75c3264ba7e2e0e671851882e90565c6d843856d
[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_suncc
1128     atomics_win32
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='$ldl'
1883 hqdn3d_filter_deps="gpl"
1884 interlace_filter_deps="gpl"
1885 resample_filter_deps="avresample"
1886 ocv_filter_deps="libopencv"
1887 scale_filter_deps="swscale"
1888 yadif_filter_deps="gpl"
1889
1890 # libraries
1891 avcodec_deps="avutil"
1892 avdevice_deps="avutil avcodec avformat"
1893 avfilter_deps="avutil"
1894 avformat_deps="avutil avcodec"
1895 avresample_deps="avutil"
1896 swscale_deps="avutil"
1897
1898 # programs
1899 avconv_deps="avcodec avfilter avformat avresample swscale"
1900 avconv_select="aformat_filter anull_filter asyncts_filter format_filter
1901                fps_filter null_filter resample_filter scale_filter
1902                setpts_filter"
1903 avplay_deps="avcodec avformat avresample swscale sdl"
1904 avplay_select="rdft"
1905 avprobe_deps="avcodec avformat"
1906 avserver_deps="avformat ffm_muxer fork rtp_protocol rtsp_demuxer !shared"
1907 avserver_extralibs='$ldl'
1908
1909 doc_deps="texi2html"
1910
1911 # default parameters
1912
1913 logfile="config.log"
1914
1915 # installation paths
1916 prefix_default="/usr/local"
1917 bindir_default='${prefix}/bin'
1918 datadir_default='${prefix}/share/avconv'
1919 incdir_default='${prefix}/include'
1920 libdir_default='${prefix}/lib'
1921 mandir_default='${prefix}/share/man'
1922 shlibdir_default="$libdir_default"
1923
1924 # toolchain
1925 ar_default="ar"
1926 cc_default="gcc"
1927 host_cc_default="gcc"
1928 cp_f="cp -f"
1929 ln_s="ln -s -f"
1930 nm_default="nm -g"
1931 objformat="elf"
1932 pkg_config_default=pkg-config
1933 ranlib="ranlib"
1934 yasmexe="yasm"
1935
1936 nogas=":"
1937
1938 # machine
1939 arch_default=$(uname -m)
1940 cpu="generic"
1941
1942 # OS
1943 target_os_default=$(tolower $(uname -s))
1944 host_os=$target_os_default
1945
1946 # configurable options
1947 enable $LIBRARY_LIST $PROGRAM_LIST
1948
1949 enable asm
1950 enable debug
1951 enable doc
1952 enable optimizations
1953 enable safe_bitstream_reader
1954 enable static
1955 enable swscale_alpha
1956
1957 # By default, enable only those hwaccels that have no external dependencies.
1958 enable dxva2 vdpau
1959
1960 # build settings
1961 SHFLAGS='-shared -Wl,-soname,$$(@F)'
1962 AVSERVERLDFLAGS=-Wl,-E
1963 LIBPREF="lib"
1964 LIBSUF=".a"
1965 FULLNAME='$(NAME)$(BUILDSUF)'
1966 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
1967 SLIBPREF="lib"
1968 SLIBSUF=".so"
1969 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
1970 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
1971 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
1972 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
1973 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
1974 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
1975
1976 asflags_filter=echo
1977 cflags_filter=echo
1978 ldflags_filter=echo
1979
1980 AS_C='-c'
1981 AS_O='-o $@'
1982 CC_C='-c'
1983 CC_E='-E -o $@'
1984 CC_O='-o $@'
1985 LD_O='-o $@'
1986 LD_LIB='-l%'
1987 LD_PATH='-L'
1988 HOSTCC_C='-c'
1989 HOSTCC_O='-o $@'
1990 HOSTLD_O='-o $@'
1991
1992 host_cflags='-O3 -g'
1993 host_cppflags='-D_ISOC99_SOURCE -D_XOPEN_SOURCE=600'
1994 host_libs='-lm'
1995 host_cflags_filter=echo
1996 host_ldflags_filter=echo
1997
1998 target_path='$(CURDIR)'
1999
2000 # since the object filename is not given with the -MM flag, the compiler
2001 # is only able to print the basename, and we must add the path ourselves
2002 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2003 DEPFLAGS='-MM'
2004
2005 # find source path
2006 if test -f configure; then
2007     source_path=.
2008 else
2009     source_path=$(cd $(dirname "$0"); pwd)
2010     echo "$source_path" | grep -q '[[:blank:]]' &&
2011         die "Out of tree builds are impossible with whitespace in source path."
2012     test -e "$source_path/config.h" &&
2013         die "Out of tree builds are impossible with config.h in source dir."
2014 fi
2015
2016 for v in "$@"; do
2017     r=${v#*=}
2018     l=${v%"$r"}
2019     r=$(sh_quote "$r")
2020     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2021 done
2022
2023 find_things(){
2024     thing=$1
2025     pattern=$2
2026     file=$source_path/$3
2027     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2028 }
2029
2030 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2031 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2032 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2033 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2034 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2035 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2036 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2037 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2038 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2039 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2040 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2041
2042 ALL_COMPONENTS="
2043     $BSF_LIST
2044     $DECODER_LIST
2045     $DEMUXER_LIST
2046     $ENCODER_LIST
2047     $FILTER_LIST
2048     $HWACCEL_LIST
2049     $INDEV_LIST
2050     $MUXER_LIST
2051     $OUTDEV_LIST
2052     $PARSER_LIST
2053     $PROTOCOL_LIST
2054 "
2055
2056 for n in $COMPONENT_LIST; do
2057     v=$(toupper ${n%s})_LIST
2058     eval enable \$$v
2059     eval ${n}_if_any="\$$v"
2060 done
2061
2062 enable $ARCH_EXT_LIST
2063
2064 die_unknown(){
2065     echo "Unknown option \"$1\"."
2066     echo "See $0 --help for available options."
2067     exit 1
2068 }
2069
2070 print_3_columns() {
2071     cat | tr ' ' '\n' | sort | pr -r -3 -t
2072 }
2073
2074 show_list() {
2075     suffix=_$1
2076     shift
2077     echo $* | sed s/$suffix//g | print_3_columns
2078     exit 0
2079 }
2080
2081 rand_list(){
2082     IFS=', '
2083     set -- $*
2084     unset IFS
2085     for thing; do
2086         comp=${thing%:*}
2087         prob=${thing#$comp}
2088         prob=${prob#:}
2089         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2090         echo "prob ${prob:-0.5}"
2091         printf '%s\n' $comp
2092     done
2093 }
2094
2095 do_random(){
2096     action=$1
2097     shift
2098     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2099     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2100 }
2101
2102 for opt do
2103     optval="${opt#*=}"
2104     case "$opt" in
2105         --extra-ldflags=*)
2106             add_ldflags $optval
2107         ;;
2108         --extra-libs=*)
2109             add_extralibs $optval
2110         ;;
2111         --disable-devices)
2112             disable $INDEV_LIST $OUTDEV_LIST
2113         ;;
2114         --enable-debug=*)
2115             debuglevel="$optval"
2116         ;;
2117         --disable-programs)
2118             disable $PROGRAM_LIST
2119         ;;
2120         --disable-everything)
2121             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2122         ;;
2123         --disable-all)
2124             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2125             disable $LIBRARY_LIST $PROGRAM_LIST doc
2126         ;;
2127         --enable-random|--disable-random)
2128             action=${opt%%-random}
2129             do_random ${action#--} $COMPONENT_LIST
2130         ;;
2131         --enable-random=*|--disable-random=*)
2132             action=${opt%%-random=*}
2133             do_random ${action#--} $optval
2134         ;;
2135         --enable-*=*|--disable-*=*)
2136             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2137             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2138             eval list=\$$(toupper $thing)_LIST
2139             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2140             $action $(filter "$name" $list)
2141         ;;
2142         --enable-?*|--disable-?*)
2143             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2144             if is_in $option $COMPONENT_LIST; then
2145                 test $action = disable && action=unset
2146                 eval $action \$$(toupper ${option%s})_LIST
2147             elif is_in $option $CMDLINE_SELECT; then
2148                 $action $option
2149             else
2150                 die_unknown $opt
2151             fi
2152         ;;
2153         --list-*)
2154             NAME="${opt#--list-}"
2155             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2156             NAME=${NAME%s}
2157             eval show_list $NAME \$$(toupper $NAME)_LIST
2158         ;;
2159         --help|-h) show_help
2160         ;;
2161         *)
2162             optname="${opt%%=*}"
2163             optname="${optname#--}"
2164             optname=$(echo "$optname" | sed 's/-/_/g')
2165             if is_in $optname $CMDLINE_SET; then
2166                 eval $optname='$optval'
2167             elif is_in $optname $CMDLINE_APPEND; then
2168                 append $optname "$optval"
2169             else
2170                 die_unknown $opt
2171             fi
2172         ;;
2173     esac
2174 done
2175
2176 disabled logging && logfile=/dev/null
2177
2178 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2179 set >> $logfile
2180
2181 test -n "$cross_prefix" && enable cross_compile
2182
2183 if enabled cross_compile; then
2184     test -n "$arch" && test -n "$target_os" ||
2185         die "Must specify target arch and OS when cross-compiling"
2186 fi
2187
2188 ar_default="${cross_prefix}${ar_default}"
2189 cc_default="${cross_prefix}${cc_default}"
2190 nm_default="${cross_prefix}${nm_default}"
2191 pkg_config_default="${cross_prefix}${pkg_config_default}"
2192 ranlib="${cross_prefix}${ranlib}"
2193
2194 sysinclude_default="${sysroot}/usr/include"
2195
2196 case "$toolchain" in
2197     clang-asan)
2198         cc_default="clang"
2199         add_cflags  -fsanitize=address
2200         add_ldflags -fsanitize=address
2201     ;;
2202     clang-tsan)
2203         cc_default="clang"
2204         add_cflags  -fsanitize=thread -pie
2205         add_ldflags -fsanitize=thread -pie
2206     ;;
2207     msvc)
2208         cc_default="c99wrap cl"
2209         ld_default="c99wrap link"
2210         nm_default="dumpbin -symbols"
2211         ar_default="lib"
2212         target_os_default="win32"
2213     ;;
2214     gcov)
2215         add_cflags  -fprofile-arcs -ftest-coverage
2216         add_ldflags -fprofile-arcs -ftest-coverage
2217     ;;
2218     ?*)
2219         die "Unknown toolchain $toolchain"
2220     ;;
2221 esac
2222
2223 set_default arch cc pkg_config sysinclude target_os
2224 enabled cross_compile || host_cc_default=$cc
2225 set_default host_cc
2226
2227 if ! $pkg_config --version >/dev/null 2>&1; then
2228     warn "$pkg_config not found, library detection may fail."
