f88900501cedc67093d0a6185a1cff3e2097d5d5
[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-libx265         enable HEVC encoding via x265 [no]
208   --enable-libxavs         enable AVS encoding via xavs [no]
209   --enable-libxvid         enable Xvid encoding via xvidcore,
210                            native MPEG-4/Xvid encoder exists [no]
211   --enable-openssl         enable openssl [no]
212   --enable-x11grab         enable X11 grabbing [no]
213   --enable-zlib            enable zlib [autodetect]
214
215 Advanced options (experts only):
216   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
217   --enable-cross-compile   assume a cross-compiler is used
218   --sysroot=PATH           root of cross-build tree
219   --sysinclude=PATH        location of cross-build system headers
220   --target-os=OS           compiler targets OS [$target_os]
221   --target-exec=CMD        command to run executables on target
222   --target-path=DIR        path to view of build directory on target
223   --target-samples=DIR     path to samples directory on target
224   --toolchain=NAME         set tool defaults according to NAME
225   --nm=NM                  use nm tool
226   --ar=AR                  use archive tool AR [$ar_default]
227   --as=AS                  use assembler AS [$as_default]
228   --cc=CC                  use C compiler CC [$cc_default]
229   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
230   --ld=LD                  use linker LD
231   --host-cc=HOSTCC         use host C compiler HOSTCC
232   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
233   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
234   --host-ld=HOSTLD         use host linker HOSTLD
235   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
236   --host-libs=HLIBS        use libs HLIBS when linking for host
237   --host-os=OS             compiler host OS [$target_os]
238   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
239   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
240   --extra-libs=ELIBS       add ELIBS [$ELIBS]
241   --extra-version=STRING   version string suffix []
242   --optflags=OPTFLAGS      override optimization-related compiler flags
243   --build-suffix=SUFFIX    library name suffix []
244   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
245   --arch=ARCH              select architecture [$arch]
246   --cpu=CPU                select the minimum required CPU (affects
247                            instruction selection, may crash on older CPUs)
248   --enable-pic             build position-independent code
249   --enable-sram            allow use of on-chip SRAM
250   --enable-thumb           compile for Thumb instruction set
251   --disable-symver         disable symbol versioning
252   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
253   --disable-safe-bitstream-reader
254                            disable buffer boundary checking in bitreaders
255                            (faster, but may crash)
256   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
257   --enable-lto             use link-time optimization
258
259 Optimization options (experts only):
260   --disable-asm            disable all assembler optimizations
261   --disable-altivec        disable AltiVec optimizations
262   --disable-amd3dnow       disable 3DNow! optimizations
263   --disable-amd3dnowext    disable 3DNow! extended optimizations
264   --disable-mmx            disable MMX optimizations
265   --disable-mmxext         disable MMXEXT optimizations
266   --disable-sse            disable SSE optimizations
267   --disable-sse2           disable SSE2 optimizations
268   --disable-sse3           disable SSE3 optimizations
269   --disable-ssse3          disable SSSE3 optimizations
270   --disable-sse4           disable SSE4 optimizations
271   --disable-sse42          disable SSE4.2 optimizations
272   --disable-avx            disable AVX optimizations
273   --disable-fma4           disable FMA4 optimizations
274   --disable-avx2           disable AVX2 optimizations
275   --disable-armv5te        disable armv5te optimizations
276   --disable-armv6          disable armv6 optimizations
277   --disable-armv6t2        disable armv6t2 optimizations
278   --disable-vfp            disable VFP optimizations
279   --disable-neon           disable NEON optimizations
280   --disable-vis            disable VIS optimizations
281   --disable-inline-asm     disable use of inline assembler
282   --disable-yasm           disable use of yasm assembler
283
284 Developer options (useful when working on Libav itself):
285   --disable-debug          disable debugging symbols
286   --enable-debug=LEVEL     set the debug level [$debuglevel]
287   --disable-optimizations  disable compiler optimizations
288   --enable-extra-warnings  enable more compiler warnings
289   --samples=PATH           location of test samples for FATE, if not set use
290                            \$LIBAV_SAMPLES at make invocation time.
291   --enable-neon-clobber-test check NEON registers for clobbering (should be
292                            used only for debugging purposes)
293   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
294                            should be used only for debugging purposes)
295   --enable-random          randomly enable/disable components
296   --disable-random
297   --enable-random=LIST     randomly enable/disable specific components or
298   --disable-random=LIST    component groups. LIST is a comma-separated list
299                            of NAME[:PROB] entries where NAME is a component
300                            (group) and PROB the probability associated with
301                            NAME (default 0.5).
302   --random-seed=VALUE      seed value for --enable/disable-random
303
304 NOTE: Object files are built at the place where configure is launched.
305 EOF
306   exit 0
307 }
308
309 quotes='""'
310
311 log(){
312     echo "$@" >> $logfile
313 }
314
315 log_file(){
316     log BEGIN $1
317     pr -n -t $1 >> $logfile
318     log END $1
319 }
320
321 echolog(){
322     log "$@"
323     echo "$@"
324 }
325
326 warn(){
327     log "WARNING: $*"
328     WARNINGS="${WARNINGS}WARNING: $*\n"
329 }
330
331 die(){
332     echolog "$@"
333     cat <<EOF
334
335 If you think configure made a mistake, make sure you are using the latest
336 version from Git.  If the latest version fails, report the problem to the
337 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
338 EOF
339     if disabled logging; then
340         cat <<EOF
341 Rerun configure with logging enabled (do not use --disable-logging), and
342 include the log this produces with your report.
343 EOF
344     else
345         cat <<EOF
346 Include the log file "$logfile" produced by configure as this will help
347 solving the problem.
348 EOF
349     fi
350     exit 1
351 }
352
353 # Avoid locale weirdness, besides we really just want to translate ASCII.
354 toupper(){
355     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
356 }
357
358 tolower(){
359     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
360 }
361
362 c_escape(){
363     echo "$*" | sed 's/["\\]/\\\0/g'
364 }
365
366 sh_quote(){
367     v=$(echo "$1" | sed "s/'/'\\\\''/g")
368     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
369     echo "$v"
370 }
371
372 cleanws(){
373     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
374 }
375
376 filter(){
377     pat=$1
378     shift
379     for v; do
380         eval "case $v in $pat) echo $v ;; esac"
381     done
382 }
383
384 filter_out(){
385     pat=$1
386     shift
387     for v; do
388         eval "case $v in $pat) ;; *) echo $v ;; esac"
389     done
390 }
391
392 map(){
393     m=$1
394     shift
395     for v; do eval $m; done
396 }
397
398 add_suffix(){
399     suffix=$1
400     shift
401     for v; do echo ${v}${suffix}; done
402 }
403
404 set_all(){
405     value=$1
406     shift
407     for var in $*; do
408         eval $var=$value
409     done
410 }
411
412 set_weak(){
413     value=$1
414     shift
415     for var; do
416         eval : \${$var:=$value}
417     done
418 }
419
420 sanitize_var_name(){
421     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
422 }
423
424 set_safe(){
425     var=$1
426     shift
427     eval $(sanitize_var_name "$var")='$*'
428 }
429
430 get_safe(){
431     eval echo \$$(sanitize_var_name "$1")
432 }
433
434 pushvar(){
435     for pvar in $*; do
436         eval level=\${${pvar}_level:=0}
437         eval ${pvar}_${level}="\$$pvar"
438         eval ${pvar}_level=$(($level+1))
439     done
440 }
441
442 popvar(){
443     for pvar in $*; do
444         eval level=\${${pvar}_level:-0}
445         test $level = 0 && continue
446         eval level=$(($level-1))
447         eval $pvar="\${${pvar}_${level}}"
448         eval ${pvar}_level=$level
449         eval unset ${pvar}_${level}
450     done
451 }
452
453 enable(){
454     set_all yes $*
455 }
456
457 disable(){
458     set_all no $*
459 }
460
461 enable_weak(){
462     set_weak yes $*
463 }
464
465 disable_weak(){
466     set_weak no $*
467 }
468
469 enable_safe(){
470     for var; do
471         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
472     done
473 }
474
475 disable_safe(){
476     for var; do
477         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
478     done
479 }
480
481 do_enable_deep(){
482     for var; do
483         enabled $var && continue
484         eval sel="\$${var}_select"
485         eval sgs="\$${var}_suggest"
486         pushvar var sgs
487         enable_deep $sel
488         popvar sgs
489         enable_deep_weak $sgs
490         popvar var
491     done
492 }
493
494 enable_deep(){
495     do_enable_deep $*
496     enable $*
497 }
498
499 enable_deep_weak(){
500     for var; do
501         disabled $var && continue
502         pushvar var
503         do_enable_deep $var
504         popvar var
505         enable_weak $var
506     done
507 }
508
509 enabled(){
510     test "${1#!}" = "$1" && op== || op=!=
511     eval test "x\$${1#!}" $op "xyes"
512 }
513
514 disabled(){
515     test "${1#!}" = "$1" && op== || op=!=
516     eval test "x\$${1#!}" $op "xno"
517 }
518
519 enabled_all(){
520     for opt; do
521         enabled $opt || return 1
522     done
523 }
524
525 disabled_all(){
526     for opt; do
527         disabled $opt || return 1
528     done
529 }
530
531 enabled_any(){
532     for opt; do
533         enabled $opt && return 0
534     done
535 }
536
537 disabled_any(){
538     for opt; do
539         disabled $opt && return 0
540     done
541     return 1
542 }
543
544 set_default(){
545     for opt; do
546         eval : \${$opt:=\$${opt}_default}
547     done
548 }
549
550 is_in(){
551     value=$1
552     shift
553     for var in $*; do
554         [ $var = $value ] && return 0
555     done
556     return 1
557 }
558
559 do_check_deps(){
560     for cfg; do
561         cfg="${cfg#!}"
562         enabled ${cfg}_checking && die "Circular dependency for $cfg."
563         disabled ${cfg}_checking && continue
564         enable ${cfg}_checking
565         append allopts $cfg
566
567         eval dep_all="\$${cfg}_deps"
568         eval dep_any="\$${cfg}_deps_any"
569         eval dep_sel="\$${cfg}_select"
570         eval dep_sgs="\$${cfg}_suggest"
571         eval dep_ifa="\$${cfg}_if"
572         eval dep_ifn="\$${cfg}_if_any"
573
574         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
575         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
576         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
577
578         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
579         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
580         enabled_all  $dep_all || disable $cfg
581         enabled_any  $dep_any || disable $cfg
582         disabled_any $dep_sel && disable $cfg
583
584         if enabled $cfg; then
585             enable_deep $dep_sel
586             enable_deep_weak $dep_sgs
587         fi
588
589         disable ${cfg}_checking
590     done
591 }
592
593 check_deps(){
594     unset allopts
595
596     do_check_deps "$@"
597
598     for cfg in $allopts; do
599         enabled $cfg || continue
600         eval dep_extralibs="\$${cfg}_extralibs"
601         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
602     done
603 }
604
605 print_config(){
606     pfx=$1
607     files=$2
608     shift 2
609     map 'eval echo "$v \${$v:-no}"' "$@" |
610     awk "BEGIN { split(\"$files\", files) }
611         {
612             c = \"$pfx\" toupper(\$1);
613             v = \$2;
614             sub(/yes/, 1, v);
615             sub(/no/,  0, v);
616             for (f in files) {
617                 file = files[f];
618                 if (file ~ /\\.h\$/) {
619                     printf(\"#define %s %d\\n\", c, v) >>file;
620                 } else if (file ~ /\\.asm\$/) {
621                     printf(\"%%define %s %d\\n\", c, v) >>file;
622                 } else if (file ~ /\\.mak\$/) {
623                     n = -v ? \"\" : \"!\";
624                     printf(\"%s%s=yes\\n\", n, c) >>file;
625                 }
626             }
627         }"
628 }
629
630 print_enabled(){
631     suf=$1
632     shift
