2478             -mieee)             echo -ieee                      ;;
2479             -O*|-fast)          echo $flag                      ;;
2480             -fno-math-errno)    echo -assume nomath_errno       ;;
2481             -g)                 echo -g3                        ;;
2482             -Wall)              echo -msg_enable level2         ;;
2483             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2484             -Wl,*)              echo $flag                      ;;
2485             -f*|-W*)                                            ;;
2486             *)                  echo $flag                      ;;
2487         esac
2488    done
2489 }
2490
2491 cparser_flags(){
2492     for flag; do
2493         case $flag in
2494             -Wno-switch)             echo -Wno-switch-enum ;;
2495             -Wno-format-zero-length) ;;
2496             -Wdisabled-optimization) ;;
2497             -Wno-pointer-sign)       echo -Wno-other ;;
2498             *)                       echo $flag ;;
2499         esac
2500     done
2501 }
2502
2503 msvc_common_flags(){
2504     for flag; do
2505         case $flag in
2506             # In addition to specifying certain flags under the compiler
2507             # specific filters, they must be specified here as well or else the
2508             # generic catch all at the bottom will print the original flag.
2509             -Wall)                ;;
2510             -std=c99)             ;;
2511             # Common flags
2512             -fomit-frame-pointer) ;;
2513             -g)                   echo -Z7 ;;
2514             -fno-math-errno)      ;;
2515             -fno-common)          ;;
2516             -fno-signed-zeros)    ;;
2517             -fPIC)                ;;
2518             -mthumb)              ;;
2519             -march=*)             ;;
2520             -lz)                  echo zlib.lib ;;
2521             -lavifil32)           echo vfw32.lib ;;
2522             -lavicap32)           echo vfw32.lib user32.lib ;;
2523             -l*)                  echo ${flag#-l}.lib ;;
2524             *)                    echo $flag ;;
2525         esac
2526     done
2527 }
2528
2529 msvc_flags(){
2530     msvc_common_flags "$@"
2531     for flag; do
2532         case $flag in
2533             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2534                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2535                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2536                                        -wd4273 ;;
2537         esac
2538     done
2539 }
2540
2541 icl_flags(){
2542     msvc_common_flags "$@"
2543     for flag; do
2544         case $flag in
2545             # Despite what Intel's documentation says -Wall, which is supported
2546             # on Windows, does enable remarks so disable them here.
2547             -Wall)                echo $flag -Qdiag-disable:remark ;;
2548             -std=c99)             echo -Qstd=c99 ;;
2549         esac
2550     done
2551 }
2552
2553 pgi_flags(){
2554     for flag; do
2555         case $flag in
2556             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2557             -fomit-frame-pointer) echo -Mnoframe ;;
2558             -g)                   echo -gopt ;;
2559             *)                    echo $flag ;;
2560         esac
2561     done
2562 }
2563
2564 suncc_flags(){
2565     for flag; do
2566         case $flag in
2567             -march=*|-mcpu=*)
2568                 case "${flag#*=}" in
2569                     native)                   echo -xtarget=native       ;;
2570                     v9|niagara)               echo -xarch=sparc          ;;
2571                     ultrasparc)               echo -xarch=sparcvis       ;;
2572                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2573                     i586|pentium)             echo -xchip=pentium        ;;
2574                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2575                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2576                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2577                     pentium4*)          echo -xtarget=pentium4           ;;
2578                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2579                     *-sse3)             echo -xarch=sse3                 ;;
2580                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2581                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2582                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2583                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2584                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2585                     k8|opteron|athlon64|athlon-fx)
2586                                                echo -xarch=sse2a         ;;
2587                     athlon*)                   echo -xarch=pentium_proa  ;;
2588                 esac
2589                 ;;
2590             -std=c99)             echo -xc99              ;;
2591             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2592             -fPIC)                echo -KPIC -xcode=pic32 ;;
2593             -W*,*)                echo $flag              ;;
2594             -f*-*|-W*|-mimpure-text)                      ;;
2595             -shared)              echo -G                 ;;
2596             *)                    echo $flag              ;;
2597         esac
2598     done
2599 }
2600
2601 tms470_flags(){
2602     for flag; do
2603         case $flag in
2604             -march=*|-mcpu=*)
2605                 case "${flag#*=}" in
2606                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2607                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2608                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2609                     armv6*|arm11*)          echo -mv=6   ;;
2610                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2611                                             echo -mv=5e  ;;
2612                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2613                 esac
2614                 ;;
2615             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2616             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2617             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2618             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2619             -msoft-float)   echo --float_support=vfplib       ;;
2620             -O[0-3]|-mf=*)  echo $flag                        ;;
2621             -g)             echo -g -mn                       ;;
2622             -pds=*)         echo $flag                        ;;
2623             -D*|-I*)        echo $flag                        ;;
2624             --gcc|--abi=*)  echo $flag                        ;;
2625             -me)            echo $flag                        ;;
2626         esac
2627     done
2628 }
2629
2630 probe_cc(){
2631     pfx=$1
2632     _cc=$2
2633
2634     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2635     unset _ld_o _ldflags _ld_lib _ld_path
2636     unset _depflags _DEPCMD _DEPFLAGS
2637     _flags_filter=echo
2638
2639     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2640         _type=llvm_gcc
2641         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2642         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2643         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2644         _cflags_speed='-O3'
2645         _cflags_size='-Os'
2646     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2647         _type=gcc
2648         gcc_version=$($_cc --version | head -n1)
2649         gcc_basever=$($_cc -dumpversion)
2650         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2651         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2652         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2653         if ! $_cc -dumpversion | grep -q '^2\.'; then
2654             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2655         fi
2656         _cflags_speed='-O3'
2657         _cflags_size='-Os'
2658     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2659         _type=icc
2660         _ident=$($_cc --version | head -n1)
2661         _depflags='-MMD'
2662         _cflags_speed='-O3'
2663         _cflags_size='-Os'
2664         _cflags_noopt='-O1'
2665     elif $_cc -v 2>&1 | grep -q xlc; then
2666         _type=xlc
2667         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2668         _cflags_speed='-O5'
2669         _cflags_size='-O5 -qcompact'
2670     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2671         _type=ccc
2672         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2673         _DEPFLAGS='-M'
2674         _cflags_speed='-fast'
2675         _cflags_size='-O1'
2676         _flags_filter=ccc_flags
2677     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2678         test -d "$sysroot" || die "No valid sysroot specified."