2229     pkg_config=false
2230 fi
2231
2232 exesuf() {
2233     case $1 in
2234         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2235     esac
2236 }
2237
2238 EXESUF=$(exesuf $target_os)
2239 HOSTEXESUF=$(exesuf $host_os)
2240
2241 # set temporary file name
2242 : ${TMPDIR:=$TEMPDIR}
2243 : ${TMPDIR:=$TMP}
2244 : ${TMPDIR:=/tmp}
2245
2246 if ! check_cmd mktemp -u XXXXXX; then
2247     # simple replacement for missing mktemp
2248     # NOT SAFE FOR GENERAL USE
2249     mktemp(){
2250         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2251     }
2252 fi
2253
2254 tmpfile(){
2255     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2256         (set -C; exec > $tmp) 2>/dev/null ||
2257         die "Unable to create temporary file in $TMPDIR."
2258     append TMPFILES $tmp
2259     eval $1=$tmp
2260 }
2261
2262 trap 'rm -f -- $TMPFILES' EXIT
2263
2264 tmpfile TMPASM .asm
2265 tmpfile TMPC   .c
2266 tmpfile TMPE   $EXESUF
2267 tmpfile TMPH   .h
2268 tmpfile TMPO   .o
2269 tmpfile TMPS   .S
2270 tmpfile TMPSH  .sh
2271 tmpfile TMPV   .ver
2272
2273 unset -f mktemp
2274
2275 chmod +x $TMPE
2276
2277 # make sure we can execute files in $TMPDIR
2278 cat > $TMPSH 2>> $logfile <<EOF
2279 #! /bin/sh
2280 EOF
2281 chmod +x $TMPSH >> $logfile 2>&1
2282 if ! $TMPSH >> $logfile 2>&1; then
2283     cat <<EOF
2284 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2285 variable to another directory and make sure that it is not mounted noexec.
2286 EOF
2287     die "Sanity test failed."
2288 fi
2289
2290 ccc_flags(){
2291     for flag; do
2292         case $flag in
2293             -std=c99)           echo -c99                       ;;
2294             -mcpu=*)            echo -arch ${flag#*=}           ;;
2295             -mieee)             echo -ieee                      ;;
2296             -O*|-fast)          echo $flag                      ;;
2297             -fno-math-errno)    echo -assume nomath_errno       ;;
2298             -g)                 echo -g3                        ;;
2299             -Wall)              echo -msg_enable level2         ;;
2300             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2301             -Wl,*)              echo $flag                      ;;
2302             -f*|-W*)                                            ;;
2303             *)                  echo $flag                      ;;
2304         esac
2305    done
2306 }
2307
2308 msvc_flags(){
2309     for flag; do
2310         case $flag in
2311             -fomit-frame-pointer) echo -Oy ;;
2312             -g)                   echo -Z7 ;;
2313             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389 \
2314                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2315                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2316                                        -wd4996 -wd4273 ;;
2317             -std=c99)             ;;
2318             -fno-math-errno)      ;;
2319             -fno-common)          ;;
2320             -fno-signed-zeros)    ;;
2321             -fPIC)                ;;
2322             -lz)                  echo zlib.lib ;;
2323             -lavifil32)           echo vfw32.lib ;;
2324             -lavicap32)           echo vfw32.lib user32.lib ;;
2325             -l*)                  echo ${flag#-l}.lib ;;
2326             *)                    echo $flag ;;
2327         esac
2328     done
2329 }
2330
2331 pgi_flags(){
2332     for flag; do
2333         case $flag in
2334             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2335             -fomit-frame-pointer) echo -Mnoframe ;;
2336             -g)                   echo -gopt ;;
2337             *)                    echo $flag ;;
2338         esac
2339     done
2340 }
2341
2342 suncc_flags(){
2343     for flag; do
2344         case $flag in
2345             -march=*|-mcpu=*)
2346                 case "${flag#*=}" in
2347                     native)                   echo -xtarget=native       ;;
2348                     v9|niagara)               echo -xarch=sparc          ;;
2349                     ultrasparc)               echo -xarch=sparcvis       ;;
2350                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2351                     i586|pentium)             echo -xchip=pentium        ;;
2352                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2353                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2354                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2355                     pentium4*)          echo -xtarget=pentium4           ;;
2356                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2357                     *-sse3)             echo -xarch=sse3                 ;;
2358                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2359                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2360                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2361                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2362                     athlon-4|athlon-[mx]p)    echo -xarch=ssea           ;;
2363                     k8|opteron|athlon64|athlon-fx)
2364                                               echo -xarch=sse2a          ;;
2365                     athlon*)                  echo -xarch=pentium_proa   ;;
2366                 esac
2367                 ;;
2368             -std=c99)             echo -xc99              ;;
2369             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2370             -fPIC)                echo -KPIC -xcode=pic32 ;;
2371             -W*,*)                echo $flag              ;;
2372             -f*-*|-W*|-mimpure-text)                      ;;
2373             -shared)              echo -G                 ;;
2374             *)                    echo $flag              ;;
2375         esac
2376     done
2377 }
2378
2379 tms470_flags(){
2380     for flag; do
2381         case $flag in
2382             -march=*|-mcpu=*)
2383                 case "${flag#*=}" in
2384                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2385                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2386                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2387                     armv6*|arm11*)          echo -mv=6   ;;
2388                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2389                                             echo -mv=5e  ;;
2390                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2391                 esac
2392                 ;;
2393             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2394             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2395             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2396             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2397             -msoft-float)   echo --float_support=vfplib       ;;
2398             -O[0-3]|-mf=*)  echo $flag                        ;;
2399             -g)             echo -g -mn                       ;;
2400             -pds=*)         echo $flag                        ;;
2401             -D*|-I*)        echo $flag                        ;;
2402             --gcc|--abi=*)  echo $flag                        ;;
2403             -me)            echo $flag                        ;;
2404         esac
2405     done
2406 }
2407
2408 probe_cc(){
2409     pfx=$1
2410     _cc=$2
2411
2412     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2413     unset _ld_o _ldflags _ld_lib _ld_path
2414     unset _depflags _DEPCMD _DEPFLAGS
2415     _flags_filter=echo
2416
2417     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2418         _type=llvm_gcc
2419         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2420         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2421         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2422         _cflags_speed='-O3'
2423         _cflags_size='-Os'
2424     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2425         _type=gcc
2426         gcc_version=$($_cc --version | head -n1)
2427         gcc_basever=$($_cc -dumpversion)
2428         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2429         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2430         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2431         if ! $_cc -dumpversion | grep -q '^2\.'; then
2432             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2433         fi
2434         _cflags_speed='-O3'
2435         _cflags_size='-Os'
2436     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2437         _type=icc
2438         _ident=$($_cc --version | head -n1)
2439         _depflags='-MMD'
2440         _cflags_speed='-O3'
2441         _cflags_size='-Os'
2442         _cflags_noopt='-O1'
2443     elif $_cc -v 2>&1 | grep -q xlc; then
2444         _type=xlc
2445         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2446         _cflags_speed='-O5'
2447         _cflags_size='-O5 -qcompact'
2448     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2449         _type=ccc
2450         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2451         _DEPFLAGS='-M'
2452         _cflags_speed='-fast'
2453         _cflags_size='-O1'
2454         _flags_filter=ccc_flags
2455     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2456         test -d "$sysroot" || die "No valid sysroot specified."