633     for v; do
634         enabled $v && printf "%s\n" ${v%$suf};
635     done
636 }
637
638 append(){
639     var=$1
640     shift
641     eval "$var=\"\$$var $*\""
642 }
643
644 prepend(){
645     var=$1
646     shift
647     eval "$var=\"$* \$$var\""
648 }
649
650 add_cppflags(){
651     append CPPFLAGS "$@"
652 }
653
654 add_cflags(){
655     append CFLAGS $($cflags_filter "$@")
656 }
657
658 add_asflags(){
659     append ASFLAGS $($asflags_filter "$@")
660 }
661
662 add_ldflags(){
663     append LDFLAGS $($ldflags_filter "$@")
664 }
665
666 add_stripflags(){
667     append STRIPFLAGS "$@"
668 }
669
670 add_extralibs(){
671     prepend extralibs $($ldflags_filter "$@")
672 }
673
674 add_host_cppflags(){
675     append host_cppflags "$@"
676 }
677
678 add_host_cflags(){
679     append host_cflags $($host_cflags_filter "$@")
680 }
681
682 add_host_ldflags(){
683     append host_ldflags $($host_ldflags_filter "$@")
684 }
685
686 add_compat(){
687     append compat_objs $1
688     shift
689     map 'add_cppflags -D$v' "$@"
690 }
691
692 check_cmd(){
693     log "$@"
694     "$@" >> $logfile 2>&1
695 }
696
697 cc_o(){
698     eval printf '%s\\n' $CC_O
699 }
700
701 cc_e(){
702     eval printf '%s\\n' $CC_E
703 }
704
705 check_cc(){
706     log check_cc "$@"
707     cat > $TMPC
708     log_file $TMPC
709     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
710 }
711
712 check_cpp(){
713     log check_cpp "$@"
714     cat > $TMPC
715     log_file $TMPC
716     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
717 }
718
719 as_o(){
720     eval printf '%s\\n' $AS_O
721 }
722
723 check_as(){
724     log check_as "$@"
725     cat > $TMPS
726     log_file $TMPS
727     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
728 }
729
730 check_inline_asm(){
731     log check_inline_asm "$@"
732     name="$1"
733     code="$2"
734     shift 2
735     disable $name
736     check_cc "$@" <<EOF && enable $name
737 void foo(void){ __asm__ volatile($code); }
738 EOF
739 }
740
741 check_insn(){
742     log check_insn "$@"
743     check_inline_asm ${1}_inline "\"$2\""
744     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
745 }
746
747 check_yasm(){
748     log check_yasm "$@"
749     echo "$1" > $TMPS
750     log_file $TMPS
751     shift 1
752     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
753 }
754
755 ld_o(){
756     eval printf '%s\\n' $LD_O
757 }
758
759 check_ld(){
760     log check_ld "$@"
761     flags=$(filter_out '-l*' "$@")
762     libs=$(filter '-l*' "$@")
763     check_cc $($cflags_filter $flags) || return
764     flags=$($ldflags_filter $flags)
765     libs=$($ldflags_filter $libs)
766     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
767 }
768
769 print_include(){
770     hdr=$1
771     test "${hdr%.h}" = "${hdr}" &&
772         echo "#include $hdr"    ||
773         echo "#include <$hdr>"
774 }
775
776 check_code(){
777     log check_code "$@"
778     check=$1
779     headers=$2
780     code=$3
781     shift 3
782     {
783         for hdr in $headers; do
784             print_include $hdr
785         done
786         echo "int main(void) { $code; return 0; }"
787     } | check_$check "$@"
788 }
789
790 check_cppflags(){
791     log check_cppflags "$@"
792     check_cc "$@" <<EOF && append CPPFLAGS "$@"
793 int x;
794 EOF
795 }
796
797 test_cflags(){
798     log test_cflags "$@"
799     set -- $($cflags_filter "$@")
800     check_cc "$@" <<EOF
801 int x;
802 EOF
803 }
804
805 check_cflags(){
806     log check_cflags "$@"
807     test_cflags "$@" && add_cflags "$@"
808 }
809
810 test_ldflags(){
811     log test_ldflags "$@"
812     check_ld "$@" <<EOF
813 int main(void){ return 0; }
814 EOF
815 }
816
817 check_ldflags(){
818     log check_ldflags "$@"
819     test_ldflags "$@" && add_ldflags "$@"
820 }
821
822 test_stripflags(){
823     log test_stripflags "$@"
824     # call check_cc to get a fresh TMPO
825     check_cc <<EOF
826 int main(void) { return 0; }
827 EOF
828     check_cmd $strip $STRIPFLAGS "$@" $TMPO
829 }
830
831 check_stripflags(){
832     log check_stripflags "$@"
833     test_stripflags "$@" && add_stripflags "$@"
834 }
835
836 check_header(){
837     log check_header "$@"
838     header=$1
839     shift
840     disable_safe $header
841     check_cpp "$@" <<EOF && enable_safe $header
842 #include <$header>
843 int x;
844 EOF
845 }
846
847 check_func(){
848     log check_func "$@"
849     func=$1
850     shift
851     disable $func
852     check_ld "$@" <<EOF && enable $func
853 extern int $func();
854 int main(void){ $func(); }
855 EOF
856 }
857
858 check_mathfunc(){
859     log check_mathfunc "$@"
860     func=$1
861     narg=$2
862     shift 2
863     test $narg = 2 && args="f, g" || args="f"
864     disable $func
865     check_ld "$@" <<EOF && enable $func
866 #include <math.h>
867 float foo(float f, float g) { return $func($args); }
868 int main(void){ return 0; }
869 EOF
870 }
871
872 check_func_headers(){
873     log check_func_headers "$@"
874     headers=$1
875     funcs=$2
876     shift 2
877     {
878         for hdr in $headers; do
879             print_include $hdr
880         done
881         for func in $funcs; do
882             echo "long check_$func(void) { return (long) $func; }"
883         done
884         echo "int main(void) { return 0; }"
885     } | check_ld "$@" && enable $funcs && enable_safe $headers
886 }
887
888 check_cpp_condition(){
889     log check_cpp_condition "$@"
890     header=$1
891     condition=$2
892     shift 2
893     check_cpp "$@" <<EOF
894 #include <$header>
895 #if !($condition)
896 #error "unsatisfied condition: $condition"
897 #endif
898 EOF
899 }
900
901 check_lib(){
902     log check_lib "$@"
903     header="$1"
904     func="$2"
905     shift 2
906     check_header $header && check_func $func "$@" && add_extralibs "$@"
907 }
908
909 check_lib2(){
910     log check_lib2 "$@"
911     headers="$1"
912     funcs="$2"
913     shift 2
914     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
915 }
916
917 check_pkg_config(){
918     log check_pkg_config "$@"
919     pkg="$1"
920     headers="$2"
921     funcs="$3"
922     shift 3
923     check_cmd $pkg_config --exists --print-errors $pkg || return
924     pkg_cflags=$($pkg_config --cflags $pkg)
925     pkg_libs=$($pkg_config --libs $pkg)
926     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
927         set_safe ${pkg}_cflags $pkg_cflags   &&
928         set_safe ${pkg}_libs   $pkg_libs
929 }
930
931 check_exec(){
932     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
933 }
934
935 check_exec_crash(){
936     code=$(cat)
937
938     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
939     # are safe but may not be available everywhere.  Thus we use
940     # raise(SIGTERM) instead.  The check is run in a subshell so we
941     # can redirect the "Terminated" message from the shell.  SIGBUS
942     # is not defined by standard C so it is used conditionally.
943
944     (check_exec "$@") >> $logfile 2>&1 <<EOF
945 #include <signal.h>
946 static void sighandler(int sig){
947     raise(SIGTERM);
948 }
949 int foo(void){
950     $code
951 }
952 int (*func_ptr)(void) = foo;
953 int main(void){
954     signal(SIGILL, sighandler);
955     signal(SIGFPE, sighandler);
956     signal(SIGSEGV, sighandler);
957 #ifdef SIGBUS
958     signal(SIGBUS, sighandler);
959 #endif
960     return func_ptr();
961 }
962 EOF
963 }
964
965 check_type(){
966     log check_type "$@"
967     headers=$1
968     type=$2
969     shift 2
970     disable_safe "$type"
971     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
972 }
973
974 check_struct(){
975     log check_struct "$@"
976     headers=$1
977     struct=$2
978     member=$3
979     shift 3
980     disable_safe "${struct}_${member}"
981     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
982         enable_safe "${struct}_${member}"
983 }
984
985 check_builtin(){
986     log check_builtin "$@"
987     name=$1
988     headers=$2
989     builtin=$3
990     shift 3
991     disable "$name"
992     check_code ld "$headers" "$builtin" "$@" && enable "$name"
993 }
994
995 require(){
996     name="$1"
997     header="$2"
998     func="$3"
999     shift 3
1000     check_lib $header $func "$@" || die "ERROR: $name not found"
1001 }
1002
1003 require2(){
1004     name="$1"
1005     headers="$2"
1006     func="$3"
1007     shift 3
1008     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1009 }
1010
1011 require_pkg_config(){
1012     pkg="$1"
1013     check_pkg_config "$@" || die "ERROR: $pkg not found"
1014     add_cflags    $(get_safe ${pkg}_cflags)
1015     add_extralibs $(get_safe ${pkg}_libs)
1016 }
1017
1018 hostcc_e(){
1019     eval printf '%s\\n' $HOSTCC_E
1020 }
1021
1022 hostcc_o(){
1023     eval printf '%s\\n' $HOSTCC_O
1024 }
1025
1026 check_host_cc(){
1027     log check_host_cc "$@"
1028     cat > $TMPC
1029     log_file $TMPC
1030     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1031 }
1032
1033 check_host_cpp(){
1034     log check_host_cpp "$@"
1035     cat > $TMPC
1036     log_file $TMPC
1037     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1038 }
1039
1040 check_host_cppflags(){
1041     log check_host_cppflags "$@"
1042     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1043 int x;
1044 EOF
1045 }
1046
1047 check_host_cflags(){
1048     log check_host_cflags "$@"
1049     set -- $($host_cflags_filter "$@")
1050     check_host_cc "$@" <<EOF && append host_cflags "$@"
1051 int x;
1052 EOF
1053 }
1054
1055 check_host_cpp_condition(){
1056     log check_host_cpp_condition "$@"
1057     header=$1
1058     condition=$2
1059     shift 2
1060     check_host_cpp "$@" <<EOF
1061 #include <$header>
1062 #if !($condition)
1063 #error "unsatisfied condition: $condition"
1064 #endif
1065 EOF
1066 }
1067
1068 apply(){
1069     file=$1
1070     shift
1071     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1072 }
1073
1074 cp_if_changed(){
1075     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1076     mkdir -p "$(dirname $2)"
1077     $cp_f "$1" "$2"
1078 }
1079
1080 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1081 # system-dependent things.
1082
1083 COMPONENT_LIST="
1084     bsfs
1085     decoders
1086     demuxers
1087     encoders
1088     filters
1089     hwaccels
1090     indevs
1091     muxers
1092     outdevs
1093     parsers
1094     protocols
1095 "
1096
1097 EXAMPLE_LIST="
1098     avcodec_example
1099     metadata_example
1100     output_example
1101     transcode_aac_example
1102 "
1103
1104 EXTERNAL_LIBRARY_LIST="
1105     avisynth
1106     bzlib
1107     frei0r
1108     gnutls
1109     libcdio
1110     libdc1394
1111     libfaac
1112     libfdk_aac
1113     libfreetype
1114     libgsm
1115     libilbc
1116     libmp3lame
1117     libopencore_amrnb
1118     libopencore_amrwb
1119     libopencv
1120     libopenjpeg
1121     libopus
1122     libpulse
1123     librtmp
1124     libschroedinger
1125     libspeex
1126     libtheora
1127     libvo_aacenc
1128     libvo_amrwbenc
1129     libvorbis
1130     libvpx
1131     libwavpack
1132     libwebp
1133     libx264
1134     libx265
1135     libxavs
1136     libxvid
1137     openssl
1138     x11grab
1139     zlib
1140 "
1141
1142 HWACCEL_LIST="
1143     dxva2
1144     vaapi
1145     vda
1146     vdpau
1147 "
1148 LIBRARY_LIST="
1149     avcodec
1150     avdevice
1151     avfilter
1152     avformat
1153     avresample
1154     avutil
1155     swscale
1156 "
1157
1158 PROGRAM_LIST="
1159     avconv
1160     avplay
1161     avprobe
1162     avserver
1163 "
1164
1165 CONFIG_LIST="
1166     $COMPONENT_LIST
1167     $EXAMPLE_LIST
1168     $EXTERNAL_LIBRARY_LIST
1169     $HWACCEL_LIST
1170     $LIBRARY_LIST
1171     $PROGRAM_LIST
1172     dct
1173     doc
1174     error_resilience
1175     fft
1176     gpl
1177     gray
1178     hardcoded_tables
1179     lsp
1180     lzo
1181     mdct
1182     memalign_hack
1183     neon_clobber_test
1184     network
1185     nonfree
1186     pod2man
1187     pic
1188     rdft
1189     runtime_cpudetect
1190     safe_bitstream_reader
1191     shared
1192     small
1193     sram
1194     static
1195     swscale_alpha
1196     texi2html
1197     thumb
1198     version3
1199     xmm_clobber_test
1200 "
1201
1202 THREADS_LIST='
1203     pthreads
1204     w32threads
1205 '
1206
1207 ATOMICS_LIST='
1208     atomics_gcc
1209     atomics_suncc
1210     atomics_win32
1211 '
1212
1213 ARCH_LIST='
1214     aarch64
1215     alpha
1216     arm
1217     avr32
1218     avr32_ap
1219     avr32_uc
1220     bfin
1221     ia64
1222     m68k
1223     mips
1224     mips64
1225     parisc
1226     ppc
1227     ppc64
1228     s390
1229     sh4
1230     sparc
1231     sparc64
1232     tilegx
1233     tilepro
1234     tomi
1235     x86
1236     x86_32
1237     x86_64
1238 '
1239
1240 ARCH_EXT_LIST_ARM='
1241     armv5te
1242     armv6
1243     armv6t2
1244     neon
1245     vfp
1246     vfpv3
1247 '
1248
1249 ARCH_EXT_LIST_X86='
1250     amd3dnow
1251     amd3dnowext
1252     avx
1253     avx2
1254     cpunop
1255     fma4
1256     i686
1257     mmx
1258     mmxext
1259     sse
1260     sse2
1261     sse3
1262     sse4
1263     sse42
1264     ssse3
1265 '
1266
1267 ARCH_EXT_LIST="
1268     $ARCH_EXT_LIST_ARM