2679         _type=armcc
2680         _ident=$($_cc --vsn | head -n1)
2681         armcc_conf="$PWD/armcc.conf"
2682         $_cc --arm_linux_configure                 \
2683              --arm_linux_config_file="$armcc_conf" \
2684              --configure_sysroot="$sysroot"        \
2685              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2686              die "Error creating armcc configuration file."
2687         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2688         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2689         as_default="${cross_prefix}gcc"
2690         _depflags='-MMD'
2691         _cflags_speed='-O3'
2692         _cflags_size='-Os'
2693     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2694         _type=tms470
2695         _ident=$($_cc -version | head -n1 | tr -s ' ')
2696         _flags='--gcc --abi=eabi -me'
2697         _cc_e='-ppl -fe=$@'
2698         _cc_o='-fe=$@'
2699         _depflags='-ppa -ppd=$(@:.o=.d)'
2700         _cflags_speed='-O3 -mf=5'
2701         _cflags_size='-O3 -mf=2'
2702         _flags_filter=tms470_flags
2703     elif $_cc -v 2>&1 | grep -q clang; then
2704         _type=clang
2705         _ident=$($_cc --version | head -n1)
2706         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2707         _cflags_speed='-O3'
2708         _cflags_size='-Os'
2709     elif $_cc -V 2>&1 | grep -q Sun; then
2710         _type=suncc
2711         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2712         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2713         _DEPFLAGS='-xM1 -xc99'
2714         _ldflags='-std=c99'
2715         _cflags_speed='-O5'
2716         _cflags_size='-O5 -xspace'
2717         _flags_filter=suncc_flags
2718     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2719         _type=pathscale
2720         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2721         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2722         _cflags_speed='-O2'
2723         _cflags_size='-Os'
2724         _flags_filter='filter_out -Wdisabled-optimization'
2725     elif $_cc -v 2>&1 | grep -q Open64; then
2726         _type=open64
2727         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2728         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2729         _cflags_speed='-O2'
2730         _cflags_size='-Os'
2731         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2732     elif $_cc -V 2>&1 | grep -q Portland; then
2733         _type=pgi
2734         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2735         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2736         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2737         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2738         _cflags_noopt="-O1"
2739         _flags_filter=pgi_flags
2740     elif $_cc 2>&1 | grep -q Microsoft; then
2741         _type=msvc
2742         _ident=$($cc 2>&1 | head -n1)
2743         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2744         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2745         _cflags_speed="-O2"
2746         _cflags_size="-O1"
2747         if $_cc 2>&1 | grep -q Linker; then
2748             _ld_o='-out:$@'
2749         else
2750             _ld_o='-Fe$@'
2751         fi
2752         _cc_o='-Fo$@'
2753         _cc_e='-P -Fi$@'
2754         _flags_filter=msvc_flags
2755         _ld_lib='lib%.a'
2756         _ld_path='-libpath:'
2757         _flags='-nologo'
2758         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2759         if [ $pfx = hostcc ]; then
2760             append _cflags -Dsnprintf=_snprintf
2761         fi
2762     elif $_cc 2>&1 | grep -q Intel; then
2763         _type=icl
2764         _ident=$($cc 2>&1 | head -n1)
2765         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2766         # Not only is O3 broken on 13.x+ but it is slower on all previous
2767         # versions (tested) as well.
2768         _cflags_speed="-O2"
2769         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2770         if $_cc 2>&1 | grep -q Linker; then
2771             _ld_o='-out:$@'
2772         else
2773             _ld_o='-Fe$@'
2774         fi
2775         _cc_o='-Fo$@'
2776         _cc_e='-P'
2777         _flags_filter=icl_flags
2778         _ld_lib='lib%.a'
2779         _ld_path='-libpath:'
2780         # -Qdiag-error to make icl error when seeing certain unknown arguments
2781         _flags='-nologo -Qdiag-error:4044,10157'
2782         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2783         # with MSVC which enables it by default.