2457         _type=armcc
2458         _ident=$($_cc --vsn | head -n1)
2459         armcc_conf="$PWD/armcc.conf"
2460         $_cc --arm_linux_configure                 \
2461              --arm_linux_config_file="$armcc_conf" \
2462              --configure_sysroot="$sysroot"        \
2463              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2464              die "Error creating armcc configuration file."
2465         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2466         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2467         as_default="${cross_prefix}gcc"
2468         _depflags='-MMD'
2469         _cflags_speed='-O3'
2470         _cflags_size='-Os'
2471     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2472         _type=tms470
2473         _ident=$($_cc -version | head -n1 | tr -s ' ')
2474         _flags='--gcc --abi=eabi -me'
2475         _cc_e='-ppl -fe=$@'
2476         _cc_o='-fe=$@'
2477         _depflags='-ppa -ppd=$(@:.o=.d)'
2478         _cflags_speed='-O3 -mf=5'
2479         _cflags_size='-O3 -mf=2'
2480         _flags_filter=tms470_flags
2481     elif $_cc -v 2>&1 | grep -q clang; then
2482         _type=clang
2483         _ident=$($_cc --version | head -n1)
2484         _depflags='-MMD'
2485         _cflags_speed='-O3'
2486         _cflags_size='-Os'
2487     elif $_cc -V 2>&1 | grep -q Sun; then
2488         _type=suncc
2489         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2490         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2491         _DEPFLAGS='-xM1 -xc99'
2492         _ldflags='-std=c99'
2493         _cflags_speed='-O5'
2494         _cflags_size='-O5 -xspace'
2495         _flags_filter=suncc_flags
2496     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2497         _type=pathscale
2498         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2499         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2500         _cflags_speed='-O2'
2501         _cflags_size='-Os'
2502         _flags_filter='filter_out -Wdisabled-optimization'
2503     elif $_cc -v 2>&1 | grep -q Open64; then
2504         _type=open64
2505         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2506         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2507         _cflags_speed='-O2'
2508         _cflags_size='-Os'
2509         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2510     elif $_cc -V 2>&1 | grep -q Portland; then
2511         _type=pgi
2512         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2513         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2514         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2515         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2516         _cflags_noopt="-O1"
2517         _flags_filter=pgi_flags
2518     elif $_cc 2>&1 | grep -q Microsoft; then
2519         _type=msvc
2520         _ident=$($cc 2>&1 | head -n1)
2521         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2522         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2523         _cflags_speed="-O2"
2524         _cflags_size="-O1"
2525         # Nonstandard output options, to avoid msys path conversion issues, relies on wrapper to remap it
2526         if $_cc 2>&1 | grep -q Linker; then
2527             _ld_o='-out $@'
2528         else
2529             _ld_o='-Fe$@'
2530         fi
2531         _cc_o='-Fo $@'
2532         _cc_e='-P -Fi $@'
2533         _flags_filter=msvc_flags
2534         _ld_lib='lib%.a'
2535         _ld_path='-libpath:'
2536         _flags='-nologo'
2537         _cflags='-D_USE_MATH_DEFINES -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2538         if [ $pfx = hostcc ]; then
2539             append _cflags -Dsnprintf=_snprintf
2540         fi
2541     fi
2542
2543     eval ${pfx}_type=\$_type
2544     eval ${pfx}_ident=\$_ident
2545 }
2546
2547 set_ccvars(){
2548     eval ${1}_C=\${_cc_c-\${${1}_C}}
2549     eval ${1}_E=\${_cc_e-\${${1}_E}}
2550     eval ${1}_O=\${_cc_o-\${${1}_O}}
2551
2552     if [ -n "$_depflags" ]; then
2553         eval ${1}_DEPFLAGS=\$_depflags
2554     else
2555         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2556         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2557         eval DEP${1}FLAGS=\$_flags
2558     fi
2559 }
2560
2561 probe_cc cc "$cc"
2562 cflags_filter=$_flags_filter
2563 cflags_speed=$_cflags_speed
2564 cflags_size=$_cflags_size
2565 cflags_noopt=$_cflags_noopt
2566 add_cflags $_flags $_cflags
2567 cc_ldflags=$_ldflags
2568 set_ccvars CC
2569
2570 probe_cc hostcc "$host_cc"
2571 host_cflags_filter=$_flags_filter
2572 add_host_cflags  $_flags $_cflags
2573 set_ccvars HOSTCC
2574
2575 test -n "$cc_type" && enable $cc_type ||
2576     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2577
2578 : ${as_default:=$cc}
2579 : ${dep_cc_default:=$cc}
2580 : ${ld_default:=$cc}
2581 : ${host_ld_default:=$host_cc}
2582 set_default ar as dep_cc ld host_ld
2583
2584 probe_cc as "$as"
2585 asflags_filter=$_flags_filter
2586 add_asflags $_flags $_cflags
2587 set_ccvars AS
2588
2589 probe_cc ld "$ld"
2590 ldflags_filter=$_flags_filter
2591 add_ldflags $_flags $_ldflags
2592 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2593 LD_O=${_ld_o-$LD_O}
2594 LD_LIB=${_ld_lib-$LD_LIB}
2595 LD_PATH=${_ld_path-$LD_PATH}
2596
2597 probe_cc hostld "$host_ld"
2598 host_ldflags_filter=$_flags_filter
2599 add_host_ldflags $_flags $_ldflags
2600 HOSTLD_O=${_ld_o-$HOSTLD_O}
2601
2602 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2603     probe_cc depcc "$dep_cc"
2604     CCDEP=${_DEPCMD:-$DEPCMD}
2605     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2606     DEPCCFLAGS=$_flags
2607 fi
2608
2609 if $ar 2>&1 | grep -q Microsoft; then
2610     arflags="-nologo"
2611     ar_o='-out:$@'
2612 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2613     arflags="rq"
2614     ar_o='$@'
2615 else
2616     arflags="rc"
2617     ar_o='$@'
2618 fi
2619
2620 add_cflags $extra_cflags
2621 add_asflags $extra_cflags
2622
2623 if test -n "$sysroot"; then
2624     case "$cc_type" in
2625         gcc|llvm_gcc|clang)
2626             add_cppflags --sysroot="$sysroot"
2627             add_ldflags --sysroot="$sysroot"
2628         ;;
2629         tms470)
2630             add_cppflags -I"$sysinclude"
2631             add_ldflags  --sysroot="$sysroot"
2632         ;;
2633     esac
2634 fi
2635
2636 if test "$cpu" = host; then
2637     enabled cross_compile && die "--cpu=host makes no sense when cross-compiling."
