Merge/split side data.
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # FFmpeg 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 FFMPEG, 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 FFmpeg."
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 show_help(){
58 cat <<EOF
59 Usage: configure [options]
60 Options: [defaults in brackets after descriptions]
61
62 Standard options:
63   --help                   print this message
64   --logfile=FILE           log tests and output to FILE [config.log]
65   --disable-logging        do not log configure debug information
66   --prefix=PREFIX          install in PREFIX [$prefix]
67   --bindir=DIR             install binaries in DIR [PREFIX/bin]
68   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
69   --libdir=DIR             install libs in DIR [PREFIX/lib]
70   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
71   --incdir=DIR             install includes in DIR [PREFIX/include]
72   --mandir=DIR             install man page in DIR [PREFIX/share/man]
73
74 Configuration options:
75   --disable-static         do not build static libraries [no]
76   --enable-shared          build shared libraries [no]
77   --enable-gpl             allow use of GPL code, the resulting libs
78                            and binaries will be under GPL [no]
79   --enable-version3        upgrade (L)GPL to version 3 [no]
80   --enable-nonfree         allow use of nonfree code, the resulting libs
81                            and binaries will be unredistributable [no]
82   --disable-doc            do not build documentation
83   --disable-ffmpeg         disable ffmpeg build
84   --disable-ffplay         disable ffplay build
85   --disable-ffprobe        disable ffprobe build
86   --disable-ffserver       disable ffserver build
87   --disable-avdevice       disable libavdevice build
88   --disable-avcodec        disable libavcodec build
89   --disable-avformat       disable libavformat build
90   --disable-swscale        disable libswscale build
91   --disable-postproc       disable libpostproc build
92   --disable-avfilter       disable video filter support [no]
93   --disable-pthreads       disable pthreads [auto]
94   --enable-w32threads      use Win32 threads [no]
95   --enable-x11grab         enable X11 grabbing [no]
96   --disable-network        disable network support [no]
97   --enable-gray            enable full grayscale support (slower color)
98   --disable-swscale-alpha  disable alpha channel support in swscale
99   --disable-fastdiv        disable table-based division
100   --enable-small           optimize for size instead of speed
101   --disable-aandct         disable AAN DCT code
102   --disable-dct            disable DCT code
103   --disable-fft            disable FFT code
104   --disable-golomb         disable Golomb code
105   --disable-huffman        disable Huffman code
106   --disable-lpc            disable LPC code
107   --disable-mdct           disable MDCT code
108   --disable-rdft           disable RDFT code
109   --disable-vaapi          disable VAAPI code
110   --disable-vdpau          disable VDPAU code
111   --disable-dxva2          disable DXVA2 code
112   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
113   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
114   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
115   --disable-everything     disable all components listed below
116   --disable-encoder=NAME   disable encoder NAME
117   --enable-encoder=NAME    enable encoder NAME
118   --disable-encoders       disable all encoders
119   --disable-decoder=NAME   disable decoder NAME
120   --enable-decoder=NAME    enable decoder NAME
121   --disable-decoders       disable all decoders
122   --disable-hwaccel=NAME   disable hwaccel NAME
123   --enable-hwaccel=NAME    enable hwaccel NAME
124   --disable-hwaccels       disable all hwaccels
125   --disable-muxer=NAME     disable muxer NAME
126   --enable-muxer=NAME      enable muxer NAME
127   --disable-muxers         disable all muxers
128   --disable-demuxer=NAME   disable demuxer NAME
129   --enable-demuxer=NAME    enable demuxer NAME
130   --disable-demuxers       disable all demuxers
131   --enable-parser=NAME     enable parser NAME
132   --disable-parser=NAME    disable parser NAME
133   --disable-parsers        disable all parsers
134   --enable-bsf=NAME        enable bitstream filter NAME
135   --disable-bsf=NAME       disable bitstream filter NAME
136   --disable-bsfs           disable all bitstream filters
137   --enable-protocol=NAME   enable protocol NAME
138   --disable-protocol=NAME  disable protocol NAME
139   --disable-protocols      disable all protocols
140   --disable-indev=NAME     disable input device NAME
141   --disable-outdev=NAME    disable output device NAME
142   --disable-indevs         disable input devices
143   --disable-outdevs        disable output devices
144   --disable-devices        disable all devices
145   --enable-filter=NAME     enable filter NAME
146   --disable-filter=NAME    disable filter NAME
147   --disable-filters        disable all filters
148   --list-decoders          show all available decoders
149   --list-encoders          show all available encoders
150   --list-hwaccels          show all available hardware accelerators
151   --list-muxers            show all available muxers
152   --list-demuxers          show all available demuxers
153   --list-parsers           show all available parsers
154   --list-protocols         show all available protocols
155   --list-bsfs              show all available bitstream filters
156   --list-indevs            show all available input devices