2784         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2785         if [ $pfx = hostcc ]; then
2786             append _cflags -Dsnprintf=_snprintf
2787         fi
2788     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
2789         _type=cparser
2790         _ident=$($_cc --version | head -n1)
2791         _depflags='-MMD'
2792         _cflags_speed='-O4'
2793         _cflags_size='-O2'
2794         _flags_filter=cparser_flags
2795     fi
2796
2797     eval ${pfx}_type=\$_type
2798     eval ${pfx}_ident=\$_ident
2799 }
2800
2801 set_ccvars(){
2802     eval ${1}_C=\${_cc_c-\${${1}_C}}
2803     eval ${1}_E=\${_cc_e-\${${1}_E}}
2804     eval ${1}_O=\${_cc_o-\${${1}_O}}
2805
2806     if [ -n "$_depflags" ]; then
2807         eval ${1}_DEPFLAGS=\$_depflags
2808     else
2809         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2810         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2811         eval DEP${1}FLAGS=\$_flags
2812     fi
2813 }
2814
2815 probe_cc cc "$cc"
2816 cflags_filter=$_flags_filter
2817 cflags_speed=$_cflags_speed
2818 cflags_size=$_cflags_size
2819 cflags_noopt=$_cflags_noopt
2820 add_cflags $_flags $_cflags
2821 cc_ldflags=$_ldflags
2822 set_ccvars CC
2823
2824 probe_cc hostcc "$host_cc"
2825 host_cflags_filter=$_flags_filter
2826 add_host_cflags  $_flags $_cflags
2827 set_ccvars HOSTCC
2828
2829 test -n "$cc_type" && enable $cc_type ||
2830     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2831
2832 : ${as_default:=$cc}
2833 : ${dep_cc_default:=$cc}
2834 : ${ld_default:=$cc}
2835 : ${host_ld_default:=$host_cc}
2836 set_default ar as dep_cc ld host_ld
2837
2838 probe_cc as "$as"
2839 asflags_filter=$_flags_filter
2840 add_asflags $_flags $_cflags
2841 set_ccvars AS
2842
2843 probe_cc ld "$ld"
2844 ldflags_filter=$_flags_filter
2845 add_ldflags $_flags $_ldflags
2846 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2847 LD_O=${_ld_o-$LD_O}
2848 LD_LIB=${_ld_lib-$LD_LIB}
2849 LD_PATH=${_ld_path-$LD_PATH}
2850
2851 probe_cc hostld "$host_ld"
2852 host_ldflags_filter=$_flags_filter
2853 add_host_ldflags $_flags $_ldflags
2854 HOSTLD_O=${_ld_o-$HOSTLD_O}
2855
2856 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2857     probe_cc depcc "$dep_cc"
2858     CCDEP=${_DEPCMD:-$DEPCMD}
2859     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2860     DEPCCFLAGS=$_flags
2861 fi
2862
2863 if $ar 2>&1 | grep -q Microsoft; then
2864     arflags="-nologo"
2865     ar_o='-out:$@'
2866 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2867     arflags="rq"
2868     ar_o='$@'
2869 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
2870     arflags='-Xany -r -c'
2871     ar_o='$@'
2872 else
2873     arflags="rc"
2874     ar_o='$@'
2875 fi
2876
2877 add_cflags $extra_cflags
2878 add_asflags $extra_cflags
2879
2880 if test -n "$sysroot"; then
2881     case "$cc_type" in
2882         gcc|llvm_gcc|clang)
2883             add_cppflags --sysroot="$sysroot"
2884             add_ldflags --sysroot="$sysroot"
2885         ;;
2886         tms470)
2887             add_cppflags -I"$sysinclude"
2888             add_ldflags  --sysroot="$sysroot"
2889         ;;
2890     esac
2891 fi
2892
2893 if test "$cpu" = host; then
2894     enabled cross_compile &&
2895         die "--cpu=host makes no sense when cross-compiling."
2896
2897     case "$cc_type" in
2898         gcc|llvm_gcc)
2899             check_native(){
2900                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2901                 sed -n "/cc1.*$1=/{
2902                             s/.*$1=\\([^ ]*\\).*/\\1/
2903                             p
2904                             q
2905                         }" $TMPE
2906             }
2907             cpu=$(check_native -march || check_native -mcpu)
2908         ;;
2909     esac
2910
2911     test "${cpu:-host}" = host &&
2912         die "--cpu=host not supported with compiler $cc"
2913 fi
2914
2915 # Deal with common $arch aliases
2916 case "$arch" in
2917     aarch64|arm64)
2918         arch="aarch64"
2919     ;;
2920     arm*)
2921         arch="arm"
2922     ;;
2923     mips*|IP*)
2924         arch="mips"
2925     ;;
2926     parisc*|hppa*)
2927         arch="parisc"
2928     ;;
2929     "Power Macintosh"|ppc*|powerpc*)
2930         arch="ppc"
2931     ;;
2932     s390|s390x)
2933         arch="s390"
2934     ;;
2935     sh4|sh)
2936         arch="sh4"
2937     ;;
2938     sun4u|sparc*)
2939         arch="sparc"
2940     ;;
2941     tilegx|tile-gx)
2942         arch="tilegx"
2943     ;;
2944     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
2945         arch="x86"
2946     ;;
2947 esac
2948
2949 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2950 enable $arch
2951
2952 # Add processor-specific flags
2953 if enabled aarch64; then
2954
2955     case $cpu in
2956         armv*)
2957             cpuflags="-march=$cpu"
2958         ;;
2959         *)
2960             cpuflags="-mcpu=$cpu"
2961         ;;
2962     esac
2963
2964 elif enabled alpha; then
2965
2966     cpuflags="-mcpu=$cpu"
2967
2968 elif enabled arm; then
2969
2970     check_arm_arch() {
2971         check_cpp_condition stddef.h \
2972             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
2973             $cpuflags
2974     }
2975
2976     probe_arm_arch() {
2977         if   check_arm_arch 4;        then echo armv4;
2978         elif check_arm_arch 4T;       then echo armv4t;
2979         elif check_arm_arch 5;        then echo armv5;
2980         elif check_arm_arch 5E;       then echo armv5e;
2981         elif check_arm_arch 5T;       then echo armv5t;
2982         elif check_arm_arch 5TE;      then echo armv5te;
2983         elif check_arm_arch 5TEJ;     then echo armv5te;
2984         elif check_arm_arch 6;        then echo armv6;
2985         elif check_arm_arch 6J;       then echo armv6j;
2986         elif check_arm_arch 6K;       then echo armv6k;
2987         elif check_arm_arch 6Z;       then echo armv6z;
2988         elif check_arm_arch 6ZK;      then echo armv6zk;
2989         elif check_arm_arch 6T2;      then echo armv6t2;
2990         elif check_arm_arch 7;        then echo armv7;
2991         elif check_arm_arch 7A  7_A;  then echo armv7-a;
2992         elif check_arm_arch 7R  7_R;  then echo armv7-r;
2993         elif check_arm_arch 7M  7_M;  then echo armv7-m;
2994         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
2995         elif check_arm_arch 8A  8_A;  then echo armv8-a;
2996         fi
2997     }
2998
2999     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3000
3001     case $cpu in
3002         armv*)
3003             cpuflags="-march=$cpu"
3004             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3005         ;;
3006         *)
3007             cpuflags="-mcpu=$cpu"
3008             case $cpu in
3009                 cortex-a*)                               subarch=armv7a  ;;