2638
2639     case "$cc_type" in
2640         gcc|llvm_gcc)
2641             check_native(){
2642                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2643                 sed -n "/cc1.*$1=/{
2644                             s/.*$1=\\([^ ]*\\).*/\\1/
2645                             p
2646                             q
2647                         }" $TMPE
2648             }
2649             cpu=$(check_native -march || check_native -mcpu)
2650         ;;
2651     esac
2652
2653     test "${cpu:-host}" = host && die "--cpu=host not supported with compiler $cc"
2654 fi
2655
2656 # Deal with common $arch aliases
2657 case "$arch" in
2658     aarch64|arm64)
2659         arch="aarch64"
2660     ;;
2661     arm*)
2662         arch="arm"
2663     ;;
2664     mips*|IP*)
2665         arch="mips"
2666     ;;
2667     parisc*|hppa*)
2668         arch="parisc"
2669     ;;
2670     "Power Macintosh"|ppc*|powerpc*)
2671         arch="ppc"
2672     ;;
2673     s390|s390x)
2674         arch="s390"
2675     ;;
2676     sh4|sh)
2677         arch="sh4"
2678     ;;
2679     sun4u|sparc*)
2680         arch="sparc"
2681     ;;
2682     tilegx|tile-gx)
2683         arch="tilegx"
2684     ;;
2685     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
2686         arch="x86"
2687     ;;
2688 esac
2689
2690 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2691 enable $arch
2692
2693 # Add processor-specific flags
2694 if enabled aarch64; then
2695
2696     case $cpu in
2697         armv*)
2698             cpuflags="-march=$cpu"
2699         ;;
2700         *)
2701             cpuflags="-mcpu=$cpu"
2702         ;;
2703     esac
2704
2705 elif enabled alpha; then
2706
2707     cpuflags="-mcpu=$cpu"
2708
2709 elif enabled arm; then
2710
2711     check_arm_arch() {
2712         check_cpp_condition stddef.h \
2713             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
2714             $cpuflags
2715     }
2716
2717     probe_arm_arch() {
2718         if   check_arm_arch 4;        then echo armv4;
2719         elif check_arm_arch 4T;       then echo armv4t;
2720         elif check_arm_arch 5;        then echo armv5;
2721         elif check_arm_arch 5E;       then echo armv5e;
2722         elif check_arm_arch 5T;       then echo armv5t;
2723         elif check_arm_arch 5TE;      then echo armv5te;
2724         elif check_arm_arch 5TEJ;     then echo armv5te;
2725         elif check_arm_arch 6;        then echo armv6;
2726         elif check_arm_arch 6J;       then echo armv6j;
2727         elif check_arm_arch 6K;       then echo armv6k;
2728         elif check_arm_arch 6Z;       then echo armv6z;
2729         elif check_arm_arch 6ZK;      then echo armv6zk;
2730         elif check_arm_arch 6T2;      then echo armv6t2;
2731         elif check_arm_arch 7;        then echo armv7;
2732         elif check_arm_arch 7A  7_A;  then echo armv7-a;
2733         elif check_arm_arch 7R  7_R;  then echo armv7-r;
2734         elif check_arm_arch 7M  7_M;  then echo armv7-m;
2735         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
2736         elif check_arm_arch 8A  8_A;  then echo armv8-a;
2737         fi
2738     }
2739
2740     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
2741
2742     case $cpu in
2743         armv*)
2744             cpuflags="-march=$cpu"
2745             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
2746         ;;
2747         *)
2748             cpuflags="-mcpu=$cpu"
2749             case $cpu in
2750                 cortex-a*)                               subarch=armv7a  ;;
2751                 cortex-r*)                               subarch=armv7r  ;;
2752                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
2753                 arm11*)                                  subarch=armv6   ;;
2754                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
2755                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
2756                 *)                             subarch=$(probe_arm_arch) ;;
2757             esac
2758         ;;
2759     esac
2760
2761     case "$subarch" in
2762         armv5t*)    enable fast_clz                ;;
2763         armv[6-8]*) enable fast_clz fast_unaligned ;;
2764     esac
2765
2766 elif enabled avr32; then
2767
2768     case $cpu in
2769         ap7[02]0[0-2])
2770             subarch="avr32_ap"
2771             cpuflags="-mpart=$cpu"
2772         ;;
2773         ap)
2774             subarch="avr32_ap"
2775             cpuflags="-march=$cpu"
2776         ;;
2777         uc3[ab]*)
2778             subarch="avr32_uc"
2779             cpuflags="-mcpu=$cpu"
2780         ;;
2781         uc)
2782             subarch="avr32_uc"
2783             cpuflags="-march=$cpu"
2784         ;;
2785     esac
2786
2787 elif enabled bfin; then
2788
2789     cpuflags="-mcpu=$cpu"
2790
2791 elif enabled mips; then
2792
2793     cpuflags="-march=$cpu"
2794
2795 elif enabled ppc; then
2796
2797     case $(tolower $cpu) in
2798         601|ppc601|powerpc601)
2799             cpuflags="-mcpu=601"
2800             disable altivec
2801         ;;
2802         603*|ppc603*|powerpc603*)
2803             cpuflags="-mcpu=603"
2804             disable altivec
2805         ;;
2806         604*|ppc604*|powerpc604*)
2807             cpuflags="-mcpu=604"
2808             disable altivec
2809         ;;
2810         g3|75*|ppc75*|powerpc75*)
2811             cpuflags="-mcpu=750"
2812             disable altivec
2813         ;;
2814         g4|745*|ppc745*|powerpc745*)
2815             cpuflags="-mcpu=7450"
2816         ;;
2817         74*|ppc74*|powerpc74*)
2818             cpuflags="-mcpu=7400"
2819         ;;
2820         g5|970|ppc970|powerpc970)
2821             cpuflags="-mcpu=970"
2822         ;;
2823         power[3-7]*)
2824             cpuflags="-mcpu=$cpu"
2825         ;;
2826         cell)
2827             cpuflags="-mcpu=cell"
2828             enable ldbrx
2829         ;;
2830         e500mc)
2831             cpuflags="-mcpu=e500mc"
2832             disable altivec
2833         ;;
2834         e500v2)
2835             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
2836             disable altivec
2837         ;;
2838         e500)
2839             cpuflags="-mcpu=8540 -mhard-float"
2840             disable altivec
2841         ;;
2842     esac
2843
2844 elif enabled sparc; then
2845
2846     case $cpu in
2847         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
2848             cpuflags="-mcpu=$cpu"
2849             disable vis
2850         ;;
2851         ultrasparc*|niagara[234])
2852             cpuflags="-mcpu=$cpu"
2853         ;;
2854     esac
2855
2856 elif enabled x86; then
2857
2858     case $cpu in
2859         i[345]86|pentium)
2860             cpuflags="-march=$cpu"
2861             disable mmx
2862         ;;
2863         # targets that do NOT support conditional mov (cmov)
2864         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
2865             cpuflags="-march=$cpu"
2866             disable cmov
2867         ;;
2868         # targets that do support conditional mov (cmov)
2869         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
2870             cpuflags="-march=$cpu"
2871             enable cmov
2872             enable fast_cmov
2873         ;;
2874         # targets that do support conditional mov but on which it's slow
2875         pentium4|pentium4m|prescott|nocona)
2876             cpuflags="-march=$cpu"
2877             enable cmov
2878             disable fast_cmov
2879         ;;
2880     esac
2881
2882 fi
2883
2884 if [ "$cpu" != generic ]; then
2885     add_cflags  $cpuflags
2886     add_asflags $cpuflags
2887 fi
2888
2889 # compiler sanity check
2890 check_exec <<EOF
2891 int main(void){ return 0; }
2892 EOF
2893 if test "$?" != 0; then
2894     echo "$cc is unable to create an executable file."
2895     if test -z "$cross_prefix" && ! enabled cross_compile ; then
2896         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
2897         echo "Only do this if you know what cross compiling means."
2898     fi
2899     die "C compiler test failed."
2900 fi
2901
2902 add_cppflags -D_ISOC99_SOURCE
2903 check_cflags -std=c99
2904 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
2905 #include <stdlib.h>
2906 EOF
2907 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
2908 #include <stdlib.h>
2909 EOF
2910
2911 check_host_cflags -std=c99
2912 check_host_cflags -Wall
2913
2914 check_64bit(){
2915     arch32=$1
2916     arch64=$2
2917     expr=$3
2918     check_code cc "" "int test[2*($expr) - 1]" &&
2919         subarch=$arch64 || subarch=$arch32
2920 }
2921
2922 case "$arch" in
2923     aarch64|alpha|ia64)
2924         spic=$shared
2925     ;;
2926     mips)
2927         check_64bit mips mips64 '_MIPS_SIM > 1'
2928         spic=$shared
2929     ;;
2930     parisc)
2931         check_64bit parisc parisc64 'sizeof(void *) > 4'
2932         spic=$shared
2933     ;;
2934     ppc)
2935         check_64bit ppc ppc64 'sizeof(void *) > 4'
2936         spic=$shared
2937     ;;
2938     sparc)
2939         check_64bit sparc sparc64 'sizeof(void *) > 4'
2940         spic=$shared
2941     ;;
2942     x86)
2943         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
2944         if test "$subarch" = "x86_64"; then
2945             spic=$shared
2946         fi
2947     ;;
2948 esac
2949
2950 enable $subarch
2951 enabled spic && enable pic
2952
2953 # OS specific
2954 case $target_os in
2955     haiku)
2956         prefix_default="/boot/common"
2957         network_extralibs="-lnetwork"
2958         host_libs=
2959         ;;
2960     sunos)
2961         AVSERVERLDFLAGS=""
2962         SHFLAGS='-shared -Wl,-h,$$(@F)'
2963         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
2964         network_extralibs="-lsocket -lnsl"
2965         add_cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
2966         # When using suncc to build, the Solaris linker will mark
2967         # an executable with each instruction set encountered by
2968         # the Solaris assembler.  As our libraries contain their own
2969         # guards for processor-specific code, instead suppress
2970         # generation of the HWCAPS ELF section on Solaris x86 only.