157   --list-outdevs           show all available output devices
158   --list-filters           show all available filters
159
160 External library support:
161   --enable-avisynth        enable reading of AVISynth script files [no]
162   --enable-bzlib           enable bzlib [autodetect]
163   --enable-libcelt         enable CELT/Opus decoding via libcelt [no]
164   --enable-frei0r          enable frei0r video filtering
165   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
166   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
167   --enable-libopencv       enable video filtering via libopencv [no]
168   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
169                            and libraw1394 [no]
170   --enable-libdirac        enable Dirac support via libdirac [no]
171   --enable-libfaac         enable FAAC support via libfaac [no]
172   --enable-libfreetype     enable libfreetype [no]
173   --enable-libgsm          enable GSM support via libgsm [no]
174   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
175   --enable-libnut          enable NUT (de)muxing via libnut,
176                            native (de)muxer exists [no]
177   --enable-libopenjpeg     enable JPEG 2000 decoding via OpenJPEG [no]
178   --enable-librtmp         enable RTMP[E] support via librtmp [no]
179   --enable-libschroedinger enable Dirac support via libschroedinger [no]
180   --enable-libspeex        enable Speex decoding via libspeex [no]
181   --enable-libtheora       enable Theora encoding via libtheora [no]
182   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
183   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
184   --enable-libvorbis       enable Vorbis encoding via libvorbis,
185                            native implementation exists [no]
186   --enable-libvpx          enable VP8 support via libvpx [no]
187   --enable-libx264         enable H.264 encoding via x264 [no]
188   --enable-libxavs         enable AVS encoding via xavs [no]
189   --enable-libxvid         enable Xvid encoding via xvidcore,
190                            native MPEG-4/Xvid encoder exists [no]
191   --enable-mlib            enable Sun medialib [no]
192   --enable-zlib            enable zlib [autodetect]
193
194 Advanced options (experts only):
195   --source-path=PATH       path to source code [$source_path]
196   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
197   --enable-cross-compile   assume a cross-compiler is used
198   --sysroot=PATH           root of cross-build tree
199   --sysinclude=PATH        location of cross-build system headers
200   --target-os=OS           compiler targets OS [$target_os]
201   --target-exec=CMD        command to run executables on target
202   --target-path=DIR        path to view of build directory on target
203   --nm=NM                  use nm tool
204   --ar=AR                  use archive tool AR [$ar_default]
205   --as=AS                  use assembler AS [$as_default]
206   --cc=CC                  use C compiler CC [$cc_default]
207   --ld=LD                  use linker LD
208   --host-cc=HOSTCC         use host C compiler HOSTCC
209   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
210   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
211   --host-libs=HLIBS        use libs HLIBS when linking for host
212   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
213   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
214   --extra-libs=ELIBS       add ELIBS [$ELIBS]
215   --extra-version=STRING   version string suffix []
216   --build-suffix=SUFFIX    library name suffix []
217   --arch=ARCH              select architecture [$arch]
218   --cpu=CPU                select the minimum required CPU (affects
219                            instruction selection, may crash on older CPUs)
220   --disable-asm            disable all assembler optimizations
221   --disable-altivec        disable AltiVec optimizations
222   --disable-amd3dnow       disable 3DNow! optimizations
223   --disable-amd3dnowext    disable 3DNow! extended optimizations
224   --disable-mmx            disable MMX optimizations
225   --disable-mmx2           disable MMX2 optimizations
226   --disable-sse            disable SSE optimizations
227   --disable-ssse3          disable SSSE3 optimizations
228   --disable-avx            disable AVX optimizations
229   --disable-armv5te        disable armv5te optimizations
230   --disable-armv6          disable armv6 optimizations
231   --disable-armv6t2        disable armv6t2 optimizations
232   --disable-armvfp         disable ARM VFP optimizations
233   --disable-iwmmxt         disable iwmmxt optimizations
234   --disable-mmi            disable MMI optimizations
235   --disable-neon           disable neon optimizations
236   --disable-vis            disable VIS optimizations
237   --disable-yasm           disable use of yasm assembler
238   --enable-pic             build position-independent code
239   --malloc-prefix=PFX      prefix malloc and related names with PFX
240   --enable-sram            allow use of on-chip SRAM
241   --disable-symver         disable symbol versioning
242
243 Developer options (useful when working on FFmpeg itself):
244   --disable-debug          disable debugging symbols
245   --enable-debug=LEVEL     set the debug level [$debuglevel]
246   --disable-optimizations  disable compiler optimizations
247   --enable-extra-warnings  enable more compiler warnings
248   --disable-stripping      disable stripping of executables and shared libraries
249   --samples=PATH           location of test samples for FATE, if not set use
250                            \$FATE_SAMPLES at make invocation time.