1269     $ARCH_EXT_LIST_X86
1270     altivec
1271     ppc4xx
1272     vis
1273 "
1274
1275 HAVE_LIST_CMDLINE='
1276     inline_asm
1277     symver
1278     yasm
1279 '
1280
1281 HAVE_LIST_PUB='
1282     bigendian
1283     fast_unaligned
1284 '
1285
1286 MATH_FUNCS="
1287     atanf
1288     atan2f
1289     cbrtf
1290     cosf
1291     exp2
1292     exp2f
1293     expf
1294     isinf
1295     isnan
1296     ldexpf
1297     llrint
1298     llrintf
1299     log2
1300     log2f
1301     log10f
1302     lrint
1303     lrintf
1304     powf
1305     rint
1306     round
1307     roundf
1308     sinf
1309     trunc
1310     truncf
1311 "
1312
1313 HAVE_LIST="
1314     $ARCH_EXT_LIST
1315     $(add_suffix _external $ARCH_EXT_LIST)
1316     $(add_suffix _inline   $ARCH_EXT_LIST)
1317     $HAVE_LIST_CMDLINE
1318     $HAVE_LIST_PUB
1319     $THREADS_LIST
1320     $ATOMICS_LIST
1321     $MATH_FUNCS
1322     aligned_malloc
1323     aligned_stack
1324     alsa_asoundlib_h
1325     altivec_h
1326     arpa_inet_h
1327     asm_mod_q
1328     asm_mod_y
1329     atomic_cas_ptr
1330     atomics_native
1331     attribute_may_alias
1332     attribute_packed
1333     cdio_paranoia_h
1334     cdio_paranoia_paranoia_h
1335     closesocket
1336     CommandLineToArgvW
1337     CryptGenRandom
1338     dcbzl
1339     dev_bktr_ioctl_bt848_h
1340     dev_bktr_ioctl_meteor_h
1341     dev_ic_bt8xx_h
1342     dev_video_bktr_ioctl_bt848_h
1343     dev_video_meteor_ioctl_meteor_h
1344     direct_h
1345     dlfcn_h
1346     dlopen
1347     dos_paths
1348     dxva_h
1349     ebp_available
1350     ebx_available
1351     fast_64bit
1352     fast_clz
1353     fast_cmov
1354     fcntl
1355     fork
1356     getaddrinfo
1357     gethrtime
1358     getopt
1359     GetProcessAffinityMask
1360     GetProcessMemoryInfo
1361     GetProcessTimes
1362     GetSystemTimeAsFileTime
1363     getrusage
1364     getservbyport
1365     gettimeofday
1366     gnu_as
1367     gsm_h
1368     ibm_asm
1369     inet_aton
1370     io_h
1371     inline_asm_labels
1372     isatty
1373     jack_port_get_latency_range
1374     ldbrx
1375     libc_msvcrt
1376     libdc1394_1
1377     libdc1394_2
1378     local_aligned_16
1379     local_aligned_8
1380     localtime_r
1381     loongson
1382     machine_ioctl_bt848_h
1383     machine_ioctl_meteor_h
1384     machine_rw_barrier
1385     malloc_h
1386     MapViewOfFile
1387     memalign
1388     MemoryBarrier
1389     mkstemp
1390     mm_empty
1391     mmap
1392     mprotect
1393     nanosleep
1394     poll_h
1395     posix_memalign
1396     pragma_deprecated
1397     rdtsc
1398     sched_getaffinity
1399     sdl
1400     SetConsoleTextAttribute
1401     setmode
1402     setrlimit
1403     Sleep
1404     sndio_h
1405     socklen_t
1406     soundcard_h
1407     strerror_r
1408     strptime
1409     strtok_r
1410     struct_addrinfo
1411     struct_group_source_req
1412     struct_ip_mreq_source
1413     struct_ipv6_mreq
1414     struct_pollfd
1415     struct_rusage_ru_maxrss
1416     struct_sockaddr_in6
1417     struct_sockaddr_sa_len
1418     struct_sockaddr_storage
1419     struct_v4l2_frmivalenum_discrete
1420     symver_asm_label
1421     symver_gnu_asm
1422     sync_val_compare_and_swap
1423     sysconf
1424     sysctl
1425     sys_mman_h
1426     sys_param_h
1427     sys_resource_h
1428     sys_select_h
1429     sys_soundcard_h
1430     sys_time_h
1431     sys_un_h
1432     sys_videoio_h
1433     threads
1434     unistd_h
1435     usleep
1436     vdpau_x11
1437     vfp_args
1438     VirtualAlloc
1439     windows_h
1440     winsock2_h
1441     xform_asm
1442     xlib
1443     xmm_clobbers
1444 "
1445
1446 # options emitted with CONFIG_ prefix but not available on the command line
1447 CONFIG_EXTRA="
1448     aandcttables
1449     ac3dsp
1450     audio_frame_queue
1451     dsputil
1452     gcrypt
1453     golomb
1454     gplv3
1455     h263dsp
1456     h264chroma
1457     h264dsp
1458     h264pred
1459     h264qpel
1460     hpeldsp
1461     huffman
1462     intrax8
1463     lgplv3
1464     lpc
1465     mpegaudio
1466     mpegaudiodsp
1467     mpegvideo
1468     mpegvideoenc
1469     nettle
1470     rangecoder
1471     riffdec
1472     riffenc
1473     rtpdec
1474     rtpenc_chain
1475     sinewin
1476     videodsp
1477     vp3dsp
1478 "
1479
1480 CMDLINE_SELECT="
1481     $ARCH_EXT_LIST
1482     $CONFIG_LIST
1483     $HAVE_LIST_CMDLINE
1484     $THREADS_LIST
1485     asm
1486     cross_compile
1487     debug
1488     extra_warnings
1489     logging
1490     lto
1491     optimizations
1492 "
1493
1494 PATHS_LIST='
1495     bindir
1496     datadir
1497     docdir
1498     incdir
1499     libdir
1500     mandir
1501     prefix
1502     shlibdir
1503 '
1504
1505 CMDLINE_SET="
1506     $PATHS_LIST
1507     ar
1508     arch
1509     as
1510     build_suffix
1511     cc
1512     cpu
1513     cross_prefix
1514     dep_cc
1515     extra_version
1516     host_cc
1517     host_cflags
1518     host_ld
1519     host_ldflags
1520     host_libs
1521     host_os
1522     ld
1523     logfile
1524     malloc_prefix
1525     nm
1526     optflags
1527     pkg_config
1528     random_seed
1529     samples
1530     sysinclude
1531     sysroot
1532     target_exec
1533     target_os
1534     target_path
1535     target_samples
1536     toolchain
1537 "
1538
1539 CMDLINE_APPEND="
1540     extra_cflags
1541     host_cppflags
1542 "
1543
1544 # code dependency declarations
1545
1546 # architecture extensions
1547
1548 armv5te_deps="arm"
1549 armv6_deps="arm"
1550 armv6t2_deps="arm"
1551 neon_deps_any="aarch64 arm"
1552 vfp_deps_any="aarch64 arm"
1553 vfpv3_deps="vfp"
1554
1555 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1556
1557 altivec_deps="ppc"
1558 ppc4xx_deps="ppc"
1559
1560 vis_deps="sparc"
1561
1562 cpunop_deps="i686"
1563 x86_64_select="i686"
1564 x86_64_suggest="fast_cmov"
1565
1566 amd3dnow_deps="mmx"
1567 amd3dnowext_deps="amd3dnow"
1568 i686_deps="x86"
1569 mmx_deps="x86"
1570 mmxext_deps="mmx"
1571 sse_deps="mmxext"
1572 sse2_deps="sse"
1573 sse3_deps="sse2"
1574 ssse3_deps="sse3"
1575 sse4_deps="ssse3"
1576 sse42_deps="sse4"
1577 avx_deps="sse42"
1578 fma4_deps="avx"
1579 avx2_deps="avx"
1580
1581 mmx_external_deps="yasm"
1582 mmx_inline_deps="inline_asm"
1583 mmx_suggest="mmx_external mmx_inline"
1584
1585 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1586     eval dep=\$${ext}_deps
1587     eval ${ext}_external_deps='"${dep}_external"'
1588     eval ${ext}_inline_deps='"${dep}_inline"'
1589     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1590 done
1591
1592 aligned_stack_if_any="aarch64 ppc x86"
1593 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1594 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1595 fast_unaligned_if_any="aarch64 ppc x86"
1596
1597 need_memalign="altivec neon sse"
1598
1599 # system capabilities
1600 log2_deps="!libc_msvcrt"
1601
1602 symver_if_any="symver_asm_label symver_gnu_asm"
1603
1604 # threading support
1605 atomics_gcc_if="sync_val_compare_and_swap"
1606 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1607 atomics_win32_if="MemoryBarrier"
1608 atomics_native_if_any="$ATOMICS_LIST"
1609 w32threads_deps="atomics_native"
1610 threads_if_any="$THREADS_LIST"
1611
1612 # subsystems
1613 dct_select="rdft"
1614 error_resilience_select="dsputil"
1615 lpc_select="dsputil"
1616 mdct_select="fft"
1617 rdft_select="fft"
1618 mpegaudio_select="mpegaudiodsp"
1619 mpegaudiodsp_select="dct"
1620 mpegvideo_select="dsputil hpeldsp videodsp"
1621 mpegvideoenc_select="mpegvideo"
1622
1623 # decoders / encoders
1624 aac_decoder_select="mdct sinewin"
1625 aac_encoder_select="audio_frame_queue mdct sinewin"
1626 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1627 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1628 ac3_encoder_select="mdct ac3dsp dsputil"
1629 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1630 aic_decoder_select="dsputil golomb"
1631 alac_encoder_select="lpc"
1632 als_decoder_select="dsputil"
1633 amrnb_decoder_select="lsp"
1634 amrwb_decoder_select="lsp"
1635 amv_decoder_select="dsputil hpeldsp"
1636 ape_decoder_select="dsputil"
1637 asv1_decoder_select="dsputil"
1638 asv1_encoder_select="dsputil"
1639 asv2_decoder_select="dsputil"
1640 asv2_encoder_select="dsputil"
1641 atrac1_decoder_select="mdct sinewin"
1642 atrac3_decoder_select="mdct"
1643 atrac3p_decoder_select="mdct sinewin"
1644 bink_decoder_select="dsputil hpeldsp"
1645 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1646 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1647 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1648 cllc_decoder_select="dsputil"
1649 comfortnoise_encoder_select="lpc"
1650 cook_decoder_select="dsputil mdct sinewin"
1651 cscd_decoder_select="lzo"
1652 cscd_decoder_suggest="zlib"
1653 dca_decoder_select="mdct"
1654 dnxhd_decoder_select="dsputil"
1655 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1656 dvvideo_decoder_select="dsputil"
1657 dvvideo_encoder_select="dsputil"
1658 dxa_decoder_deps="zlib"
1659 eac3_decoder_select="ac3_decoder"
1660 eac3_encoder_select="ac3_encoder"
1661 eamad_decoder_select="aandcttables dsputil mpegvideo"
1662 eatgq_decoder_select="aandcttables dsputil"
1663 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1664 ffv1_decoder_select="dsputil golomb rangecoder"
1665 ffv1_encoder_select="dsputil rangecoder"
1666 ffvhuff_decoder_select="dsputil"
1667 ffvhuff_encoder_select="dsputil huffman"
1668 fic_decoder_select="dsputil golomb"
1669 flac_decoder_select="golomb"
1670 flac_encoder_select="dsputil golomb lpc"
1671 flashsv_decoder_deps="zlib"
1672 flashsv_encoder_deps="zlib"
1673 flashsv2_decoder_deps="zlib"
1674 flv_decoder_select="h263_decoder"
1675 flv_encoder_select="h263_encoder"
1676 fourxm_decoder_select="dsputil"
1677 fraps_decoder_select="dsputil huffman"
1678 g2m_decoder_deps="zlib"
1679 g2m_decoder_select="dsputil"
1680 h261_decoder_select="error_resilience mpegvideo"
1681 h261_encoder_select="aandcttables mpegvideoenc"
1682 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo"
1683 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1684 h263i_decoder_select="h263_decoder"
1685 h263p_encoder_select="h263_encoder"
1686 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1687 h264_decoder_suggest="error_resilience"
1688 hevc_decoder_select="dsputil golomb videodsp"
1689 huffyuv_decoder_select="dsputil"
1690 huffyuv_encoder_select="dsputil huffman"
1691 iac_decoder_select="dsputil fft mdct sinewin"
1692 imc_decoder_select="dsputil fft mdct sinewin"
1693 indeo3_decoder_select="hpeldsp"
1694 interplay_video_decoder_select="hpeldsp"
1695 jpegls_decoder_select="dsputil golomb hpeldsp"
1696 jpegls_encoder_select="golomb"
1697 jv_decoder_select="dsputil"
1698 lagarith_decoder_select="dsputil"
1699 ljpeg_encoder_select="aandcttables mpegvideoenc"
1700 loco_decoder_select="golomb"
1701 mdec_decoder_select="dsputil error_resilience mpegvideo"
1702 metasound_decoder_select="lsp mdct sinewin"
1703 mimic_decoder_select="dsputil hpeldsp"
1704 mjpeg_decoder_select="dsputil hpeldsp"
1705 mjpegb_decoder_select="dsputil hpeldsp"
1706 mjpeg_encoder_select="aandcttables dsputil mpegvideoenc"
1707 mlp_decoder_select="dsputil mlp_parser"
1708 motionpixels_decoder_select="dsputil"
1709 mp1_decoder_select="mpegaudio"
1710 mp1float_decoder_select="mpegaudio"
1711 mp2_decoder_select="mpegaudio"
1712 mp2float_decoder_select="mpegaudio"
1713 mp3_decoder_select="mpegaudio"
1714 mp3adu_decoder_select="mpegaudio"
1715 mp3adufloat_decoder_select="mpegaudio"
1716 mp3float_decoder_select="mpegaudio"
1717 mp3on4_decoder_select="mpegaudio"
1718 mp3on4float_decoder_select="mpegaudio"
1719 mpc7_decoder_select="dsputil mpegaudiodsp"
1720 mpc8_decoder_select="dsputil mpegaudiodsp"
1721 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1722 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1723 mpeg1video_decoder_select="error_resilience mpegvideo"
1724 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1725 mpeg2video_decoder_select="error_resilience mpegvideo"
1726 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1727 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1728 mpeg4_encoder_select="h263_encoder"
1729 msmpeg4v1_decoder_select="h263_decoder"
1730 msmpeg4v2_decoder_select="h263_decoder"
1731 msmpeg4v2_encoder_select="h263_encoder"
1732 msmpeg4v3_decoder_select="h263_decoder"
1733 msmpeg4v3_encoder_select="h263_encoder"
1734 mss2_decoder_select="error_resilience vc1_decoder"
1735 mxpeg_decoder_select="dsputil hpeldsp"
1736 nellymoser_decoder_select="mdct sinewin"
1737 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1738 nuv_decoder_select="dsputil lzo"
1739 png_decoder_deps="zlib"
1740 png_decoder_select="dsputil"
1741 png_encoder_deps="zlib"
1742 png_encoder_select="dsputil"
1743 prores_decoder_select="dsputil"
1744 prores_encoder_select="dsputil"
1745 qcelp_decoder_select="lsp"
1746 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1747 ra_144_encoder_select="audio_frame_queue lpc"
1748 ralf_decoder_select="golomb"
1749 rv10_decoder_select="error_resilience h263_decoder h263dsp"
1750 rv10_encoder_select="h263_encoder"
1751 rv20_decoder_select="error_resilience h263_decoder h263dsp"
1752 rv20_encoder_select="h263_encoder"