2971         enabled_all suncc x86 && echo "hwcap_1 = OVERRIDE;" > mapfile && add_ldflags -Wl,-M,mapfile
2972         nm_default='nm -P -g'
2973         ;;
2974     netbsd)
2975         disable symver
2976         oss_indev_extralibs="-lossaudio"
2977         oss_outdev_extralibs="-lossaudio"
2978         ;;
2979     openbsd|bitrig)
2980         disable symver
2981         SHFLAGS='-shared'
2982         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
2983         SLIB_INSTALL_LINKS=
2984         oss_indev_extralibs="-lossaudio"
2985         oss_outdev_extralibs="-lossaudio"
2986         ;;
2987     dragonfly)
2988         disable symver
2989         ;;
2990     freebsd)
2991         ;;
2992     bsd/os)
2993         add_extralibs -lpoll -lgnugetopt
2994         ;;
2995     darwin)
2996         gas="gas-preprocessor.pl $cc"
2997         enabled ppc && add_asflags -force_cpusubtype_ALL
2998         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
2999         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3000         add_ldflags -Wl,-dynamic,-search_paths_first
3001         SLIBSUF=".dylib"
3002         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3003         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3004         AVSERVERLDFLAGS=-Wl,-bind_at_load
3005         objformat="macho"
3006         enabled x86_64 && objformat="macho64"
3007         enabled_any pic shared ||
3008             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3009         ;;
3010     mingw32*)
3011         if test $target_os = "mingw32ce"; then
3012             disable network
3013         else
3014             target_os=mingw32
3015         fi
3016         LIBTARGET=i386
3017         if enabled x86_64; then
3018             LIBTARGET="i386:x86-64"
3019         elif enabled arm; then
3020             LIBTARGET=arm-wince
3021         fi
3022         shlibdir_default="$bindir_default"
3023         SLIBPREF=""
3024         SLIBSUF=".dll"
3025         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3026         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3027         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3028         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3029         SLIB_INSTALL_LINKS=
3030         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3031         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3032         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3033         objformat="win32"
3034         dlltool="${cross_prefix}dlltool"
3035         ranlib=:
3036         enable dos_paths
3037         ;;
3038     win32|win64)
3039         if enabled shared; then
3040             # Link to the import library instead of the normal static library
3041             # for shared libs.
3042             LD_LIB='%.lib'
3043             # Cannot build shared and static libraries at the same time with
3044             # MSVC.
3045             disable static
3046         fi
3047         shlibdir_default="$bindir_default"
3048         SLIBPREF=""
3049         SLIBSUF=".dll"
3050         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3051         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3052         SLIB_CREATE_DEF_CMD='makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3053         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3054         SLIB_INSTALL_LINKS=
3055         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3056         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3057         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3058         objformat="win32"
3059         ranlib=:
3060         enable dos_paths
3061         ;;
3062     cygwin*)
3063         target_os=cygwin
3064         shlibdir_default="$bindir_default"
3065         SLIBPREF="cyg"
3066         SLIBSUF=".dll"
3067         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3068         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3069         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3070         SLIB_INSTALL_LINKS=
3071         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3072         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3073         objformat="win32"
3074         enable dos_paths
3075         ;;
3076     *-dos|freedos|opendos)
3077         network_extralibs="-lsocket"
3078         objformat="coff"
3079         enable dos_paths
3080         add_cppflags -U__STRICT_ANSI__
3081         ;;
3082     linux)
3083         enable dv1394
3084         ;;
3085     irix*)
3086         target_os=irix
3087         ranlib="echo ignoring ranlib"
3088         ;;
3089     os/2*)
3090         ln_s="cp -f"
3091         objformat="aout"
3092         add_cppflags -D_GNU_SOURCE
3093         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3094         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3095         AVSERVERLDFLAGS=""
3096         LIBSUF="_s.a"
3097         SLIBPREF=""
3098         SLIBSUF=".dll"
3099         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3100         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3101         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3102             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3103             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3104             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3105             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3106             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3107         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3108             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3109         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3110         enable dos_paths
3111         ;;
3112     gnu/kfreebsd)
3113         add_cppflags -D_BSD_SOURCE
3114         ;;
3115     gnu)
3116         ;;
3117     qnx)
3118         add_cppflags -D_QNX_SOURCE
3119         network_extralibs="-lsocket"
3120         ;;
3121     symbian)
3122         SLIBSUF=".dll"
3123         enable dos_paths
3124         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3125         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3126         add_ldflags -Wl,--target1-abs,--no-undefined \
3127                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3128                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3129         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3130                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3131                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3132         ;;
3133     osf1)
3134         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3135         AVSERVERLDFLAGS=
3136         ;;
3137     minix)
3138         ;;
3139     plan9)
3140         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3141                      -D_REENTRANT_SOURCE        \
3142                      -D_RESEARCH_SOURCE         \
3143                      -DFD_SETSIZE=96            \
3144                      -DHAVE_SOCK_OPTS
3145         add_compat strtod.o strtod=avpriv_strtod
3146         network_extralibs='-lbsd'
3147         exeobjs=compat/plan9/main.o
3148         disable avserver
3149         cp_f='cp'
3150         ;;
3151     none)
3152         ;;
3153     *)
3154         die "Unknown OS '$target_os'."
3155         ;;
3156 esac
3157
3158 # determine libc flavour
3159
3160 # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3161 if check_cpp_condition features.h "defined __UCLIBC__"; then
3162     libc_type=uclibc
3163     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3164 elif check_cpp_condition features.h "defined __GLIBC__"; then
3165     libc_type=glibc
3166     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3167 # MinGW headers can be installed on Cygwin, so check for newlib first.
3168 elif check_cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3169     libc_type=newlib
3170     add_cppflags -U__STRICT_ANSI__
3171 elif check_header _mingw.h; then
3172     libc_type=mingw
3173     check_cpp_condition _mingw.h \
3174         "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) || \
3175             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3176         die "ERROR: MinGW runtime version must be >= 3.15."
3177     add_cppflags -U__STRICT_ANSI__
3178 elif check_func_headers stdlib.h _get_doserrno; then
3179     libc_type=msvcrt
3180     add_compat strtod.o strtod=avpriv_strtod
3181     add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3182                                  _snprintf=avpriv_snprintf  \
3183                                  vsnprintf=avpriv_vsnprintf
3184 elif check_cpp_condition stddef.h "defined __KLIBC__"; then
3185     libc_type=klibc
3186 fi
3187
3188 test -n "$libc_type" && enable $libc_type
3189
3190 # hacks for compiler/libc/os combinations
3191
3192 if enabled_all tms470 glibc; then
3193     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3194     add_cppflags -D__USER_LABEL_PREFIX__=
3195     add_cppflags -D__builtin_memset=memset
3196     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3197     add_cflags   -pds=48    # incompatible redefinition of macro
3198 fi
3199
3200 if enabled_all ccc glibc; then
3201     add_ldflags -Wl,-z,now  # calls to libots crash without this
3202 fi
3203
3204 esc(){
3205     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3206 }
3207
3208 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3209
3210 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable pic
3211
3212 set_default $PATHS_LIST
3213 set_default nm
3214
3215 # we need to build at least one lib type
3216 if ! enabled_any static shared; then
3217     cat <<EOF
3218 At least one library type must be built.
3219 Specify --enable-static to build the static libraries or --enable-shared to
3220 build the shared libraries as well. To only build the shared libraries specify
3221 --disable-static in addition to --enable-shared.
3222 EOF
3223     exit 1;
3224 fi
3225
3226 die_license_disabled() {
3227     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3228 }
3229
3230 die_license_disabled gpl libcdio
3231 die_license_disabled gpl libx264
3232 die_license_disabled gpl libxavs
3233 die_license_disabled gpl libxvid
3234 die_license_disabled gpl x11grab
3235
3236 die_license_disabled nonfree libfaac
3237 die_license_disabled nonfree libfdk_aac
3238 die_license_disabled nonfree openssl
3239
3240 die_license_disabled version3 libopencore_amrnb
3241 die_license_disabled version3 libopencore_amrwb
3242 die_license_disabled version3 libvo_aacenc
3243 die_license_disabled version3 libvo_amrwbenc
3244
3245 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3246
3247 disabled optimizations || check_cflags -fomit-frame-pointer
3248
3249 enable_pic() {
3250     enable pic
3251     add_cppflags -DPIC
3252     add_cflags   -fPIC
3253     add_asflags  -fPIC
3254 }
3255
3256 enabled pic && enable_pic
3257
3258 check_cc <<EOF || die "Symbol mangling check failed."