3010                 cortex-r*)                               subarch=armv7r  ;;
3011                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3012                 arm11*)                                  subarch=armv6   ;;
3013                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3014                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3015                 *)                             subarch=$(probe_arm_arch) ;;
3016             esac
3017         ;;
3018     esac
3019
3020     case "$subarch" in
3021         armv5t*)    enable fast_clz                ;;
3022         armv[6-8]*) enable fast_clz fast_unaligned ;;
3023     esac
3024
3025 elif enabled avr32; then
3026
3027     case $cpu in
3028         ap7[02]0[0-2])
3029             subarch="avr32_ap"
3030             cpuflags="-mpart=$cpu"
3031         ;;
3032         ap)
3033             subarch="avr32_ap"
3034             cpuflags="-march=$cpu"
3035         ;;
3036         uc3[ab]*)
3037             subarch="avr32_uc"
3038             cpuflags="-mcpu=$cpu"
3039         ;;
3040         uc)
3041             subarch="avr32_uc"
3042             cpuflags="-march=$cpu"
3043         ;;
3044     esac
3045
3046 elif enabled bfin; then
3047
3048     cpuflags="-mcpu=$cpu"
3049
3050 elif enabled mips; then
3051
3052     cpuflags="-march=$cpu"
3053
3054 elif enabled ppc; then
3055
3056     case $(tolower $cpu) in
3057         601|ppc601|powerpc601)
3058             cpuflags="-mcpu=601"
3059             disable altivec
3060         ;;
3061         603*|ppc603*|powerpc603*)
3062             cpuflags="-mcpu=603"
3063             disable altivec
3064         ;;
3065         604*|ppc604*|powerpc604*)
3066             cpuflags="-mcpu=604"
3067             disable altivec
3068         ;;
3069         g3|75*|ppc75*|powerpc75*)
3070             cpuflags="-mcpu=750"
3071             disable altivec
3072         ;;
3073         g4|745*|ppc745*|powerpc745*)
3074             cpuflags="-mcpu=7450"
3075         ;;
3076         74*|ppc74*|powerpc74*)
3077             cpuflags="-mcpu=7400"
3078         ;;
3079         g5|970|ppc970|powerpc970)
3080             cpuflags="-mcpu=970"
3081         ;;
3082         power[3-7]*)
3083             cpuflags="-mcpu=$cpu"
3084         ;;
3085         cell)
3086             cpuflags="-mcpu=cell"
3087             enable ldbrx
3088         ;;
3089         e500mc)
3090             cpuflags="-mcpu=e500mc"
3091             disable altivec
3092         ;;
3093         e500v2)
3094             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3095             disable altivec
3096         ;;
3097         e500)
3098             cpuflags="-mcpu=8540 -mhard-float"
3099             disable altivec
3100         ;;
3101     esac
3102
3103 elif enabled sparc; then
3104
3105     case $cpu in
3106         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3107             cpuflags="-mcpu=$cpu"
3108             disable vis
3109         ;;
3110         ultrasparc*|niagara[234])
3111             cpuflags="-mcpu=$cpu"
3112         ;;
3113     esac
3114
3115 elif enabled x86; then
3116
3117     case $cpu in
3118         i[345]86|pentium)
3119             cpuflags="-march=$cpu"
3120             disable mmx
3121         ;;
3122         # targets that do NOT support nopl and conditional mov (cmov)
3123         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3124             cpuflags="-march=$cpu"
3125             disable i686
3126         ;;
3127         # targets that do support nopl and conditional mov (cmov)
3128         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3129             cpuflags="-march=$cpu"
3130             enable i686
3131             enable fast_cmov
3132         ;;
3133         # targets that do support conditional mov but on which it's slow
3134         pentium4|pentium4m|prescott|nocona)
3135             cpuflags="-march=$cpu"
3136             enable i686
3137             disable fast_cmov
3138         ;;
3139     esac
3140
3141 fi
3142
3143 if [ "$cpu" != generic ]; then
3144     add_cflags  $cpuflags
3145     add_asflags $cpuflags
3146 fi
3147
3148 # compiler sanity check
3149 check_exec <<EOF
3150 int main(void){ return 0; }
3151 EOF
3152 if test "$?" != 0; then
3153     echo "$cc is unable to create an executable file."
3154     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3155         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3156         echo "Only do this if you know what cross compiling means."
3157     fi
3158     die "C compiler test failed."
3159 fi
3160
3161 add_cppflags -D_ISOC99_SOURCE
3162 check_cflags -std=c99
3163 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3164 #include <stdlib.h>
3165 EOF
3166 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3167 #include <stdlib.h>
3168 EOF
3169
3170 add_host_cppflags -D_ISOC99_SOURCE
3171 check_host_cflags -std=c99
3172 check_host_cflags -Wall
3173 check_host_cflags -O3
3174
3175 check_64bit(){
3176     arch32=$1
3177     arch64=$2
3178     expr=$3
3179     check_code cc "" "int test[2*($expr) - 1]" &&
3180         subarch=$arch64 || subarch=$arch32
3181 }
3182
3183 case "$arch" in
3184     aarch64|alpha|ia64)
3185         spic=$shared
3186     ;;
3187     mips)
3188         check_64bit mips mips64 '_MIPS_SIM > 1'
3189         spic=$shared
3190     ;;
3191     parisc)
3192         check_64bit parisc parisc64 'sizeof(void *) > 4'
3193         spic=$shared
3194     ;;
3195     ppc)
3196         check_64bit ppc ppc64 'sizeof(void *) > 4'
3197         spic=$shared
3198     ;;
3199     sparc)
3200         check_64bit sparc sparc64 'sizeof(void *) > 4'
3201         spic=$shared
3202     ;;
3203     x86)
3204         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3205         if test "$subarch" = "x86_64"; then
3206             spic=$shared
3207         fi
3208     ;;
3209 esac
3210
3211 enable $subarch
3212 enabled spic && enable_weak pic
3213
3214 # OS specific
3215 case $target_os in
3216     aix)
3217         SHFLAGS=-shared
3218         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3219         enabled shared && add_ldflags -Wl,-brtl
3220         ;;
3221     haiku)
3222         prefix_default="/boot/common"
3223         network_extralibs="-lnetwork"
3224         host_libs=
3225         ;;
3226     sunos)
3227         SHFLAGS='-shared -Wl,-h,$$(@F)'
3228         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3229         network_extralibs="-lsocket -lnsl"
3230         # When using suncc to build, the Solaris linker will mark
3231         # an executable with each instruction set encountered by
3232         # the Solaris assembler.  As our libraries contain their own
3233         # guards for processor-specific code, instead suppress
3234         # generation of the HWCAPS ELF section on Solaris x86 only.
