dsputil: Make dsputil selectable
[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   --libdir=DIR             install libs in DIR [PREFIX/lib]
85   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
86   --incdir=DIR             install includes in DIR [PREFIX/include]
87   --mandir=DIR             install man page in DIR [PREFIX/share/man]
88
89 Licensing options:
90   --enable-gpl             allow use of GPL code, the resulting libs
91                            and binaries will be under GPL [no]
92   --enable-version3        upgrade (L)GPL to version 3 [no]
93   --enable-nonfree         allow use of nonfree code, the resulting libs
94                            and binaries will be unredistributable [no]
95
96 Configuration options:
97   --disable-static         do not build static libraries [no]
98   --enable-shared          build shared libraries [no]
99   --enable-small           optimize for size instead of speed
100   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
101   --enable-gray            enable full grayscale support (slower color)
102   --disable-swscale-alpha  disable alpha channel support in swscale
103   --disable-all            disable building components, libraries and programs
104
105 Program options:
106   --disable-programs       do not build command line programs
107   --disable-avconv         disable avconv build
108   --disable-avplay         disable avplay build
109   --disable-avprobe        disable avprobe build
110   --disable-avserver       disable avserver build
111
112 Component options:
113   --disable-doc            do not build documentation
114   --disable-avdevice       disable libavdevice build
115   --disable-avcodec        disable libavcodec build
116   --disable-avformat       disable libavformat build
117   --disable-avutil         disable libavutil build
118   --disable-swscale        disable libswscale build
119   --disable-avfilter       disable video filter support [no]
120   --disable-avresample     disable libavresample build [no]
121   --disable-pthreads       disable pthreads [auto]
122   --disable-w32threads     disable Win32 threads [auto]
123   --disable-network        disable network support [no]
124   --disable-dct            disable DCT code
125   --disable-error-resilience disable error resilience code
126   --disable-lsp            disable LSP code
127   --disable-lzo            disable LZO decoder code
128   --disable-mdct           disable MDCT code
129   --disable-rdft           disable RDFT code
130   --disable-fft            disable FFT code
131
132 Hardware accelerators:
133   --enable-dxva2           enable DXVA2 code
134   --enable-vaapi           enable VAAPI code
135   --enable-vda             enable VDA code
136   --enable-vdpau           enable VDPAU code
137
138 Individual component options:
139   --disable-everything     disable all components listed below
140   --disable-encoder=NAME   disable encoder NAME
141   --enable-encoder=NAME    enable encoder NAME
142   --disable-encoders       disable all encoders
143   --disable-decoder=NAME   disable decoder NAME
144   --enable-decoder=NAME    enable decoder NAME
145   --disable-decoders       disable all decoders
146   --disable-hwaccel=NAME   disable hwaccel NAME
147   --enable-hwaccel=NAME    enable hwaccel NAME
148   --disable-hwaccels       disable all hwaccels
149   --disable-muxer=NAME     disable muxer NAME
150   --enable-muxer=NAME      enable muxer NAME
151   --disable-muxers         disable all muxers
152   --disable-demuxer=NAME   disable demuxer NAME
153   --enable-demuxer=NAME    enable demuxer NAME
154   --disable-demuxers       disable all demuxers
155   --enable-parser=NAME     enable parser NAME
156   --disable-parser=NAME    disable parser NAME
157   --disable-parsers        disable all parsers
158   --enable-bsf=NAME        enable bitstream filter NAME
159   --disable-bsf=NAME       disable bitstream filter NAME
160   --disable-bsfs           disable all bitstream filters
161   --enable-protocol=NAME   enable protocol NAME
162   --disable-protocol=NAME  disable protocol NAME
163   --disable-protocols      disable all protocols
164   --enable-indev=NAME      enable input device NAME
165   --disable-indev=NAME     disable input device NAME
166   --disable-indevs         disable input devices
167   --enable-outdev=NAME     enable output device NAME
168   --disable-outdev=NAME    disable output device NAME
169   --disable-outdevs        disable output devices
170   --disable-devices        disable all devices
171   --enable-filter=NAME     enable filter NAME
172   --disable-filter=NAME    disable filter NAME
173   --disable-filters        disable all filters
174
175 External library support:
176   --enable-avisynth        enable reading of AVISynth script files [no]
177   --enable-bzlib           enable bzlib [autodetect]
178   --enable-frei0r          enable frei0r video filtering
179   --enable-gnutls          enable gnutls [no]
180   --enable-libcdio         enable audio CD grabbing with libcdio
181   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
182                            and libraw1394 [no]
183   --enable-libfaac         enable AAC encoding via libfaac [no]
184   --enable-libfdk-aac      enable AAC encoding via libfdk-aac [no]
185   --enable-libfreetype     enable libfreetype [no]
186   --enable-libgsm          enable GSM de/encoding via libgsm [no]
187   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
188   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
189   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
190   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
191   --enable-libopencv       enable video filtering via libopencv [no]
192   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
193   --enable-libopus         enable Opus decoding via libopus [no]
194   --enable-libpulse        enable Pulseaudio input via libpulse [no]
195   --enable-librtmp         enable RTMP[E] support via librtmp [no]
196   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
197   --enable-libspeex        enable Speex de/encoding via libspeex [no]
198   --enable-libtheora       enable Theora encoding via libtheora [no]
199   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
200   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
201   --enable-libvorbis       enable Vorbis encoding via libvorbis [no]
202   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
203   --enable-libx264         enable H.264 encoding via x264 [no]
204   --enable-libxavs         enable AVS encoding via xavs [no]
205   --enable-libxvid         enable Xvid encoding via xvidcore,
206                            native MPEG-4/Xvid encoder exists [no]
207   --enable-openssl         enable openssl [no]
208   --enable-x11grab         enable X11 grabbing [no]
209   --enable-zlib            enable zlib [autodetect]
210
211 Advanced options (experts only):
212   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
213   --enable-cross-compile   assume a cross-compiler is used
214   --sysroot=PATH           root of cross-build tree
215   --sysinclude=PATH        location of cross-build system headers
216   --target-os=OS           compiler targets OS [$target_os]
217   --target-exec=CMD        command to run executables on target
218   --target-path=DIR        path to view of build directory on target
219   --toolchain=NAME         set tool defaults according to NAME
220   --nm=NM                  use nm tool
221   --ar=AR                  use archive tool AR [$ar_default]
222   --as=AS                  use assembler AS [$as_default]
223   --cc=CC                  use C compiler CC [$cc_default]
224   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
225   --ld=LD                  use linker LD
226   --host-cc=HOSTCC         use host C compiler HOSTCC
227   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
228   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
229   --host-ld=HOSTLD         use host linker HOSTLD
230   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
231   --host-libs=HLIBS        use libs HLIBS when linking for host
232   --host-os=OS             compiler host OS [$target_os]
233   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
234   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
235   --extra-libs=ELIBS       add ELIBS [$ELIBS]
236   --extra-version=STRING   version string suffix []
237   --optflags=OPTFLAGS      override optimization-related compiler flags
238   --build-suffix=SUFFIX    library name suffix []
239   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
240   --arch=ARCH              select architecture [$arch]
241   --cpu=CPU                select the minimum required CPU (affects
242                            instruction selection, may crash on older CPUs)
243   --enable-pic             build position-independent code
244   --enable-sram            allow use of on-chip SRAM
245   --enable-thumb           compile for Thumb instruction set
246   --disable-symver         disable symbol versioning
247   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
248   --disable-safe-bitstream-reader
249                            disable buffer boundary checking in bitreaders
250                            (faster, but may crash)
251   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
252   --enable-lto             use link-time optimization
253
254 Optimization options (experts only):
255   --disable-asm            disable all assembler optimizations
256   --disable-altivec        disable AltiVec optimizations
257   --disable-amd3dnow       disable 3DNow! optimizations
258   --disable-amd3dnowext    disable 3DNow! extended optimizations
259   --disable-mmx            disable MMX optimizations
260   --disable-mmxext         disable MMXEXT optimizations
261   --disable-sse            disable SSE optimizations
262   --disable-sse2           disable SSE2 optimizations
263   --disable-sse3           disable SSE3 optimizations
264   --disable-ssse3          disable SSSE3 optimizations
265   --disable-sse4           disable SSE4 optimizations
266   --disable-sse42          disable SSE4.2 optimizations
267   --disable-avx            disable AVX optimizations
268   --disable-fma4           disable FMA4 optimizations
269   --disable-armv5te        disable armv5te optimizations
270   --disable-armv6          disable armv6 optimizations
271   --disable-armv6t2        disable armv6t2 optimizations
272   --disable-vfp            disable VFP optimizations
273   --disable-neon           disable NEON optimizations
274   --disable-vis            disable VIS optimizations
275   --disable-inline-asm     disable use of inline assembler
276   --disable-yasm           disable use of yasm assembler
277
278 Developer options (useful when working on Libav itself):
279   --disable-debug          disable debugging symbols
280   --enable-debug=LEVEL     set the debug level [$debuglevel]
281   --disable-optimizations  disable compiler optimizations
282   --enable-extra-warnings  enable more compiler warnings
283   --samples=PATH           location of test samples for FATE, if not set use
284                            \$LIBAV_SAMPLES at make invocation time.
285   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
286                            should be used only for debugging purposes)
287   --enable-random          randomly enable/disable components
288   --disable-random
289   --enable-random=LIST     randomly enable/disable specific components or
290   --disable-random=LIST    component groups. LIST is a comma-separated list
291                            of NAME[:PROB] entries where NAME is a component
292                            (group) and PROB the probability associated with
293                            NAME (default 0.5).
294   --random-seed=VALUE      seed value for --enable/disable-random
295
296 NOTE: Object files are built at the place where configure is launched.
297 EOF
298   exit 0
299 }
300
301 quotes='""'
302
303 log(){
304     echo "$@" >> $logfile
305 }
306
307 log_file(){
308     log BEGIN $1
309     pr -n -t $1 >> $logfile
310     log END $1
311 }
312
313 echolog(){
314     log "$@"
315     echo "$@"
316 }
317
318 warn(){
319     log "WARNING: $*"
320     WARNINGS="${WARNINGS}WARNING: $*\n"
321 }
322
323 die(){
324     echolog "$@"
325     cat <<EOF
326
327 If you think configure made a mistake, make sure you are using the latest
328 version from Git.  If the latest version fails, report the problem to the
329 libav-user@libav.org mailing list or IRC #libav on irc.freenode.net.
330 EOF
331     if disabled logging; then
332         cat <<EOF
333 Rerun configure with logging enabled (do not use --disable-logging), and
334 include the log this produces with your report.
335 EOF
336     else
337         cat <<EOF
338 Include the log file "$logfile" produced by configure as this will help
339 solving the problem.
340 EOF
341     fi
342     exit 1
343 }
344
345 # Avoid locale weirdness, besides we really just want to translate ASCII.
346 toupper(){
347     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
348 }
349
350 tolower(){
351     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
352 }
353
354 c_escape(){
355     echo "$*" | sed 's/["\\]/\\\0/g'
356 }
357
358 sh_quote(){
359     v=$(echo "$1" | sed "s/'/'\\\\''/g")
360     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
361     echo "$v"
362 }
363
364 cleanws(){
365     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
366 }
367
368 filter(){
369     pat=$1
370     shift
371     for v; do
372         eval "case $v in $pat) echo $v ;; esac"
373     done
374 }
375
376 filter_out(){
377     pat=$1
378     shift
379     for v; do
380         eval "case $v in $pat) ;; *) echo $v ;; esac"
381     done
382 }
383
384 map(){
385     m=$1
386     shift
387     for v; do eval $m; done
388 }
389
390 add_suffix(){
391     suffix=$1
392     shift
393     for v; do echo ${v}${suffix}; done
394 }
395
396 set_all(){
397     value=$1
398     shift
399     for var in $*; do
400         eval $var=$value
401     done
402 }
403
404 set_weak(){
405     value=$1
406     shift
407     for var; do
408         eval : \${$var:=$value}
409     done
410 }
411
412 sanitize_var_name(){
413     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
414 }
415
416 set_safe(){
417     var=$1
418     shift
419     eval $(sanitize_var_name "$var")='$*'
420 }
421
422 get_safe(){
423     eval echo \$$(sanitize_var_name "$1")
424 }
425
426 pushvar(){
427     for var in $*; do
428         eval level=\${${var}_level:=0}
429         eval ${var}_${level}="\$$var"
430         eval ${var}_level=$(($level+1))
431     done
432 }
433
434 popvar(){
435     for var in $*; do
436         eval level=\${${var}_level:-0}
437         test $level = 0 && continue
438         eval level=$(($level-1))
439         eval $var="\${${var}_${level}}"
440         eval ${var}_level=$level
441         eval unset ${var}_${level}
442     done
443 }
444
445 enable(){
446     set_all yes $*
447 }
448
449 disable(){
450     set_all no $*
451 }
452
453 enable_weak(){
454     set_weak yes $*
455 }
456
457 disable_weak(){
458     set_weak no $*
459 }
460
461 enable_safe(){
462     for var; do
463         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
464     done
465 }
466
467 disable_safe(){
468     for var; do
469         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
470     done
471 }
472
473 do_enable_deep(){
474     for var; do
475         enabled $var && continue
476         eval sel="\$${var}_select"
477         eval sgs="\$${var}_suggest"
478         pushvar var sgs
479         enable_deep $sel
480         popvar sgs
481         enable_deep_weak $sgs
482         popvar var
483     done
484 }
485
486 enable_deep(){
487     do_enable_deep $*
488     enable $*
489 }
490
491 enable_deep_weak(){
492     do_enable_deep $*
493     enable_weak $*
494 }
495
496 enabled(){
497     test "${1#!}" = "$1" && op== || op=!=
498     eval test "x\$${1#!}" $op "xyes"
499 }
500
501 disabled(){
502     test "${1#!}" = "$1" && op== || op=!=
503     eval test "x\$${1#!}" $op "xno"
504 }
505
506 enabled_all(){
507     for opt; do
508         enabled $opt || return 1
509     done
510 }
511
512 disabled_all(){
513     for opt; do
514         disabled $opt || return 1
515     done
516 }
517
518 enabled_any(){
519     for opt; do
520         enabled $opt && return 0
521     done
522 }
523
524 disabled_any(){
525     for opt; do
526         disabled $opt && return 0
527     done
528     return 1
529 }
530
531 set_default(){
532     for opt; do
533         eval : \${$opt:=\$${opt}_default}
534     done
535 }
536
537 is_in(){
538     value=$1
539     shift
540     for var in $*; do
541         [ $var = $value ] && return 0
542     done
543     return 1
544 }
545
546 do_check_deps(){
547     for cfg; do
548         cfg="${cfg#!}"
549         enabled ${cfg}_checking && die "Circular dependency for $cfg."