3259 int ff_extern;
3260 EOF
3261 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3262 extern_prefix=${sym%%ff_extern*}
3263
3264 check_cc <<EOF && enable_weak inline_asm
3265 void foo(void) { __asm__ volatile ("" ::); }
3266 EOF
3267
3268 _restrict=
3269 for restrict_keyword in restrict __restrict__ __restrict; do
3270     check_cc <<EOF && _restrict=$restrict_keyword && break
3271 void foo(char * $restrict_keyword p);
3272 EOF
3273 done
3274
3275 check_cc <<EOF && enable attribute_packed
3276 struct { int x; } __attribute__((packed)) x;
3277 EOF
3278
3279 check_cc <<EOF && enable attribute_may_alias
3280 union { int x; } __attribute__((may_alias)) x;
3281 EOF
3282
3283 check_cc <<EOF || die "endian test failed"
3284 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3285 EOF
3286 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3287
3288 if enabled alpha; then
3289
3290     check_cflags -mieee
3291
3292 elif enabled arm; then
3293
3294     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3295     enabled thumb && check_cflags -mthumb || check_cflags -marm
3296     nogas=die
3297
3298     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3299         enable vfp_args
3300     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3301         case "${cross_prefix:-$cc}" in
3302             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3303             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3304 __asm__ (".eabi_attribute 28, 1");
3305 int main(void) { return 0; }
3306 EOF
3307         esac
3308         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3309     fi
3310
3311     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3312     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3313     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3314     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3315     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3316     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3317
3318     [ $target_os = linux ] ||
3319         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3320             $ARCH_EXT_LIST_ARM
3321
3322     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3323     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3324
3325     enabled_all armv6t2 shared !pic && enable_pic
3326
3327 elif enabled mips; then
3328
3329     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3330
3331 elif enabled parisc; then
3332
3333     if enabled gcc; then
3334         case $($cc -dumpversion) in
3335             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3336         esac
3337     fi
3338
3339 elif enabled ppc; then
3340
3341     enable local_aligned_8 local_aligned_16
3342
3343     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3344     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3345     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3346     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3347
3348     # AltiVec flags: The FSF version of GCC differs from the Apple version
3349     if enabled altivec; then
3350         nogas=warn
3351         check_cflags -maltivec -mabi=altivec &&
3352         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3353         check_cflags -faltivec
3354
3355         # check if our compiler supports Motorola AltiVec C API
3356         check_cc <<EOF || disable altivec
3357 $inc_altivec_h
3358 int main(void) {
3359     vector signed int v1 = (vector signed int) { 0 };
3360     vector signed int v2 = (vector signed int) { 1 };
3361     v1 = vec_add(v1, v2);
3362     return 0;
3363 }
3364 EOF
3365
3366         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3367     fi
3368
3369 elif enabled sparc; then
3370
3371     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3372
3373 elif enabled x86; then
3374
3375     check_builtin rdtsc    intrin.h   "__rdtsc()"
3376     check_builtin mm_empty mmintrin.h "_mm_empty()"
3377
3378     enable local_aligned_8 local_aligned_16
3379
3380     # check whether EBP is available on x86
3381     # As 'i' is stored on the stack, this program will crash
3382     # if the base pointer is used to access it because the
3383     # base pointer is cleared in the inline assembly code.
3384     check_exec_crash <<EOF && enable ebp_available
3385 volatile int i=0;
3386 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3387 return i;
3388 EOF
3389
3390     # check whether EBX is available on x86
3391     check_inline_asm ebx_available '""::"b"(0)' &&
3392         check_inline_asm ebx_available '"":::"%ebx"'
3393
3394     # check whether xmm clobbers are supported
3395     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3396
3397     # check whether binutils is new enough to compile SSSE3/MMXEXT
3398     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3399     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3400
3401     if ! disabled_any asm mmx yasm; then
3402         if check_cmd $yasmexe --version; then
3403             enabled x86_64 && yasm_extra="-m amd64"
3404             yasm_debug="-g dwarf2"
3405         elif check_cmd nasm -v; then
3406             yasmexe=nasm
3407             yasm_debug="-g -F dwarf"
3408             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3409         fi
3410
3411         YASMFLAGS="-f $objformat $yasm_extra"
3412         enabled pic               && append YASMFLAGS "-DPIC"
3413         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3414         case "$objformat" in
3415             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3416         esac
3417
3418         check_yasm "vextractf128 xmm0, ymm0, 0" && enable yasm ||
3419             die "yasm not found, use --disable-yasm for a crippled build"
3420         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3421         check_yasm "CPU amdnop" && enable cpunop
3422     fi
3423
3424     case "$cpu" in
3425         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3426             disable fast_clz
3427         ;;
3428     esac
3429
3430 fi
3431
3432 if enabled asm; then
3433     as=${gas:=$as}
3434     check_as <<EOF && enable gnu_as || \
3435         $nogas "GNU assembler not found, install gas-preprocessor"
3436 .macro m n
3437 \n: .int 0
3438 .endm
3439 m x
3440 EOF
3441 fi
3442
3443 check_ldflags -Wl,--as-needed
3444
3445 if check_func dlopen; then
3446     ldl=
3447 elif check_func dlopen -ldl; then
3448     ldl=-ldl
3449 fi
3450
3451 if ! disabled network; then
3452     check_type "sys/types.h sys/socket.h" socklen_t
3453     check_type netdb.h "struct addrinfo"
3454     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3455     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3456     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3457     check_type netinet/in.h "struct sockaddr_in6"
3458     check_type poll.h "struct pollfd"
3459     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3460     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3461     check_type netinet/sctp.h "struct sctp_event_subscribe"
3462     check_func getaddrinfo $network_extralibs
3463     check_func getservbyport $network_extralibs
3464     # Prefer arpa/inet.h over winsock2
3465     if check_header arpa/inet.h ; then
3466         check_func closesocket
3467     elif check_header winsock2.h ; then
3468         check_func_headers winsock2.h closesocket -lws2 &&
3469             network_extralibs="-lws2" ||
3470         { check_func_headers winsock2.h closesocket -lws2_32 &&
3471             network_extralibs="-lws2_32"; }
3472         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3473         check_type ws2tcpip.h socklen_t
3474         check_type ws2tcpip.h "struct addrinfo"
3475         check_type ws2tcpip.h "struct group_source_req"
3476         check_type ws2tcpip.h "struct ip_mreq_source"
3477         check_type ws2tcpip.h "struct ipv6_mreq"
3478         check_type winsock2.h "struct pollfd"
3479         check_type ws2tcpip.h "struct sockaddr_in6"
3480         check_type ws2tcpip.h "struct sockaddr_storage"
3481         check_struct winsock2.h "struct sockaddr" sa_len
3482     else
3483         disable network
3484     fi
3485 fi
3486
3487 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3488 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3489
3490 check_func  fcntl
3491 check_func  fork
3492 check_func  gethrtime
3493 check_func  getopt
3494 check_func  getrusage
3495 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
3496 check_func  gettimeofday
3497 check_func  inet_aton $network_extralibs
3498 check_func  isatty
3499 check_func  localtime_r
3500 check_func  ${malloc_prefix}memalign            && enable memalign
3501 check_func  mkstemp
3502 check_func  mmap
3503 check_func  mprotect
3504 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3505 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3506 check_func  setrlimit
3507 check_func  strerror_r
3508 check_func  strptime
3509 check_func  strtok_r
3510 check_func  sched_getaffinity
3511 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
3512 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
3513 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
3514 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
3515 check_func  sysconf
3516 check_func  sysctl
3517 check_func  usleep
3518 check_func_headers io.h setmode
3519 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
3520 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
3521 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
3522 check_func_headers windows.h GetProcessAffinityMask
3523 check_func_headers windows.h GetProcessTimes
3524 check_func_headers windows.h GetSystemTimeAsFileTime
3525 check_func_headers windows.h MapViewOfFile
3526 check_func_headers windows.h SetConsoleTextAttribute
3527 check_func_headers windows.h Sleep
3528 check_func_headers windows.h VirtualAlloc
3529
3530 check_header direct.h
3531 check_header dlfcn.h
3532 check_header dxva.h
3533 check_header dxva2api.h
3534 check_header io.h