251
252 NOTE: Object files are built at the place where configure is launched.
253 EOF
254   exit 0
255 }
256
257 quotes='""'
258
259 log(){
260     echo "$@" >> $logfile
261 }
262
263 log_file(){
264     log BEGIN $1
265     pr -n -t $1 >> $logfile
266     log END $1
267 }
268
269 echolog(){
270     log "$@"
271     echo "$@"
272 }
273
274 warn(){
275     log "WARNING: $*"
276     WARNINGS="${WARNINGS}WARNING: $*\n"
277 }
278
279 die(){
280     echolog "$@"
281     cat <<EOF
282
283 If you think configure made a mistake, make sure you are using the latest
284 version from Git.  If the latest version fails, report the problem to the
285 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
286 EOF
287     if disabled logging; then
288         cat <<EOF
289 Rerun configure with logging enabled (do not use --disable-logging), and
290 include the log this produces with your report.
291 EOF
292     else
293 cat <<EOF
294 Include the log file "$logfile" produced by configure as this will help
295 solving the problem.
296 EOF
297     fi
298     exit 1
299 }
300
301 # Avoid locale weirdness, besides we really just want to translate ASCII.
302 toupper(){
303     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
304 }
305
306 tolower(){
307     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
308 }
309
310 c_escape(){
311     echo "$*" | sed 's/["\\]/\\\0/g'
312 }
313
314 sh_quote(){
315     v=$(echo "$1" | sed "s/'/'\\\\''/g")
316     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
317     echo "$v"
318 }
319
320 cleanws(){
321     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
322 }
323
324 filter(){
325     pat=$1
326     shift
327     for v; do
328         eval "case $v in $pat) echo $v ;; esac"
329     done
330 }
331
332 filter_out(){
333     pat=$1
334     shift
335     for v; do
336         eval "case $v in $pat) ;; *) echo $v ;; esac"
337     done
338 }
339
340 map(){
341     m=$1
342     shift
343     for v; do eval $m; done
344 }
345
346 set_all(){
347     value=$1
348     shift
349     for var in $*; do
350         eval $var=$value
351     done
352 }
353
354 set_weak(){
355     value=$1
356     shift
357     for var; do
358         eval : \${$var:=$value}
359     done
360 }
361
362 set_safe(){
363     var=$1
364     shift
365     eval $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')='$*'
366 }
367
368 get_safe(){
369     eval echo \$$(echo "$1" | sed 's/[^A-Za-z0-9_]/_/g')
370 }
371
372 pushvar(){
373     for var in $*; do
374         eval level=\${${var}_level:=0}
375         eval ${var}_${level}="\$$var"
376         eval ${var}_level=$(($level+1))
377     done
378 }
379
380 popvar(){
381     for var in $*; do
382         eval level=\${${var}_level:-0}
383         test $level = 0 && continue
384         eval level=$(($level-1))
385         eval $var="\${${var}_${level}}"
386         eval ${var}_level=$level
387         eval unset ${var}_${level}
388     done
389 }
390
391 enable(){
392     set_all yes $*
393 }
394
395 disable(){
396     set_all no $*
397 }
398
399 enable_weak(){
400     set_weak yes $*
401 }
402
403 disable_weak(){
404     set_weak no $*
405 }
406
407 enable_safe(){
408     for var; do
409         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
410     done
411 }
412
413 disable_safe(){
414     for var; do
415         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
416     done
417 }
418
419 do_enable_deep(){
420     for var; do
421         enabled $var && continue
422         eval sel="\$${var}_select"
423         eval sgs="\$${var}_suggest"
424         pushvar var sgs
425         enable_deep $sel
426         popvar sgs
427         enable_deep_weak $sgs
428         popvar var
429     done
430 }
431
432 enable_deep(){
433     do_enable_deep $*
434     enable $*
435 }
436
437 enable_deep_weak(){
438     do_enable_deep $*
439     enable_weak $*
440 }
441
442 enabled(){
443     test "${1#!}" = "$1" && op== || op=!=
444     eval test "x\$${1#!}" $op "xyes"
445 }
446
447 disabled(){
448     test "${1#!}" = "$1" && op== || op=!=
449     eval test "x\$${1#!}" $op "xno"
450 }
451
452 enabled_all(){
453     for opt; do
454         enabled $opt || return 1
455     done
456 }
457
458 disabled_all(){
459     for opt; do
460         disabled $opt || return 1
461     done
462 }
463
464 enabled_any(){
465     for opt; do
466         enabled $opt && return 0
467     done
468 }
469
470 disabled_any(){
471     for opt; do
472         disabled $opt && return 0
473     done
474     return 1
475 }
476
477 set_default(){
478     for opt; do
479         eval : \${$opt:=\$${opt}_default}
480     done
481 }
482
483 is_in(){
484     value=$1
485     shift
486     for var in $*; do
487         [ $var = $value ] && return 0
488     done
489     return 1
490 }
491
492 check_deps(){
493     for cfg; do
494         cfg="${cfg#!}"
495         enabled ${cfg}_checking && die "Circular dependency for $cfg."
496         disabled ${cfg}_checking && continue
497         enable ${cfg}_checking
498
499         eval dep_all="\$${cfg}_deps"
500         eval dep_any="\$${cfg}_deps_any"
501         eval dep_sel="\$${cfg}_select"
502         eval dep_sgs="\$${cfg}_suggest"
503         eval dep_ifa="\$${cfg}_if"
504         eval dep_ifn="\$${cfg}_if_any"
505
506         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
507         check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
508         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
509
510         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
511         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
512         enabled_all  $dep_all || disable $cfg
513         enabled_any  $dep_any || disable $cfg
514         disabled_any $dep_sel && disable $cfg
515
516         if enabled $cfg; then
517             eval dep_extralibs="\$${cfg}_extralibs"
518             test -n "$dep_extralibs" && add_extralibs $dep_extralibs
519             enable_deep $dep_sel
520             enable_deep_weak $dep_sgs
521         fi
522
523         disable ${cfg}_checking
524     done
525 }
526
527 print_config_h(){
528     enabled $1 && v=1 || v=0
529     echo "#define $2 $v"
530 }
531
532 print_config_mak(){
533     enabled $1 && v= || v=!