3235         enabled_all suncc x86 &&
3236             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3237             add_ldflags -Wl,-M,mapfile
3238         nm_default='nm -P -g'
3239         ;;
3240     netbsd)
3241         disable symver
3242         oss_indev_extralibs="-lossaudio"
3243         oss_outdev_extralibs="-lossaudio"
3244         ;;
3245     openbsd|bitrig)
3246         disable symver
3247         SHFLAGS='-shared'
3248         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3249         SLIB_INSTALL_LINKS=
3250         oss_indev_extralibs="-lossaudio"
3251         oss_outdev_extralibs="-lossaudio"
3252         ;;
3253     dragonfly)
3254         disable symver
3255         ;;
3256     freebsd)
3257         ;;
3258     bsd/os)
3259         add_extralibs -lpoll -lgnugetopt
3260         ;;
3261     darwin)
3262         gas="gas-preprocessor.pl $cc"
3263         enabled ppc && add_asflags -force_cpusubtype_ALL
3264         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3265         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3266         add_ldflags -Wl,-dynamic,-search_paths_first
3267         SLIBSUF=".dylib"
3268         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3269         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3270         objformat="macho"
3271         enabled x86_64 && objformat="macho64"
3272         enabled_any pic shared ||
3273             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3274         ;;
3275     mingw32*)
3276         if test $target_os = "mingw32ce"; then
3277             disable network
3278         else
3279             target_os=mingw32
3280         fi
3281         LIBTARGET=i386
3282         if enabled x86_64; then
3283             LIBTARGET="i386:x86-64"
3284         elif enabled arm; then
3285             LIBTARGET=arm-wince
3286         fi
3287         check_ldflags -Wl,--nxcompat
3288         check_ldflags -Wl,--dynamicbase
3289         shlibdir_default="$bindir_default"
3290         SLIBPREF=""
3291         SLIBSUF=".dll"
3292         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3293         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3294         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3295         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3296         SLIB_INSTALL_LINKS=
3297         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3298         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3299         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3300         objformat="win32"
3301         dlltool="${cross_prefix}dlltool"
3302         ranlib=:
3303         enable dos_paths
3304         ;;
3305     win32|win64)
3306         disable symver
3307         if enabled shared; then
3308             # Link to the import library instead of the normal static library
3309             # for shared libs.
3310             LD_LIB='%.lib'
3311             # Cannot build both shared and static libs with MSVC or icl.
3312             disable static
3313         fi
3314         shlibdir_default="$bindir_default"
3315         SLIBPREF=""
3316         SLIBSUF=".dll"
3317         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3318         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3319         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3320         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3321         SLIB_INSTALL_LINKS=
3322         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3323         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3324         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3325         objformat="win32"
3326         ranlib=:
3327         enable dos_paths
3328         ;;
3329     cygwin*)
3330         target_os=cygwin
3331         shlibdir_default="$bindir_default"
3332         SLIBPREF="cyg"
3333         SLIBSUF=".dll"
3334         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3335         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3336         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3337         SLIB_INSTALL_LINKS=
3338         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3339         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3340         objformat="win32"
3341         enable dos_paths
3342         ;;
3343     *-dos|freedos|opendos)
3344         network_extralibs="-lsocket"
3345         objformat="coff"
3346         enable dos_paths
3347         add_cppflags -U__STRICT_ANSI__
3348         ;;
3349     linux)
3350         enable dv1394
3351         ;;
3352     irix*)
3353         target_os=irix
3354         ranlib="echo ignoring ranlib"
3355         ;;
3356     os/2*)
3357         ln_s="cp -f"
3358         objformat="aout"
3359         add_cppflags -D_GNU_SOURCE
3360         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3361         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3362         LIBSUF="_s.a"
3363         SLIBPREF=""
3364         SLIBSUF=".dll"
3365         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3366         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3367         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3368             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3369             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3370             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3371             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3372             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3373         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3374             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3375         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3376         enable dos_paths
3377         ;;
3378     gnu/kfreebsd)
3379         add_cppflags -D_BSD_SOURCE
3380         ;;
3381     gnu)
3382         ;;
3383     qnx)
3384         add_cppflags -D_QNX_SOURCE
3385         network_extralibs="-lsocket"
3386         ;;
3387     symbian)
3388         SLIBSUF=".dll"
3389         enable dos_paths
3390         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3391         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3392         add_ldflags -Wl,--target1-abs,--no-undefined \
3393                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3394                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3395         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3396                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3397                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3398         ;;
3399     osf1)
3400         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3401         ;;
3402     minix)
3403         ;;
3404     plan9)
3405         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3406                      -D_REENTRANT_SOURCE        \
3407                      -D_RESEARCH_SOURCE         \
3408                      -DFD_SETSIZE=96            \
3409                      -DHAVE_SOCK_OPTS
3410         add_compat strtod.o strtod=avpriv_strtod
3411         network_extralibs='-lbsd'
3412         exeobjs=compat/plan9/main.o
3413         disable avserver
3414         cp_f='cp'
3415         ;;
3416     none)
3417         ;;
3418     *)
3419         die "Unknown OS '$target_os'."