3535 check_header malloc.h
3536 check_header poll.h
3537 check_header sys/mman.h
3538 check_header sys/param.h
3539 check_header sys/resource.h
3540 check_header sys/select.h
3541 check_header sys/time.h
3542 check_header unistd.h
3543 check_header vdpau/vdpau.h
3544 check_header vdpau/vdpau_x11.h
3545 check_header VideoDecodeAcceleration/VDADecoder.h
3546 check_header windows.h
3547 check_header X11/extensions/XvMClib.h
3548
3549 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
3550 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
3551
3552 if ! disabled w32threads && ! enabled pthreads; then
3553     check_func_headers "windows.h process.h" _beginthreadex && enable w32threads
3554 fi
3555
3556 # check for some common methods of building with pthread support
3557 # do this before the optional library checks as some of them require pthreads
3558 if ! disabled pthreads && ! enabled w32threads; then
3559     enable pthreads
3560     if check_func pthread_create; then
3561         :
3562     elif check_func pthread_create -pthread; then
3563         add_cflags -pthread
3564         add_extralibs -pthread
3565     elif check_func pthread_create -pthreads; then
3566         add_cflags -pthreads
3567         add_extralibs -pthreads
3568     elif check_func pthread_create -lpthreadGC2; then
3569         add_extralibs -lpthreadGC2
3570     elif ! check_lib pthread.h pthread_create -lpthread; then
3571         disable pthreads
3572     fi
3573 fi
3574
3575 for thread in $THREADS_LIST; do
3576     if enabled $thread; then
3577         test -n "$thread_type" &&
3578             die "ERROR: Only one thread type must be selected." ||
3579             thread_type="$thread"
3580     fi
3581 done
3582
3583 enabled sync_val_compare_and_swap && enable atomics_gcc
3584 enabled machine_rw_barrier && enabled atomic_cas_ptr && enable atomics_suncc
3585 enabled MemoryBarrier && enable atomics_win32
3586
3587 check_lib math.h sin -lm && LIBM="-lm"
3588 enabled vaapi && require vaapi va/va.h vaInitialize -lva
3589
3590 atan2f_args=2
3591 ldexpf_args=2
3592 powf_args=2
3593
3594 for func in $MATH_FUNCS; do
3595     eval check_mathfunc $func \${${func}_args:-1}
3596 done
3597
3598 # these are off by default, so fail if requested and not available
3599 enabled avisynth   && require2 vfw32 "windows.h vfw.h" AVIFileInit -lavifil32
3600 enabled frei0r     && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
3601 enabled gnutls     && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
3602 enabled libfaac    && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
3603 enabled libfdk_aac && require  libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
3604 enabled libfreetype && require_pkg_config freetype2 "ft2build.h freetype/freetype.h" FT_Init_FreeType
3605 enabled libgsm     && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
3606                             check_lib "${gsm_hdr}" gsm_create -lgsm && break;
3607                         done || die "ERROR: libgsm not found"; }
3608 enabled libilbc    && require  libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
3609 enabled libmp3lame && require  "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
3610 enabled libopencore_amrnb  && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
3611 enabled libopencore_amrwb  && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
3612 enabled libopencv  && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
3613 enabled libopenjpeg && require libopenjpeg openjpeg.h opj_version -lopenjpeg
3614 enabled libopus    && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
3615 enabled libpulse && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
3616 enabled librtmp    && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
3617 enabled libschroedinger && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
3618 enabled libspeex   && require  libspeex speex/speex.h speex_decoder_init -lspeex
3619 enabled libtheora  && require  libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
3620 enabled libvo_aacenc && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
3621 enabled libvo_amrwbenc && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
3622 enabled libvorbis  && require  libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
3623 enabled libvpx     && {
3624     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
3625                                 die "ERROR: libvpx decoder version must be >=0.9.1"; }
3626     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
3627                                 die "ERROR: libvpx encoder version must be >=0.9.6"; }
3628     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder;  }
3629     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
3630 enabled libx264    && require  libx264 x264.h x264_encoder_encode -lx264 &&
3631                       { check_cpp_condition x264.h "X264_BUILD >= 118" ||
3632                         die "ERROR: libx264 version must be >= 0.118."; }
3633 enabled libxavs    && require  libxavs xavs.h xavs_encoder_encode -lxavs
3634 enabled libxvid    && require  libxvid xvid.h xvid_global -lxvidcore
3635 enabled openssl    && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
3636                         check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
3637                         check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
3638                         die "ERROR: openssl not found"; }
3639
3640 if enabled gnutls; then
3641     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
3642     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
3643 fi
3644
3645 # libdc1394 check
3646 if enabled libdc1394; then
3647     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
3648         enable libdc1394_2; } ||
3649     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
3650         enable libdc1394_1; } ||
3651     die "ERROR: No version of libdc1394 found "
3652 fi
3653
3654 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
3655     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
3656     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
3657     enable sdl
3658 fi
3659
3660 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
3661
3662 check_header linux/fb.h
3663 check_header linux/videodev2.h
3664 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
3665
3666 check_header sys/videoio.h
3667
3668 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
3669 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
3670 # w32api 3.12 had it defined wrong
3671 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
3672
3673 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
3674 { check_header dev/bktr/ioctl_meteor.h &&
3675   check_header dev/bktr/ioctl_bt848.h; } ||
3676 { check_header machine/ioctl_meteor.h &&
3677   check_header machine/ioctl_bt848.h; } ||
3678 { check_header dev/video/meteor/ioctl_meteor.h &&
3679   check_header dev/video/bktr/ioctl_bt848.h; } ||
3680 check_header dev/ic/bt8xx.h
3681
3682 check_header sndio.h
3683 check_header sys/soundcard.h
3684 check_header soundcard.h
3685
3686 enabled_any alsa_indev alsa_outdev && check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
3687
3688 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
3689     check_func jack_port_get_latency_range -ljack
3690
3691 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
3692
3693 if enabled libcdio; then
3694     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
3695 fi
3696
3697 enabled x11grab                                           &&
3698 require X11 X11/Xlib.h XOpenDisplay -lX11                 &&
3699 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
3700 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
3701
3702 enabled vdpau &&
3703     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
3704     disable vdpau
3705
3706 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
3707
3708 # add some useful compiler flags if supported
3709 check_cflags -Wdeclaration-after-statement
3710 check_cflags -Wall
3711 check_cflags -Wno-parentheses
3712 check_cflags -Wno-switch
3713 check_cflags -Wno-format-zero-length
3714 check_cflags -Wdisabled-optimization
3715 check_cflags -Wpointer-arith
3716 check_cflags -Wredundant-decls
3717 check_cflags -Wno-pointer-sign
3718 check_cflags -Wcast-qual
3719 check_cflags -Wwrite-strings
3720 check_cflags -Wtype-limits
3721 check_cflags -Wundef
3722 check_cflags -Wmissing-prototypes
3723 check_cflags -Wstrict-prototypes
3724 enabled extra_warnings && check_cflags -Winline
3725
3726 # add some linker flags
3727 check_ldflags -Wl,--warn-common
3728 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
3729 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
3730
3731 enabled xmm_clobber_test &&
3732     check_ldflags -Wl,--wrap,avcodec_open2              \
3733                   -Wl,--wrap,avcodec_decode_audio4      \
3734                   -Wl,--wrap,avcodec_decode_video2      \
3735                   -Wl,--wrap,avcodec_decode_subtitle2   \
3736                   -Wl,--wrap,avcodec_encode_audio2      \
3737                   -Wl,--wrap,avcodec_encode_video       \
3738                   -Wl,--wrap,avcodec_encode_subtitle    \
3739                   -Wl,--wrap,sws_scale ||
3740     disable xmm_clobber_test
3741
3742 echo "X{};" > $TMPV
3743 if test_ldflags -Wl,--version-script,$TMPV; then
3744     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
3745     check_cc <<EOF && enable symver_asm_label
3746 void ff_foo(void) __asm__ ("av_foo@VERSION");
3747 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
3748 EOF
3749     check_cc <<EOF && enable symver_gnu_asm
3750 __asm__(".symver ff_foo,av_foo@VERSION");
3751 void ff_foo(void) {}
3752 EOF
3753 fi
3754
3755 if [ -z "$optflags" ]; then
3756     if enabled small; then
3757         optflags=$cflags_size
3758     elif enabled optimizations; then
3759         optflags=$cflags_speed
3760     else
3761         optflags=$cflags_noopt
3762     fi
3763 fi
3764
3765 check_optflags(){