550         disabled ${cfg}_checking && continue
551         enable ${cfg}_checking
552         append allopts $cfg
553
554         eval dep_all="\$${cfg}_deps"
555         eval dep_any="\$${cfg}_deps_any"
556         eval dep_sel="\$${cfg}_select"
557         eval dep_sgs="\$${cfg}_suggest"
558         eval dep_ifa="\$${cfg}_if"
559         eval dep_ifn="\$${cfg}_if_any"
560
561         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
562         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
563         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
564
565         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
566         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
567         enabled_all  $dep_all || disable $cfg
568         enabled_any  $dep_any || disable $cfg
569         disabled_any $dep_sel && disable $cfg
570
571         if enabled $cfg; then
572             enable_deep $dep_sel
573             enable_deep_weak $dep_sgs
574         fi
575
576         disable ${cfg}_checking
577     done
578 }
579
580 check_deps(){
581     unset allopts
582
583     do_check_deps "$@"
584
585     for cfg in $allopts; do
586         enabled $cfg || continue
587         eval dep_extralibs="\$${cfg}_extralibs"
588         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
589     done
590 }
591
592 print_config(){
593     pfx=$1
594     files=$2
595     shift 2
596     map 'eval echo "$v \${$v:-no}"' "$@" |
597     awk "BEGIN { split(\"$files\", files) }
598         {
599             c = \"$pfx\" toupper(\$1);
600             v = \$2;
601             sub(/yes/, 1, v);
602             sub(/no/,  0, v);
603             for (f in files) {
604                 file = files[f];
605                 if (file ~ /\\.h\$/) {
606                     printf(\"#define %s %d\\n\", c, v) >>file;
607                 } else if (file ~ /\\.asm\$/) {
608                     printf(\"%%define %s %d\\n\", c, v) >>file;
609                 } else if (file ~ /\\.mak\$/) {
610                     n = -v ? \"\" : \"!\";
611                     printf(\"%s%s=yes\\n\", n, c) >>file;
612                 }
613             }
614         }"
615 }
616
617 print_enabled(){
618     suf=$1
619     shift
620     for v; do
621         enabled $v && printf "%s\n" ${v%$suf};
622     done
623 }
624
625 append(){
626     var=$1
627     shift
628     eval "$var=\"\$$var $*\""
629 }
630
631 prepend(){
632     var=$1
633     shift
634     eval "$var=\"$* \$$var\""
635 }
636
637 add_cppflags(){
638     append CPPFLAGS "$@"
639 }
640
641 add_cflags(){
642     append CFLAGS $($cflags_filter "$@")
643 }
644
645 add_asflags(){
646     append ASFLAGS $($asflags_filter "$@")
647 }
648
649 add_ldflags(){
650     append LDFLAGS $($ldflags_filter "$@")
651 }
652
653 add_extralibs(){
654     prepend extralibs $($ldflags_filter "$@")
655 }
656
657 add_host_cppflags(){
658     append host_cppflags "$@"
659 }
660
661 add_host_cflags(){
662     append host_cflags $($host_cflags_filter "$@")
663 }
664
665 add_host_ldflags(){
666     append host_ldflags $($host_ldflags_filter "$@")
667 }
668
669 add_compat(){
670     append compat_objs $1
671     shift
672     map 'add_cppflags -D$v' "$@"
673 }
674
675 check_cmd(){
676     log "$@"
677     "$@" >> $logfile 2>&1
678 }
679
680 cc_o(){
681     eval printf '%s\\n' $CC_O
682 }
683
684 cc_e(){
685     eval printf '%s\\n' $CC_E
686 }
687
688 check_cc(){
689     log check_cc "$@"
690     cat > $TMPC
691     log_file $TMPC
692     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
693 }
694
695 check_cpp(){
696     log check_cpp "$@"
697     cat > $TMPC
698     log_file $TMPC
699     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
700 }
701
702 as_o(){
703     eval printf '%s\\n' $AS_O
704 }
705
706 check_as(){
707     log check_as "$@"
708     cat > $TMPS
709     log_file $TMPS
710     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
711 }
712
713 check_inline_asm(){
714     log check_inline_asm "$@"
715     name="$1"
716     code="$2"
717     shift 2
718     disable $name
719     check_cc "$@" <<EOF && enable $name
720 void foo(void){ __asm__ volatile($code); }
721 EOF
722 }
723
724 check_insn(){
725     log check_insn "$@"
726     check_inline_asm ${1}_inline "\"$2\""
727     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
728 }
729
730 check_yasm(){
731     log check_yasm "$@"
732     echo "$1" > $TMPS
733     log_file $TMPS
734     shift 1
735     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
736 }
737
738 ld_o(){
739     eval printf '%s\\n' $LD_O
740 }
741
742 check_ld(){
743     log check_ld "$@"
744     flags=$(filter_out '-l*' "$@")
745     libs=$(filter '-l*' "$@")
746     check_cc $($cflags_filter $flags) || return
747     flags=$($ldflags_filter $flags)
748     libs=$($ldflags_filter $libs)
749     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
750 }
751
752 check_code(){
753     log check_code "$@"
754     check=$1
755     headers=$2
756     code=$3
757     shift 3
758     {
759         for hdr in $headers; do
760             echo "#include <$hdr>"
761         done
762         echo "int main(void) { $code; return 0; }"
763     } | check_$check "$@"
764 }
765
766 check_cppflags(){
767     log check_cppflags "$@"
768     check_cc "$@" <<EOF && append CPPFLAGS "$@"
769 int x;
770 EOF
771 }
772
773 check_cflags(){
774     log check_cflags "$@"
775     set -- $($cflags_filter "$@")
776     check_cc "$@" <<EOF && append CFLAGS "$@"
777 int x;
778 EOF
779 }
780
781 test_ldflags(){
782     log test_ldflags "$@"
783     check_ld "$@" <<EOF
784 int main(void){ return 0; }
785 EOF
786 }
787
788 check_ldflags(){
789     log check_ldflags "$@"
790     test_ldflags "$@" && add_ldflags "$@"
791 }
792
793 check_header(){
794     log check_header "$@"
795     header=$1
796     shift
797     disable_safe $header
798     check_cpp "$@" <<EOF && enable_safe $header
799 #include <$header>
800 int x;
801 EOF
802 }
803
804 check_func(){
805     log check_func "$@"
806     func=$1
807     shift
808     disable $func
809     check_ld "$@" <<EOF && enable $func
810 extern int $func();
811 int main(void){ $func(); }
812 EOF
813 }
814
815 check_mathfunc(){
816     log check_mathfunc "$@"
817     func=$1
818     narg=$2
819     shift 2
820     test $narg = 2 && args="f, g" || args="f"
821     disable $func
822     check_ld "$@" <<EOF && enable $func
823 #include <math.h>
824 float foo(float f, float g) { return $func($args); }
825 int main(void){ return 0; }
826 EOF
827 }
828
829 check_func_headers(){
830     log check_func_headers "$@"
831     headers=$1
832     funcs=$2
833     shift 2
834     {
835         for hdr in $headers; do
836             echo "#include <$hdr>"
837         done
838         for func in $funcs; do
839             echo "long check_$func(void) { return (long) $func; }"
840         done
841         echo "int main(void) { return 0; }"
842     } | check_ld "$@" && enable $funcs && enable_safe $headers
843 }
844
845 check_cpp_condition(){
846     log check_cpp_condition "$@"
847     header=$1
848     condition=$2
849     shift 2
850     check_cpp "$@" <<EOF
851 #include <$header>
852 #if !($condition)
853 #error "unsatisfied condition: $condition"
854 #endif
855 EOF
856 }
857
858 check_lib(){
859     log check_lib "$@"
860     header="$1"
861     func="$2"
862     shift 2
863     check_header $header && check_func $func "$@" && add_extralibs "$@"
864 }
865
866 check_lib2(){
867     log check_lib2 "$@"
868     headers="$1"
869     funcs="$2"
870     shift 2
871     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
872 }
873
874 check_pkg_config(){
875     log check_pkg_config "$@"
876     pkg="$1"
877     headers="$2"
878     funcs="$3"
879     shift 3
880     $pkg_config --exists $pkg || return
881     pkg_cflags=$($pkg_config --cflags $pkg)
882     pkg_libs=$($pkg_config --libs $pkg)
883     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
884         set_safe ${pkg}_cflags $pkg_cflags   &&
885         set_safe ${pkg}_libs   $pkg_libs
886 }
887
888 check_exec(){
889     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
890 }
891
892 check_exec_crash(){
893     code=$(cat)
894
895     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
896     # are safe but may not be available everywhere.  Thus we use
897     # raise(SIGTERM) instead.  The check is run in a subshell so we
898     # can redirect the "Terminated" message from the shell.  SIGBUS
899     # is not defined by standard C so it is used conditionally.
900
901     (check_exec "$@") >> $logfile 2>&1 <<EOF
902 #include <signal.h>
903 static void sighandler(int sig){
904     raise(SIGTERM);
905 }
906 int foo(void){
907     $code
908 }
909 int main(void){
910     signal(SIGILL, sighandler);
911     signal(SIGFPE, sighandler);
912     signal(SIGSEGV, sighandler);
913 #ifdef SIGBUS
914     signal(SIGBUS, sighandler);
915 #endif
916     foo();
917 }
918 EOF
919 }
920
921 check_type(){
922     log check_type "$@"
923     headers=$1
924     type=$2
925     shift 2
926     disable_safe "$type"
927     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
928 }
929
930 check_struct(){
931     log check_struct "$@"
932     headers=$1
933     struct=$2
934     member=$3
935     shift 3
936     disable_safe "${struct}_${member}"
937     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
938         enable_safe "${struct}_${member}"
939 }
940
941 check_builtin(){
942     log check_builtin "$@"
943     name=$1
944     headers=$2
945     builtin=$3
946     shift 3
947     disable "$name"
948     check_code ld "$headers" "$builtin" "$@" && enable "$name"
949 }
950
951 require(){
952     name="$1"
953     header="$2"
954     func="$3"
955     shift 3
956     check_lib $header $func "$@" || die "ERROR: $name not found"
957 }
958
959 require2(){
960     name="$1"
961     headers="$2"
962     func="$3"
963     shift 3
964     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
965 }
966
967 require_pkg_config(){
968     pkg="$1"
969     check_pkg_config "$@" || die "ERROR: $pkg not found"
970     add_cflags    $(get_safe ${pkg}_cflags)
971     add_extralibs $(get_safe ${pkg}_libs)
972 }
973
974 hostcc_o(){
975     eval printf '%s\\n' $HOSTCC_O
976 }
977
978 check_host_cc(){
979     log check_host_cc "$@"
980     cat > $TMPC
981     log_file $TMPC
982     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
983 }
984
985 check_host_cppflags(){
986     log check_host_cppflags "$@"
987     check_host_cc "$@" <<EOF && append host_cppflags "$@"
988 int x;
989 EOF
990 }
991
992 check_host_cflags(){
993     log check_host_cflags "$@"
994     set -- $($host_cflags_filter "$@")
995     check_host_cc "$@" <<EOF && append host_cflags "$@"
996 int x;
997 EOF
998 }
999
1000 apply(){
1001     file=$1
1002     shift
1003     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1004 }
1005
1006 cp_if_changed(){
1007     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1008     mkdir -p "$(dirname $2)"
1009     $cp_f "$1" "$2"
1010 }
1011
1012 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1013 # system-dependent things.
1014
1015 COMPONENT_LIST="
1016     bsfs
1017     decoders
1018     demuxers
1019     encoders
1020     filters
1021     hwaccels
1022     indevs
1023     muxers
1024     outdevs
1025     parsers
1026     protocols
1027 "
1028
1029 EXTERNAL_LIBRARY_LIST="
1030     avisynth
1031     bzlib
1032     frei0r
1033     gnutls
1034     libcdio
1035     libdc1394
1036     libfaac
1037     libfdk_aac
1038     libfreetype
1039     libgsm
1040     libilbc
1041     libmp3lame
1042     libopencore_amrnb
1043     libopencore_amrwb
1044     libopencv
1045     libopenjpeg
1046     libopus
1047     libpulse
1048     librtmp
1049     libschroedinger
1050     libspeex
1051     libtheora
1052     libvo_aacenc
1053     libvo_amrwbenc
1054     libvorbis
1055     libvpx
1056     libx264
1057     libxavs
1058     libxvid
1059     openssl
1060     x11grab
1061     zlib
1062 "
1063
1064 HWACCEL_LIST="
1065     dxva2
1066     vaapi
1067     vda
1068     vdpau
1069 "
1070 LIBRARY_LIST="
1071     avcodec
1072     avdevice
1073     avfilter
1074     avformat
1075     avresample
1076     avutil
1077     swscale
1078 "
1079
1080 PROGRAM_LIST="
1081     avconv
1082     avplay
1083     avprobe
1084     avserver
1085 "
1086
1087 CONFIG_LIST="
1088     $COMPONENT_LIST
1089     $EXTERNAL_LIBRARY_LIST
1090     $HWACCEL_LIST
1091     $LIBRARY_LIST
1092     $PROGRAM_LIST
1093     dct
1094     doc
1095     error_resilience
1096     fft
1097     gpl
1098     gray
1099     hardcoded_tables
1100     lsp
1101     lzo
1102     mdct
1103     memalign_hack
1104     network
1105     nonfree
1106     pic
1107     rdft
1108     runtime_cpudetect
1109     safe_bitstream_reader
1110     shared
1111     small
1112     sram
1113     static
1114     swscale_alpha
1115     thumb
1116     version3
1117     xmm_clobber_test
1118 "
1119
1120 THREADS_LIST='
1121     pthreads
1122     w32threads
1123 '
1124
1125 ATOMICS_LIST='
1126     atomics_gcc
1127     atomics_win32
1128     atomics_suncc
1129 '
1130
1131 ARCH_LIST='
1132     aarch64
1133     alpha
1134     arm
1135     avr32
1136     avr32_ap
1137     avr32_uc
1138     bfin
1139     ia64
1140     m68k
1141     mips
1142     mips64
1143     parisc
1144     ppc
1145     ppc64
1146     s390
1147     sh4
1148     sparc
1149     sparc64
1150     tilegx
1151     tilepro
1152     tomi
1153     x86
1154     x86_32
1155     x86_64
1156 '
1157
1158 ARCH_EXT_LIST_ARM='
1159     armv5te
1160     armv6
1161     armv6t2
1162     neon
1163     vfp
1164     vfpv3
1165 '
1166
1167 ARCH_EXT_LIST_X86='
1168     amd3dnow
1169     amd3dnowext
1170     avx
1171     fma4
1172     mmx
1173     mmxext
1174     sse
1175     sse2
1176     sse3
1177     sse4
1178     sse42
1179     ssse3
1180 '
1181
1182 ARCH_EXT_LIST="
1183     $ARCH_EXT_LIST_ARM
1184     $ARCH_EXT_LIST_X86
1185     altivec
1186     ppc4xx
1187     vis
1188 "
1189
1190 HAVE_LIST_CMDLINE='
1191     inline_asm
1192     symver
1193     yasm
1194 '
1195
1196 HAVE_LIST_PUB='
1197     bigendian
1198     fast_unaligned
1199 '
1200
1201 MATH_FUNCS="
1202     atanf
1203     atan2f
1204     cbrtf
1205     cosf
1206     exp2
1207     exp2f
1208     expf
1209     isinf
1210     isnan
1211     ldexpf
1212     llrint
1213     llrintf
1214     log2
1215     log2f
1216     log10f
1217     lrint
1218     lrintf
1219     powf
1220     rint
1221     round
1222     roundf
1223     sinf
1224     trunc
1225     truncf
1226 "
1227
1228 HAVE_LIST="
1229     $ARCH_EXT_LIST
1230     $(add_suffix _external $ARCH_EXT_LIST)
1231     $(add_suffix _inline   $ARCH_EXT_LIST)
1232     $HAVE_LIST_CMDLINE
1233     $HAVE_LIST_PUB
1234     $THREADS_LIST
1235     $ATOMICS_LIST
1236     $MATH_FUNCS
1237     aligned_malloc
1238     aligned_stack
1239     alsa_asoundlib_h
1240     altivec_h
1241     arpa_inet_h
1242     asm_mod_q
1243     asm_mod_y
1244     atomic_cas_ptr
1245     atomics_native
1246     attribute_may_alias
1247     attribute_packed
1248     cdio_paranoia_h
1249     cdio_paranoia_paranoia_h
1250     closesocket
1251     cmov
1252     CommandLineToArgvW
1253     cpunop
1254     CryptGenRandom
1255     dcbzl
1256     dev_bktr_ioctl_bt848_h
1257     dev_bktr_ioctl_meteor_h
1258     dev_ic_bt8xx_h
1259     dev_video_bktr_ioctl_bt848_h
1260     dev_video_meteor_ioctl_meteor_h
1261     direct_h
1262     dlfcn_h
1263     dlopen
1264     dos_paths
1265     dxva_h
1266     ebp_available
1267     ebx_available
1268     fast_64bit
1269     fast_clz
1270     fast_cmov
1271     fcntl
1272     fork
1273     getaddrinfo
1274     gethrtime