534     echo "$v$2=yes"
535 }
536
537 print_config_asm(){
538     enabled $1 && echo "%define $2"
539 }
540
541 print_config(){
542     pfx=$1
543     files=$2
544     shift 2
545     for cfg; do
546         ucname="$(toupper $cfg)"
547         for f in $files; do
548             "print_config_${f##*.}" $cfg ${pfx}${ucname} >>$f
549         done
550     done
551 }
552
553 print_enabled(){
554     test "$1" = -n && end=" " && shift || end="\n"
555     suf=$1
556     shift
557     for v; do
558         enabled $v && printf "%s$end" ${v%$suf};
559     done
560 }
561
562 append(){
563     var=$1
564     shift
565     eval "$var=\"\$$var $*\""
566 }
567
568 prepend(){
569     var=$1
570     shift
571     eval "$var=\"$* \$$var\""
572 }
573
574 add_cppflags(){
575     append CPPFLAGS $($filter_cppflags "$@")
576 }
577
578 add_cflags(){
579     append CFLAGS $($filter_cflags "$@")
580 }
581
582 add_asflags(){
583     append ASFLAGS $($filter_asflags "$@")
584 }
585
586 add_ldflags(){
587     append LDFLAGS "$@"
588 }
589
590 add_extralibs(){
591     prepend extralibs "$@"
592 }
593
594 check_cmd(){
595     log "$@"
596     "$@" >> $logfile 2>&1
597 }
598
599 check_cc(){
600     log check_cc "$@"
601     cat > $TMPC
602     log_file $TMPC
603     check_cmd $cc $CPPFLAGS $CFLAGS "$@" -c -o $TMPO $TMPC
604 }
605
606 check_cpp(){
607     log check_cpp "$@"
608     cat > $TMPC
609     log_file $TMPC
610     check_cmd $cc $CPPFLAGS $CFLAGS "$@" -E -o $TMPO $TMPC
611 }
612
613 check_as(){
614     log check_as "$@"
615     cat > $TMPC
616     log_file $TMPC
617     check_cmd $as $CPPFLAGS $ASFLAGS "$@" -c -o $TMPO $TMPC
618 }
619
620 check_asm(){
621     log check_asm "$@"
622     name="$1"
623     code="$2"
624     shift 2
625     disable $name
626     check_as "$@" <<EOF && enable $name
627 void foo(void){ __asm__ volatile($code); }
628 EOF
629 }
630
631 check_yasm(){
632     log check_yasm "$@"
633     echo "$1" > $TMPS
634     log_file $TMPS
635     shift 1
636     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
637 }
638
639 check_ld(){
640     log check_ld "$@"
641     flags=''
642     libs=''
643     for f; do
644         test "${f}" = "${f#-l}" && flags="$flags $f" || libs="$libs $f"
645     done
646     check_cc $($filter_cflags $flags) || return
647     check_cmd $ld $LDFLAGS $flags -o $TMPE $TMPO $libs $extralibs
648 }
649
650 check_cppflags(){
651     log check_cppflags "$@"
652     set -- $($filter_cppflags "$@")
653     check_cc "$@" <<EOF && append CPPFLAGS "$@"
654 int x;
655 EOF
656 }
657
658 check_cflags(){
659     log check_cflags "$@"
660     set -- $($filter_cflags "$@")
661     check_cc "$@" <<EOF && append CFLAGS "$@"
662 int x;
663 EOF
664 }
665
666 test_ldflags(){
667     log test_ldflags "$@"
668     check_ld "$@" <<EOF
669 int main(void){ return 0; }
670 EOF
671 }
672