3420         ;;
3421 esac
3422
3423 # determine libc flavour
3424
3425 probe_libc(){
3426     pfx=$1
3427     pfx_no_=${pfx%_}
3428     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3429     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3430         eval ${pfx}libc_type=uclibc
3431         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3432     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3433         eval ${pfx}libc_type=glibc
3434         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3435     # MinGW headers can be installed on Cygwin, so check for newlib first.
3436     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3437         eval ${pfx}libc_type=newlib
3438         add_${pfx}cppflags -U__STRICT_ANSI__
3439     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3440     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3441         eval ${pfx}libc_type=mingw64
3442         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3443         eval test \$${pfx_no_}cc_type = "gcc" &&
3444             add_${pfx}cppflags -D__printf__=__gnu_printf__
3445     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3446          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3447         eval ${pfx}libc_type=mingw32
3448         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3449             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3450             die "ERROR: MinGW32 runtime version must be >= 3.15."
3451         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3452         eval test \$${pfx_no_}cc_type = "gcc" &&
3453             add_${pfx}cppflags -D__printf__=__gnu_printf__
3454     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3455         eval ${pfx}libc_type=msvcrt
3456         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3457         # 0x601 by default unless something else is set by the user.
3458         # This can easily lead to us detecting functions only present
3459         # in such new versions and producing binaries requiring windows 7.0.
3460         # Therefore explicitly set the default to XP unless the user has
3461         # set something else on the command line.
3462         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3463             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3464     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3465         eval ${pfx}libc_type=klibc
3466     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3467         eval ${pfx}libc_type=bionic
3468     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3469         eval ${pfx}libc_type=solaris
3470         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3471     fi
3472 }
3473
3474 probe_libc
3475 test -n "$libc_type" && enable libc_$libc_type
3476 probe_libc host_
3477 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3478
3479 case $libc_type in
3480     bionic)
3481         add_compat strtod.o strtod=avpriv_strtod
3482         ;;
3483     msvcrt)
3484         add_compat strtod.o strtod=avpriv_strtod
3485         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3486                                      _snprintf=avpriv_snprintf  \
3487                                      vsnprintf=avpriv_vsnprintf
3488         ;;
3489 esac
3490
3491 # hacks for compiler/libc/os combinations
3492
3493 if enabled_all tms470 libc_glibc; then
3494     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3495     add_cppflags -D__USER_LABEL_PREFIX__=
3496     add_cppflags -D__builtin_memset=memset
3497     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3498     add_cflags   -pds=48    # incompatible redefinition of macro
3499 fi
3500
3501 if enabled_all ccc libc_glibc; then
3502     add_ldflags -Wl,-z,now  # calls to libots crash without this
3503 fi
3504
3505 esc(){
3506     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3507 }
3508
3509 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3510
3511 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3512
3513 set_default $PATHS_LIST
3514 set_default nm
3515
3516 # we need to build at least one lib type
3517 if ! enabled_any static shared; then
3518     cat <<EOF
3519 At least one library type must be built.
3520 Specify --enable-static to build the static libraries or --enable-shared to
3521 build the shared libraries as well. To only build the shared libraries specify
3522 --disable-static in addition to --enable-shared.
3523 EOF
3524     exit 1;
3525 fi
3526
3527 die_license_disabled() {
3528     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3529 }
3530
3531 die_license_disabled gpl libcdio
3532 die_license_disabled gpl libx264
3533 die_license_disabled gpl libxavs
3534 die_license_disabled gpl libxvid
3535 die_license_disabled gpl x11grab
3536
3537 die_license_disabled nonfree libfaac
3538 die_license_disabled nonfree libfdk_aac
3539 die_license_disabled nonfree openssl
3540
3541 die_license_disabled version3 libopencore_amrnb
3542 die_license_disabled version3 libopencore_amrwb
3543 die_license_disabled version3 libvo_aacenc
3544 die_license_disabled version3 libvo_amrwbenc
3545
3546 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3547
3548 disabled optimizations || check_cflags -fomit-frame-pointer
3549
3550 enable_weak_pic() {
3551     disabled pic && return
3552     enable pic
3553     add_cppflags -DPIC
3554     case "$target_os" in
3555     mingw*|cygwin*)
3556         ;;
3557     *)
3558         add_cflags -fPIC
3559         ;;
3560     esac
3561     add_asflags  -fPIC
3562 }
3563
3564 enabled pic && enable_weak_pic
3565
3566 check_cc <<EOF || die "Symbol mangling check failed."