1275     getopt
1276     GetProcessAffinityMask
1277     GetProcessMemoryInfo
1278     GetProcessTimes
1279     GetSystemTimeAsFileTime
1280     getrusage
1281     getservbyport
1282     gettimeofday
1283     gnu_as
1284     gsm_h
1285     ibm_asm
1286     inet_aton
1287     io_h
1288     isatty
1289     jack_port_get_latency_range
1290     ldbrx
1291     libdc1394_1
1292     libdc1394_2
1293     local_aligned_16
1294     local_aligned_8
1295     localtime_r
1296     loongson
1297     machine_ioctl_bt848_h
1298     machine_ioctl_meteor_h
1299     machine_rw_barrier
1300     malloc_h
1301     MapViewOfFile
1302     memalign
1303     MemoryBarrier
1304     mkstemp
1305     mm_empty
1306     mmap
1307     mprotect
1308     msvcrt
1309     nanosleep
1310     poll_h
1311     posix_memalign
1312     rdtsc
1313     sched_getaffinity
1314     sdl
1315     SetConsoleTextAttribute
1316     setmode
1317     setrlimit
1318     Sleep
1319     sndio_h
1320     socklen_t
1321     soundcard_h
1322     strerror_r
1323     strptime
1324     strtok_r
1325     struct_addrinfo
1326     struct_group_source_req
1327     struct_ip_mreq_source
1328     struct_ipv6_mreq
1329     struct_pollfd
1330     struct_rusage_ru_maxrss
1331     struct_sockaddr_in6
1332     struct_sockaddr_sa_len
1333     struct_sockaddr_storage
1334     struct_v4l2_frmivalenum_discrete
1335     symver_asm_label
1336     symver_gnu_asm
1337     sync_val_compare_and_swap
1338     sysconf
1339     sysctl
1340     sys_mman_h
1341     sys_param_h
1342     sys_resource_h
1343     sys_select_h
1344     sys_soundcard_h
1345     sys_time_h
1346     sys_videoio_h
1347     threads
1348     unistd_h
1349     usleep
1350     vfp_args
1351     VirtualAlloc
1352     windows_h
1353     winsock2_h
1354     xform_asm
1355     xmm_clobbers
1356 "
1357
1358 # options emitted with CONFIG_ prefix but not available on the command line
1359 CONFIG_EXTRA="
1360     aandcttables
1361     ac3dsp
1362     audio_frame_queue
1363     dsputil
1364     gcrypt
1365     golomb
1366     gplv3
1367     h264chroma
1368     h264dsp
1369     h264pred
1370     h264qpel
1371     huffman
1372     lgplv3
1373     lpc
1374     mpegaudio
1375     mpegaudiodsp
1376     mpegvideo
1377     mpegvideoenc
1378     nettle
1379     rangecoder
1380     rtpdec
1381     rtpenc_chain
1382     sinewin
1383     videodsp
1384     vp3dsp
1385 "
1386
1387 CMDLINE_SELECT="
1388     $ARCH_EXT_LIST
1389     $CONFIG_LIST
1390     $HAVE_LIST_CMDLINE
1391     $THREADS_LIST
1392     asm
1393     cross_compile
1394     debug
1395     extra_warnings
1396     logging
1397     lto
1398     optimizations
1399 "
1400
1401 PATHS_LIST='
1402     bindir
1403     datadir
1404     incdir
1405     libdir
1406     mandir
1407     prefix
1408     shlibdir
1409 '
1410
1411 CMDLINE_SET="
1412     $PATHS_LIST
1413     ar
1414     arch
1415     as
1416     build_suffix
1417     cc
1418     cpu
1419     cross_prefix
1420     dep_cc
1421     extra_version
1422     host_cc
1423     host_cflags
1424     host_ld
1425     host_ldflags
1426     host_libs
1427     host_os
1428     ld
1429     logfile
1430     malloc_prefix
1431     nm
1432     optflags
1433     pkg_config
1434     random_seed
1435     samples
1436     sysinclude
1437     sysroot
1438     target_exec
1439     target_os
1440     target_path
1441     toolchain
1442 "
1443
1444 CMDLINE_APPEND="
1445     extra_cflags
1446     host_cppflags
1447 "
1448
1449 # code dependency declarations
1450
1451 # architecture extensions
1452
1453 armv5te_deps="arm"
1454 armv6_deps="arm"
1455 armv6t2_deps="arm"
1456 neon_deps="arm"
1457 vfp_deps="arm"
1458 vfpv3_deps="vfp"
1459
1460 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1461
1462 altivec_deps="ppc"
1463 ppc4xx_deps="ppc"
1464
1465 vis_deps="sparc"
1466
1467 x86_64_suggest="cmov fast_cmov"
1468
1469 amd3dnow_deps="mmx"
1470 amd3dnowext_deps="amd3dnow"
1471 mmx_deps="x86"
1472 mmxext_deps="mmx"
1473 sse_deps="mmxext"
1474 sse2_deps="sse"
1475 sse3_deps="sse2"
1476 ssse3_deps="sse3"
1477 sse4_deps="ssse3"
1478 sse42_deps="sse4"
1479 avx_deps="sse42"
1480 fma4_deps="avx"
1481
1482 mmx_external_deps="yasm"
1483 mmx_inline_deps="inline_asm"
1484 mmx_suggest="mmx_external mmx_inline"
1485
1486 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1487     eval dep=\$${ext}_deps
1488     eval ${ext}_external_deps='"${dep}_external"'
1489     eval ${ext}_inline_deps='"${dep}_inline"'
1490     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1491 done
1492
1493 aligned_stack_if_any="ppc x86"
1494 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1495 fast_clz_if_any="alpha avr32 mips ppc x86"
1496 fast_unaligned_if_any="ppc x86"
1497
1498 inline_asm_deps="!tms470"
1499 need_memalign="altivec neon sse"
1500
1501 symver_if_any="symver_asm_label symver_gnu_asm"
1502
1503 log2_deps="!msvcrt"
1504
1505 # subsystems
1506 dct_select="rdft"
1507 error_resilience_select="dsputil"
1508 lpc_select="dsputil"
1509 mdct_select="fft"
1510 rdft_select="fft"
1511 mpegaudio_select="mpegaudiodsp"
1512 mpegaudiodsp_select="dct"
1513 mpegvideo_select="dsputil videodsp"
1514 mpegvideoenc_select="mpegvideo"
1515
1516 # decoders / encoders
1517 aac_decoder_select="mdct sinewin"
1518 aac_encoder_select="audio_frame_queue mdct sinewin"
1519 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1520 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1521 ac3_encoder_select="mdct ac3dsp dsputil"
1522 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1523 alac_encoder_select="lpc"
1524 als_decoder_select="dsputil"
1525 amrnb_decoder_select="lsp"
1526 amrwb_decoder_select="lsp"
1527 amv_decoder_select="dsputil"
1528 ape_decoder_select="dsputil"
1529 asv1_decoder_select="dsputil"
1530 asv1_encoder_select="dsputil"
1531 asv2_decoder_select="dsputil"
1532 asv2_encoder_select="dsputil"
1533 atrac1_decoder_select="mdct sinewin"
1534 atrac3_decoder_select="mdct"
1535 bink_decoder_select="dsputil"
1536 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1537 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1538 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1539 cllc_decoder_select="dsputil"
1540 comfortnoise_encoder_select="lpc"
1541 cook_decoder_select="dsputil mdct sinewin"
1542 cscd_decoder_select="lzo"
1543 cscd_decoder_suggest="zlib"
1544 dca_decoder_select="mdct"
1545 dnxhd_decoder_select="dsputil"
1546 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1547 dvvideo_decoder_select="dsputil"
1548 dvvideo_encoder_select="dsputil"
1549 dxa_decoder_select="zlib"
1550 eac3_decoder_select="ac3_decoder"
1551 eac3_encoder_select="ac3_encoder"
1552 eamad_decoder_select="aandcttables dsputil mpegvideo"
1553 eatgq_decoder_select="aandcttables dsputil"
1554 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1555 ffv1_decoder_select="dsputil golomb rangecoder"
1556 ffv1_encoder_select="dsputil rangecoder"
1557 ffvhuff_decoder_select="dsputil"
1558 ffvhuff_encoder_select="dsputil huffman"
1559 flac_decoder_select="golomb"
1560 flac_encoder_select="dsputil golomb lpc"
1561 flashsv_decoder_select="zlib"
1562 flashsv_encoder_select="zlib"
1563 flashsv2_decoder_select="zlib"
1564 flv_decoder_select="h263_decoder"
1565 flv_encoder_select="h263_encoder"
1566 fourxm_decoder_select="dsputil"
1567 fraps_decoder_select="dsputil huffman"
1568 h261_decoder_select="error_resilience mpegvideo"
1569 h261_encoder_select="aandcttables mpegvideoenc"
1570 h263_decoder_select="error_resilience h263_parser mpegvideo"
1571 h263_encoder_select="aandcttables mpegvideoenc"
1572 h263i_decoder_select="h263_decoder"
1573 h263p_encoder_select="h263_encoder"
1574 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1575 h264_decoder_suggest="error_resilience"
1576 huffyuv_decoder_select="dsputil"
1577 huffyuv_encoder_select="dsputil huffman"
1578 iac_decoder_select="dsputil fft mdct sinewin"
1579 imc_decoder_select="dsputil fft mdct sinewin"
1580 indeo3_decoder_select="dsputil"
1581 interplay_video_decoder_select="dsputil"
1582 jpegls_decoder_select="dsputil golomb"
1583 jpegls_encoder_select="golomb"
1584 jv_decoder_select="dsputil"
1585 lagarith_decoder_select="dsputil"
1586 ljpeg_encoder_select="aandcttables mpegvideoenc"
1587 loco_decoder_select="golomb"
1588 mdec_decoder_select="dsputil error_resilience mpegvideo"
1589 mimic_decoder_select="dsputil"
1590 mjpeg_decoder_select="dsputil"
1591 mjpegb_decoder_select="dsputil"
1592 mjpeg_encoder_select="aandcttables dsputil mpegvideoenc"
1593 mlp_decoder_select="dsputil mlp_parser"
1594 motionpixels_decoder_select="dsputil"
1595 mp1_decoder_select="mpegaudio"
1596 mp1float_decoder_select="mpegaudio"
1597 mp2_decoder_select="mpegaudio"
1598 mp2float_decoder_select="mpegaudio"
1599 mp3_decoder_select="mpegaudio"
1600 mp3adu_decoder_select="mpegaudio"
1601 mp3adufloat_decoder_select="mpegaudio"
1602 mp3float_decoder_select="mpegaudio"
1603 mp3on4_decoder_select="mpegaudio"
1604 mp3on4float_decoder_select="mpegaudio"
1605 mpc7_decoder_select="dsputil mpegaudiodsp"
1606 mpc8_decoder_select="dsputil mpegaudiodsp"
1607 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1608 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1609 mpeg1video_decoder_select="error_resilience mpegvideo"
1610 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1611 mpeg2video_decoder_select="error_resilience mpegvideo"
1612 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1613 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1614 mpeg4_encoder_select="h263_encoder"
1615 msmpeg4v1_decoder_select="h263_decoder"
1616 msmpeg4v2_decoder_select="h263_decoder"
1617 msmpeg4v2_encoder_select="h263_encoder"
1618 msmpeg4v3_decoder_select="h263_decoder"
1619 msmpeg4v3_encoder_select="h263_encoder"
1620 mss2_decoder_select="error_resilience vc1_decoder"
1621 mxpeg_decoder_select="dsputil"
1622 nellymoser_decoder_select="mdct sinewin"
1623 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1624 nuv_decoder_select="dsputil lzo"
1625 png_decoder_select="dsputil zlib"
1626 png_encoder_select="dsputil zlib"
1627 prores_decoder_select="dsputil"
1628 prores_encoder_select="dsputil"
1629 qcelp_decoder_select="lsp"
1630 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1631 ra_144_encoder_select="audio_frame_queue lpc"
1632 ralf_decoder_select="golomb"
1633 rv10_decoder_select="error_resilience h263_decoder"
1634 rv10_encoder_select="h263_encoder"
1635 rv20_decoder_select="error_resilience h263_decoder"
1636 rv20_encoder_select="h263_encoder"
1637 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1638 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1639 shorten_decoder_select="golomb"
1640 sipr_decoder_select="lsp"
1641 sp5x_decoder_select="dsputil"
1642 svq1_decoder_select="dsputil"
1643 svq1_encoder_select="aandcttables dsputil mpegvideoenc"
1644 svq3_decoder_select="golomb h264chroma h264dsp h264pred h264qpel mpegvideo videodsp"
1645 svq3_decoder_suggest="error_resilience zlib"
1646 tak_decoder_select="dsputil"
1647 theora_decoder_select="vp3_decoder"
1648 tiff_decoder_suggest="zlib"
1649 tiff_encoder_suggest="zlib"
1650 thp_decoder_select="dsputil"
1651 truehd_decoder_select="mlp_decoder"
1652 truemotion2_decoder_select="dsputil"
1653 truespeech_decoder_select="dsputil"
1654 tscc_decoder_select="zlib"
1655 twinvq_decoder_select="mdct lsp sinewin"
1656 utvideo_decoder_select="dsputil"
1657 utvideo_encoder_select="dsputil huffman"
1658 vble_decoder_select="dsputil"
1659 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel"
1660 vc1image_decoder_select="vc1_decoder"
1661 vorbis_decoder_select="mdct"
1662 vorbis_encoder_select="mdct"
1663 vp3_decoder_select="dsputil vp3dsp videodsp"
1664 vp5_decoder_select="dsputil h264chroma videodsp vp3dsp"
1665 vp6_decoder_select="dsputil h264chroma huffman videodsp vp3dsp"
1666 vp6a_decoder_select="vp6_decoder"
1667 vp6f_decoder_select="vp6_decoder"
1668 vp8_decoder_select="h264pred videodsp"
1669 wmapro_decoder_select="mdct sinewin"
1670 wmav1_decoder_select="mdct sinewin"
1671 wmav1_encoder_select="mdct sinewin"
1672 wmav2_decoder_select="mdct sinewin"
1673 wmav2_encoder_select="mdct sinewin"
1674 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1675 wmv1_decoder_select="h263_decoder"
1676 wmv1_encoder_select="h263_encoder"
1677 wmv2_decoder_select="h263_decoder videodsp"
1678 wmv2_encoder_select="h263_encoder"
1679 wmv3_decoder_select="vc1_decoder"
1680 wmv3image_decoder_select="wmv3_decoder"
1681 zerocodec_decoder_select="zlib"
1682 zlib_decoder_select="zlib"
1683 zlib_encoder_select="zlib"
1684 zmbv_decoder_select="zlib"
1685 zmbv_encoder_select="zlib"
1686
1687 # hardware accelerators
1688 dxva2_deps="dxva2api_h"
1689 vaapi_deps="va_va_h"
1690 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1691 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1692 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1693
1694 h263_vaapi_hwaccel_deps="vaapi"
1695 h263_vaapi_hwaccel_select="h263_decoder"
1696 h263_vdpau_hwaccel_deps="vdpau"
1697 h263_vdpau_hwaccel_select="h263_decoder"
1698 h264_dxva2_hwaccel_deps="dxva2"
1699 h264_dxva2_hwaccel_select="h264_decoder"
1700 h264_vaapi_hwaccel_deps="vaapi"
1701 h264_vaapi_hwaccel_select="h264_decoder"
1702 h264_vda_hwaccel_deps="vda"
1703 h264_vda_hwaccel_select="h264_decoder"
1704 h264_vdpau_decoder_deps="vdpau"
1705 h264_vdpau_decoder_select="h264_decoder"
1706 h264_vdpau_hwaccel_deps="vdpau"
1707 h264_vdpau_hwaccel_select="h264_decoder"
1708 mpeg_vdpau_decoder_deps="vdpau"
1709 mpeg_vdpau_decoder_select="mpeg2video_decoder"
1710 mpeg1_vdpau_decoder_deps="vdpau"
1711 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
1712 mpeg1_vdpau_hwaccel_deps="vdpau"
1713 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1714 mpeg2_dxva2_hwaccel_deps="dxva2"
1715 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1716 mpeg2_vaapi_hwaccel_deps="vaapi"
1717 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1718 mpeg2_vdpau_hwaccel_deps="vdpau"
1719 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1720 mpeg4_vaapi_hwaccel_deps="vaapi"
1721 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1722 mpeg4_vdpau_decoder_deps="vdpau"
1723 mpeg4_vdpau_decoder_select="mpeg4_decoder"
1724 mpeg4_vdpau_hwaccel_deps="vdpau"
1725 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1726 vc1_dxva2_hwaccel_deps="dxva2"
1727 vc1_dxva2_hwaccel_select="vc1_decoder"
1728 vc1_vaapi_hwaccel_deps="vaapi"
1729 vc1_vaapi_hwaccel_select="vc1_decoder"
1730 vc1_vdpau_decoder_deps="vdpau"
1731 vc1_vdpau_decoder_select="vc1_decoder"
1732 vc1_vdpau_hwaccel_deps="vdpau"
1733 vc1_vdpau_hwaccel_select="vc1_decoder"
1734 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1735 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1736 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
1737 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1738
1739 # parsers
1740 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1741 mpeg4video_parser_select="error_resilience mpegvideo"
1742 mpegvideo_parser_select="error_resilience mpegvideo"
1743 vc1_parser_select="mpegvideo"
1744
1745 # external libraries
1746 libfaac_encoder_deps="libfaac"
1747 libfaac_encoder_select="audio_frame_queue"
1748 libfdk_aac_encoder_deps="libfdk_aac"
1749 libfdk_aac_encoder_select="audio_frame_queue"
1750 libgsm_decoder_deps="libgsm"
1751 libgsm_encoder_deps="libgsm"
1752 libgsm_ms_decoder_deps="libgsm"
1753 libgsm_ms_encoder_deps="libgsm"
1754 libilbc_decoder_deps="libilbc"
1755 libilbc_encoder_deps="libilbc"
1756 libmp3lame_encoder_deps="libmp3lame"
1757 libmp3lame_encoder_select="audio_frame_queue"
1758 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1759 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1760 libopencore_amrnb_encoder_select="audio_frame_queue"