673 check_ldflags(){
674     log check_ldflags "$@"
675     test_ldflags "$@" && add_ldflags "$@"
676 }
677
678 check_header(){
679     log check_header "$@"
680     header=$1
681     shift
682     disable_safe $header
683     check_cpp "$@" <<EOF && enable_safe $header
684 #include <$header>
685 int x;
686 EOF
687 }
688
689 check_func(){
690     log check_func "$@"
691     func=$1
692     shift
693     disable $func
694     check_ld "$@" <<EOF && enable $func
695 extern int $func();
696 int main(void){ $func(); }
697 EOF
698 }
699
700 check_mathfunc(){
701     log check_mathfunc "$@"
702     func=$1
703     shift
704     disable $func
705     check_ld "$@" <<EOF && enable $func
706 #include <math.h>
707 float foo(float f) { return $func(f); }
708 int main(void){ return 0; }
709 EOF
710 }
711
712 check_func_headers(){
713     log check_func_headers "$@"
714     headers=$1
715     funcs=$2
716     shift 2
717     {
718         for hdr in $headers; do
719             echo "#include <$hdr>"
720         done
721         for func in $funcs; do
722             echo "long check_$func(void) { return (long) $func; }"
723         done
724         echo "int main(void) { return 0; }"
725     } | check_ld "$@" && enable $funcs && enable_safe $headers
726 }
727
728 check_cpp_condition(){
729     log check_cpp_condition "$@"
730     header=$1
731     condition=$2
732     shift 2
733     check_cpp $($filter_cppflags "$@") <<EOF
734 #include <$header>
735 #if !($condition)
736 #error "unsatisfied condition: $condition"
737 #endif
738 EOF
739 }
740
741 check_lib(){
742     log check_lib "$@"
743     header="$1"
744     func="$2"
745     shift 2
746     check_header $header && check_func $func "$@" && add_extralibs "$@"
747 }
748
749 check_lib2(){
750     log check_lib2 "$@"
751     headers="$1"
752     funcs="$2"
753     shift 2
754     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
755 }
756
757 check_pkg_config(){
758     log check_pkg_config "$@"
759     pkg="$1"
760     headers="$2"
761     funcs="$3"
762     shift 3
763     $pkg_config --exists $pkg 2>/dev/null || return
764     pkg_cflags=$($pkg_config --cflags $pkg)
765     pkg_libs=$($pkg_config --libs $pkg)
766     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
767         set_safe ${pkg}_cflags $pkg_cflags   &&
768         set_safe ${pkg}_libs   $pkg_libs
769 }
770
771 check_exec(){
772     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
773 }
774
775 check_exec_crash(){
776     code=$(cat)
777
778     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
779     # are safe but may not be available everywhere.  Thus we use
780     # raise(SIGTERM) instead.  The check is run in a subshell so we
781     # can redirect the "Terminated" message from the shell.  SIGBUS
782     # is not defined by standard C so it is used conditionally.