1753 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1754 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1755 shorten_decoder_select="golomb"
1756 sipr_decoder_select="lsp"
1757 sp5x_decoder_select="dsputil hpeldsp"
1758 svq1_decoder_select="hpeldsp"
1759 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1760 svq3_decoder_select="golomb h264chroma h264dsp h264pred h264qpel hpeldsp mpegvideo videodsp"
1761 svq3_decoder_suggest="error_resilience zlib"
1762 tak_decoder_select="dsputil"
1763 theora_decoder_select="vp3_decoder"
1764 tiff_decoder_suggest="zlib"
1765 tiff_encoder_suggest="zlib"
1766 thp_decoder_select="dsputil hpeldsp"
1767 truehd_decoder_select="mlp_decoder"
1768 truemotion2_decoder_select="dsputil"
1769 truespeech_decoder_select="dsputil"
1770 tscc_decoder_deps="zlib"
1771 twinvq_decoder_select="mdct lsp sinewin"
1772 utvideo_decoder_select="dsputil"
1773 utvideo_encoder_select="dsputil huffman"
1774 vble_decoder_select="dsputil"
1775 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel intrax8"
1776 vc1image_decoder_select="vc1_decoder"
1777 vorbis_decoder_select="mdct"
1778 vorbis_encoder_select="mdct"
1779 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1780 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1781 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1782 vp6a_decoder_select="vp6_decoder"
1783 vp6f_decoder_select="vp6_decoder"
1784 vp8_decoder_select="h264pred videodsp"
1785 vp9_decoder_select="videodsp"
1786 webp_decoder_select="vp8_decoder"
1787 wmapro_decoder_select="mdct sinewin"
1788 wmav1_decoder_select="mdct sinewin"
1789 wmav1_encoder_select="mdct sinewin"
1790 wmav2_decoder_select="mdct sinewin"
1791 wmav2_encoder_select="mdct sinewin"
1792 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1793 wmv1_decoder_select="h263_decoder"
1794 wmv1_encoder_select="h263_encoder"
1795 wmv2_decoder_select="h263_decoder intrax8 videodsp"
1796 wmv2_encoder_select="h263_encoder"
1797 wmv3_decoder_select="vc1_decoder"
1798 wmv3image_decoder_select="wmv3_decoder"
1799 zerocodec_decoder_deps="zlib"
1800 zlib_decoder_deps="zlib"
1801 zlib_encoder_deps="zlib"
1802 zmbv_decoder_deps="zlib"
1803 zmbv_encoder_deps="zlib"
1804
1805 # hardware accelerators
1806 dxva2_deps="dxva2api_h"
1807 vaapi_deps="va_va_h"
1808 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1809 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1810 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1811
1812 h263_vaapi_hwaccel_deps="vaapi"
1813 h263_vaapi_hwaccel_select="h263_decoder"
1814 h263_vdpau_hwaccel_deps="vdpau"
1815 h263_vdpau_hwaccel_select="h263_decoder"
1816 h264_dxva2_hwaccel_deps="dxva2"
1817 h264_dxva2_hwaccel_select="h264_decoder"
1818 h264_vaapi_hwaccel_deps="vaapi"
1819 h264_vaapi_hwaccel_select="h264_decoder"
1820 h264_vda_hwaccel_deps="vda"
1821 h264_vda_hwaccel_select="h264_decoder"
1822 h264_vdpau_hwaccel_deps="vdpau"
1823 h264_vdpau_hwaccel_select="h264_decoder"
1824 mpeg1_vdpau_hwaccel_deps="vdpau"
1825 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1826 mpeg2_dxva2_hwaccel_deps="dxva2"
1827 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1828 mpeg2_vaapi_hwaccel_deps="vaapi"
1829 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1830 mpeg2_vdpau_hwaccel_deps="vdpau"
1831 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1832 mpeg4_vaapi_hwaccel_deps="vaapi"
1833 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1834 mpeg4_vdpau_hwaccel_deps="vdpau"
1835 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1836 vc1_dxva2_hwaccel_deps="dxva2"
1837 vc1_dxva2_hwaccel_select="vc1_decoder"
1838 vc1_vaapi_hwaccel_deps="vaapi"
1839 vc1_vaapi_hwaccel_select="vc1_decoder"
1840 vc1_vdpau_hwaccel_deps="vdpau"
1841 vc1_vdpau_hwaccel_select="vc1_decoder"
1842 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1843 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1844 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1845
1846 # parsers
1847 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1848 mpeg4video_parser_select="error_resilience h263dsp mpegvideo"
1849 mpegvideo_parser_select="error_resilience mpegvideo"
1850 vc1_parser_select="mpegvideo"
1851
1852 # external libraries
1853 libfaac_encoder_deps="libfaac"
1854 libfaac_encoder_select="audio_frame_queue"
1855 libfdk_aac_decoder_deps="libfdk_aac"
1856 libfdk_aac_encoder_deps="libfdk_aac"
1857 libfdk_aac_encoder_select="audio_frame_queue"
1858 libgsm_decoder_deps="libgsm"
1859 libgsm_encoder_deps="libgsm"
1860 libgsm_ms_decoder_deps="libgsm"
1861 libgsm_ms_encoder_deps="libgsm"
1862 libilbc_decoder_deps="libilbc"
1863 libilbc_encoder_deps="libilbc"
1864 libmp3lame_encoder_deps="libmp3lame"
1865 libmp3lame_encoder_select="audio_frame_queue"
1866 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1867 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1868 libopencore_amrnb_encoder_select="audio_frame_queue"
1869 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1870 libopenjpeg_decoder_deps="libopenjpeg"
1871 libopenjpeg_encoder_deps="libopenjpeg"
1872 libopus_decoder_deps="libopus"
1873 libopus_encoder_deps="libopus"
1874 libopus_encoder_select="audio_frame_queue"
1875 libschroedinger_decoder_deps="libschroedinger"
1876 libschroedinger_encoder_deps="libschroedinger"
1877 libspeex_decoder_deps="libspeex"
1878 libspeex_encoder_deps="libspeex"
1879 libspeex_encoder_select="audio_frame_queue"
1880 libtheora_encoder_deps="libtheora"
1881 libvo_aacenc_encoder_deps="libvo_aacenc"
1882 libvo_aacenc_encoder_select="audio_frame_queue"
1883 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1884 libvorbis_encoder_deps="libvorbis"
1885 libvorbis_encoder_select="audio_frame_queue"
1886 libvpx_vp8_decoder_deps="libvpx"
1887 libvpx_vp8_encoder_deps="libvpx"
1888 libvpx_vp9_decoder_deps="libvpx"
1889 libvpx_vp9_encoder_deps="libvpx"
1890 libwavpack_encoder_deps="libwavpack"
1891 libwebp_encoder_deps="libwebp"
1892 libx264_encoder_deps="libx264"
1893 libx265_encoder_deps="libx265"
1894 libxavs_encoder_deps="libxavs"
1895 libxvid_encoder_deps="libxvid"
1896
1897 # demuxers / muxers
1898 ac3_demuxer_select="ac3_parser"
1899 asf_demuxer_select="riffdec"
1900 asf_muxer_select="riffenc"
1901 asf_stream_muxer_select="asf_muxer"
1902 avi_demuxer_select="riffdec"
1903 avi_muxer_select="riffenc"
1904 avisynth_demuxer_deps="avisynth"
1905 avisynth_demuxer_select="riffdec"
1906 caf_demuxer_select="riffdec"
1907 dirac_demuxer_select="dirac_parser"
1908 dxa_demuxer_select="riffdec"
1909 eac3_demuxer_select="ac3_parser"
1910 f4v_muxer_select="mov_muxer"
1911 flac_demuxer_select="flac_parser"
1912 hds_muxer_select="flv_muxer"
1913 hls_muxer_select="mpegts_muxer"
1914 ipod_muxer_select="mov_muxer"
1915 ismv_muxer_select="mov_muxer"
1916 matroska_audio_muxer_select="matroska_muxer"
1917 matroska_demuxer_select="riffdec"
1918 matroska_demuxer_suggest="bzlib lzo zlib"
1919 matroska_muxer_select="riffenc"
1920 mmf_muxer_select="riffenc"
1921 mov_demuxer_select="riffdec"
1922 mov_demuxer_suggest="zlib"
1923 mov_muxer_select="riffenc rtpenc_chain"
1924 mp3_demuxer_select="mpegaudio_parser"
1925 mp4_muxer_select="mov_muxer"
1926 mpegts_muxer_select="adts_muxer latm_muxer"
1927 mpegtsraw_demuxer_select="mpegts_demuxer"
1928 mxf_d10_muxer_select="mxf_muxer"
1929 nut_muxer_select="riffenc"
1930 nuv_demuxer_select="riffdec"
1931 ogg_demuxer_select="golomb"
1932 psp_muxer_select="mov_muxer"
1933 rtp_demuxer_select="sdp_demuxer"
1934 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1935 rtsp_demuxer_select="http_protocol rtpdec"
1936 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
1937 sap_demuxer_select="sdp_demuxer"
1938 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
1939 sdp_demuxer_select="rtpdec"
1940 smoothstreaming_muxer_select="ismv_muxer"
1941 spdif_muxer_select="aac_parser"
1942 tak_demuxer_select="tak_parser"
1943 tg2_muxer_select="mov_muxer"
1944 tgp_muxer_select="mov_muxer"
1945 w64_demuxer_select="wav_demuxer"
1946 wav_demuxer_select="riffdec"
1947 wav_muxer_select="riffenc"
1948 webm_muxer_select="riffenc"
1949 wtv_demuxer_select="riffdec"
1950 xmv_demuxer_select="riffdec"
1951 xwma_demuxer_select="riffdec"
1952
1953 # indevs / outdevs
1954 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1955 alsa_outdev_deps="alsa_asoundlib_h"
1956 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1957 dv1394_indev_deps="dv1394"
1958 dv1394_indev_select="dv_demuxer"
1959 fbdev_indev_deps="linux_fb_h"
1960 jack_indev_deps="jack_jack_h pthreads"
1961 libcdio_indev_deps="libcdio"
1962 libdc1394_indev_deps="libdc1394"
1963 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1964 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1965 pulse_indev_deps="libpulse"
1966 sndio_indev_deps="sndio_h"
1967 sndio_outdev_deps="sndio_h"
1968 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1969 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1970 vfwcap_indev_extralibs="-lavicap32"
1971 x11grab_indev_deps="x11grab XShmCreateImage"
1972
1973 # protocols
1974 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
1975 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
1976 ffrtmpcrypt_protocol_select="tcp_protocol"
1977 ffrtmphttp_protocol_deps="!librtmp_protocol"
1978 ffrtmphttp_protocol_select="http_protocol"
1979 gopher_protocol_select="network"
1980 httpproxy_protocol_select="tcp_protocol"
1981 http_protocol_select="tcp_protocol"
1982 https_protocol_select="tls_protocol"
1983 librtmp_protocol_deps="librtmp"
1984 librtmpe_protocol_deps="librtmp"
1985 librtmps_protocol_deps="librtmp"
1986 librtmpt_protocol_deps="librtmp"
1987 librtmpte_protocol_deps="librtmp"
1988 mmsh_protocol_select="http_protocol"
1989 mmst_protocol_select="network"
1990 rtmp_protocol_deps="!librtmp_protocol"
1991 rtmp_protocol_select="tcp_protocol"
1992 rtmpe_protocol_select="ffrtmpcrypt_protocol"
1993 rtmps_protocol_deps="!librtmp_protocol"
1994 rtmps_protocol_select="tls_protocol"
1995 rtmpt_protocol_select="ffrtmphttp_protocol"
1996 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
1997 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
1998 rtp_protocol_select="udp_protocol"
1999 sctp_protocol_deps="struct_sctp_event_subscribe"
2000 sctp_protocol_select="network"
2001 srtp_protocol_select="rtp_protocol"
2002 tcp_protocol_select="network"
2003 tls_protocol_deps_any="openssl gnutls"
2004 tls_protocol_select="tcp_protocol"
2005 udp_protocol_select="network"
2006 unix_protocol_deps="sys_un_h"
2007 unix_protocol_select="network"
2008
2009 # filters
2010 blackframe_filter_deps="gpl"
2011 boxblur_filter_deps="gpl"
2012 cropdetect_filter_deps="gpl"
2013 delogo_filter_deps="gpl"
2014 drawtext_filter_deps="libfreetype"
2015 frei0r_filter_deps="frei0r dlopen strtok_r"
2016 frei0r_filter_extralibs='$ldl'
2017 frei0r_src_filter_deps="frei0r dlopen strtok_r"
2018 frei0r_src_filter_extralibs='$ldl'
2019 hqdn3d_filter_deps="gpl"
2020 interlace_filter_deps="gpl"
2021 resample_filter_deps="avresample"
2022 ocv_filter_deps="libopencv"
2023 scale_filter_deps="swscale"
2024
2025 # examples
2026 avcodec_example_deps="avcodec avutil"
2027 metadata_example_deps="avformat avutil"
2028 output_example_deps="avcodec avformat avutil swscale"
2029 transcode_aac_example_deps="avcodec avformat avresample"
2030
2031 # libraries
2032 avcodec_deps="avutil"
2033 avdevice_deps="avutil avcodec avformat"
2034 avfilter_deps="avutil"
2035 avformat_deps="avutil avcodec"
2036 avresample_deps="avutil"
2037 swscale_deps="avutil"
2038
2039 # programs
2040 avconv_deps="avcodec avfilter avformat avresample swscale"
2041 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2042                fps_filter null_filter resample_filter scale_filter
2043                setpts_filter trim_filter"
2044 avplay_deps="avcodec avformat avresample swscale sdl"
2045 avplay_libs='$sdl_libs'
2046 avplay_select="rdft"
2047 avprobe_deps="avcodec avformat"
2048 avserver_deps="avformat fork !shared"
2049 avserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2050
2051 # documentation
2052 pod2man_deps="doc"
2053 texi2html_deps="doc"
2054
2055 # default parameters
2056
2057 logfile="config.log"
2058
2059 # installation paths
2060 prefix_default="/usr/local"
2061 bindir_default='${prefix}/bin'
2062 datadir_default='${prefix}/share/avconv'
2063 docdir_default='${prefix}/share/doc/libav'
2064 incdir_default='${prefix}/include'
2065 libdir_default='${prefix}/lib'
2066 mandir_default='${prefix}/share/man'
2067 shlibdir_default="$libdir_default"
2068
2069 # toolchain
2070 ar_default="ar"
2071 cc_default="gcc"
2072 host_cc_default="gcc"
2073 cp_f="cp -f"
2074 ln_s="ln -s -f"
2075 nm_default="nm -g"
2076 objformat="elf"
2077 pkg_config_default=pkg-config
2078 ranlib="ranlib"
2079 strip="strip"
2080 yasmexe="yasm"
2081
2082 nogas=":"
2083
2084 # machine
2085 arch_default=$(uname -m)
2086 cpu="generic"
2087
2088 # OS
2089 target_os_default=$(tolower $(uname -s))
2090 host_os=$target_os_default
2091
2092 # configurable options
2093 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2094
2095 enable asm
2096 enable debug
2097 enable doc
2098 enable optimizations
2099 enable safe_bitstream_reader
2100 enable static
2101 enable swscale_alpha
2102
2103 # By default, enable only those hwaccels that have no external dependencies.