1761 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1762 libopenjpeg_decoder_deps="libopenjpeg"
1763 libopenjpeg_encoder_deps="libopenjpeg"
1764 libopus_decoder_deps="libopus"
1765 libopus_encoder_deps="libopus"
1766 libopus_encoder_select="audio_frame_queue"
1767 libschroedinger_decoder_deps="libschroedinger"
1768 libschroedinger_encoder_deps="libschroedinger"
1769 libspeex_decoder_deps="libspeex"
1770 libspeex_encoder_deps="libspeex"
1771 libspeex_encoder_select="audio_frame_queue"
1772 libtheora_encoder_deps="libtheora"
1773 libvo_aacenc_encoder_deps="libvo_aacenc"
1774 libvo_aacenc_encoder_select="audio_frame_queue"
1775 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1776 libvorbis_encoder_deps="libvorbis"
1777 libvorbis_encoder_select="audio_frame_queue"
1778 libvpx_vp8_decoder_deps="libvpx"
1779 libvpx_vp8_encoder_deps="libvpx"
1780 libvpx_vp9_decoder_deps="libvpx"
1781 libvpx_vp9_encoder_deps="libvpx"
1782 libx264_encoder_deps="libx264"
1783 libxavs_encoder_deps="libxavs"
1784 libxvid_encoder_deps="libxvid"
1785
1786 # demuxers / muxers
1787 ac3_demuxer_select="ac3_parser"
1788 asf_stream_muxer_select="asf_muxer"
1789 avisynth_demuxer_deps="avisynth"
1790 dirac_demuxer_select="dirac_parser"
1791 eac3_demuxer_select="ac3_parser"
1792 flac_demuxer_select="flac_parser"
1793 ipod_muxer_select="mov_muxer"
1794 ismv_muxer_select="mov_muxer"
1795 matroska_audio_muxer_select="matroska_muxer"
1796 matroska_demuxer_suggest="bzlib lzo zlib"
1797 mov_demuxer_suggest="zlib"
1798 mov_muxer_select="rtpenc_chain"
1799 mp3_demuxer_select="mpegaudio_parser"
1800 mp4_muxer_select="mov_muxer"
1801 mpegts_muxer_select="adts_muxer latm_muxer"
1802 mpegtsraw_demuxer_select="mpegts_demuxer"
1803 mxf_d10_muxer_select="mxf_muxer"
1804 ogg_demuxer_select="golomb"
1805 psp_muxer_select="mov_muxer"
1806 rtp_demuxer_select="sdp_demuxer"
1807 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1808 rtsp_demuxer_select="http_protocol rtpdec"
1809 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
1810 sap_demuxer_select="sdp_demuxer"
1811 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
1812 sdp_demuxer_select="rtpdec"
1813 smoothstreaming_muxer_select="ismv_muxer"
1814 spdif_muxer_select="aac_parser"
1815 tak_demuxer_select="tak_parser"
1816 tg2_muxer_select="mov_muxer"
1817 tgp_muxer_select="mov_muxer"
1818 w64_demuxer_deps="wav_demuxer"
1819
1820 # indevs / outdevs
1821 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1822 alsa_outdev_deps="alsa_asoundlib_h"
1823 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1824 dv1394_indev_deps="dv1394 dv_demuxer"
1825 fbdev_indev_deps="linux_fb_h"
1826 jack_indev_deps="jack_jack_h"
1827 libcdio_indev_deps="libcdio"
1828 libdc1394_indev_deps="libdc1394"
1829 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1830 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1831 pulse_indev_deps="libpulse"
1832 sndio_indev_deps="sndio_h"
1833 sndio_outdev_deps="sndio_h"
1834 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1835 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1836 vfwcap_indev_extralibs="-lavicap32"
1837 x11grab_indev_deps="x11grab XShmCreateImage"
1838
1839 # protocols
1840 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
1841 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
1842 ffrtmpcrypt_protocol_select="tcp_protocol"
1843 ffrtmphttp_protocol_deps="!librtmp_protocol"
1844 ffrtmphttp_protocol_select="http_protocol"
1845 gopher_protocol_select="network"
1846 httpproxy_protocol_select="tcp_protocol"
1847 http_protocol_select="tcp_protocol"
1848 https_protocol_select="tls_protocol"
1849 librtmp_protocol_deps="librtmp"
1850 librtmpe_protocol_deps="librtmp"
1851 librtmps_protocol_deps="librtmp"
1852 librtmpt_protocol_deps="librtmp"
1853 librtmpte_protocol_deps="librtmp"
1854 mmsh_protocol_select="http_protocol"
1855 mmst_protocol_select="network"
1856 rtmp_protocol_deps="!librtmp_protocol"
1857 rtmp_protocol_select="tcp_protocol"
1858 rtmpe_protocol_select="ffrtmpcrypt_protocol"
1859 rtmps_protocol_deps="!librtmp_protocol"
1860 rtmps_protocol_select="tls_protocol"
1861 rtmpt_protocol_select="ffrtmphttp_protocol"
1862 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
1863 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
1864 rtp_protocol_select="udp_protocol"
1865 sctp_protocol_deps="struct_sctp_event_subscribe"
1866 sctp_protocol_select="network"
1867 srtp_protocol_select="rtp_protocol"
1868 tcp_protocol_select="network"
1869 tls_protocol_deps_any="openssl gnutls"
1870 tls_protocol_select="tcp_protocol"
1871 udp_protocol_select="network"
1872
1873 # filters
1874 blackframe_filter_deps="gpl"
1875 boxblur_filter_deps="gpl"
1876 cropdetect_filter_deps="gpl"
1877 delogo_filter_deps="gpl"
1878 drawtext_filter_deps="libfreetype"
1879 frei0r_filter_deps="frei0r dlopen strtok_r"
1880 frei0r_filter_extralibs='$ldl'
1881 frei0r_src_filter_deps="frei0r dlopen strtok_r"
1882 frei0r_src_filter_extralibs='$ldl'
1883 hqdn3d_filter_deps="gpl"
1884 resample_filter_deps="avresample"
1885 ocv_filter_deps="libopencv"
1886 scale_filter_deps="swscale"
1887 yadif_filter_deps="gpl"
1888
1889 # libraries
1890 avcodec_deps="avutil"
1891 avdevice_deps="avutil avcodec avformat"
1892 avfilter_deps="avutil"
1893 avformat_deps="avutil avcodec"
1894 avresample_deps="avutil"
1895 swscale_deps="avutil"
1896
1897 # programs
1898 avconv_deps="avcodec avfilter avformat avresample swscale"
1899 avconv_select="aformat_filter anull_filter asyncts_filter format_filter
1900                fps_filter null_filter resample_filter scale_filter
1901                setpts_filter"
1902 avplay_deps="avcodec avformat avresample swscale sdl"
1903 avplay_select="rdft"
1904 avprobe_deps="avcodec avformat"
1905 avserver_deps="avformat ffm_muxer fork rtp_protocol rtsp_demuxer !shared"
1906 avserver_extralibs='$ldl'
1907
1908 doc_deps="texi2html"
1909
1910 # default parameters
1911
1912 logfile="config.log"
1913
1914 # installation paths
1915 prefix_default="/usr/local"
1916 bindir_default='${prefix}/bin'
1917 datadir_default='${prefix}/share/avconv'
1918 incdir_default='${prefix}/include'
1919 libdir_default='${prefix}/lib'
1920 mandir_default='${prefix}/share/man'
1921 shlibdir_default="$libdir_default"
1922
1923 # toolchain
1924 ar_default="ar"
1925 cc_default="gcc"
1926 host_cc_default="gcc"
1927 cp_f="cp -f"
1928 ln_s="ln -s -f"
1929 nm_default="nm -g"
1930 objformat="elf"
1931 pkg_config_default=pkg-config
1932 ranlib="ranlib"
1933 yasmexe="yasm"
1934
1935 nogas=":"
1936
1937 # machine
1938 arch_default=$(uname -m)
1939 cpu="generic"
1940
1941 # OS
1942 target_os_default=$(tolower $(uname -s))
1943 host_os=$target_os_default
1944
1945 # configurable options
1946 enable $LIBRARY_LIST $PROGRAM_LIST
1947
1948 enable asm
1949 enable debug
1950 enable doc
1951 enable optimizations
1952 enable safe_bitstream_reader
1953 enable static
1954 enable swscale_alpha
1955
1956 # By default, enable only those hwaccels that have no external dependencies.
1957 enable dxva2 vdpau
1958
1959 # build settings
1960 SHFLAGS='-shared -Wl,-soname,$$(@F)'
1961 AVSERVERLDFLAGS=-Wl,-E
1962 LIBPREF="lib"
1963 LIBSUF=".a"
1964 FULLNAME='$(NAME)$(BUILDSUF)'
1965 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
1966 SLIBPREF="lib"
1967 SLIBSUF=".so"
1968 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
1969 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
1970 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
1971 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
1972 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
1973 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
1974
1975 asflags_filter=echo
1976 cflags_filter=echo
1977 ldflags_filter=echo
1978
1979 AS_C='-c'
1980 AS_O='-o $@'
1981 CC_C='-c'
1982 CC_E='-E -o $@'
1983 CC_O='-o $@'
1984 LD_O='-o $@'
1985 LD_LIB='-l%'
1986 LD_PATH='-L'
1987 HOSTCC_C='-c'
1988 HOSTCC_O='-o $@'
1989 HOSTLD_O='-o $@'
1990
1991 host_cflags='-O3 -g'
1992 host_cppflags='-D_ISOC99_SOURCE -D_XOPEN_SOURCE=600'
1993 host_libs='-lm'
1994 host_cflags_filter=echo
1995 host_ldflags_filter=echo
1996
1997 target_path='$(CURDIR)'
1998
1999 # since the object filename is not given with the -MM flag, the compiler
2000 # is only able to print the basename, and we must add the path ourselves
2001 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2002 DEPFLAGS='-MM'
2003
2004 # find source path
2005 if test -f configure; then
2006     source_path=.
2007 else
2008     source_path=$(cd $(dirname "$0"); pwd)
2009     echo "$source_path" | grep -q '[[:blank:]]' &&
2010         die "Out of tree builds are impossible with whitespace in source path."
2011     test -e "$source_path/config.h" &&
2012         die "Out of tree builds are impossible with config.h in source dir."
2013 fi
2014
2015 for v in "$@"; do
2016     r=${v#*=}
2017     l=${v%"$r"}
2018     r=$(sh_quote "$r")
2019     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2020 done
2021
2022 find_things(){
2023     thing=$1
2024     pattern=$2
2025     file=$source_path/$3
2026     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2027 }
2028
2029 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2030 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2031 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2032 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2033 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2034 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2035 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2036 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2037 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2038 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2039 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2040
2041 ALL_COMPONENTS="
2042     $BSF_LIST
2043     $DECODER_LIST
2044     $DEMUXER_LIST
2045     $ENCODER_LIST
2046     $FILTER_LIST
2047     $HWACCEL_LIST
2048     $INDEV_LIST
2049     $MUXER_LIST
2050     $OUTDEV_LIST
2051     $PARSER_LIST
2052     $PROTOCOL_LIST
2053 "
2054
2055 for n in $COMPONENT_LIST; do
2056     v=$(toupper ${n%s})_LIST
2057     eval enable \$$v
2058     eval ${n}_if_any="\$$v"
2059 done
2060
2061 enable $ARCH_EXT_LIST
2062
2063 die_unknown(){
2064     echo "Unknown option \"$1\"."
2065     echo "See $0 --help for available options."
2066     exit 1
2067 }
2068
2069 print_3_columns() {
2070     cat | tr ' ' '\n' | sort | pr -r -3 -t
2071 }
2072
2073 show_list() {
2074     suffix=_$1
2075     shift
2076     echo $* | sed s/$suffix//g | print_3_columns
2077     exit 0
2078 }
2079
2080 rand_list(){
2081     IFS=', '
2082     set -- $*
2083     unset IFS
2084     for thing; do
2085         comp=${thing%:*}
2086         prob=${thing#$comp}
2087         prob=${prob#:}
2088         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2089         echo "prob ${prob:-0.5}"
2090         printf '%s\n' $comp
2091     done
2092 }
2093
2094 do_random(){
2095     action=$1
2096     shift
2097     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2098     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2099 }
2100
2101 for opt do
2102     optval="${opt#*=}"
2103     case "$opt" in
2104         --extra-ldflags=*)
2105             add_ldflags $optval
2106         ;;
2107         --extra-libs=*)
2108             add_extralibs $optval
2109         ;;
2110         --disable-devices)
2111             disable $INDEV_LIST $OUTDEV_LIST
2112         ;;
2113         --enable-debug=*)
2114             debuglevel="$optval"
2115         ;;
2116         --disable-programs)
2117             disable $PROGRAM_LIST
2118         ;;
2119         --disable-everything)
2120             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2121         ;;
2122         --disable-all)
2123             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2124             disable $LIBRARY_LIST $PROGRAM_LIST doc
2125         ;;
2126         --enable-random|--disable-random)
2127             action=${opt%%-random}
2128             do_random ${action#--} $COMPONENT_LIST
2129         ;;
2130         --enable-random=*|--disable-random=*)
2131             action=${opt%%-random=*}
2132             do_random ${action#--} $optval
2133         ;;
2134         --enable-*=*|--disable-*=*)
2135             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2136             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2137             eval list=\$$(toupper $thing)_LIST
2138             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2139             $action $(filter "$name" $list)
2140         ;;
2141         --enable-?*|--disable-?*)
2142             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2143             if is_in $option $COMPONENT_LIST; then
2144                 test $action = disable && action=unset
2145                 eval $action \$$(toupper ${option%s})_LIST
2146             elif is_in $option $CMDLINE_SELECT; then
2147                 $action $option
2148             else
2149                 die_unknown $opt
2150             fi
2151         ;;
2152         --list-*)
2153             NAME="${opt#--list-}"
2154             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2155             NAME=${NAME%s}
2156             eval show_list $NAME \$$(toupper $NAME)_LIST
2157         ;;
2158         --help|-h) show_help
2159         ;;
2160         *)
2161             optname="${opt%%=*}"
2162             optname="${optname#--}"
2163             optname=$(echo "$optname" | sed 's/-/_/g')
2164             if is_in $optname $CMDLINE_SET; then
2165                 eval $optname='$optval'
2166             elif is_in $optname $CMDLINE_APPEND; then
2167                 append $optname "$optval"
2168             else
2169                 die_unknown $opt
2170             fi
2171         ;;
2172     esac
2173 done
2174
2175 disabled logging && logfile=/dev/null
2176
2177 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2178 set >> $logfile
2179
2180 test -n "$cross_prefix" && enable cross_compile
2181
2182 if enabled cross_compile; then
2183     test -n "$arch" && test -n "$target_os" ||
2184         die "Must specify target arch and OS when cross-compiling"
2185 fi
2186
2187 ar_default="${cross_prefix}${ar_default}"
2188 cc_default="${cross_prefix}${cc_default}"
2189 nm_default="${cross_prefix}${nm_default}"
2190 pkg_config_default="${cross_prefix}${pkg_config_default}"
2191 ranlib="${cross_prefix}${ranlib}"
2192
2193 sysinclude_default="${sysroot}/usr/include"
2194
2195 case "$toolchain" in
2196     clang-asan)
2197         cc_default="clang"
2198         add_cflags  -fsanitize=address
2199         add_ldflags -fsanitize=address
2200     ;;
2201     clang-tsan)
2202         cc_default="clang"
2203         add_cflags  -fsanitize=thread -pie
2204         add_ldflags -fsanitize=thread -pie
2205     ;;
2206     msvc)
2207         cc_default="c99wrap cl"
2208         ld_default="c99wrap link"
2209         nm_default="dumpbin -symbols"
2210         ar_default="lib"
2211         target_os_default="win32"
2212     ;;
2213     gcov)
2214         add_cflags  -fprofile-arcs -ftest-coverage
2215         add_ldflags -fprofile-arcs -ftest-coverage
2216     ;;
2217     ?*)
2218         die "Unknown toolchain $toolchain"
2219     ;;
2220 esac
2221
2222 set_default arch cc pkg_config sysinclude target_os
2223 enabled cross_compile || host_cc_default=$cc
2224 set_default host_cc
2225
2226 if ! $pkg_config --version >/dev/null 2>&1; then
2227     warn "$pkg_config not found, library detection may fail."