3567 int ff_extern;
3568 EOF
3569 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3570 extern_prefix=${sym%%ff_extern*}
3571
3572 check_cc <<EOF && enable_weak inline_asm
3573 void foo(void) { __asm__ volatile ("" ::); }
3574 EOF
3575
3576 _restrict=
3577 for restrict_keyword in restrict __restrict__ __restrict; do
3578     check_cc <<EOF && _restrict=$restrict_keyword && break
3579 void foo(char * $restrict_keyword p);
3580 EOF
3581 done
3582
3583 check_cc <<EOF && enable pragma_deprecated
3584 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3585 EOF
3586
3587 check_cc <<EOF && enable attribute_packed
3588 struct { int x; } __attribute__((packed)) x;
3589 EOF
3590
3591 check_cc <<EOF && enable attribute_may_alias
3592 union { int x; } __attribute__((may_alias)) x;
3593 EOF
3594
3595 check_cc <<EOF || die "endian test failed"
3596 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3597 EOF
3598 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3599
3600 check_inline_asm inline_asm_labels '"1:\n"'
3601
3602 if enabled aarch64; then
3603     # internal assembler in clang 3.3 does not support this instruction
3604     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
3605     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
3606
3607     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
3608
3609 elif enabled alpha; then
3610
3611     check_cflags -mieee
3612
3613 elif enabled arm; then
3614
3615     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3616     enabled thumb && check_cflags -mthumb || check_cflags -marm
3617     nogas=die
3618
3619     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3620         enable vfp_args
3621     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3622         case "${cross_prefix:-$cc}" in
3623             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3624             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3625 __asm__ (".eabi_attribute 28, 1");
3626 int main(void) { return 0; }
3627 EOF
3628         esac
3629         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3630     fi
3631
3632     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3633     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3634     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3635     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3636     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3637     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3638
3639     [ $target_os = linux ] ||
3640         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3641             $ARCH_EXT_LIST_ARM
3642
3643     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3644     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3645
3646     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3647
3648 elif enabled mips; then
3649
3650     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3651
3652 elif enabled parisc; then
3653
3654     if enabled gcc; then
3655         case $($cc -dumpversion) in
3656             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3657         esac
3658     fi
3659
3660 elif enabled ppc; then
3661
3662     enable local_aligned_8 local_aligned_16
3663
3664     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3665     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3666     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3667     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3668
3669     # AltiVec flags: The FSF version of GCC differs from the Apple version
3670     if enabled altivec; then
3671         nogas=warn
3672         check_cflags -maltivec -mabi=altivec &&
3673         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3674         check_cflags -faltivec
3675
3676         # check if our compiler supports Motorola AltiVec C API
3677         check_cc <<EOF || disable altivec
3678 $inc_altivec_h
3679 int main(void) {
3680     vector signed int v1 = (vector signed int) { 0 };
3681     vector signed int v2 = (vector signed int) { 1 };
3682     v1 = vec_add(v1, v2);
3683     return 0;
3684 }
3685 EOF
3686
3687         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3688     fi
3689
3690 elif enabled sparc; then
3691
3692     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3693
3694 elif enabled x86; then
3695
3696     check_builtin rdtsc    intrin.h   "__rdtsc()"
3697     check_builtin mm_empty mmintrin.h "_mm_empty()"
3698
3699     enable local_aligned_8 local_aligned_16
3700
3701     # check whether EBP is available on x86
3702     # As 'i' is stored on the stack, this program will crash
3703     # if the base pointer is used to access it because the
3704     # base pointer is cleared in the inline assembly code.
3705     check_exec_crash <<EOF && enable ebp_available
3706 volatile int i=0;
3707 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3708 return i;
3709 EOF
3710
3711     # check whether EBX is available on x86
3712     check_inline_asm ebx_available '""::"b"(0)' &&
3713         check_inline_asm ebx_available '"":::"%ebx"'
3714
3715     # check whether xmm clobbers are supported
3716     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3717
3718     # check whether binutils is new enough to compile SSSE3/MMXEXT
3719     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3720     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3721
3722     if ! disabled_any asm mmx yasm; then
3723         if check_cmd $yasmexe --version; then
3724             enabled x86_64 && yasm_extra="-m amd64"
3725             yasm_debug="-g dwarf2"
3726         elif check_cmd nasm -v; then
3727             yasmexe=nasm
3728             yasm_debug="-g -F dwarf"
3729             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3730         fi
3731
3732         YASMFLAGS="-f $objformat $yasm_extra"
3733         enabled pic               && append YASMFLAGS "-DPIC"
3734         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3735         case "$objformat" in
3736             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3737         esac
3738
3739         check_yasm "movbe ecx, [5]" && enable yasm ||
3740             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
3741         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3742         check_yasm "CPU amdnop" && enable cpunop
3743     fi
3744
3745     case "$cpu" in
3746         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3747             disable fast_clz
3748         ;;
3749     esac
3750
3751 fi
3752
3753 if enabled asm; then
3754     as=${gas:=$as}
3755     check_as <<EOF && enable gnu_as || \
3756         $nogas "GNU assembler not found, install gas-preprocessor"
3757 .macro m n
3758 \n: .int 0
3759 .endm
3760 m x
3761 EOF
3762 fi
3763
3764 check_ldflags -Wl,--as-needed
3765
3766 if check_func dlopen; then
3767     ldl=
3768 elif check_func dlopen -ldl; then
3769     ldl=-ldl
3770 fi
3771
3772 if ! disabled network; then
3773     check_type "sys/types.h sys/socket.h" socklen_t
3774     check_type netdb.h "struct addrinfo"
3775     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3776     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3777     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3778     check_type netinet/in.h "struct sockaddr_in6"
3779     check_type poll.h "struct pollfd"
3780     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3781     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3782     check_type netinet/sctp.h "struct sctp_event_subscribe"
3783     check_func getaddrinfo $network_extralibs
3784     check_func getservbyport $network_extralibs
3785     # Prefer arpa/inet.h over winsock2
3786     if check_header arpa/inet.h ; then
3787         check_func closesocket
3788     elif check_header winsock2.h ; then
3789         check_func_headers winsock2.h closesocket -lws2 &&
3790             network_extralibs="-lws2" ||
3791         { check_func_headers winsock2.h closesocket -lws2_32 &&
3792             network_extralibs="-lws2_32"; } || disable winsock2_h network
3793         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3794         check_type ws2tcpip.h socklen_t
3795         check_type ws2tcpip.h "struct addrinfo"
3796         check_type ws2tcpip.h "struct group_source_req"
3797         check_type ws2tcpip.h "struct ip_mreq_source"
3798         check_type ws2tcpip.h "struct ipv6_mreq"
3799         check_type winsock2.h "struct pollfd"
3800         check_type ws2tcpip.h "struct sockaddr_in6"
3801         check_type ws2tcpip.h "struct sockaddr_storage"
3802         check_struct winsock2.h "struct sockaddr" sa_len
3803     else
3804         disable network
3805     fi
3806 fi
3807
3808 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3809 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3810
3811 check_func  fcntl