783
784     (check_exec "$@") >> $logfile 2>&1 <<EOF
785 #include <signal.h>
786 static void sighandler(int sig){
787     raise(SIGTERM);
788 }
789 int main(void){
790     signal(SIGILL, sighandler);
791     signal(SIGFPE, sighandler);
792     signal(SIGSEGV, sighandler);
793 #ifdef SIGBUS
794     signal(SIGBUS, sighandler);
795 #endif
796     { $code }
797 }
798 EOF
799 }
800
801 check_type(){
802     log check_type "$@"
803     headers=$1
804     type=$2
805     shift 2
806     disable_safe "$type"
807     incs=""
808     for hdr in $headers; do
809         incs="$incs
810 #include <$hdr>"
811     done
812     check_cc "$@" <<EOF && enable_safe "$type"
813 $incs
814 $type v;
815 EOF
816 }
817
818 check_struct(){
819     log check_type "$@"
820     headers=$1
821     struct=$2
822     member=$3
823     shift 3
824     disable_safe "${struct}_${member}"
825     incs=""
826     for hdr in $headers; do
827         incs="$incs
828 #include <$hdr>"
829     done
830     check_cc "$@" <<EOF && enable_safe "${struct}_${member}"
831 $incs
832 const void *p = &(($struct *)0)->$member;
833 EOF
834 }
835
836 require(){
837     name="$1"
838     header="$2"
839     func="$3"
840     shift 3
841     check_lib $header $func "$@" || die "ERROR: $name not found"
842 }
843
844 require2(){
845     name="$1"
846     headers="$2"
847     func="$3"
848     shift 3
849     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
850 }
851
852 require_pkg_config(){
853     pkg="$1"
854     check_pkg_config "$@" || die "ERROR: $pkg not found"
855     add_cflags    $(get_safe ${pkg}_cflags)
856     add_extralibs $(get_safe ${pkg}_libs)
857 }
858
859 check_host_cc(){
860     log check_host_cc "$@"
861     cat > $TMPC
862     log_file $TMPC
863     check_cmd $host_cc $host_cflags "$@" -c -o $TMPO $TMPC
864 }
865
866 check_host_cflags(){
867     log check_host_cflags "$@"
868     check_host_cc "$@" <<EOF && append host_cflags "$@"
869 int x;
870 EOF
871 }
872
873 apply(){
874     file=$1
875     shift
876     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
877 }
878
879 cp_if_changed(){
880     cmp -s "$1" "$2" &&
881         echo "$2 is unchanged" ||
882         cp -f "$1" "$2"
883 }
884
885 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
886 # system-dependent things.