2104 enable dxva2 vdpau
2105
2106 # build settings
2107 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2108 LIBPREF="lib"
2109 LIBSUF=".a"
2110 FULLNAME='$(NAME)$(BUILDSUF)'
2111 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2112 SLIBPREF="lib"
2113 SLIBSUF=".so"
2114 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2115 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2116 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2117 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2118 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2119 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2120
2121 asflags_filter=echo
2122 cflags_filter=echo
2123 ldflags_filter=echo
2124
2125 AS_C='-c'
2126 AS_O='-o $@'
2127 CC_C='-c'
2128 CC_E='-E -o $@'
2129 CC_O='-o $@'
2130 LD_O='-o $@'
2131 LD_LIB='-l%'
2132 LD_PATH='-L'
2133 HOSTCC_C='-c'
2134 HOSTCC_E='-E -o $@'
2135 HOSTCC_O='-o $@'
2136 HOSTLD_O='-o $@'
2137
2138 host_libs='-lm'
2139 host_cflags_filter=echo
2140 host_ldflags_filter=echo
2141
2142 target_path='$(CURDIR)'
2143
2144 # since the object filename is not given with the -MM flag, the compiler
2145 # is only able to print the basename, and we must add the path ourselves
2146 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2147 DEPFLAGS='-MM'
2148
2149 # find source path
2150 if test -f configure; then
2151     source_path=.
2152 else
2153     source_path=$(cd $(dirname "$0"); pwd)
2154     echo "$source_path" | grep -q '[[:blank:]]' &&
2155         die "Out of tree builds are impossible with whitespace in source path."
2156     test -e "$source_path/config.h" &&
2157         die "Out of tree builds are impossible with config.h in source dir."
2158 fi
2159
2160 for v in "$@"; do
2161     r=${v#*=}
2162     l=${v%"$r"}
2163     r=$(sh_quote "$r")
2164     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2165 done
2166
2167 find_things(){
2168     thing=$1
2169     pattern=$2
2170     file=$source_path/$3
2171     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2172 }
2173
2174 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2175 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2176 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2177 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2178 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2179 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2180 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2181 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2182 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2183 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2184 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2185
2186 ALL_COMPONENTS="
2187     $BSF_LIST
2188     $DECODER_LIST
2189     $DEMUXER_LIST
2190     $ENCODER_LIST
2191     $FILTER_LIST
2192     $HWACCEL_LIST
2193     $INDEV_LIST
2194     $MUXER_LIST
2195     $OUTDEV_LIST
2196     $PARSER_LIST
2197     $PROTOCOL_LIST
2198 "
2199
2200 for n in $COMPONENT_LIST; do
2201     v=$(toupper ${n%s})_LIST
2202     eval enable \$$v
2203     eval ${n}_if_any="\$$v"
2204 done
2205
2206 enable $ARCH_EXT_LIST
2207
2208 die_unknown(){
2209     echo "Unknown option \"$1\"."
2210     echo "See $0 --help for available options."
2211     exit 1
2212 }
2213
2214 print_3_columns() {
2215     cat | tr ' ' '\n' | sort | pr -r -3 -t
2216 }
2217
2218 show_list() {
2219     suffix=_$1
2220     shift
2221     echo $* | sed s/$suffix//g | print_3_columns
2222     exit 0
2223 }
2224
2225 rand_list(){
2226     IFS=', '
2227     set -- $*
2228     unset IFS
2229     for thing; do
2230         comp=${thing%:*}
2231         prob=${thing#$comp}
2232         prob=${prob#:}
2233         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2234         echo "prob ${prob:-0.5}"
2235         printf '%s\n' $comp
2236     done
2237 }
2238
2239 do_random(){
2240     action=$1
2241     shift
2242     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2243     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2244 }
2245
2246 for opt do
2247     optval="${opt#*=}"
2248     case "$opt" in
2249         --extra-ldflags=*)
2250             add_ldflags $optval
2251         ;;
2252         --extra-libs=*)
2253             add_extralibs $optval
2254         ;;
2255         --disable-devices)
2256             disable $INDEV_LIST $OUTDEV_LIST
2257         ;;
2258         --enable-debug=*)
2259             debuglevel="$optval"
2260         ;;
2261         --disable-programs)
2262             disable $PROGRAM_LIST
2263         ;;
2264         --disable-everything)
2265             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2266         ;;
2267         --disable-all)
2268             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2269             disable $LIBRARY_LIST $PROGRAM_LIST doc
2270         ;;
2271         --enable-random|--disable-random)
2272             action=${opt%%-random}
2273             do_random ${action#--} $COMPONENT_LIST
2274         ;;
2275         --enable-random=*|--disable-random=*)
2276             action=${opt%%-random=*}
2277             do_random ${action#--} $optval
2278         ;;
2279         --enable-*=*|--disable-*=*)
2280             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2281             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2282             eval list=\$$(toupper $thing)_LIST
2283             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2284             $action $(filter "$name" $list)
2285         ;;
2286         --enable-?*|--disable-?*)
2287             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2288             if is_in $option $COMPONENT_LIST; then
2289                 test $action = disable && action=unset
2290                 eval $action \$$(toupper ${option%s})_LIST
2291             elif is_in $option $CMDLINE_SELECT; then
2292                 $action $option
2293             else
2294                 die_unknown $opt
2295             fi
2296         ;;
2297         --list-*)
2298             NAME="${opt#--list-}"
2299             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2300             NAME=${NAME%s}
2301             eval show_list $NAME \$$(toupper $NAME)_LIST
2302         ;;
2303         --help|-h) show_help
2304         ;;
2305         *)
2306             optname="${opt%%=*}"
2307             optname="${optname#--}"
2308             optname=$(echo "$optname" | sed 's/-/_/g')
2309             if is_in $optname $CMDLINE_SET; then
2310                 eval $optname='$optval'
2311             elif is_in $optname $CMDLINE_APPEND; then
2312                 append $optname "$optval"
2313             else
2314                 die_unknown $opt
2315             fi
2316         ;;
2317     esac
2318 done
2319
2320 disabled logging && logfile=/dev/null
2321
2322 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2323 set >> $logfile
2324
2325 test -n "$cross_prefix" && enable cross_compile
2326
2327 if enabled cross_compile; then
2328     test -n "$arch" && test -n "$target_os" ||
2329         die "Must specify target arch and OS when cross-compiling"
2330 fi
2331
2332 ar_default="${cross_prefix}${ar_default}"
2333 cc_default="${cross_prefix}${cc_default}"
2334 nm_default="${cross_prefix}${nm_default}"
2335 pkg_config_default="${cross_prefix}${pkg_config_default}"
2336 ranlib="${cross_prefix}${ranlib}"
2337 strip="${cross_prefix}${strip}"
2338
2339 sysinclude_default="${sysroot}/usr/include"
2340
2341 case "$toolchain" in
2342     clang-asan)
2343         cc_default="clang"
2344         add_cflags  -fsanitize=address
2345         add_ldflags -fsanitize=address
2346     ;;
2347     clang-tsan)
2348         cc_default="clang"
2349         add_cflags  -fsanitize=thread -pie
2350         add_ldflags -fsanitize=thread -pie
2351     ;;
2352     clang-usan)
2353         cc_default="clang"
2354         add_cflags  -fsanitize=undefined
2355         add_ldflags -fsanitize=undefined
2356     ;;
2357     gcc-asan)
2358         cc_default="gcc"
2359         add_cflags  -fsanitize=address
2360         add_ldflags -fsanitize=address
2361     ;;
2362     gcc-tsan)
2363         cc_default="gcc"
2364         add_cflags  -fsanitize=thread -pie -fPIC
2365         add_ldflags -fsanitize=thread -pie -fPIC
2366     ;;
2367     gcc-usan)
2368         cc_default="gcc"
2369         add_cflags  -fsanitize=undefined
2370         add_ldflags -fsanitize=undefined
2371     ;;
2372     valgrind-massif)
2373         target_exec_default="valgrind"
2374         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2375     ;;
2376     valgrind-memcheck)
2377         target_exec_default="valgrind"
2378         target_exec_args="--track-origins=yes --leak-check=full"
2379     ;;
2380     msvc)
2381         # Check whether the current MSVC version needs the C99 converter.
2382         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2383         # support enough of C99 to build libav. Default to the new
2384         # behaviour if the regexp was unable to match anything, since this
2385         # successfully parses the version number of existing supported
2386         # versions that require the converter (MSVC 2010 and 2012).
2387         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2388         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2389             cc_default="cl"
2390         else
2391             cc_default="c99wrap cl"
2392         fi
2393         ld_default="link"
2394         nm_default="dumpbin -symbols"
2395         ar_default="lib"
2396         target_os_default="win32"
2397         # Use a relative path for TMPDIR. This makes sure all the
2398         # ffconf temp files are written with a relative path, avoiding
2399         # issues with msys/win32 path conversion for MSVC parameters
2400         # such as -Fo<file> or -out:<file>.
2401         TMPDIR=.
2402     ;;
2403     icl)
2404         cc_default="icl"
2405         ld_default="xilink"
2406         nm_default="dumpbin -symbols"
2407         ar_default="xilib"
2408         target_os_default="win32"
2409         TMPDIR=.
2410     ;;
2411     gcov)
2412         add_cflags  -fprofile-arcs -ftest-coverage
2413         add_ldflags -fprofile-arcs -ftest-coverage
2414     ;;
2415     hardened)
2416         add_cflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2417         add_ldflags -Wl,-z,relro -Wl,-z,now
2418     ;;
2419     ?*)
2420         die "Unknown toolchain $toolchain"
2421     ;;
2422 esac
2423
2424 set_default arch cc pkg_config sysinclude target_exec target_os
2425 enabled cross_compile || host_cc_default=$cc
2426 set_default host_cc
2427
2428 if ! $pkg_config --version >/dev/null 2>&1; then
2429     warn "$pkg_config not found, library detection may fail."
2430     pkg_config=false
2431 fi
2432
2433 exesuf() {
2434     case $1 in
2435         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2436     esac
2437 }
2438
2439 EXESUF=$(exesuf $target_os)
2440 HOSTEXESUF=$(exesuf $host_os)
2441
2442 # set temporary file name
2443 : ${TMPDIR:=$TEMPDIR}
2444 : ${TMPDIR:=$TMP}
2445 : ${TMPDIR:=/tmp}
2446
2447 if ! check_cmd mktemp -u XXXXXX; then
2448     # simple replacement for missing mktemp
2449     # NOT SAFE FOR GENERAL USE
2450     mktemp(){
2451         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2452     }
2453 fi
2454
2455 tmpfile(){
2456     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2457         (set -C; exec > $tmp) 2>/dev/null ||
2458         die "Unable to create temporary file in $TMPDIR."
2459     append TMPFILES $tmp
2460     eval $1=$tmp
2461 }
2462
2463 trap 'rm -f -- $TMPFILES' EXIT
2464
2465 tmpfile TMPASM .asm
2466 tmpfile TMPC   .c
2467 tmpfile TMPE   $EXESUF
2468 tmpfile TMPH   .h
2469 tmpfile TMPO   .o
2470 tmpfile TMPS   .S
2471 tmpfile TMPSH  .sh
2472 tmpfile TMPV   .ver
2473
2474 unset -f mktemp
2475
2476 chmod +x $TMPE
2477
2478 # make sure we can execute files in $TMPDIR
2479 cat > $TMPSH 2>> $logfile <<EOF
2480 #! /bin/sh
2481 EOF
2482 chmod +x $TMPSH >> $logfile 2>&1
2483 if ! $TMPSH >> $logfile 2>&1; then
2484     cat <<EOF
2485 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2486 variable to another directory and make sure that it is not mounted noexec.
2487 EOF
2488     die "Sanity test failed."
2489 fi
2490
2491 ccc_flags(){
2492     for flag; do
2493         case $flag in
2494             -std=c99)           echo -c99                       ;;
2495             -mcpu=*)            echo -arch ${flag#*=}           ;;
2496             -mieee)             echo -ieee                      ;;
2497             -O*|-fast)          echo $flag                      ;;
2498             -fno-math-errno)    echo -assume nomath_errno       ;;
2499             -g)                 echo -g3                        ;;
2500             -Wall)              echo -msg_enable level2         ;;
2501             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2502             -Wl,*)              echo $flag                      ;;
2503             -f*|-W*)                                            ;;
2504             *)                  echo $flag                      ;;
2505         esac
2506    done
2507 }
2508
2509 cparser_flags(){
2510     for flag; do
2511         case $flag in
2512             -Wno-switch)             echo -Wno-switch-enum ;;
2513             -Wno-format-zero-length) ;;
2514             -Wdisabled-optimization) ;;
2515             -Wno-pointer-sign)       echo -Wno-other ;;
2516             *)                       echo $flag ;;
2517         esac
2518     done
2519 }
2520
2521 msvc_common_flags(){
2522     for flag; do
2523         case $flag in
2524             # In addition to specifying certain flags under the compiler
2525             # specific filters, they must be specified here as well or else the
2526             # generic catch all at the bottom will print the original flag.
2527             -Wall)                ;;
2528             -std=c99)             ;;
2529             # Common flags
2530             -fomit-frame-pointer) ;;
2531             -g)                   echo -Z7 ;;
2532             -fno-math-errno)      ;;
2533             -fno-common)          ;;
2534             -fno-signed-zeros)    ;;
2535             -fPIC)                ;;
2536             -mthumb)              ;;
2537             -march=*)             ;;
2538             -lz)                  echo zlib.lib ;;
2539             -lavifil32)           echo vfw32.lib ;;
2540             -lavicap32)           echo vfw32.lib user32.lib ;;
2541             -l*)                  echo ${flag#-l}.lib ;;
2542             *)                    echo $flag ;;
2543         esac
2544     done
2545 }
2546
2547 msvc_flags(){
2548     msvc_common_flags "$@"
2549     for flag; do
2550         case $flag in
2551             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2552                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2553                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2554                                        -wd4273 ;;
2555         esac
2556     done
2557 }
2558
2559 icl_flags(){
2560     msvc_common_flags "$@"
2561     for flag; do
2562         case $flag in
2563             # Despite what Intel's documentation says -Wall, which is supported
2564             # on Windows, does enable remarks so disable them here.