2228     pkg_config=false
2229 fi
2230
2231 exesuf() {
2232     case $1 in
2233         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2234     esac
2235 }
2236
2237 EXESUF=$(exesuf $target_os)
2238 HOSTEXESUF=$(exesuf $host_os)
2239
2240 # set temporary file name
2241 : ${TMPDIR:=$TEMPDIR}
2242 : ${TMPDIR:=$TMP}
2243 : ${TMPDIR:=/tmp}
2244
2245 if ! check_cmd mktemp -u XXXXXX; then
2246     # simple replacement for missing mktemp
2247     # NOT SAFE FOR GENERAL USE
2248     mktemp(){
2249         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2250     }
2251 fi
2252
2253 tmpfile(){
2254     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2255         (set -C; exec > $tmp) 2>/dev/null ||
2256         die "Unable to create temporary file in $TMPDIR."
2257     append TMPFILES $tmp
2258     eval $1=$tmp
2259 }
2260
2261 trap 'rm -f -- $TMPFILES' EXIT
2262
2263 tmpfile TMPASM .asm
2264 tmpfile TMPC   .c
2265 tmpfile TMPE   $EXESUF
2266 tmpfile TMPH   .h
2267 tmpfile TMPO   .o
2268 tmpfile TMPS   .S
2269 tmpfile TMPSH  .sh
2270 tmpfile TMPV   .ver
2271
2272 unset -f mktemp
2273
2274 chmod +x $TMPE
2275
2276 # make sure we can execute files in $TMPDIR
2277 cat > $TMPSH 2>> $logfile <<EOF
2278 #! /bin/sh
2279 EOF
2280 chmod +x $TMPSH >> $logfile 2>&1
2281 if ! $TMPSH >> $logfile 2>&1; then
2282     cat <<EOF
2283 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2284 variable to another directory and make sure that it is not mounted noexec.
2285 EOF
2286     die "Sanity test failed."
2287 fi
2288
2289 ccc_flags(){
2290     for flag; do
2291         case $flag in
2292             -std=c99)           echo -c99                       ;;
2293             -mcpu=*)            echo -arch ${flag#*=}           ;;
2294             -mieee)             echo -ieee                      ;;
2295             -O*|-fast)          echo $flag                      ;;
2296             -fno-math-errno)    echo -assume nomath_errno       ;;
2297             -g)                 echo -g3                        ;;
2298             -Wall)              echo -msg_enable level2         ;;
2299             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2300             -Wl,*)              echo $flag                      ;;
2301             -f*|-W*)                                            ;;
2302             *)                  echo $flag                      ;;
2303         esac
2304    done
2305 }
2306
2307 msvc_flags(){
2308     for flag; do
2309         case $flag in
2310             -fomit-frame-pointer) echo -Oy ;;
2311             -g)                   echo -Z7 ;;
2312             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389 \
2313                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2314                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2315                                        -wd4996 -wd4273 ;;
2316             -std=c99)             ;;
2317             -fno-math-errno)      ;;
2318             -fno-common)          ;;
2319             -fno-signed-zeros)    ;;
2320             -fPIC)                ;;
2321             -lz)                  echo zlib.lib ;;
2322             -lavifil32)           echo vfw32.lib ;;
2323             -lavicap32)           echo vfw32.lib user32.lib ;;
2324             -l*)                  echo ${flag#-l}.lib ;;
2325             *)                    echo $flag ;;
2326         esac
2327     done
2328 }
2329
2330 pgi_flags(){
2331     for flag; do
2332         case $flag in
2333             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2334             -fomit-frame-pointer) echo -Mnoframe ;;
2335             -g)                   echo -gopt ;;
2336             *)                    echo $flag ;;
2337         esac
2338     done
2339 }
2340
2341 suncc_flags(){
2342     for flag; do
2343         case $flag in
2344             -march=*|-mcpu=*)
2345                 case "${flag#*=}" in
2346                     native)                   echo -xtarget=native       ;;
2347                     v9|niagara)               echo -xarch=sparc          ;;
2348                     ultrasparc)               echo -xarch=sparcvis       ;;
2349                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2350                     i586|pentium)             echo -xchip=pentium        ;;
2351                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2352                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2353                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2354                     pentium4*)          echo -xtarget=pentium4           ;;
2355                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2356                     *-sse3)             echo -xarch=sse3                 ;;
2357                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2358                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2359                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2360                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2361                     athlon-4|athlon-[mx]p)    echo -xarch=ssea           ;;
2362                     k8|opteron|athlon64|athlon-fx)
2363                                               echo -xarch=sse2a          ;;
2364                     athlon*)                  echo -xarch=pentium_proa   ;;
2365                 esac
2366                 ;;
2367             -std=c99)             echo -xc99              ;;
2368             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2369             -fPIC)                echo -KPIC -xcode=pic32 ;;
2370             -W*,*)                echo $flag              ;;
2371             -f*-*|-W*|-mimpure-text)                      ;;
2372             -shared)              echo -G                 ;;
2373             *)                    echo $flag              ;;
2374         esac
2375     done
2376 }
2377
2378 tms470_flags(){
2379     for flag; do
2380         case $flag in
2381             -march=*|-mcpu=*)
2382                 case "${flag#*=}" in
2383                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2384                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2385                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2386                     armv6*|arm11*)          echo -mv=6   ;;
2387                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2388                                             echo -mv=5e  ;;
2389                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2390                 esac
2391                 ;;
2392             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2393             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2394             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2395             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2396             -msoft-float)   echo --float_support=vfplib       ;;
2397             -O[0-3]|-mf=*)  echo $flag                        ;;
2398             -g)             echo -g -mn                       ;;
2399             -pds=*)         echo $flag                        ;;
2400             -D*|-I*)        echo $flag                        ;;
2401             --gcc|--abi=*)  echo $flag                        ;;
2402             -me)            echo $flag                        ;;
2403         esac
2404     done
2405 }
2406
2407 probe_cc(){
2408     pfx=$1
2409     _cc=$2
2410
2411     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2412     unset _ld_o _ldflags _ld_lib _ld_path
2413     unset _depflags _DEPCMD _DEPFLAGS
2414     _flags_filter=echo
2415
2416     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2417         _type=llvm_gcc
2418         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2419         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2420         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2421         _cflags_speed='-O3'
2422         _cflags_size='-Os'
2423     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2424         _type=gcc
2425         gcc_version=$($_cc --version | head -n1)
2426         gcc_basever=$($_cc -dumpversion)
2427         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2428         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2429         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2430         if ! $_cc -dumpversion | grep -q '^2\.'; then
2431             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2432         fi
2433         _cflags_speed='-O3'
2434         _cflags_size='-Os'
2435     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2436         _type=icc
2437         _ident=$($_cc --version | head -n1)
2438         _depflags='-MMD'
2439         _cflags_speed='-O3'
2440         _cflags_size='-Os'
2441         _cflags_noopt='-O1'
2442     elif $_cc -v 2>&1 | grep -q xlc; then
2443         _type=xlc
2444         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2445         _cflags_speed='-O5'
2446         _cflags_size='-O5 -qcompact'
2447     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2448         _type=ccc
2449         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2450         _DEPFLAGS='-M'
2451         _cflags_speed='-fast'
2452         _cflags_size='-O1'
2453         _flags_filter=ccc_flags
2454     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2455         test -d "$sysroot" || die "No valid sysroot specified."
2456         _type=armcc
2457         _ident=$($_cc --vsn | head -n1)
2458         armcc_conf="$PWD/armcc.conf"
2459         $_cc --arm_linux_configure                 \
2460              --arm_linux_config_file="$armcc_conf" \
2461              --configure_sysroot="$sysroot"        \
2462              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2463              die "Error creating armcc configuration file."
2464         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2465         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2466         as_default="${cross_prefix}gcc"
2467         _depflags='-MMD'
2468         _cflags_speed='-O3'
2469         _cflags_size='-Os'
2470     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2471         _type=tms470
2472         _ident=$($_cc -version | head -n1 | tr -s ' ')
2473         _flags='--gcc --abi=eabi -me'
2474         _cc_e='-ppl -fe=$@'
2475         _cc_o='-fe=$@'
2476         _depflags='-ppa -ppd=$(@:.o=.d)'
2477         _cflags_speed='-O3 -mf=5'
2478         _cflags_size='-O3 -mf=2'
2479         _flags_filter=tms470_flags
2480     elif $_cc -v 2>&1 | grep -q clang; then
2481         _type=clang
2482         _ident=$($_cc --version | head -n1)
2483         _depflags='-MMD'
2484         _cflags_speed='-O3'
2485         _cflags_size='-Os'
2486     elif $_cc -V 2>&1 | grep -q Sun; then
2487         _type=suncc
2488         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2489         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2490         _DEPFLAGS='-xM1 -xc99'
2491         _ldflags='-std=c99'
2492         _cflags_speed='-O5'
2493         _cflags_size='-O5 -xspace'
2494         _flags_filter=suncc_flags
2495     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2496         _type=pathscale
2497         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2498         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2499         _cflags_speed='-O2'
2500         _cflags_size='-Os'
2501         _flags_filter='filter_out -Wdisabled-optimization'
2502     elif $_cc -v 2>&1 | grep -q Open64; then
2503         _type=open64
2504         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2505         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2506         _cflags_speed='-O2'
2507         _cflags_size='-Os'
2508         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2509     elif $_cc -V 2>&1 | grep -q Portland; then
2510         _type=pgi
2511         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2512         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2513         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2514         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2515         _cflags_noopt="-O1"
2516         _flags_filter=pgi_flags
2517     elif $_cc 2>&1 | grep -q Microsoft; then
2518         _type=msvc
2519         _ident=$($cc 2>&1 | head -n1)
2520         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2521         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2522         _cflags_speed="-O2"
2523         _cflags_size="-O1"
2524         # Nonstandard output options, to avoid msys path conversion issues, relies on wrapper to remap it
2525         if $_cc 2>&1 | grep -q Linker; then
2526             _ld_o='-out $@'
2527         else
2528             _ld_o='-Fe$@'
2529         fi
2530         _cc_o='-Fo $@'
2531         _cc_e='-P -Fi $@'
2532         _flags_filter=msvc_flags
2533         _ld_lib='lib%.a'
2534         _ld_path='-libpath:'
2535         _flags='-nologo'
2536         _cflags='-D_USE_MATH_DEFINES -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2537         if [ $pfx = hostcc ]; then
2538             append _cflags -Dsnprintf=_snprintf
2539         fi
2540     fi
2541
2542     eval ${pfx}_type=\$_type
2543     eval ${pfx}_ident=\$_ident
2544 }
2545
2546 set_ccvars(){
2547     eval ${1}_C=\${_cc_c-\${${1}_C}}
2548     eval ${1}_E=\${_cc_e-\${${1}_E}}
2549     eval ${1}_O=\${_cc_o-\${${1}_O}}
2550
2551     if [ -n "$_depflags" ]; then
2552         eval ${1}_DEPFLAGS=\$_depflags
2553     else
2554         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2555         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2556         eval DEP${1}FLAGS=\$_flags
2557     fi
2558 }
2559
2560 probe_cc cc "$cc"
2561 cflags_filter=$_flags_filter
2562 cflags_speed=$_cflags_speed
2563 cflags_size=$_cflags_size
2564 cflags_noopt=$_cflags_noopt
2565 add_cflags $_flags $_cflags
2566 cc_ldflags=$_ldflags
2567 set_ccvars CC
2568
2569 probe_cc hostcc "$host_cc"
2570 host_cflags_filter=$_flags_filter
2571 add_host_cflags  $_flags $_cflags
2572 set_ccvars HOSTCC
2573
2574 test -n "$cc_type" && enable $cc_type ||
2575     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2576
2577 : ${as_default:=$cc}
2578 : ${dep_cc_default:=$cc}
2579 : ${ld_default:=$cc}
2580 : ${host_ld_default:=$host_cc}
2581 set_default ar as dep_cc ld host_ld
2582
2583 probe_cc as "$as"
2584 asflags_filter=$_flags_filter
2585 add_asflags $_flags $_cflags
2586 set_ccvars AS
2587
2588 probe_cc ld "$ld"
2589 ldflags_filter=$_flags_filter
2590 add_ldflags $_flags $_ldflags
2591 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2592 LD_O=${_ld_o-$LD_O}
2593 LD_LIB=${_ld_lib-$LD_LIB}
2594 LD_PATH=${_ld_path-$LD_PATH}
2595
2596 probe_cc hostld "$host_ld"
2597 host_ldflags_filter=$_flags_filter
2598 add_host_ldflags $_flags $_ldflags
2599 HOSTLD_O=${_ld_o-$HOSTLD_O}
2600
2601 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2602     probe_cc depcc "$dep_cc"
2603     CCDEP=${_DEPCMD:-$DEPCMD}
2604     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2605     DEPCCFLAGS=$_flags
2606 fi
2607
2608 if $ar 2>&1 | grep -q Microsoft; then
2609     arflags="-nologo"
2610     ar_o='-out:$@'
2611 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2612     arflags="rq"
2613     ar_o='$@'
2614 else
2615     arflags="rc"
2616     ar_o='$@'
2617 fi
2618
2619 add_cflags $extra_cflags
2620 add_asflags $extra_cflags
2621
2622 if test -n "$sysroot"; then
2623     case "$cc_type" in
2624         gcc|llvm_gcc|clang)
2625             add_cppflags --sysroot="$sysroot"
2626             add_ldflags --sysroot="$sysroot"
2627         ;;
2628         tms470)
2629             add_cppflags -I"$sysinclude"
2630             add_ldflags  --sysroot="$sysroot"
2631         ;;
2632     esac
2633 fi
2634
2635 if test "$cpu" = host; then
2636     enabled cross_compile && die "--cpu=host makes no sense when cross-compiling."