887
888 COMPONENT_LIST="
889     bsfs
890     decoders
891     demuxers
892     encoders
893     filters
894     hwaccels
895     indevs
896     muxers
897     outdevs
898     parsers
899     protocols
900 "
901
902 CONFIG_LIST="
903     $COMPONENT_LIST
904     aandct
905     ac3dsp
906     avcodec
907     avdevice
908     avfilter
909     avformat
910     avisynth
911     bzlib
912     crystalhd
913     dct
914     doc
915     dwt
916     dxva2
917     fastdiv
918     ffmpeg
919     ffplay
920     ffprobe
921     ffserver
922     fft
923     frei0r
924     golomb
925     gpl
926     gray
927     h264dsp
928     h264pred
929     hardcoded_tables
930     huffman
931     libcelt
932     libdc1394
933     libdirac
934     libfaac
935     libfreetype
936     libgsm
937     libmp3lame
938     libnut
939     libopencore_amrnb
940     libopencore_amrwb
941     libopencv
942     libopenjpeg
943     librtmp
944     libschroedinger
945     libspeex
946     libtheora
947     libvo_aacenc
948     libvo_amrwbenc
949     libvorbis
950     libvpx
951     libx264
952     libxavs
953     libxvid
954     lpc
955     lsp
956     mdct
957     memalign_hack
958     mlib
959     mpegaudiodsp
960     network
961     nonfree
962     pic
963     postproc
964     rdft
965     rtpdec
966     runtime_cpudetect
967     shared
968     sinewin
969     small
970     sram
971     static
972     swscale
973     swscale_alpha
974     vaapi
975     vdpau
976     version3
977     x11grab
978     zlib
979 "
980
981 THREADS_LIST='
982     pthreads
983     w32threads
984 '
985
986 ARCH_LIST='
987     alpha
988     arm
989     avr32
990     avr32_ap
991     avr32_uc
992     bfin
993     ia64
994     m68k
995     mips
996     mips64
997     parisc
998     ppc
999     ppc64
1000     s390
1001     sh4
1002     sparc
1003     sparc64
1004     tomi
1005     x86
1006     x86_32
1007     x86_64
1008 '
1009
1010 ARCH_EXT_LIST='
1011     altivec
1012     amd3dnow
1013     amd3dnowext
1014     armv5te
1015     armv6
1016     armv6t2
1017     armvfp
1018     avx
1019     iwmmxt
1020     mmi
1021     mmx
1022     mmx2
1023     neon
1024     ppc4xx
1025     sse
1026     ssse3
1027     vis
1028 '
1029
1030 HAVE_LIST_PUB='
1031     bigendian
1032     fast_unaligned
1033 '
1034
1035 HAVE_LIST="
1036     $ARCH_EXT_LIST
1037     $HAVE_LIST_PUB
1038     $THREADS_LIST
1039     aligned_stack
1040     alsa_asoundlib_h
1041     altivec_h
1042     arpa_inet_h
1043     attribute_may_alias
1044     attribute_packed
1045     bswap
1046     closesocket
1047     cmov
1048     dcbzl
1049     dev_bktr_ioctl_bt848_h
1050     dev_bktr_ioctl_meteor_h
1051     dev_ic_bt8xx_h
1052     dev_video_meteor_ioctl_meteor_h
1053     dev_video_bktr_ioctl_bt848_h
1054     dlfcn_h
1055     dlopen
1056     dos_paths
1057     ebp_available
1058     ebx_available
1059     exp2
1060     exp2f
1061     fast_64bit
1062     fast_clz
1063     fast_cmov
1064     fcntl
1065     fork
1066     getaddrinfo
1067     gethrtime
1068     GetProcessMemoryInfo
1069     GetProcessTimes
1070     getrusage
1071     gnu_as
1072     struct_rusage_ru_maxrss
1073     ibm_asm
1074     inet_aton
1075     inline_asm
1076     isatty
1077     kbhit
1078     ldbrx
1079     libdc1394_1
1080     libdc1394_2
1081     llrint
1082     llrintf
1083     local_aligned_16
1084     local_aligned_8
1085     localtime_r
1086     log2
1087     log2f
1088     loongson
1089     lrint
1090     lrintf
1091     lzo1x_999_compress
1092     machine_ioctl_bt848_h
1093     machine_ioctl_meteor_h
1094     malloc_h
1095     MapViewOfFile
1096     memalign
1097     mkstemp
1098     mmap
1099     pld
1100     posix_memalign
1101     round
1102     roundf
1103     sdl
1104     sdl_video_size