2565             -Wall)                echo $flag -Qdiag-disable:remark ;;
2566             -std=c99)             echo -Qstd=c99 ;;
2567         esac
2568     done
2569 }
2570
2571 pgi_flags(){
2572     for flag; do
2573         case $flag in
2574             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2575             -fomit-frame-pointer) echo -Mnoframe ;;
2576             -g)                   echo -gopt ;;
2577             *)                    echo $flag ;;
2578         esac
2579     done
2580 }
2581
2582 suncc_flags(){
2583     for flag; do
2584         case $flag in
2585             -march=*|-mcpu=*)
2586                 case "${flag#*=}" in
2587                     native)                   echo -xtarget=native       ;;
2588                     v9|niagara)               echo -xarch=sparc          ;;
2589                     ultrasparc)               echo -xarch=sparcvis       ;;
2590                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2591                     i586|pentium)             echo -xchip=pentium        ;;
2592                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2593                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2594                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2595                     pentium4*)          echo -xtarget=pentium4           ;;
2596                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2597                     *-sse3)             echo -xarch=sse3                 ;;
2598                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2599                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2600                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2601                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2602                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2603                     k8|opteron|athlon64|athlon-fx)
2604                                                echo -xarch=sse2a         ;;
2605                     athlon*)                   echo -xarch=pentium_proa  ;;
2606                 esac
2607                 ;;
2608             -std=c99)             echo -xc99              ;;
2609             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2610             -fPIC)                echo -KPIC -xcode=pic32 ;;
2611             -W*,*)                echo $flag              ;;
2612             -f*-*|-W*|-mimpure-text)                      ;;
2613             -shared)              echo -G                 ;;
2614             *)                    echo $flag              ;;
2615         esac
2616     done
2617 }
2618
2619 tms470_flags(){
2620     for flag; do
2621         case $flag in
2622             -march=*|-mcpu=*)
2623                 case "${flag#*=}" in
2624                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2625                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2626                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2627                     armv6*|arm11*)          echo -mv=6   ;;
2628                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2629                                             echo -mv=5e  ;;
2630                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2631                 esac
2632                 ;;
2633             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2634             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2635             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2636             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2637             -msoft-float)   echo --float_support=vfplib       ;;
2638             -O[0-3]|-mf=*)  echo $flag                        ;;
2639             -g)             echo -g -mn                       ;;
2640             -pds=*)         echo $flag                        ;;
2641             -D*|-I*)        echo $flag                        ;;
2642             --gcc|--abi=*)  echo $flag                        ;;
2643             -me)            echo $flag                        ;;
2644         esac
2645     done
2646 }
2647
2648 probe_cc(){
2649     pfx=$1
2650     _cc=$2
2651
2652     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2653     unset _ld_o _ldflags _ld_lib _ld_path
2654     unset _depflags _DEPCMD _DEPFLAGS
2655     _flags_filter=echo
2656
2657     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2658         _type=llvm_gcc
2659         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2660         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2661         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2662         _cflags_speed='-O3'
2663         _cflags_size='-Os'
2664     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2665         _type=gcc
2666         gcc_version=$($_cc --version | head -n1)
2667         gcc_basever=$($_cc -dumpversion)
2668         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2669         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2670         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2671         if ! $_cc -dumpversion | grep -q '^2\.'; then
2672             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2673         fi
2674         _cflags_speed='-O3'
2675         _cflags_size='-Os'
2676     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2677         _type=icc
2678         _ident=$($_cc --version | head -n1)
2679         _depflags='-MMD'
2680         _cflags_speed='-O3'
2681         _cflags_size='-Os'
2682         _cflags_noopt='-O1'
2683     elif $_cc -v 2>&1 | grep -q xlc; then
2684         _type=xlc
2685         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2686         _cflags_speed='-O5'
2687         _cflags_size='-O5 -qcompact'
2688     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2689         _type=ccc
2690         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2691         _DEPFLAGS='-M'
2692         _cflags_speed='-fast'
2693         _cflags_size='-O1'
2694         _flags_filter=ccc_flags
2695     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2696         test -d "$sysroot" || die "No valid sysroot specified."
2697         _type=armcc
2698         _ident=$($_cc --vsn | head -n1)
2699         armcc_conf="$PWD/armcc.conf"
2700         $_cc --arm_linux_configure                 \
2701              --arm_linux_config_file="$armcc_conf" \
2702              --configure_sysroot="$sysroot"        \
2703              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2704              die "Error creating armcc configuration file."
2705         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2706         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2707         as_default="${cross_prefix}gcc"
2708         _depflags='-MMD'
2709         _cflags_speed='-O3'
2710         _cflags_size='-Os'
2711     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2712         _type=tms470
2713         _ident=$($_cc -version | head -n1 | tr -s ' ')
2714         _flags='--gcc --abi=eabi -me'
2715         _cc_e='-ppl -fe=$@'
2716         _cc_o='-fe=$@'
2717         _depflags='-ppa -ppd=$(@:.o=.d)'
2718         _cflags_speed='-O3 -mf=5'
2719         _cflags_size='-O3 -mf=2'
2720         _flags_filter=tms470_flags
2721     elif $_cc -v 2>&1 | grep -q clang; then
2722         _type=clang
2723         _ident=$($_cc --version | head -n1)
2724         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2725         _cflags_speed='-O3'
2726         _cflags_size='-Os'
2727     elif $_cc -V 2>&1 | grep -q Sun; then
2728         _type=suncc
2729         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2730         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2731         _DEPFLAGS='-xM1 -xc99'
2732         _ldflags='-std=c99'
2733         _cflags_speed='-O5'
2734         _cflags_size='-O5 -xspace'
2735         _flags_filter=suncc_flags
2736     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2737         _type=pathscale
2738         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2739         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2740         _cflags_speed='-O2'
2741         _cflags_size='-Os'
2742         _flags_filter='filter_out -Wdisabled-optimization'
2743     elif $_cc -v 2>&1 | grep -q Open64; then
2744         _type=open64
2745         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2746         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2747         _cflags_speed='-O2'
2748         _cflags_size='-Os'
2749         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2750     elif $_cc -V 2>&1 | grep -q Portland; then
2751         _type=pgi
2752         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2753         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2754         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2755         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2756         _cflags_noopt="-O1"
2757         _flags_filter=pgi_flags
2758     elif $_cc 2>&1 | grep -q Microsoft; then
2759         _type=msvc
2760         _ident=$($cc 2>&1 | head -n1)
2761         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2762         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2763         _cflags_speed="-O2"
2764         _cflags_size="-O1"
2765         if $_cc 2>&1 | grep -q Linker; then
2766             _ld_o='-out:$@'
2767         else
2768             _ld_o='-Fe$@'
2769         fi
2770         _cc_o='-Fo$@'
2771         _cc_e='-P -Fi$@'
2772         _flags_filter=msvc_flags
2773         _ld_lib='lib%.a'
2774         _ld_path='-libpath:'
2775         _flags='-nologo'
2776         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2777         if [ $pfx = hostcc ]; then
2778             append _cflags -Dsnprintf=_snprintf
2779         fi
2780     elif $_cc 2>&1 | grep -q Intel; then
2781         _type=icl
2782         _ident=$($cc 2>&1 | head -n1)
2783         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2784         # Not only is O3 broken on 13.x+ but it is slower on all previous
2785         # versions (tested) as well.
2786         _cflags_speed="-O2"
2787         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2788         if $_cc 2>&1 | grep -q Linker; then
2789             _ld_o='-out:$@'
2790         else
2791             _ld_o='-Fe$@'
2792         fi
2793         _cc_o='-Fo$@'
2794         _cc_e='-P'
2795         _flags_filter=icl_flags
2796         _ld_lib='lib%.a'
2797         _ld_path='-libpath:'
2798         # -Qdiag-error to make icl error when seeing certain unknown arguments
2799         _flags='-nologo -Qdiag-error:4044,10157'
2800         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2801         # with MSVC which enables it by default.
2802         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2803         if [ $pfx = hostcc ]; then
2804             append _cflags -Dsnprintf=_snprintf
2805         fi
2806     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
2807         _type=cparser
2808         _ident=$($_cc --version | head -n1)
2809         _depflags='-MMD'
2810         _cflags_speed='-O4'
2811         _cflags_size='-O2'
2812         _flags_filter=cparser_flags
2813     fi
2814
2815     eval ${pfx}_type=\$_type
2816     eval ${pfx}_ident=\$_ident
2817 }
2818
2819 set_ccvars(){
2820     eval ${1}_C=\${_cc_c-\${${1}_C}}
2821     eval ${1}_E=\${_cc_e-\${${1}_E}}
2822     eval ${1}_O=\${_cc_o-\${${1}_O}}
2823
2824     if [ -n "$_depflags" ]; then
2825         eval ${1}_DEPFLAGS=\$_depflags
2826     else
2827         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2828         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2829         eval DEP${1}FLAGS=\$_flags
2830     fi
2831 }
2832
2833 probe_cc cc "$cc"
2834 cflags_filter=$_flags_filter
2835 cflags_speed=$_cflags_speed
2836 cflags_size=$_cflags_size
2837 cflags_noopt=$_cflags_noopt
2838 add_cflags $_flags $_cflags
2839 cc_ldflags=$_ldflags
2840 set_ccvars CC
2841
2842 probe_cc hostcc "$host_cc"
2843 host_cflags_filter=$_flags_filter
2844 add_host_cflags  $_flags $_cflags
2845 set_ccvars HOSTCC
2846
2847 test -n "$cc_type" && enable $cc_type ||
2848     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2849
2850 : ${as_default:=$cc}
2851 : ${dep_cc_default:=$cc}
2852 : ${ld_default:=$cc}
2853 : ${host_ld_default:=$host_cc}
2854 set_default ar as dep_cc ld host_ld
2855
2856 probe_cc as "$as"
2857 asflags_filter=$_flags_filter
2858 add_asflags $_flags $_cflags
2859 set_ccvars AS
2860
2861 probe_cc ld "$ld"
2862 ldflags_filter=$_flags_filter
2863 add_ldflags $_flags $_ldflags
2864 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2865 LD_O=${_ld_o-$LD_O}
2866 LD_LIB=${_ld_lib-$LD_LIB}
2867 LD_PATH=${_ld_path-$LD_PATH}
2868
2869 probe_cc hostld "$host_ld"
2870 host_ldflags_filter=$_flags_filter
2871 add_host_ldflags $_flags $_ldflags
2872 HOSTLD_O=${_ld_o-$HOSTLD_O}
2873
2874 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2875     probe_cc depcc "$dep_cc"
2876     CCDEP=${_DEPCMD:-$DEPCMD}
2877     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2878     DEPCCFLAGS=$_flags
2879 fi
2880
2881 if $ar 2>&1 | grep -q Microsoft; then
2882     arflags="-nologo"
2883     ar_o='-out:$@'
2884 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2885     arflags="rq"
2886     ar_o='$@'
2887 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
2888     arflags='-Xany -r -c'
2889     ar_o='$@'
2890 else
2891     arflags="rc"
2892     ar_o='$@'
2893 fi
2894
2895 add_cflags $extra_cflags
2896 add_asflags $extra_cflags
2897
2898 if test -n "$sysroot"; then
2899     case "$cc_type" in
2900         gcc|llvm_gcc|clang)
2901             add_cppflags --sysroot="$sysroot"
2902             add_ldflags --sysroot="$sysroot"
2903         ;;
2904         tms470)
2905             add_cppflags -I"$sysinclude"
2906             add_ldflags  --sysroot="$sysroot"
2907         ;;
2908     esac
2909 fi
2910
2911 if test "$cpu" = host; then
2912     enabled cross_compile &&
2913         die "--cpu=host makes no sense when cross-compiling."