2637
2638     case "$cc_type" in
2639         gcc|llvm_gcc)
2640             check_native(){
2641                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2642                 sed -n "/cc1.*$1=/{
2643                             s/.*$1=\\([^ ]*\\).*/\\1/
2644                             p
2645                             q
2646                         }" $TMPE
2647             }
2648             cpu=$(check_native -march || check_native -mcpu)
2649         ;;
2650     esac
2651
2652     test "${cpu:-host}" = host && die "--cpu=host not supported with compiler $cc"
2653 fi
2654
2655 # Deal with common $arch aliases
2656 case "$arch" in
2657     aarch64|arm64)
2658         arch="aarch64"
2659     ;;
2660     arm*)
2661         arch="arm"
2662     ;;
2663     mips*|IP*)
2664         arch="mips"
2665     ;;
2666     parisc*|hppa*)
2667         arch="parisc"
2668     ;;
2669     "Power Macintosh"|ppc*|powerpc*)
2670         arch="ppc"
2671     ;;
2672     s390|s390x)
2673         arch="s390"
2674     ;;
2675     sh4|sh)
2676         arch="sh4"
2677     ;;
2678     sun4u|sparc*)
2679         arch="sparc"
2680     ;;
2681     tilegx|tile-gx)
2682         arch="tilegx"
2683     ;;
2684     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
2685         arch="x86"
2686     ;;
2687 esac
2688
2689 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2690 enable $arch
2691
2692 # Add processor-specific flags
2693 if enabled aarch64; then
2694
2695     case $cpu in
2696         armv*)
2697             cpuflags="-march=$cpu"
2698         ;;
2699         *)
2700             cpuflags="-mcpu=$cpu"
2701         ;;
2702     esac
2703
2704 elif enabled alpha; then
2705
2706     cpuflags="-mcpu=$cpu"
2707
2708 elif enabled arm; then
2709
2710     check_arm_arch() {
2711         check_cpp_condition stddef.h \
2712             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
2713             $cpuflags
2714     }
2715
2716     probe_arm_arch() {
2717         if   check_arm_arch 4;        then echo armv4;
2718         elif check_arm_arch 4T;       then echo armv4t;
2719         elif check_arm_arch 5;        then echo armv5;
2720         elif check_arm_arch 5E;       then echo armv5e;
2721         elif check_arm_arch 5T;       then echo armv5t;
2722         elif check_arm_arch 5TE;      then echo armv5te;
2723         elif check_arm_arch 5TEJ;     then echo armv5te;
2724         elif check_arm_arch 6;        then echo armv6;
2725         elif check_arm_arch 6J;       then echo armv6j;
2726         elif check_arm_arch 6K;       then echo armv6k;
2727         elif check_arm_arch 6Z;       then echo armv6z;
2728         elif check_arm_arch 6ZK;      then echo armv6zk;
2729         elif check_arm_arch 6T2;      then echo armv6t2;
2730         elif check_arm_arch 7;        then echo armv7;
2731         elif check_arm_arch 7A  7_A;  then echo armv7-a;
2732         elif check_arm_arch 7R  7_R;  then echo armv7-r;
2733         elif check_arm_arch 7M  7_M;  then echo armv7-m;
2734         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
2735         elif check_arm_arch 8A  8_A;  then echo armv8-a;
2736         fi
2737     }
2738
2739     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
2740
2741     case $cpu in
2742         armv*)
2743             cpuflags="-march=$cpu"
2744             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
2745         ;;
2746         *)
2747             cpuflags="-mcpu=$cpu"
2748             case $cpu in
2749                 cortex-a*)                               subarch=armv7a  ;;
2750                 cortex-r*)                               subarch=armv7r  ;;
2751                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
2752                 arm11*)                                  subarch=armv6   ;;
2753                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
2754                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
2755                 *)                             subarch=$(probe_arm_arch) ;;
2756             esac
2757         ;;
2758     esac
2759
2760     case "$subarch" in
2761         armv5t*)    enable fast_clz                ;;
2762         armv[6-8]*) enable fast_clz fast_unaligned ;;
2763     esac
2764
2765 elif enabled avr32; then
2766
2767     case $cpu in
2768         ap7[02]0[0-2])
2769             subarch="avr32_ap"
2770             cpuflags="-mpart=$cpu"
2771         ;;
2772         ap)
2773             subarch="avr32_ap"
2774             cpuflags="-march=$cpu"
2775         ;;
2776         uc3[ab]*)
2777             subarch="avr32_uc"
2778             cpuflags="-mcpu=$cpu"
2779         ;;
2780         uc)
2781             subarch="avr32_uc"
2782             cpuflags="-march=$cpu"
2783         ;;
2784     esac
2785
2786 elif enabled bfin; then
2787
2788     cpuflags="-mcpu=$cpu"
2789
2790 elif enabled mips; then
2791
2792     cpuflags="-march=$cpu"
2793
2794 elif enabled ppc; then
2795
2796     case $(tolower $cpu) in
2797         601|ppc601|powerpc601)
2798             cpuflags="-mcpu=601"
2799             disable altivec
2800         ;;
2801         603*|ppc603*|powerpc603*)
2802             cpuflags="-mcpu=603"
2803             disable altivec
2804         ;;
2805         604*|ppc604*|powerpc604*)
2806             cpuflags="-mcpu=604"
2807             disable altivec
2808         ;;
2809         g3|75*|ppc75*|powerpc75*)
2810             cpuflags="-mcpu=750"
2811             disable altivec
2812         ;;
2813         g4|745*|ppc745*|powerpc745*)
2814             cpuflags="-mcpu=7450"
2815         ;;
2816         74*|ppc74*|powerpc74*)
2817             cpuflags="-mcpu=7400"
2818         ;;
2819         g5|970|ppc970|powerpc970)
2820             cpuflags="-mcpu=970"
2821         ;;
2822         power[3-7]*)
2823             cpuflags="-mcpu=$cpu"
2824         ;;
2825         cell)
2826             cpuflags="-mcpu=cell"
2827             enable ldbrx
2828         ;;
2829         e500mc)
2830             cpuflags="-mcpu=e500mc"
2831             disable altivec
2832         ;;
2833         e500v2)
2834             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
2835             disable altivec
2836         ;;
2837         e500)
2838             cpuflags="-mcpu=8540 -mhard-float"
2839             disable altivec
2840         ;;
2841     esac
2842
2843 elif enabled sparc; then
2844
2845     case $cpu in
2846         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
2847             cpuflags="-mcpu=$cpu"
2848             disable vis
2849         ;;
2850         ultrasparc*|niagara[234])
2851             cpuflags="-mcpu=$cpu"
2852         ;;
2853     esac
2854
2855 elif enabled x86; then
2856
2857     case $cpu in
2858         i[345]86|pentium)
2859             cpuflags="-march=$cpu"
2860             disable mmx
2861         ;;
2862         # targets that do NOT support conditional mov (cmov)
2863         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
2864             cpuflags="-march=$cpu"
2865             disable cmov
2866         ;;
2867         # targets that do support conditional mov (cmov)
2868         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
2869             cpuflags="-march=$cpu"
2870             enable cmov
2871             enable fast_cmov
2872         ;;
2873         # targets that do support conditional mov but on which it's slow
2874         pentium4|pentium4m|prescott|nocona)
2875             cpuflags="-march=$cpu"
2876             enable cmov
2877             disable fast_cmov
2878         ;;
2879     esac
2880
2881 fi
2882
2883 if [ "$cpu" != generic ]; then
2884     add_cflags  $cpuflags
2885     add_asflags $cpuflags
2886 fi
2887
2888 # compiler sanity check
2889 check_exec <<EOF
2890 int main(void){ return 0; }
2891 EOF
2892 if test "$?" != 0; then
2893     echo "$cc is unable to create an executable file."
2894     if test -z "$cross_prefix" && ! enabled cross_compile ; then
2895         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
2896         echo "Only do this if you know what cross compiling means."
2897     fi
2898     die "C compiler test failed."
2899 fi
2900
2901 add_cppflags -D_ISOC99_SOURCE
2902 check_cflags -std=c99
2903 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
2904 #include <stdlib.h>
2905 EOF
2906 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
2907 #include <stdlib.h>
2908 EOF
2909
2910 check_host_cflags -std=c99
2911 check_host_cflags -Wall
2912
2913 check_64bit(){
2914     arch32=$1
2915     arch64=$2
2916     expr=$3
2917     check_code cc "" "int test[2*($expr) - 1]" &&
2918         subarch=$arch64 || subarch=$arch32
2919 }
2920
2921 case "$arch" in
2922     aarch64|alpha|ia64)
2923         spic=$shared
2924     ;;
2925     mips)
2926         check_64bit mips mips64 '_MIPS_SIM > 1'
2927         spic=$shared
2928     ;;
2929     parisc)
2930         check_64bit parisc parisc64 'sizeof(void *) > 4'
2931         spic=$shared
2932     ;;
2933     ppc)
2934         check_64bit ppc ppc64 'sizeof(void *) > 4'
2935         spic=$shared
2936     ;;
2937     sparc)
2938         check_64bit sparc sparc64 'sizeof(void *) > 4'
2939         spic=$shared
2940     ;;
2941     x86)
2942         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
2943         if test "$subarch" = "x86_64"; then
2944             spic=$shared
2945         fi
2946     ;;
2947 esac
2948
2949 enable $subarch
2950 enabled spic && enable pic
2951
2952 # OS specific
2953 case $target_os in
2954     haiku)
2955         prefix_default="/boot/common"
2956         network_extralibs="-lnetwork"
2957         host_libs=
2958         ;;
2959     sunos)
2960         AVSERVERLDFLAGS=""
2961         SHFLAGS='-shared -Wl,-h,$$(@F)'
2962         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
2963         network_extralibs="-lsocket -lnsl"
2964         add_cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
2965         # When using suncc to build, the Solaris linker will mark
2966         # an executable with each instruction set encountered by
2967         # the Solaris assembler.  As our libraries contain their own
2968         # guards for processor-specific code, instead suppress
2969         # generation of the HWCAPS ELF section on Solaris x86 only.
2970         enabled_all suncc x86 && echo "hwcap_1 = OVERRIDE;" > mapfile && add_ldflags -Wl,-M,mapfile
2971         nm_default='nm -P -g'
2972         ;;
2973     netbsd)
2974         disable symver
2975         oss_indev_extralibs="-lossaudio"
2976         oss_outdev_extralibs="-lossaudio"
2977         ;;
2978     openbsd|bitrig)
2979         disable symver
2980         SHFLAGS='-shared'
2981         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
2982         SLIB_INSTALL_LINKS=
2983         oss_indev_extralibs="-lossaudio"
2984         oss_outdev_extralibs="-lossaudio"
2985         ;;
2986     dragonfly)
2987         disable symver
2988         ;;
2989     freebsd)
2990         ;;
2991     bsd/os)
2992         add_extralibs -lpoll -lgnugetopt
2993         ;;
2994     darwin)
2995         gas="gas-preprocessor.pl $cc"
2996         enabled ppc && add_asflags -force_cpusubtype_ALL
2997         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
2998         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
2999         add_ldflags -Wl,-dynamic,-search_paths_first
3000         SLIBSUF=".dylib"
3001         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3002         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3003         AVSERVERLDFLAGS=-Wl,-bind_at_load
3004         objformat="macho"
3005         enabled x86_64 && objformat="macho64"
3006         enabled_any pic shared ||
3007             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3008         ;;
3009     mingw32*)
3010         if test $target_os = "mingw32ce"; then
3011             disable network
3012         else
3013             target_os=mingw32
3014         fi
3015         LIBTARGET=i386
3016         if enabled x86_64; then
3017             LIBTARGET="i386:x86-64"
3018         elif enabled arm; then
3019             LIBTARGET=arm-wince
3020         fi
3021         shlibdir_default="$bindir_default"
3022         SLIBPREF=""
3023         SLIBSUF=".dll"
3024         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3025         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3026         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3027         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3028         SLIB_INSTALL_LINKS=
3029         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3030         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3031         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3032         objformat="win32"
3033         dlltool="${cross_prefix}dlltool"
3034         ranlib=:
3035         enable dos_paths
3036         ;;
3037     win32|win64)
3038         if enabled shared; then
3039             # Link to the import library instead of the normal static library
3040             # for shared libs.
3041             LD_LIB='%.lib'
3042             # Cannot build shared and static libraries at the same time with
3043             # MSVC.
3044             disable static
3045         fi
3046         shlibdir_default="$bindir_default"
3047         SLIBPREF=""
3048         SLIBSUF=".dll"
3049         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3050         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3051         SLIB_CREATE_DEF_CMD='makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3052         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3053         SLIB_INSTALL_LINKS=
3054         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3055         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3056         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3057         objformat="win32"
3058         ranlib=:
3059         enable dos_paths
3060         ;;
3061     cygwin*)
3062         target_os=cygwin
3063         shlibdir_default="$bindir_default"
3064         SLIBPREF="cyg"
3065         SLIBSUF=".dll"
3066         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3067         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3068         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3069         SLIB_INSTALL_LINKS=
3070         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3071         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3072         objformat="win32"
3073         enable dos_paths
3074         ;;
3075     *-dos|freedos|opendos)
3076         network_extralibs="-lsocket"
3077         objformat="coff"
3078         enable dos_paths
3079         add_cppflags -U__STRICT_ANSI__
3080         ;;
3081     linux)
3082         enable dv1394
3083         ;;
3084     irix*)
3085         target_os=irix
3086         ranlib="echo ignoring ranlib"
3087         ;;
3088     os/2*)
3089         ln_s="cp -f"
3090         objformat="aout"
3091         add_cppflags -D_GNU_SOURCE
3092         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3093         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3094         AVSERVERLDFLAGS=""
3095         LIBSUF="_s.a"
3096         SLIBPREF=""
3097         SLIBSUF=".dll"
3098         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3099         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3100         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3101             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3102             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3103             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3104             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3105             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3106         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3107             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3108         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3109         enable dos_paths
3110         ;;
3111     gnu/kfreebsd)
3112         add_cppflags -D_BSD_SOURCE
3113         ;;
3114     gnu)
3115         ;;
3116     qnx)
3117         add_cppflags -D_QNX_SOURCE
3118         network_extralibs="-lsocket"
3119         ;;
3120     symbian)
3121         SLIBSUF=".dll"
3122         enable dos_paths
3123         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3124         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3125         add_ldflags -Wl,--target1-abs,--no-undefined \
3126                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3127                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3128         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3129                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3130                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3131         ;;
3132     osf1)
3133         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3134         AVSERVERLDFLAGS=
3135         ;;
3136     minix)
3137         ;;
3138     plan9)
3139         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3140                      -D_REENTRANT_SOURCE        \
3141                      -D_RESEARCH_SOURCE         \
3142                      -DFD_SETSIZE=96            \
3143                      -DHAVE_SOCK_OPTS
3144         add_compat strtod.o strtod=avpriv_strtod
3145         network_extralibs='-lbsd'
3146         exeobjs=compat/plan9/main.o
3147         disable avserver
3148         cp_f='cp'
3149         ;;
3150     none)
3151         ;;
3152     *)
3153         die "Unknown OS '$target_os'."
3154         ;;
3155 esac
3156
3157 # determine libc flavour
3158
3159 # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3160 if check_cpp_condition features.h "defined __UCLIBC__"; then
3161     libc_type=uclibc
3162     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3163 elif check_cpp_condition features.h "defined __GLIBC__"; then
3164     libc_type=glibc
3165     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3166 # MinGW headers can be installed on Cygwin, so check for newlib first.
3167 elif check_cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3168     libc_type=newlib
3169     add_cppflags -U__STRICT_ANSI__
3170 elif check_header _mingw.h; then
3171     libc_type=mingw
3172     check_cpp_condition _mingw.h \
3173         "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) || \
3174             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3175         die "ERROR: MinGW runtime version must be >= 3.15."
3176     add_cppflags -U__STRICT_ANSI__
3177 elif check_func_headers stdlib.h _get_doserrno; then
3178     libc_type=msvcrt
3179     add_compat strtod.o strtod=avpriv_strtod
3180     add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3181                                  _snprintf=avpriv_snprintf  \
3182                                  vsnprintf=avpriv_vsnprintf
3183 elif check_cpp_condition stddef.h "defined __KLIBC__"; then
3184     libc_type=klibc
3185 fi
3186
3187 test -n "$libc_type" && enable $libc_type
3188
3189 # hacks for compiler/libc/os combinations
3190
3191 if enabled_all tms470 glibc; then
3192     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3193     add_cppflags -D__USER_LABEL_PREFIX__=
3194     add_cppflags -D__builtin_memset=memset
3195     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3196     add_cflags   -pds=48    # incompatible redefinition of macro
3197 fi
3198
3199 if enabled_all ccc glibc; then
3200     add_ldflags -Wl,-z,now  # calls to libots crash without this
3201 fi
3202
3203 esc(){
3204     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3205 }
3206
3207 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3208
3209 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable pic
3210
3211 set_default $PATHS_LIST
3212 set_default nm
3213
3214 # we need to build at least one lib type
3215 if ! enabled_any static shared; then
3216     cat <<EOF
3217 At least one library type must be built.
3218 Specify --enable-static to build the static libraries or --enable-shared to
3219 build the shared libraries as well. To only build the shared libraries specify
3220 --disable-static in addition to --enable-shared.