3766     check_cflags "$@"
3767     enabled lto && check_ldflags "$@"
3768 }
3769
3770
3771 if enabled lto; then
3772     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
3773     check_cflags  -flto
3774     check_ldflags -flto $cpuflags
3775 fi
3776
3777 check_optflags $optflags
3778 check_optflags -fno-math-errno
3779 check_optflags -fno-signed-zeros
3780
3781 if enabled icc; then
3782     # Just warnings, no remarks
3783     check_cflags -w1
3784     # -wd: Disable following warnings
3785     # 144, 167, 556: -Wno-pointer-sign
3786     # 1292: attribute "foo" ignored
3787     # 1419: external declaration in primary source file
3788     # 10006: ignoring unknown option -fno-signed-zeros
3789     # 10148: ignoring unknown option -Wno-parentheses
3790     # 10156: ignoring option '-W'; no argument required
3791     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
3792     # 11030: Warning unknown option --as-needed
3793     # 10156: ignoring option '-export'; no argument required
3794     check_ldflags -wd10156,11030
3795     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
3796     enable ebp_available
3797     if enabled x86_32; then
3798         icc_version=$($cc -dumpversion)
3799         test ${icc_version%%.*} -ge 11 &&
3800             check_cflags -falign-stack=maintain-16-byte ||
3801             disable aligned_stack
3802     fi
3803 elif enabled ccc; then
3804     # disable some annoying warnings
3805     add_cflags -msg_disable bitnotint
3806     add_cflags -msg_disable mixfuncvoid
3807     add_cflags -msg_disable nonstandcast
3808     add_cflags -msg_disable unsupieee
3809 elif enabled gcc; then
3810     check_optflags -fno-tree-vectorize
3811     check_cflags -Werror=implicit-function-declaration
3812     check_cflags -Werror=missing-prototypes
3813     check_cflags -Werror=return-type
3814     check_cflags -Werror=declaration-after-statement
3815     check_cflags -Werror=vla
3816 elif enabled llvm_gcc; then
3817     check_cflags -mllvm -stack-alignment=16
3818 elif enabled clang; then
3819     check_cflags -mllvm -stack-alignment=16
3820     check_cflags -Qunused-arguments
3821     check_cflags -Werror=implicit-function-declaration
3822     check_cflags -Werror=missing-prototypes
3823     check_cflags -Werror=return-type
3824 elif enabled armcc; then
3825     # 2523: use of inline assembler is deprecated
3826     add_cflags -W${armcc_opt},--diag_suppress=2523
3827     add_cflags -W${armcc_opt},--diag_suppress=1207
3828     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
3829     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
3830     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
3831     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
3832 elif enabled tms470; then
3833     add_cflags -pds=824 -pds=837
3834 elif enabled pathscale; then
3835     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
3836 elif enabled msvc; then
3837     enabled x86_32 && disable aligned_stack
3838 fi
3839
3840 case $target_os in
3841     osf1)
3842         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
3843     ;;
3844     plan9)
3845         add_cppflags -Dmain=plan9_main
3846     ;;
3847 esac
3848
3849 enabled_any $THREADS_LIST      && enable threads
3850 enabled_any $ATOMICS_LIST      && enable atomics_native
3851
3852 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
3853
3854 check_deps $CONFIG_LIST       \
3855            $CONFIG_EXTRA      \
3856            $HAVE_LIST         \
3857            $ALL_COMPONENTS    \
3858
3859 ! enabled_any memalign posix_memalign aligned_malloc &&
3860     enabled_any $need_memalign && enable memalign_hack
3861
3862 echo "install prefix            $prefix"
3863 echo "source path               $source_path"
3864 echo "C compiler                $cc"
3865 echo "ARCH                      $arch ($cpu)"
3866 if test "$build_suffix" != ""; then
3867     echo "build suffix              $build_suffix"
3868 fi
3869 if test "$extra_version" != ""; then
3870     echo "version string suffix     $extra_version"
3871 fi
3872 echo "big-endian                ${bigendian-no}"
3873 echo "runtime cpu detection     ${runtime_cpudetect-no}"
3874 if enabled x86; then
3875     echo "${yasmexe}                      ${yasm-no}"
3876     echo "MMX enabled               ${mmx-no}"
3877     echo "MMXEXT enabled            ${mmxext-no}"
3878     echo "3DNow! enabled            ${amd3dnow-no}"
3879     echo "3DNow! extended enabled   ${amd3dnowext-no}"
3880     echo "SSE enabled               ${sse-no}"
3881     echo "SSSE3 enabled             ${ssse3-no}"
3882     echo "AVX enabled               ${avx-no}"
3883     echo "FMA4 enabled              ${fma4-no}"
3884     echo "CMOV enabled              ${cmov-no}"
3885     echo "CMOV is fast              ${fast_cmov-no}"
3886     echo "EBX available             ${ebx_available-no}"
3887     echo "EBP available             ${ebp_available-no}"
3888 fi
3889 if enabled arm; then
3890     echo "ARMv5TE enabled           ${armv5te-no}"
3891     echo "ARMv6 enabled             ${armv6-no}"
3892     echo "ARMv6T2 enabled           ${armv6t2-no}"
3893     echo "VFP enabled               ${vfp-no}"
3894     echo "NEON enabled              ${neon-no}"
3895 fi
3896 if enabled ppc; then
3897     echo "AltiVec enabled           ${altivec-no}"
3898     echo "PPC 4xx optimizations     ${ppc4xx-no}"
3899     echo "dcbzl available           ${dcbzl-no}"
3900 fi
3901 if enabled sparc; then
3902     echo "VIS enabled               ${vis-no}"
3903 fi
3904 echo "debug symbols             ${debug-no}"
3905 echo "optimize for size         ${small-no}"
3906 echo "optimizations             ${optimizations-no}"
3907 echo "static                    ${static-no}"
3908 echo "shared                    ${shared-no}"
3909 echo "new filter support        ${avfilter-no}"
3910 echo "network support           ${network-no}"
3911 echo "threading support         ${thread_type-no}"
3912 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
3913 echo "SDL support               ${sdl-no}"
3914 test -n "$random_seed" &&
3915     echo "random seed               ${random_seed}"
3916 echo
3917
3918 echo "External libraries:"
3919 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
3920 echo
3921
3922 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
3923     echo "Enabled ${type}s:"
3924     eval list=\$$(toupper $type)_LIST
3925     print_enabled '_*' $list | print_3_columns
3926     echo
3927 done
3928
3929 license="LGPL version 2.1 or later"
3930 if enabled nonfree; then
3931     license="nonfree and unredistributable"
3932 elif enabled gplv3; then
3933     license="GPL version 3 or later"
3934 elif enabled lgplv3; then
3935     license="LGPL version 3 or later"
3936 elif enabled gpl; then
3937     license="GPL version 2 or later"
3938 fi
3939
3940 echo "License: $license"
3941
3942 echo "Creating config.mak and config.h..."
3943
3944 test -e Makefile || $ln_s "$source_path/Makefile" .
3945
3946 config_files="$TMPH config.mak"
3947
3948 cat > config.mak <<EOF
3949 # Automatically generated by configure - do not modify!
3950 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
3951 prefix=$prefix
3952 LIBDIR=\$(DESTDIR)$libdir
3953 SHLIBDIR=\$(DESTDIR)$shlibdir
3954 INCDIR=\$(DESTDIR)$incdir
3955 BINDIR=\$(DESTDIR)$bindir
3956 DATADIR=\$(DESTDIR)$datadir
3957 MANDIR=\$(DESTDIR)$mandir
3958 SRC_PATH=$source_path
3959 CC_IDENT=$cc_ident
3960 ARCH=$arch
3961 CC=$cc
3962 AS=$as
3963 LD=$ld
3964 DEPCC=$dep_cc
3965 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
3966 DEPAS=$as
3967 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
3968 YASM=$yasmexe
3969 DEPYASM=$yasmexe
3970 AR=$ar
3971 ARFLAGS=$arflags
3972 AR_O=$ar_o
3973 RANLIB=$ranlib
3974 LN_S=$ln_s
3975 CPPFLAGS=$CPPFLAGS
3976 CFLAGS=$CFLAGS
3977 ASFLAGS=$ASFLAGS
3978 AS_C=$AS_C
3979 AS_O=$AS_O
3980 CC_C=$CC_C
3981 CC_E=$CC_E
3982 CC_O=$CC_O
3983 LD_O=$LD_O
3984 LD_LIB=$LD_LIB
3985 LD_PATH=$LD_PATH
3986 DLLTOOL=$dlltool
3987 LDFLAGS=$LDFLAGS
3988 LDFLAGS-avserver=$AVSERVERLDFLAGS
3989 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
3990 YASMFLAGS=$YASMFLAGS
3991 BUILDSUF=$build_suffix
3992 FULLNAME=$FULLNAME
3993 LIBPREF=$LIBPREF
3994 LIBSUF=$LIBSUF
3995 LIBNAME=$LIBNAME
3996 SLIBPREF=$SLIBPREF
3997 SLIBSUF=$SLIBSUF
3998 EXESUF=$EXESUF
3999 EXTRA_VERSION=$extra_version
4000 CCDEP=$CCDEP
4001 CCDEP_FLAGS=$CCDEP_FLAGS
4002 ASDEP=$ASDEP
4003 ASDEP_FLAGS=$ASDEP_FLAGS
4004 CC_DEPFLAGS=$CC_DEPFLAGS
4005 AS_DEPFLAGS=$AS_DEPFLAGS
4006 HOSTCC=$host_cc
4007 HOSTLD=$host_ld
4008 HOSTCFLAGS=$host_cflags
4009 HOSTCPPFLAGS=$host_cppflags
4010 HOSTEXESUF=$HOSTEXESUF
4011 HOSTLDFLAGS=$host_ldflags
4012 HOSTLIBS=$host_libs
4013 DEPHOSTCC=$host_cc
4014 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4015 HOSTCCDEP=$HOSTCCDEP
4016 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4017 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4018 HOSTCC_C=$HOSTCC_C
4019 HOSTCC_O=$HOSTCC_O
4020 HOSTLD_O=$HOSTLD_O
4021 TARGET_EXEC=$target_exec
4022 TARGET_PATH=$target_path
4023 LIBS-avplay=$sdl_libs
4024 CFLAGS-avplay=$sdl_cflags
4025 ZLIB=$($ldflags_filter -lz)
4026 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4027 EXTRALIBS=$extralibs
4028 COMPAT_OBJS=$compat_objs
4029 EXEOBJS=$exeobjs
4030 INSTALL=install
4031 LIBTARGET=${LIBTARGET}
4032 SLIBNAME=${SLIBNAME}
4033 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4034 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4035 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4036 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4037 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4038 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4039 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4040 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4041 SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
4042 EOF
4043
4044 get_version(){
4045     lcname=lib${1}
4046     name=$(toupper $lcname)
4047     file=$source_path/$lcname/version.h
4048     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")