2914
2915     case "$cc_type" in
2916         gcc|llvm_gcc)
2917             check_native(){
2918                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2919                 sed -n "/cc1.*$1=/{
2920                             s/.*$1=\\([^ ]*\\).*/\\1/
2921                             p
2922                             q
2923                         }" $TMPE
2924             }
2925             cpu=$(check_native -march || check_native -mcpu)
2926         ;;
2927     esac
2928
2929     test "${cpu:-host}" = host &&
2930         die "--cpu=host not supported with compiler $cc"
2931 fi
2932
2933 # Deal with common $arch aliases
2934 case "$arch" in
2935     aarch64|arm64)
2936         arch="aarch64"
2937     ;;
2938     arm*)
2939         arch="arm"
2940     ;;
2941     mips*|IP*)
2942         arch="mips"
2943     ;;
2944     parisc*|hppa*)
2945         arch="parisc"
2946     ;;
2947     "Power Macintosh"|ppc*|powerpc*)
2948         arch="ppc"
2949     ;;
2950     s390|s390x)
2951         arch="s390"
2952     ;;
2953     sh4|sh)
2954         arch="sh4"
2955     ;;
2956     sun4u|sparc*)
2957         arch="sparc"
2958     ;;
2959     tilegx|tile-gx)
2960         arch="tilegx"
2961     ;;
2962     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
2963         arch="x86"
2964     ;;
2965 esac
2966
2967 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2968 enable $arch
2969
2970 # Add processor-specific flags
2971 if enabled aarch64; then
2972
2973     case $cpu in
2974         armv*)
2975             cpuflags="-march=$cpu"
2976         ;;
2977         *)
2978             cpuflags="-mcpu=$cpu"
2979         ;;
2980     esac
2981
2982 elif enabled alpha; then
2983
2984     cpuflags="-mcpu=$cpu"
2985
2986 elif enabled arm; then
2987
2988     check_arm_arch() {
2989         check_cpp_condition stddef.h \
2990             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
2991             $cpuflags
2992     }
2993
2994     probe_arm_arch() {
2995         if   check_arm_arch 4;        then echo armv4;
2996         elif check_arm_arch 4T;       then echo armv4t;
2997         elif check_arm_arch 5;        then echo armv5;
2998         elif check_arm_arch 5E;       then echo armv5e;
2999         elif check_arm_arch 5T;       then echo armv5t;
3000         elif check_arm_arch 5TE;      then echo armv5te;
3001         elif check_arm_arch 5TEJ;     then echo armv5te;
3002         elif check_arm_arch 6;        then echo armv6;
3003         elif check_arm_arch 6J;       then echo armv6j;
3004         elif check_arm_arch 6K;       then echo armv6k;
3005         elif check_arm_arch 6Z;       then echo armv6z;
3006         elif check_arm_arch 6ZK;      then echo armv6zk;
3007         elif check_arm_arch 6T2;      then echo armv6t2;
3008         elif check_arm_arch 7;        then echo armv7;
3009         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3010         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3011         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3012         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3013         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3014         fi
3015     }
3016
3017     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3018
3019     case $cpu in
3020         armv*)
3021             cpuflags="-march=$cpu"
3022             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3023         ;;
3024         *)
3025             cpuflags="-mcpu=$cpu"
3026             case $cpu in
3027                 cortex-a*)                               subarch=armv7a  ;;
3028                 cortex-r*)                               subarch=armv7r  ;;
3029                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3030                 arm11*)                                  subarch=armv6   ;;
3031                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3032                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3033                 *)                             subarch=$(probe_arm_arch) ;;
3034             esac
3035         ;;
3036     esac
3037
3038     case "$subarch" in
3039         armv5t*)    enable fast_clz                ;;
3040         armv[6-8]*) enable fast_clz fast_unaligned ;;
3041     esac
3042
3043 elif enabled avr32; then
3044
3045     case $cpu in
3046         ap7[02]0[0-2])
3047             subarch="avr32_ap"
3048             cpuflags="-mpart=$cpu"
3049         ;;
3050         ap)
3051             subarch="avr32_ap"
3052             cpuflags="-march=$cpu"
3053         ;;
3054         uc3[ab]*)
3055             subarch="avr32_uc"
3056             cpuflags="-mcpu=$cpu"
3057         ;;
3058         uc)
3059             subarch="avr32_uc"
3060             cpuflags="-march=$cpu"
3061         ;;
3062     esac
3063
3064 elif enabled bfin; then
3065
3066     cpuflags="-mcpu=$cpu"
3067
3068 elif enabled mips; then
3069
3070     cpuflags="-march=$cpu"
3071
3072 elif enabled ppc; then
3073
3074     case $(tolower $cpu) in
3075         601|ppc601|powerpc601)
3076             cpuflags="-mcpu=601"
3077             disable altivec
3078         ;;
3079         603*|ppc603*|powerpc603*)
3080             cpuflags="-mcpu=603"
3081             disable altivec
3082         ;;
3083         604*|ppc604*|powerpc604*)
3084             cpuflags="-mcpu=604"
3085             disable altivec
3086         ;;
3087         g3|75*|ppc75*|powerpc75*)
3088             cpuflags="-mcpu=750"
3089             disable altivec
3090         ;;
3091         g4|745*|ppc745*|powerpc745*)
3092             cpuflags="-mcpu=7450"
3093         ;;
3094         74*|ppc74*|powerpc74*)
3095             cpuflags="-mcpu=7400"
3096         ;;
3097         g5|970|ppc970|powerpc970)
3098             cpuflags="-mcpu=970"
3099         ;;
3100         power[3-7]*)
3101             cpuflags="-mcpu=$cpu"
3102         ;;
3103         cell)
3104             cpuflags="-mcpu=cell"
3105             enable ldbrx
3106         ;;
3107         e500mc)
3108             cpuflags="-mcpu=e500mc"
3109             disable altivec
3110         ;;
3111         e500v2)
3112             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3113             disable altivec
3114         ;;
3115         e500)
3116             cpuflags="-mcpu=8540 -mhard-float"
3117             disable altivec
3118         ;;
3119     esac
3120
3121 elif enabled sparc; then
3122
3123     case $cpu in
3124         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3125             cpuflags="-mcpu=$cpu"
3126             disable vis
3127         ;;
3128         ultrasparc*|niagara[234])
3129             cpuflags="-mcpu=$cpu"
3130         ;;
3131     esac
3132
3133 elif enabled x86; then
3134
3135     case $cpu in
3136         i[345]86|pentium)
3137             cpuflags="-march=$cpu"
3138             disable mmx
3139         ;;
3140         # targets that do NOT support nopl and conditional mov (cmov)
3141         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3142             cpuflags="-march=$cpu"
3143             disable i686
3144         ;;
3145         # targets that do support nopl and conditional mov (cmov)
3146         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3147             cpuflags="-march=$cpu"
3148             enable i686
3149             enable fast_cmov
3150         ;;
3151         # targets that do support conditional mov but on which it's slow
3152         pentium4|pentium4m|prescott|nocona)
3153             cpuflags="-march=$cpu"
3154             enable i686
3155             disable fast_cmov
3156         ;;
3157     esac
3158
3159 fi
3160
3161 if [ "$cpu" != generic ]; then
3162     add_cflags  $cpuflags
3163     add_asflags $cpuflags
3164 fi
3165
3166 # compiler sanity check
3167 check_exec <<EOF
3168 int main(void){ return 0; }
3169 EOF
3170 if test "$?" != 0; then
3171     echo "$cc is unable to create an executable file."
3172     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3173         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3174         echo "Only do this if you know what cross compiling means."
3175     fi
3176     die "C compiler test failed."
3177 fi
3178
3179 add_cppflags -D_ISOC99_SOURCE
3180 check_cflags -std=c99
3181 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3182 #include <stdlib.h>
3183 EOF
3184 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3185 #include <stdlib.h>
3186 EOF
3187
3188 add_host_cppflags -D_ISOC99_SOURCE
3189 check_host_cflags -std=c99
3190 check_host_cflags -Wall
3191 check_host_cflags -O3
3192
3193 check_64bit(){
3194     arch32=$1
3195     arch64=$2
3196     expr=$3
3197     check_code cc "" "int test[2*($expr) - 1]" &&
3198         subarch=$arch64 || subarch=$arch32
3199 }
3200
3201 case "$arch" in
3202     aarch64|alpha|ia64)
3203         spic=$shared
3204     ;;
3205     mips)
3206         check_64bit mips mips64 '_MIPS_SIM > 1'
3207         spic=$shared
3208     ;;
3209     parisc)
3210         check_64bit parisc parisc64 'sizeof(void *) > 4'
3211         spic=$shared
3212     ;;
3213     ppc)
3214         check_64bit ppc ppc64 'sizeof(void *) > 4'
3215         spic=$shared
3216     ;;
3217     sparc)
3218         check_64bit sparc sparc64 'sizeof(void *) > 4'
3219         spic=$shared
3220     ;;
3221     x86)
3222         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3223         if test "$subarch" = "x86_64"; then
3224             spic=$shared
3225         fi
3226     ;;
3227 esac
3228
3229 enable $subarch
3230 enabled spic && enable_weak pic
3231
3232 # OS specific
3233 case $target_os in
3234     aix)
3235         SHFLAGS=-shared
3236         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3237         enabled shared && add_ldflags -Wl,-brtl
3238         ;;
3239     haiku)
3240         prefix_default="/boot/common"
3241         network_extralibs="-lnetwork"
3242         host_libs=
3243         ;;
3244     sunos)
3245         SHFLAGS='-shared -Wl,-h,$$(@F)'
3246         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3247         network_extralibs="-lsocket -lnsl"
3248         # When using suncc to build, the Solaris linker will mark
3249         # an executable with each instruction set encountered by
3250         # the Solaris assembler.  As our libraries contain their own
3251         # guards for processor-specific code, instead suppress
3252         # generation of the HWCAPS ELF section on Solaris x86 only.
3253         enabled_all suncc x86 &&
3254             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3255             add_ldflags -Wl,-M,mapfile
3256         nm_default='nm -P -g'
3257         ;;
3258     netbsd)
3259         disable symver
3260         oss_indev_extralibs="-lossaudio"
3261         oss_outdev_extralibs="-lossaudio"
3262         ;;
3263     openbsd|bitrig)
3264         disable symver
3265         SHFLAGS='-shared'
3266         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3267         SLIB_INSTALL_LINKS=
3268         oss_indev_extralibs="-lossaudio"
3269         oss_outdev_extralibs="-lossaudio"
3270         ;;
3271     dragonfly)
3272         disable symver
3273         ;;
3274     freebsd)
3275         ;;
3276     bsd/os)
3277         add_extralibs -lpoll -lgnugetopt
3278         ;;
3279     darwin)
3280         gas="gas-preprocessor.pl $cc"
3281         enabled ppc && add_asflags -force_cpusubtype_ALL
3282         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3283         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3284         add_ldflags -Wl,-dynamic,-search_paths_first
3285         SLIBSUF=".dylib"
3286         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3287         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3288         objformat="macho"
3289         enabled x86_64 && objformat="macho64"
3290         enabled_any pic shared ||
3291             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3292         ;;
3293     mingw32*)
3294         if test $target_os = "mingw32ce"; then
3295             disable network
3296         else
3297             target_os=mingw32
3298         fi
3299         LIBTARGET=i386
3300         if enabled x86_64; then
3301             LIBTARGET="i386:x86-64"
3302         elif enabled arm; then
3303             LIBTARGET=arm-wince
3304         fi
3305         check_ldflags -Wl,--nxcompat
3306         check_ldflags -Wl,--dynamicbase
3307         shlibdir_default="$bindir_default"
3308         SLIBPREF=""
3309         SLIBSUF=".dll"
3310         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3311         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3312         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3313         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3314         SLIB_INSTALL_LINKS=
3315         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3316         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3317         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3318         objformat="win32"
3319         dlltool="${cross_prefix}dlltool"
3320         ranlib=:
3321         enable dos_paths
3322         ;;
3323     win32|win64)
3324         disable symver
3325         if enabled shared; then
3326             # Link to the import library instead of the normal static library
3327             # for shared libs.
3328             LD_LIB='%.lib'
3329             # Cannot build both shared and static libs with MSVC or icl.
3330             disable static
3331         fi
3332         shlibdir_default="$bindir_default"
3333         SLIBPREF=""
3334         SLIBSUF=".dll"
3335         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3336         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3337         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3338         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3339         SLIB_INSTALL_LINKS=
3340         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3341         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3342         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3343         objformat="win32"
3344         ranlib=:
3345         enable dos_paths
3346         ;;
3347     cygwin*)
3348         target_os=cygwin
3349         shlibdir_default="$bindir_default"
3350         SLIBPREF="cyg"
3351         SLIBSUF=".dll"
3352         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3353         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3354         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3355         SLIB_INSTALL_LINKS=
3356         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3357         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3358         objformat="win32"
3359         enable dos_paths
3360         ;;
3361     *-dos|freedos|opendos)
3362         network_extralibs="-lsocket"
3363         objformat="coff"
3364         enable dos_paths
3365         add_cppflags -U__STRICT_ANSI__
3366         ;;
3367     linux)
3368         enable dv1394
3369         ;;
3370     irix*)
3371         target_os=irix
3372         ranlib="echo ignoring ranlib"
3373         ;;
3374     os/2*)
3375         ln_s="cp -f"
3376         objformat="aout"
3377         add_cppflags -D_GNU_SOURCE
3378         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3379         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3380         LIBSUF="_s.a"
3381         SLIBPREF=""
3382         SLIBSUF=".dll"
3383         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3384         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3385         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3386             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3387             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3388             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3389             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3390             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3391         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3392             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3393         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3394         enable dos_paths
3395         ;;
3396     gnu/kfreebsd)
3397         add_cppflags -D_BSD_SOURCE
3398         ;;
3399     gnu)
3400         ;;
3401     qnx)
3402         add_cppflags -D_QNX_SOURCE
3403         network_extralibs="-lsocket"
3404         ;;
3405     symbian)
3406         SLIBSUF=".dll"
3407         enable dos_paths
3408         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3409         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3410         add_ldflags -Wl,--target1-abs,--no-undefined \
3411                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3412                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3413         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3414                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3415                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3416         ;;
3417     osf1)
3418         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3419         ;;
3420     minix)
3421         ;;
3422     plan9)
3423         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3424                      -D_REENTRANT_SOURCE        \
3425                      -D_RESEARCH_SOURCE         \
3426                      -DFD_SETSIZE=96            \
3427                      -DHAVE_SOCK_OPTS
3428         add_compat strtod.o strtod=avpriv_strtod
3429         network_extralibs='-lbsd'
3430         exeobjs=compat/plan9/main.o
3431         disable avserver
3432         cp_f='cp'
3433         ;;
3434     none)
3435         ;;
3436     *)
3437         die "Unknown OS '$target_os'."
3438         ;;
3439 esac
3440
3441 # determine libc flavour
3442
3443 probe_libc(){
3444     pfx=$1
3445     pfx_no_=${pfx%_}
3446     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3447     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3448         eval ${pfx}libc_type=uclibc
3449         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3450     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3451         eval ${pfx}libc_type=glibc
3452         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3453     # MinGW headers can be installed on Cygwin, so check for newlib first.
3454     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3455         eval ${pfx}libc_type=newlib
3456         add_${pfx}cppflags -U__STRICT_ANSI__
3457     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3458     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3459         eval ${pfx}libc_type=mingw64
3460         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3461         eval test \$${pfx_no_}cc_type = "gcc" &&
3462             add_${pfx}cppflags -D__printf__=__gnu_printf__
3463     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3464          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3465         eval ${pfx}libc_type=mingw32
3466         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3467             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3468             die "ERROR: MinGW32 runtime version must be >= 3.15."
3469         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3470         eval test \$${pfx_no_}cc_type = "gcc" &&
3471             add_${pfx}cppflags -D__printf__=__gnu_printf__
3472     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3473         eval ${pfx}libc_type=msvcrt
3474         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3475         # 0x601 by default unless something else is set by the user.
3476         # This can easily lead to us detecting functions only present
3477         # in such new versions and producing binaries requiring windows 7.0.
3478         # Therefore explicitly set the default to XP unless the user has
3479         # set something else on the command line.
3480         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3481             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3482     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3483         eval ${pfx}libc_type=klibc
3484     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3485         eval ${pfx}libc_type=bionic
3486     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3487         eval ${pfx}libc_type=solaris
3488         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3489     fi
3490 }
3491
3492 probe_libc
3493 test -n "$libc_type" && enable libc_$libc_type
3494 probe_libc host_
3495 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3496
3497 case $libc_type in
3498     bionic)
3499         add_compat strtod.o strtod=avpriv_strtod
3500         ;;
3501     msvcrt)
3502         add_compat strtod.o strtod=avpriv_strtod
3503         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3504                                      _snprintf=avpriv_snprintf  \
3505                                      vsnprintf=avpriv_vsnprintf
3506         ;;
3507 esac
3508
3509 # hacks for compiler/libc/os combinations
3510
3511 if enabled_all tms470 libc_glibc; then
3512     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3513     add_cppflags -D__USER_LABEL_PREFIX__=
3514     add_cppflags -D__builtin_memset=memset
3515     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3516     add_cflags   -pds=48    # incompatible redefinition of macro
3517 fi
3518
3519 if enabled_all ccc libc_glibc; then
3520     add_ldflags -Wl,-z,now  # calls to libots crash without this
3521 fi
3522
3523 esc(){
3524     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3525 }
3526
3527 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3528
3529 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3530
3531 set_default $PATHS_LIST
3532 set_default nm
3533
3534 # we need to build at least one lib type
3535 if ! enabled_any static shared; then
3536     cat <<EOF
3537 At least one library type must be built.
3538 Specify --enable-static to build the static libraries or --enable-shared to
3539 build the shared libraries as well. To only build the shared libraries specify
3540 --disable-static in addition to --enable-shared.