3221 EOF
3222     exit 1;
3223 fi
3224
3225 die_license_disabled() {
3226     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3227 }
3228
3229 die_license_disabled gpl libcdio
3230 die_license_disabled gpl libx264
3231 die_license_disabled gpl libxavs
3232 die_license_disabled gpl libxvid
3233 die_license_disabled gpl x11grab
3234
3235 die_license_disabled nonfree libfaac
3236 die_license_disabled nonfree libfdk_aac
3237 die_license_disabled nonfree openssl
3238
3239 die_license_disabled version3 libopencore_amrnb
3240 die_license_disabled version3 libopencore_amrwb
3241 die_license_disabled version3 libvo_aacenc
3242 die_license_disabled version3 libvo_amrwbenc
3243
3244 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3245
3246 disabled optimizations || check_cflags -fomit-frame-pointer
3247
3248 enable_pic() {
3249     enable pic
3250     add_cppflags -DPIC
3251     add_cflags   -fPIC
3252     add_asflags  -fPIC
3253 }
3254
3255 enabled pic && enable_pic
3256
3257 check_cc <<EOF || die "Symbol mangling check failed."
3258 int ff_extern;
3259 EOF
3260 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3261 extern_prefix=${sym%%ff_extern*}
3262
3263 check_cc <<EOF && enable_weak inline_asm
3264 void foo(void) { __asm__ volatile ("" ::); }
3265 EOF
3266
3267 _restrict=
3268 for restrict_keyword in restrict __restrict__ __restrict; do
3269     check_cc <<EOF && _restrict=$restrict_keyword && break
3270 void foo(char * $restrict_keyword p);
3271 EOF
3272 done
3273
3274 check_cc <<EOF && enable attribute_packed
3275 struct { int x; } __attribute__((packed)) x;
3276 EOF
3277
3278 check_cc <<EOF && enable attribute_may_alias
3279 union { int x; } __attribute__((may_alias)) x;
3280 EOF
3281
3282 check_cc <<EOF || die "endian test failed"
3283 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3284 EOF
3285 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3286
3287 if enabled alpha; then
3288
3289     check_cflags -mieee
3290
3291 elif enabled arm; then
3292
3293     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3294     enabled thumb && check_cflags -mthumb || check_cflags -marm
3295     nogas=die
3296
3297     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3298         enable vfp_args
3299     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3300         case "${cross_prefix:-$cc}" in
3301             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3302             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3303 __asm__ (".eabi_attribute 28, 1");
3304 int main(void) { return 0; }
3305 EOF
3306         esac
3307         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3308     fi
3309
3310     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3311     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3312     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3313     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3314     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3315     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3316
3317     [ $target_os = linux ] ||
3318         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3319             $ARCH_EXT_LIST_ARM
3320
3321     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3322     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3323
3324     enabled_all armv6t2 shared !pic && enable_pic
3325
3326 elif enabled mips; then
3327
3328     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3329
3330 elif enabled parisc; then
3331
3332     if enabled gcc; then
3333         case $($cc -dumpversion) in
3334             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3335         esac
3336     fi
3337
3338 elif enabled ppc; then
3339
3340     enable local_aligned_8 local_aligned_16
3341
3342     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3343     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3344     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3345     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3346
3347     # AltiVec flags: The FSF version of GCC differs from the Apple version
3348     if enabled altivec; then
3349         nogas=warn
3350         check_cflags -maltivec -mabi=altivec &&
3351         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3352         check_cflags -faltivec
3353
3354         # check if our compiler supports Motorola AltiVec C API
3355         check_cc <<EOF || disable altivec
3356 $inc_altivec_h
3357 int main(void) {
3358     vector signed int v1 = (vector signed int) { 0 };
3359     vector signed int v2 = (vector signed int) { 1 };
3360     v1 = vec_add(v1, v2);
3361     return 0;
3362 }
3363 EOF
3364
3365         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3366     fi
3367
3368 elif enabled sparc; then
3369
3370     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3371
3372 elif enabled x86; then
3373
3374     check_builtin rdtsc    intrin.h   "__rdtsc()"
3375     check_builtin mm_empty mmintrin.h "_mm_empty()"
3376
3377     enable local_aligned_8 local_aligned_16
3378
3379     # check whether EBP is available on x86
3380     # As 'i' is stored on the stack, this program will crash
3381     # if the base pointer is used to access it because the
3382     # base pointer is cleared in the inline assembly code.
3383     check_exec_crash <<EOF && enable ebp_available
3384 volatile int i=0;
3385 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3386 return i;
3387 EOF
3388
3389     # check whether EBX is available on x86
3390     check_inline_asm ebx_available '""::"b"(0)' &&
3391         check_inline_asm ebx_available '"":::"%ebx"'
3392
3393     # check whether xmm clobbers are supported
3394     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3395
3396     # check whether binutils is new enough to compile SSSE3/MMXEXT
3397     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3398     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3399
3400     if ! disabled_any asm mmx yasm; then
3401         if check_cmd $yasmexe --version; then
3402             enabled x86_64 && yasm_extra="-m amd64"
3403             yasm_debug="-g dwarf2"
3404         elif check_cmd nasm -v; then
3405             yasmexe=nasm
3406             yasm_debug="-g -F dwarf"
3407             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3408         fi
3409
3410         YASMFLAGS="-f $objformat $yasm_extra"
3411         enabled pic               && append YASMFLAGS "-DPIC"
3412         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3413         case "$objformat" in
3414             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3415         esac
3416
3417         check_yasm "vextractf128 xmm0, ymm0, 0" && enable yasm ||
3418             die "yasm not found, use --disable-yasm for a crippled build"
3419         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3420         check_yasm "CPU amdnop" && enable cpunop
3421     fi
3422
3423     case "$cpu" in
3424         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3425             disable fast_clz
3426         ;;
3427     esac
3428
3429 fi
3430
3431 if enabled asm; then
3432     as=${gas:=$as}
3433     check_as <<EOF && enable gnu_as || \
3434         $nogas "GNU assembler not found, install gas-preprocessor"
3435 .macro m n
3436 \n: .int 0
3437 .endm
3438 m x
3439 EOF
3440 fi
3441
3442 check_ldflags -Wl,--as-needed
3443
3444 if check_func dlopen; then
3445     ldl=
3446 elif check_func dlopen -ldl; then
3447     ldl=-ldl
3448 fi
3449
3450 if ! disabled network; then
3451     check_type "sys/types.h sys/socket.h" socklen_t
3452     check_type netdb.h "struct addrinfo"
3453     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3454     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3455     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3456     check_type netinet/in.h "struct sockaddr_in6"
3457     check_type poll.h "struct pollfd"
3458     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3459     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3460     check_type netinet/sctp.h "struct sctp_event_subscribe"
3461     check_func getaddrinfo $network_extralibs
3462     check_func getservbyport $network_extralibs
3463     # Prefer arpa/inet.h over winsock2
3464     if check_header arpa/inet.h ; then
3465         check_func closesocket
3466     elif check_header winsock2.h ; then
3467         check_func_headers winsock2.h closesocket -lws2 &&
3468             network_extralibs="-lws2" ||
3469         { check_func_headers winsock2.h closesocket -lws2_32 &&
3470             network_extralibs="-lws2_32"; }
3471         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3472         check_type ws2tcpip.h socklen_t
3473         check_type ws2tcpip.h "struct addrinfo"
3474         check_type ws2tcpip.h "struct group_source_req"
3475         check_type ws2tcpip.h "struct ip_mreq_source"
3476         check_type ws2tcpip.h "struct ipv6_mreq"
3477         check_type winsock2.h "struct pollfd"
3478         check_type ws2tcpip.h "struct sockaddr_in6"
3479         check_type ws2tcpip.h "struct sockaddr_storage"
3480         check_struct winsock2.h "struct sockaddr" sa_len
3481     else
3482         disable network
3483     fi
3484 fi
3485
3486 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3487 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3488
3489 check_func  fcntl
3490 check_func  fork
3491 check_func  gethrtime
3492 check_func  getopt
3493 check_func  getrusage
3494 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
3495 check_func  gettimeofday
3496 check_func  inet_aton $network_extralibs
3497 check_func  isatty
3498 check_func  localtime_r
3499 check_func  ${malloc_prefix}memalign            && enable memalign
3500 check_func  mkstemp
3501 check_func  mmap
3502 check_func  mprotect
3503 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3504 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3505 check_func  setrlimit
3506 check_func  strerror_r
3507 check_func  strptime
3508 check_func  strtok_r
3509 check_func  sched_getaffinity
3510 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
3511 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
3512 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
3513 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
3514 check_func  sysconf
3515 check_func  sysctl
3516 check_func  usleep
3517 check_func_headers io.h setmode
3518 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
3519 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
3520 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
3521 check_func_headers windows.h GetProcessAffinityMask
3522 check_func_headers windows.h GetProcessTimes
3523 check_func_headers windows.h GetSystemTimeAsFileTime
3524 check_func_headers windows.h MapViewOfFile
3525 check_func_headers windows.h SetConsoleTextAttribute
3526 check_func_headers windows.h Sleep
3527 check_func_headers windows.h VirtualAlloc
3528
3529 check_header direct.h
3530 check_header dlfcn.h
3531 check_header dxva.h
3532 check_header dxva2api.h
3533 check_header io.h
3534 check_header malloc.h
3535 check_header poll.h
3536 check_header sys/mman.h
3537 check_header sys/param.h
3538 check_header sys/resource.h
3539 check_header sys/select.h
3540 check_header sys/time.h
3541 check_header unistd.h
3542 check_header vdpau/vdpau.h
3543 check_header vdpau/vdpau_x11.h
3544 check_header VideoDecodeAcceleration/VDADecoder.h
3545 check_header windows.h
3546 check_header X11/extensions/XvMClib.h
3547
3548 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
3549 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
3550
3551 if ! disabled w32threads && ! enabled pthreads; then
3552     check_func_headers "windows.h process.h" _beginthreadex && enable w32threads
3553 fi
3554
3555 # check for some common methods of building with pthread support
3556 # do this before the optional library checks as some of them require pthreads
3557 if ! disabled pthreads && ! enabled w32threads; then
3558     enable pthreads
3559     if check_func pthread_create; then
3560         :
3561     elif check_func pthread_create -pthread; then
3562         add_cflags -pthread
3563         add_extralibs -pthread
3564     elif check_func pthread_create -pthreads; then
3565         add_cflags -pthreads
3566         add_extralibs -pthreads
3567     elif check_func pthread_create -lpthreadGC2; then
3568         add_extralibs -lpthreadGC2
3569     elif ! check_lib pthread.h pthread_create -lpthread; then
3570         disable pthreads
3571     fi
3572 fi
3573
3574 for thread in $THREADS_LIST; do
3575     if enabled $thread; then
3576         test -n "$thread_type" &&
3577             die "ERROR: Only one thread type must be selected." ||
3578             thread_type="$thread"
3579     fi
3580 done
3581
3582 enabled sync_val_compare_and_swap && enable atomics_gcc
3583 enabled machine_rw_barrier && enabled atomic_cas_ptr && enable atomics_suncc
3584 enabled MemoryBarrier && enable atomics_win32
3585
3586 check_lib math.h sin -lm && LIBM="-lm"
3587 enabled vaapi && require vaapi va/va.h vaInitialize -lva
3588
3589 atan2f_args=2
3590 ldexpf_args=2
3591 powf_args=2
3592
3593 for func in $MATH_FUNCS; do
3594     eval check_mathfunc $func \${${func}_args:-1}
3595 done
3596
3597 # these are off by default, so fail if requested and not available
3598 enabled avisynth   && require2 vfw32 "windows.h vfw.h" AVIFileInit -lavifil32
3599 enabled frei0r     && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
3600 enabled gnutls     && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
3601 enabled libfaac    && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
3602 enabled libfdk_aac && require  libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
3603 enabled libfreetype && require_pkg_config freetype2 "ft2build.h freetype/freetype.h" FT_Init_FreeType
3604 enabled libgsm     && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
3605                             check_lib "${gsm_hdr}" gsm_create -lgsm && break;
3606                         done || die "ERROR: libgsm not found"; }
3607 enabled libilbc    && require  libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
3608 enabled libmp3lame && require  "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
3609 enabled libopencore_amrnb  && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
3610 enabled libopencore_amrwb  && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
3611 enabled libopencv  && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
3612 enabled libopenjpeg && require libopenjpeg openjpeg.h opj_version -lopenjpeg
3613 enabled libopus    && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
3614 enabled libpulse && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
3615 enabled librtmp    && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
3616 enabled libschroedinger && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
3617 enabled libspeex   && require  libspeex speex/speex.h speex_decoder_init -lspeex
3618 enabled libtheora  && require  libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
3619 enabled libvo_aacenc && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
3620 enabled libvo_amrwbenc && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
3621 enabled libvorbis  && require  libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
3622 enabled libvpx     && {
3623     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
3624                                 die "ERROR: libvpx decoder version must be >=0.9.1"; }
3625     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
3626                                 die "ERROR: libvpx encoder version must be >=0.9.6"; }
3627     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder;  }
3628     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
3629 enabled libx264    && require  libx264 x264.h x264_encoder_encode -lx264 &&
3630                       { check_cpp_condition x264.h "X264_BUILD >= 118" ||
3631                         die "ERROR: libx264 version must be >= 0.118."; }
3632 enabled libxavs    && require  libxavs xavs.h xavs_encoder_encode -lxavs
3633 enabled libxvid    && require  libxvid xvid.h xvid_global -lxvidcore
3634 enabled openssl    && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
3635                         check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
3636                         check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
3637                         die "ERROR: openssl not found"; }
3638
3639 if enabled gnutls; then
3640     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
3641     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
3642 fi
3643
3644 # libdc1394 check
3645 if enabled libdc1394; then
3646     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
3647         enable libdc1394_2; } ||
3648     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
3649         enable libdc1394_1; } ||
3650     die "ERROR: No version of libdc1394 found "
3651 fi
3652
3653 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
3654     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
3655     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
3656     enable sdl
3657 fi
3658
3659 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
3660
3661 check_header linux/fb.h
3662 check_header linux/videodev2.h
3663 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
3664
3665 check_header sys/videoio.h
3666
3667 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