3812 check_func  fork
3813 check_func_headers stdlib.h getenv
3814 check_func  gethrtime
3815 check_func  getopt
3816 check_func  getrusage
3817 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
3818 check_func  gettimeofday
3819 check_func  inet_aton $network_extralibs
3820 check_func  isatty
3821 check_func  localtime_r
3822 check_func  ${malloc_prefix}memalign            && enable memalign
3823 check_func  mkstemp
3824 check_func  mmap
3825 check_func  mprotect
3826 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3827 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3828 check_func  setrlimit
3829 check_func  strerror_r
3830 check_func  strptime
3831 check_func  strtok_r
3832 check_func  sched_getaffinity
3833 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
3834 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
3835 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
3836 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
3837 check_func  sysconf
3838 check_func  sysctl
3839 check_func  usleep
3840 check_func_headers io.h setmode
3841 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
3842 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
3843 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
3844 check_func_headers windows.h GetProcessAffinityMask
3845 check_func_headers windows.h GetProcessTimes
3846 check_func_headers windows.h GetSystemTimeAsFileTime
3847 check_func_headers windows.h MapViewOfFile
3848 check_func_headers windows.h SetConsoleTextAttribute
3849 check_func_headers windows.h Sleep
3850 check_func_headers windows.h VirtualAlloc
3851
3852 check_header direct.h
3853 check_header dlfcn.h
3854 check_header dxva.h
3855 check_header dxva2api.h
3856 check_header io.h
3857 check_header malloc.h
3858 check_header poll.h
3859 check_header sys/mman.h
3860 check_header sys/param.h
3861 check_header sys/resource.h
3862 check_header sys/select.h
3863 check_header sys/time.h
3864 check_header sys/un.h
3865 check_header unistd.h
3866 check_header vdpau/vdpau.h
3867 check_header vdpau/vdpau_x11.h
3868 check_header VideoDecodeAcceleration/VDADecoder.h
3869 check_header windows.h
3870 check_header X11/extensions/XvMClib.h
3871
3872 if ! disabled w32threads && ! enabled pthreads; then
3873     check_func_headers "windows.h process.h" _beginthreadex &&
3874         enable w32threads || disable w32threads
3875 fi
3876
3877 # check for some common methods of building with pthread support
3878 # do this before the optional library checks as some of them require pthreads
3879 if ! disabled pthreads && ! enabled w32threads; then
3880     enable pthreads
3881     if check_func pthread_join -pthread; then
3882         add_cflags -pthread
3883         add_extralibs -pthread
3884     elif check_func pthread_join -pthreads; then
3885         add_cflags -pthreads
3886         add_extralibs -pthreads
3887     elif check_func pthread_join -lpthreadGC2; then
3888         add_extralibs -lpthreadGC2
3889     elif check_lib pthread.h pthread_join -lpthread; then
3890         :
3891     elif ! check_func pthread_join; then
3892         disable pthreads
3893     fi
3894 fi
3895
3896 for thread in $THREADS_LIST; do
3897     if enabled $thread; then
3898         test -n "$thread_type" &&
3899             die "ERROR: Only one thread type must be selected." ||
3900             thread_type="$thread"
3901     fi
3902 done
3903
3904 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
3905 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
3906
3907 check_lib math.h sin -lm && LIBM="-lm"
3908 enabled vaapi && require vaapi va/va.h vaInitialize -lva
3909
3910 atan2f_args=2
3911 ldexpf_args=2
3912 powf_args=2
3913
3914 for func in $MATH_FUNCS; do
3915     eval check_mathfunc $func \${${func}_args:-1}
3916 done
3917
3918 # these are off by default, so fail if requested and not available
3919 enabled avisynth          && { { check_header "avisynth/avisynth_c.h" && check_lib2 "windows.h" LoadLibrary; } ||
3920                                { check_header "avxsynth/avxsynth_c.h" && check_lib2 "dlfcn.h" dlopen -ldl; } ||
3921                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
3922 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
3923 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
3924 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
3925 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
3926 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
3927 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
3928                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
3929                                done || die "ERROR: libgsm not found"; }
3930 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
3931 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
3932 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
3933 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
3934 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
3935 enabled libopenjpeg       && require libopenjpeg openjpeg.h opj_version -lopenjpeg
3936 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
3937 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
3938 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
3939 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
3940 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
3941 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
3942 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
3943 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
3944 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
3945 enabled libvpx            && {
3946     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
3947                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
3948     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
3949                                     die "ERROR: libvpx encoder version must be >=0.9.6"; }
3950     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
3951     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
3952 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
3953 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
3954 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
3955                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
3956                                die "ERROR: libx264 version must be >= 0.118."; }
3957 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
3958 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
3959 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
3960                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
3961                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
3962                                die "ERROR: openssl not found"; }
3963
3964 if enabled gnutls; then
3965     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
3966     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
3967 fi
3968
3969 # libdc1394 check
3970 if enabled libdc1394; then
3971     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
3972         enable libdc1394_2; } ||
3973     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
3974         enable libdc1394_1; } ||
3975     die "ERROR: No version of libdc1394 found "
3976 fi
3977
3978 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
3979     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
3980     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
3981     enable sdl
3982 fi
3983
3984 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
3985 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
3986
3987 check_header linux/fb.h
3988 check_header linux/videodev2.h
3989 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
3990
3991 check_header sys/videoio.h
3992
3993 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
3994 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
3995 # w32api 3.12 had it defined wrong
3996 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
3997
3998 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
3999 { check_header dev/bktr/ioctl_meteor.h &&
4000   check_header dev/bktr/ioctl_bt848.h; } ||
4001 { check_header machine/ioctl_meteor.h &&
4002   check_header machine/ioctl_bt848.h; } ||
4003 { check_header dev/video/meteor/ioctl_meteor.h &&
4004   check_header dev/video/bktr/ioctl_bt848.h; } ||
4005 check_header dev/ic/bt8xx.h
4006
4007 check_header sndio.h
4008 check_header sys/soundcard.h
4009 check_header soundcard.h
4010
4011 enabled_any alsa_indev alsa_outdev &&
4012     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4013
4014 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
4015     check_func jack_port_get_latency_range -ljack
4016
4017 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4018
4019 if enabled libcdio; then
4020     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||