3541 EOF
3542     exit 1;
3543 fi
3544
3545 die_license_disabled() {
3546     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3547 }
3548
3549 die_license_disabled gpl libcdio
3550 die_license_disabled gpl libx264
3551 die_license_disabled gpl libx265
3552 die_license_disabled gpl libxavs
3553 die_license_disabled gpl libxvid
3554 die_license_disabled gpl x11grab
3555
3556 die_license_disabled nonfree libfaac
3557 die_license_disabled nonfree libfdk_aac
3558 die_license_disabled nonfree openssl
3559
3560 die_license_disabled version3 libopencore_amrnb
3561 die_license_disabled version3 libopencore_amrwb
3562 die_license_disabled version3 libvo_aacenc
3563 die_license_disabled version3 libvo_amrwbenc
3564
3565 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3566
3567 disabled optimizations || check_cflags -fomit-frame-pointer
3568
3569 enable_weak_pic() {
3570     disabled pic && return
3571     enable pic
3572     add_cppflags -DPIC
3573     case "$target_os" in
3574     mingw*|cygwin*)
3575         ;;
3576     *)
3577         add_cflags -fPIC
3578         ;;
3579     esac
3580     add_asflags  -fPIC
3581 }
3582
3583 enabled pic && enable_weak_pic
3584
3585 check_cc <<EOF || die "Symbol mangling check failed."
3586 int ff_extern;
3587 EOF
3588 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3589 extern_prefix=${sym%%ff_extern*}
3590
3591 check_cc <<EOF && enable_weak inline_asm
3592 void foo(void) { __asm__ volatile ("" ::); }
3593 EOF
3594
3595 _restrict=
3596 for restrict_keyword in restrict __restrict__ __restrict; do
3597     check_cc <<EOF && _restrict=$restrict_keyword && break
3598 void foo(char * $restrict_keyword p);
3599 EOF
3600 done
3601
3602 check_cc <<EOF && enable pragma_deprecated
3603 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3604 EOF
3605
3606 check_cc <<EOF && enable attribute_packed
3607 struct { int x; } __attribute__((packed)) x;
3608 EOF
3609
3610 check_cc <<EOF && enable attribute_may_alias
3611 union { int x; } __attribute__((may_alias)) x;
3612 EOF
3613
3614 check_cc <<EOF || die "endian test failed"
3615 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3616 EOF
3617 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3618
3619 check_inline_asm inline_asm_labels '"1:\n"'
3620
3621 if enabled aarch64; then
3622     # internal assembler in clang 3.3 does not support this instruction
3623     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
3624     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
3625
3626     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
3627
3628 elif enabled alpha; then
3629
3630     check_cflags -mieee
3631
3632 elif enabled arm; then
3633
3634     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3635     enabled thumb && check_cflags -mthumb || check_cflags -marm
3636     nogas=die
3637
3638     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3639         enable vfp_args
3640     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3641         case "${cross_prefix:-$cc}" in
3642             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3643             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3644 __asm__ (".eabi_attribute 28, 1");
3645 int main(void) { return 0; }
3646 EOF
3647         esac
3648         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3649     fi
3650
3651     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3652     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3653     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3654     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3655     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3656     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3657
3658     [ $target_os = linux ] ||
3659         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3660             $ARCH_EXT_LIST_ARM
3661
3662     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3663     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3664
3665     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3666
3667 elif enabled mips; then
3668
3669     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3670
3671 elif enabled parisc; then
3672
3673     if enabled gcc; then
3674         case $($cc -dumpversion) in
3675             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3676         esac
3677     fi
3678
3679 elif enabled ppc; then
3680
3681     enable local_aligned_8 local_aligned_16
3682
3683     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3684     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3685     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3686     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3687
3688     # AltiVec flags: The FSF version of GCC differs from the Apple version
3689     if enabled altivec; then
3690         nogas=warn
3691         check_cflags -maltivec -mabi=altivec &&
3692         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3693         check_cflags -faltivec
3694
3695         # check if our compiler supports Motorola AltiVec C API
3696         check_cc <<EOF || disable altivec
3697 $inc_altivec_h
3698 int main(void) {
3699     vector signed int v1 = (vector signed int) { 0 };
3700     vector signed int v2 = (vector signed int) { 1 };
3701     v1 = vec_add(v1, v2);
3702     return 0;
3703 }
3704 EOF
3705
3706         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3707     fi
3708
3709 elif enabled sparc; then
3710
3711     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3712
3713 elif enabled x86; then
3714
3715     check_builtin rdtsc    intrin.h   "__rdtsc()"
3716     check_builtin mm_empty mmintrin.h "_mm_empty()"
3717
3718     enable local_aligned_8 local_aligned_16
3719
3720     # check whether EBP is available on x86
3721     # As 'i' is stored on the stack, this program will crash
3722     # if the base pointer is used to access it because the
3723     # base pointer is cleared in the inline assembly code.
3724     check_exec_crash <<EOF && enable ebp_available
3725 volatile int i=0;
3726 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3727 return i;
3728 EOF
3729
3730     # check whether EBX is available on x86
3731     check_inline_asm ebx_available '""::"b"(0)' &&
3732         check_inline_asm ebx_available '"":::"%ebx"'
3733
3734     # check whether xmm clobbers are supported
3735     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3736
3737     # check whether binutils is new enough to compile SSSE3/MMXEXT
3738     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3739     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3740
3741     if ! disabled_any asm mmx yasm; then
3742         if check_cmd $yasmexe --version; then
3743             enabled x86_64 && yasm_extra="-m amd64"
3744             yasm_debug="-g dwarf2"
3745         elif check_cmd nasm -v; then
3746             yasmexe=nasm
3747             yasm_debug="-g -F dwarf"
3748             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3749         fi
3750
3751         YASMFLAGS="-f $objformat $yasm_extra"
3752         enabled pic               && append YASMFLAGS "-DPIC"
3753         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3754         case "$objformat" in
3755             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3756         esac
3757
3758         check_yasm "movbe ecx, [5]" && enable yasm ||
3759             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
3760         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3761         check_yasm "CPU amdnop" || disable cpunop
3762     fi
3763
3764     case "$cpu" in
3765         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3766             disable fast_clz
3767         ;;
3768     esac
3769
3770 fi
3771
3772 if enabled asm; then
3773     as=${gas:=$as}
3774     check_as <<EOF && enable gnu_as || \
3775         $nogas "GNU assembler not found, install gas-preprocessor"
3776 .macro m n
3777 \n: .int 0
3778 .endm
3779 m x
3780 EOF
3781 fi
3782
3783 check_ldflags -Wl,--as-needed
3784
3785 if check_func dlopen; then
3786     ldl=
3787 elif check_func dlopen -ldl; then
3788     ldl=-ldl
3789 fi
3790
3791 if ! disabled network; then
3792     check_type "sys/types.h sys/socket.h" socklen_t
3793     check_type netdb.h "struct addrinfo"
3794     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3795     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3796     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3797     check_type netinet/in.h "struct sockaddr_in6"
3798     check_type poll.h "struct pollfd"
3799     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3800     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3801     check_type netinet/sctp.h "struct sctp_event_subscribe"
3802     check_func getaddrinfo $network_extralibs
3803     check_func getservbyport $network_extralibs
3804     check_func inet_aton $network_extralibs
3805     # Prefer arpa/inet.h over winsock2
3806     if check_header arpa/inet.h ; then
3807         check_func closesocket
3808     elif check_header winsock2.h ; then
3809         check_func_headers winsock2.h closesocket -lws2 &&
3810             network_extralibs="-lws2" ||
3811         { check_func_headers winsock2.h closesocket -lws2_32 &&
3812             network_extralibs="-lws2_32"; } || disable winsock2_h network
3813         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3814         check_type ws2tcpip.h socklen_t
3815         check_type ws2tcpip.h "struct addrinfo"
3816         check_type ws2tcpip.h "struct group_source_req"
3817         check_type ws2tcpip.h "struct ip_mreq_source"
3818         check_type ws2tcpip.h "struct ipv6_mreq"
3819         check_type winsock2.h "struct pollfd"
3820         check_type ws2tcpip.h "struct sockaddr_in6"
3821         check_type ws2tcpip.h "struct sockaddr_storage"
3822         check_struct winsock2.h "struct sockaddr" sa_len
3823     else
3824         disable network
3825     fi
3826 fi
3827
3828 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3829 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3830
3831 check_func  fcntl
3832 check_func  fork
3833 check_func_headers stdlib.h getenv
3834 check_func  gethrtime
3835 check_func  getopt
3836 check_func  getrusage
3837 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
3838 check_func  gettimeofday
3839 check_func  isatty
3840 check_func  localtime_r
3841 check_func  ${malloc_prefix}memalign            && enable memalign
3842 check_func  mkstemp
3843 check_func  mmap
3844 check_func  mprotect
3845 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3846 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3847 check_func  setrlimit
3848 check_func  strerror_r
3849 check_func  strptime
3850 check_func  strtok_r
3851 check_func  sched_getaffinity
3852 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
3853 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
3854 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
3855 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
3856 check_func  sysconf
3857 check_func  sysctl
3858 check_func  usleep
3859 check_func_headers io.h setmode
3860 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
3861 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
3862 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
3863 check_func_headers windows.h GetProcessAffinityMask
3864 check_func_headers windows.h GetProcessTimes
3865 check_func_headers windows.h GetSystemTimeAsFileTime
3866 check_func_headers windows.h MapViewOfFile
3867 check_func_headers windows.h SetConsoleTextAttribute
3868 check_func_headers windows.h Sleep
3869 check_func_headers windows.h VirtualAlloc
3870
3871 check_header direct.h
3872 check_header dlfcn.h
3873 check_header dxva.h
3874 check_header dxva2api.h
3875 check_header io.h
3876 check_header malloc.h
3877 check_header poll.h
3878 check_header sys/mman.h
3879 check_header sys/param.h
3880 check_header sys/resource.h
3881 check_header sys/select.h
3882 check_header sys/time.h
3883 check_header sys/un.h
3884 check_header unistd.h
3885 check_header vdpau/vdpau.h
3886 check_header vdpau/vdpau_x11.h
3887 check_header VideoDecodeAcceleration/VDADecoder.h
3888 check_header windows.h
3889 check_header X11/extensions/XvMClib.h
3890
3891 if ! disabled w32threads && ! enabled pthreads; then
3892     check_func_headers "windows.h process.h" _beginthreadex &&
3893         enable w32threads || disable w32threads
3894 fi
3895
3896 # check for some common methods of building with pthread support
3897 # do this before the optional library checks as some of them require pthreads
3898 if ! disabled pthreads && ! enabled w32threads; then
3899     enable pthreads
3900     if check_func pthread_join -pthread; then
3901         add_cflags -pthread
3902         add_extralibs -pthread
3903     elif check_func pthread_join -pthreads; then
3904         add_cflags -pthreads
3905         add_extralibs -pthreads
3906     elif check_func pthread_join -lpthreadGC2; then
3907         add_extralibs -lpthreadGC2
3908     elif check_lib pthread.h pthread_join -lpthread; then
3909         :
3910     elif ! check_func pthread_join; then
3911         disable pthreads
3912     fi
3913 fi
3914
3915 for thread in $THREADS_LIST; do
3916     if enabled $thread; then
3917         test -n "$thread_type" &&
3918             die "ERROR: Only one thread type must be selected." ||
3919             thread_type="$thread"
3920     fi
3921 done
3922
3923 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
3924 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
3925
3926 check_lib math.h sin -lm && LIBM="-lm"
3927 enabled vaapi && require vaapi va/va.h vaInitialize -lva
3928
3929 atan2f_args=2
3930 ldexpf_args=2
3931 powf_args=2
3932
3933 for func in $MATH_FUNCS; do
3934     eval check_mathfunc $func \${${func}_args:-1}
3935 done
3936
3937 # these are off by default, so fail if requested and not available
3938 enabled avisynth          && { { check_header "avisynth/avisynth_c.h" && check_lib2 "windows.h" LoadLibrary; } ||
3939                                { check_header "avxsynth/avxsynth_c.h" && check_lib2 "dlfcn.h" dlopen -ldl; } ||
3940                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
3941 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
3942 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
3943 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
3944 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
3945 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
3946 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
3947                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
3948                                done || die "ERROR: libgsm not found"; }
3949 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
3950 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
3951 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
3952 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
3953 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
3954 enabled libopenjpeg       && require libopenjpeg openjpeg.h opj_version -lopenjpeg
3955 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
3956 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
3957 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
3958 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
3959 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
3960 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
3961 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
3962 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
3963 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
3964 enabled libvpx            && {
3965     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
3966                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
3967     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
3968                                     die "ERROR: libvpx encoder version must be >=0.9.6"; }
3969     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
3970     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
3971 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
3972 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
3973 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
3974                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
3975                                die "ERROR: libx264 version must be >= 0.118."; }
3976 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
3977                              { check_cpp_condition x265.h "X265_BUILD >= 5" ||
3978                                die "ERROR: libx265 version must be >= 5."; }
3979 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
3980 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
3981 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
3982                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
3983                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
3984                                die "ERROR: openssl not found"; }
3985
3986 if enabled gnutls; then
3987     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
3988     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
3989 fi
3990
3991 # libdc1394 check
3992 if enabled libdc1394; then
3993     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
3994         enable libdc1394_2; } ||
3995     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
3996         enable libdc1394_1; } ||
3997     die "ERROR: No version of libdc1394 found "
3998 fi
3999
4000 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4001     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4002     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4003     enable sdl
4004 fi
4005
4006 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4007 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
4008
4009 check_header linux/fb.h
4010 check_header linux/videodev2.h
4011 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4012
4013 check_header sys/videoio.h
4014
4015 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4016 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4017 # w32api 3.12 had it defined wrong
4018 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4019
4020 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4021 { check_header dev/bktr/ioctl_meteor.h &&