3668 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
3669 # w32api 3.12 had it defined wrong
3670 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
3671
3672 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
3673 { check_header dev/bktr/ioctl_meteor.h &&
3674   check_header dev/bktr/ioctl_bt848.h; } ||
3675 { check_header machine/ioctl_meteor.h &&
3676   check_header machine/ioctl_bt848.h; } ||
3677 { check_header dev/video/meteor/ioctl_meteor.h &&
3678   check_header dev/video/bktr/ioctl_bt848.h; } ||
3679 check_header dev/ic/bt8xx.h
3680
3681 check_header sndio.h
3682 check_header sys/soundcard.h
3683 check_header soundcard.h
3684
3685 enabled_any alsa_indev alsa_outdev && check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
3686
3687 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
3688     check_func jack_port_get_latency_range -ljack
3689
3690 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
3691
3692 if enabled libcdio; then
3693     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio || check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio
3694 fi
3695
3696 enabled x11grab                                           &&
3697 require X11 X11/Xlib.h XOpenDisplay -lX11                 &&
3698 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
3699 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
3700
3701 enabled vdpau &&
3702     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
3703     disable vdpau
3704
3705 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
3706
3707 # add some useful compiler flags if supported
3708 check_cflags -Wdeclaration-after-statement
3709 check_cflags -Wall
3710 check_cflags -Wno-parentheses
3711 check_cflags -Wno-switch
3712 check_cflags -Wno-format-zero-length
3713 check_cflags -Wdisabled-optimization
3714 check_cflags -Wpointer-arith
3715 check_cflags -Wredundant-decls
3716 check_cflags -Wno-pointer-sign
3717 check_cflags -Wcast-qual
3718 check_cflags -Wwrite-strings
3719 check_cflags -Wtype-limits
3720 check_cflags -Wundef
3721 check_cflags -Wmissing-prototypes
3722 check_cflags -Wstrict-prototypes
3723 enabled extra_warnings && check_cflags -Winline
3724
3725 # add some linker flags
3726 check_ldflags -Wl,--warn-common
3727 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
3728 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
3729
3730 enabled xmm_clobber_test &&
3731     check_ldflags -Wl,--wrap,avcodec_open2              \
3732                   -Wl,--wrap,avcodec_decode_audio4      \
3733                   -Wl,--wrap,avcodec_decode_video2      \
3734                   -Wl,--wrap,avcodec_decode_subtitle2   \
3735                   -Wl,--wrap,avcodec_encode_audio2      \
3736                   -Wl,--wrap,avcodec_encode_video       \
3737                   -Wl,--wrap,avcodec_encode_subtitle    \
3738                   -Wl,--wrap,sws_scale ||
3739     disable xmm_clobber_test
3740
3741 echo "X{};" > $TMPV
3742 if test_ldflags -Wl,--version-script,$TMPV; then
3743     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
3744     check_cc <<EOF && enable symver_asm_label
3745 void ff_foo(void) __asm__ ("av_foo@VERSION");
3746 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
3747 EOF
3748     check_cc <<EOF && enable symver_gnu_asm
3749 __asm__(".symver ff_foo,av_foo@VERSION");
3750 void ff_foo(void) {}
3751 EOF
3752 fi
3753
3754 if [ -z "$optflags" ]; then
3755     if enabled small; then
3756         optflags=$cflags_size
3757     elif enabled optimizations; then
3758         optflags=$cflags_speed
3759     else
3760         optflags=$cflags_noopt
3761     fi
3762 fi
3763
3764 check_optflags(){
3765     check_cflags "$@"
3766     enabled lto && check_ldflags "$@"
3767 }
3768
3769
3770 if enabled lto; then
3771     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
3772     check_cflags  -flto
3773     check_ldflags -flto $cpuflags
3774 fi
3775
3776 check_optflags $optflags
3777 check_optflags -fno-math-errno
3778 check_optflags -fno-signed-zeros
3779
3780 if enabled icc; then
3781     # Just warnings, no remarks
3782     check_cflags -w1
3783     # -wd: Disable following warnings
3784     # 144, 167, 556: -Wno-pointer-sign
3785     # 1292: attribute "foo" ignored
3786     # 1419: external declaration in primary source file
3787     # 10006: ignoring unknown option -fno-signed-zeros
3788     # 10148: ignoring unknown option -Wno-parentheses
3789     # 10156: ignoring option '-W'; no argument required
3790     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
3791     # 11030: Warning unknown option --as-needed
3792     # 10156: ignoring option '-export'; no argument required
3793     check_ldflags -wd10156,11030
3794     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
3795     enable ebp_available
3796     if enabled x86_32; then
3797         icc_version=$($cc -dumpversion)
3798         test ${icc_version%%.*} -ge 11 &&
3799             check_cflags -falign-stack=maintain-16-byte ||
3800             disable aligned_stack
3801     fi
3802 elif enabled ccc; then
3803     # disable some annoying warnings
3804     add_cflags -msg_disable bitnotint
3805     add_cflags -msg_disable mixfuncvoid
3806     add_cflags -msg_disable nonstandcast
3807     add_cflags -msg_disable unsupieee
3808 elif enabled gcc; then
3809     check_optflags -fno-tree-vectorize
3810     check_cflags -Werror=implicit-function-declaration
3811     check_cflags -Werror=missing-prototypes
3812     check_cflags -Werror=return-type
3813     check_cflags -Werror=declaration-after-statement
3814     check_cflags -Werror=vla
3815 elif enabled llvm_gcc; then
3816     check_cflags -mllvm -stack-alignment=16
3817 elif enabled clang; then
3818     check_cflags -mllvm -stack-alignment=16
3819     check_cflags -Qunused-arguments
3820     check_cflags -Werror=implicit-function-declaration
3821     check_cflags -Werror=missing-prototypes
3822     check_cflags -Werror=return-type
3823 elif enabled armcc; then
3824     # 2523: use of inline assembler is deprecated
3825     add_cflags -W${armcc_opt},--diag_suppress=2523
3826     add_cflags -W${armcc_opt},--diag_suppress=1207
3827     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
3828     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
3829     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
3830     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
3831 elif enabled tms470; then
3832     add_cflags -pds=824 -pds=837
3833 elif enabled pathscale; then
3834     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
3835 elif enabled msvc; then
3836     enabled x86_32 && disable aligned_stack
3837 fi
3838
3839 case $target_os in
3840     osf1)
3841         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
3842     ;;
3843     plan9)
3844         add_cppflags -Dmain=plan9_main
3845     ;;
3846 esac
3847
3848 enabled_any $THREADS_LIST      && enable threads
3849 enabled_any $ATOMICS_LIST      && enable atomics_native
3850
3851 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
3852
3853 check_deps $CONFIG_LIST       \
3854            $CONFIG_EXTRA      \
3855            $HAVE_LIST         \
3856            $ALL_COMPONENTS    \
3857
3858 ! enabled_any memalign posix_memalign aligned_malloc &&
3859     enabled_any $need_memalign && enable memalign_hack
3860
3861 echo "install prefix            $prefix"
3862 echo "source path               $source_path"
3863 echo "C compiler                $cc"
3864 echo "ARCH                      $arch ($cpu)"
3865 if test "$build_suffix" != ""; then
3866     echo "build suffix              $build_suffix"
3867 fi
3868 if test "$extra_version" != ""; then
3869     echo "version string suffix     $extra_version"
3870 fi
3871 echo "big-endian                ${bigendian-no}"
3872 echo "runtime cpu detection     ${runtime_cpudetect-no}"
3873 if enabled x86; then
3874     echo "${yasmexe}                      ${yasm-no}"
3875     echo "MMX enabled               ${mmx-no}"
3876     echo "MMXEXT enabled            ${mmxext-no}"
3877     echo "3DNow! enabled            ${amd3dnow-no}"
3878     echo "3DNow! extended enabled   ${amd3dnowext-no}"
3879     echo "SSE enabled               ${sse-no}"
3880     echo "SSSE3 enabled             ${ssse3-no}"
3881     echo "AVX enabled               ${avx-no}"
3882     echo "FMA4 enabled              ${fma4-no}"
3883     echo "CMOV enabled              ${cmov-no}"
3884     echo "CMOV is fast              ${fast_cmov-no}"
3885     echo "EBX available             ${ebx_available-no}"
3886     echo "EBP available             ${ebp_available-no}"
3887 fi
3888 if enabled arm; then
3889     echo "ARMv5TE enabled           ${armv5te-no}"
3890     echo "ARMv6 enabled             ${armv6-no}"
3891     echo "ARMv6T2 enabled           ${armv6t2-no}"
3892     echo "VFP enabled               ${vfp-no}"
3893     echo "NEON enabled              ${neon-no}"
3894 fi
3895 if enabled ppc; then
3896     echo "AltiVec enabled           ${altivec-no}"
3897     echo "PPC 4xx optimizations     ${ppc4xx-no}"
3898     echo "dcbzl available           ${dcbzl-no}"
3899 fi
3900 if enabled sparc; then
3901     echo "VIS enabled               ${vis-no}"
3902 fi
3903 echo "debug symbols             ${debug-no}"
3904 echo "optimize for size         ${small-no}"
3905 echo "optimizations             ${optimizations-no}"
3906 echo "static                    ${static-no}"
3907 echo "shared                    ${shared-no}"
3908 echo "new filter support        ${avfilter-no}"
3909 echo "network support           ${network-no}"
3910 echo "threading support         ${thread_type-no}"
3911 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
3912 echo "SDL support               ${sdl-no}"
3913 test -n "$random_seed" &&
3914     echo "random seed               ${random_seed}"
3915 echo
3916
3917 echo "External libraries:"
3918 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
3919 echo
3920
3921 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
3922     echo "Enabled ${type}s:"
3923     eval list=\$$(toupper $type)_LIST
3924     print_enabled '_*' $list | print_3_columns
3925     echo
3926 done
3927
3928 license="LGPL version 2.1 or later"
3929 if enabled nonfree; then
3930     license="nonfree and unredistributable"
3931 elif enabled gplv3; then
3932     license="GPL version 3 or later"
3933 elif enabled lgplv3; then
3934     license="LGPL version 3 or later"
3935 elif enabled gpl; then
3936     license="GPL version 2 or later"
3937 fi
3938
3939 echo "License: $license"
3940
3941 echo "Creating config.mak and config.h..."
3942
3943 test -e Makefile || $ln_s "$source_path/Makefile" .
3944
3945 config_files="$TMPH config.mak"
3946
3947 cat > config.mak <<EOF
3948 # Automatically generated by configure - do not modify!
3949 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
3950 prefix=$prefix
3951 LIBDIR=\$(DESTDIR)$libdir
3952 SHLIBDIR=\$(DESTDIR)$shlibdir
3953 INCDIR=\$(DESTDIR)$incdir
3954 BINDIR=\$(DESTDIR)$bindir
3955 DATADIR=\$(DESTDIR)$datadir
3956 MANDIR=\$(DESTDIR)$mandir
3957 SRC_PATH=$source_path
3958 CC_IDENT=$cc_ident
3959 ARCH=$arch
3960 CC=$cc
3961 AS=$as
3962 LD=$ld
3963 DEPCC=$dep_cc
3964 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
3965 DEPAS=$as
3966 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
3967 YASM=$yasmexe
3968 DEPYASM=$yasmexe
3969 AR=$ar
3970 ARFLAGS=$arflags
3971 AR_O=$ar_o
3972 RANLIB=$ranlib
3973 LN_S=$ln_s
3974 CPPFLAGS=$CPPFLAGS
3975 CFLAGS=$CFLAGS
3976 ASFLAGS=$ASFLAGS
3977 AS_C=$AS_C
3978 AS_O=$AS_O
3979 CC_C=$CC_C
3980 CC_E=$CC_E
3981 CC_O=$CC_O
3982 LD_O=$LD_O
3983 LD_LIB=$LD_LIB
3984 LD_PATH=$LD_PATH
3985 DLLTOOL=$dlltool
3986 LDFLAGS=$LDFLAGS
3987 LDFLAGS-avserver=$AVSERVERLDFLAGS
3988 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
3989 YASMFLAGS=$YASMFLAGS
3990 BUILDSUF=$build_suffix
3991 FULLNAME=$FULLNAME
3992 LIBPREF=$LIBPREF
3993 LIBSUF=$LIBSUF
3994 LIBNAME=$LIBNAME
3995 SLIBPREF=$SLIBPREF
3996 SLIBSUF=$SLIBSUF
3997 EXESUF=$EXESUF
3998 EXTRA_VERSION=$extra_version
3999 CCDEP=$CCDEP
4000 CCDEP_FLAGS=$CCDEP_FLAGS
4001 ASDEP=$ASDEP
4002 ASDEP_FLAGS=$ASDEP_FLAGS
4003 CC_DEPFLAGS=$CC_DEPFLAGS
4004 AS_DEPFLAGS=$AS_DEPFLAGS
4005 HOSTCC=$host_cc
4006 HOSTLD=$host_ld
4007 HOSTCFLAGS=$host_cflags
4008 HOSTCPPFLAGS=$host_cppflags
4009 HOSTEXESUF=$HOSTEXESUF
4010 HOSTLDFLAGS=$host_ldflags
4011 HOSTLIBS=$host_libs
4012 DEPHOSTCC=$host_cc
4013 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4014 HOSTCCDEP=$HOSTCCDEP
4015 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4016 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4017 HOSTCC_C=$HOSTCC_C
4018 HOSTCC_O=$HOSTCC_O
4019 HOSTLD_O=$HOSTLD_O
4020 TARGET_EXEC=$target_exec
4021 TARGET_PATH=$target_path
4022 LIBS-avplay=$sdl_libs
4023 CFLAGS-avplay=$sdl_cflags
4024 ZLIB=$($ldflags_filter -lz)
4025 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4026 EXTRALIBS=$extralibs
4027 COMPAT_OBJS=$compat_objs
4028 EXEOBJS=$exeobjs
4029 INSTALL=install
4030 LIBTARGET=${LIBTARGET}
4031 SLIBNAME=${SLIBNAME}
4032 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4033 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4034 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4035 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4036 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4037 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4038 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4039 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4040 SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
4041 EOF
4042
4043 get_version(){
4044     lcname=lib${1}
4045     name=$(toupper $lcname)
4046     file=$source_path/$lcname/version.h
4047     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4048     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4049     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4050     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4051     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
4052 }
4053
4054 map 'get_version $v' $LIBRARY_LIST
4055
4056 cat > $TMPH <<EOF
4057 /* Automatically generated by configure - do not modify! */
4058 #ifndef LIBAV_CONFIG_H
4059 #define LIBAV_CONFIG_H
4060 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
4061 #define LIBAV_LICENSE "$(c_escape $license)"
4062 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4063 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4064 #define restrict $_restrict
4065 #define EXTERN_PREFIX "${extern_prefix}"
4066 #define EXTERN_ASM ${extern_prefix}
4067 #define SLIBSUF "$SLIBSUF"
4068 EOF
4069
4070 test -n "$malloc_prefix" &&
4071     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4072
4073 if enabled yasm; then
4074     append config_files $TMPASM
4075     printf '' >$TMPASM
4076 fi
4077
4078 print_config ARCH_   "$config_files" $ARCH_LIST
4079 print_config HAVE_   "$config_files" $HAVE_LIST
4080 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4081                                      $CONFIG_EXTRA      \
4082                                      $ALL_COMPONENTS    \
4083
4084 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
4085
4086 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4087 cp_if_changed $TMPH config.h
4088 touch .config
4089
4090 enabled yasm && cp_if_changed $TMPASM config.asm
4091
4092 cat > $TMPH <<EOF
4093 /* Generated by ffconf */
4094 #ifndef AVUTIL_AVCONFIG_H
4095 #define AVUTIL_AVCONFIG_H
4096 EOF
4097
4098 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4099
4100 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4101
4102 cp_if_changed $TMPH libavutil/avconfig.h
4103
4104 test -n "$WARNINGS" && printf "\n$WARNINGS"
4105
4106 # build pkg-config files
4107
4108 pkgconfig_generate(){
4109     name=$1
4110     shortname=${name#lib}${build_suffix}
4111     comment=$2
4112     version=$3
4113     libs=$4
4114     requires=$5
4115     enabled ${name#lib} || return 0
4116     mkdir -p $name
4117     cat <<EOF > $name/$name.pc
4118 prefix=$prefix
4119 exec_prefix=\${prefix}
4120 libdir=$libdir
4121 includedir=$incdir
4122
4123 Name: $name
4124 Description: $comment
4125 Version: $version
4126 Requires: $(enabled shared || echo $requires)
4127 Requires.private: $(enabled shared && echo $requires)
4128 Conflicts:
4129 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4130 Libs.private: $(enabled shared && echo $libs)
4131 Cflags: -I\${includedir}
4132 EOF
4133     cat <<EOF > $name/$name-uninstalled.pc
4134 prefix=
4135 exec_prefix=
4136 libdir=\${pcfiledir}
4137 includedir=${source_path}
4138
4139 Name: $name
4140 Description: $comment
4141 Version: $version
4142 Requires: $requires
4143 Conflicts:
4144 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
4145 Cflags: -I\${includedir}
4146 EOF
4147 }
4148
4149 pkgconfig_generate libavutil "Libav utility library" "$LIBAVUTIL_VERSION" "$LIBM"
4150 pkgconfig_generate libavcodec "Libav codec library" "$LIBAVCODEC_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4151 pkgconfig_generate libavformat "Libav container format library" "$LIBAVFORMAT_VERSION" "$extralibs" "libavcodec = $LIBAVCODEC_VERSION"
4152 pkgconfig_generate libavdevice "Libav device handling library" "$LIBAVDEVICE_VERSION" "$extralibs" "libavformat = $LIBAVFORMAT_VERSION"
4153 pkgconfig_generate libavfilter "Libav video filtering library" "$LIBAVFILTER_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4154 pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4155 pkgconfig_generate libswscale "Libav image rescaling library" "$LIBSWSCALE_VERSION" "$LIBM" "libavutil = $LIBAVUTIL_VERSION"