1105     setmode
1106     sndio_h
1107     socklen_t
1108     soundcard_h
1109     poll_h
1110     setrlimit
1111     strerror_r
1112     strtok_r
1113     struct_addrinfo
1114     struct_ipv6_mreq
1115     struct_sockaddr_in6
1116     struct_sockaddr_sa_len
1117     struct_sockaddr_storage
1118     symver
1119     symver_gnu_asm
1120     symver_asm_label
1121     sys_mman_h
1122     sys_resource_h
1123     sys_select_h
1124     sys_soundcard_h
1125     sys_videoio_h
1126     ten_operands
1127     termios_h
1128     threads
1129     trunc
1130     truncf
1131     vfp_args
1132     VirtualAlloc
1133     winsock2_h
1134     xform_asm
1135     xmm_clobbers
1136     yasm
1137 "
1138
1139 # options emitted with CONFIG_ prefix but not available on command line
1140 CONFIG_EXTRA="
1141     avutil
1142     gplv3
1143     lgplv3
1144 "
1145
1146 CMDLINE_SELECT="
1147     $ARCH_EXT_LIST
1148     $CONFIG_LIST
1149     $THREADS_LIST
1150     asm
1151     cross_compile
1152     debug
1153     extra_warnings
1154     logging
1155     optimizations
1156     stripping
1157     symver
1158     yasm
1159 "
1160
1161 PATHS_LIST='
1162     bindir
1163     datadir
1164     incdir
1165     libdir
1166     mandir
1167     prefix
1168     shlibdir
1169 '
1170
1171 CMDLINE_SET="
1172     $PATHS_LIST
1173     ar
1174     arch
1175     as
1176     build_suffix
1177     cc
1178     cpu
1179     cross_prefix
1180     dep_cc
1181     extra_version
1182     host_cc
1183     host_cflags
1184     host_ldflags
1185     host_libs
1186     host_os
1187     install
1188     ld
1189     logfile
1190     malloc_prefix
1191     nm
1192     pkg_config
1193     samples
1194     source_path
1195     strip
1196     sysinclude
1197     sysroot
1198     target_exec
1199     target_os
1200     target_path
1201 "
1202
1203 CMDLINE_APPEND="
1204     extra_cflags
1205 "
1206
1207 # code dependency declarations
1208
1209 # architecture extensions
1210
1211 armv5te_deps="arm"
1212 armv6_deps="arm"
1213 armv6t2_deps="arm"
1214 armvfp_deps="arm"
1215 iwmmxt_deps="arm"
1216 neon_deps="arm"
1217
1218 mmi_deps="mips"
1219
1220 altivec_deps="ppc"
1221 ppc4xx_deps="ppc"
1222
1223 vis_deps="sparc"
1224
1225 x86_64_suggest="cmov fast_cmov"
1226 amd3dnow_deps="mmx"
1227 amd3dnowext_deps="amd3dnow"
1228 mmx_deps="x86"
1229 mmx2_deps="mmx"
1230 sse_deps="mmx"
1231 ssse3_deps="sse"
1232 avx_deps="ssse3"
1233
1234 aligned_stack_if_any="ppc x86"
1235 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1236 fast_clz_if_any="alpha armv5te avr32 mips ppc x86"
1237 fast_unaligned_if_any="armv6 ppc x86"
1238
1239 need_memalign="altivec neon sse"
1240 inline_asm_deps="!tms470"
1241
1242 symver_if_any="symver_asm_label symver_gnu_asm"
1243
1244 # subsystems
1245 dct_select="rdft"
1246 mdct_select="fft"
1247 rdft_select="fft"
1248 mpegaudiodsp_select="dct"
1249
1250 # decoders / encoders / hardware accelerators
1251 aac_decoder_select="mdct sinewin"
1252 aac_encoder_select="mdct sinewin"
1253 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1254 ac3_decoder_select="mdct ac3dsp ac3_parser"
1255 ac3_encoder_select="mdct ac3dsp"
1256 ac3_fixed_encoder_select="mdct ac3dsp"
1257 alac_encoder_select="lpc"
1258 amrnb_decoder_select="lsp"
1259 amrwb_decoder_select="lsp"
1260 atrac1_decoder_select="mdct sinewin"
1261 atrac3_decoder_select="mdct"
1262 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1263 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1264 cavs_decoder_select="golomb"
1265 cook_decoder_select="mdct sinewin"
1266 cscd_decoder_suggest="zlib"
1267 dca_decoder_select="mdct"
1268 dnxhd_encoder_select="aandct"
1269 dxa_decoder_select="zlib"
1270 eac3_decoder_select="ac3_decoder"
1271 eamad_decoder_select="aandct"
1272 eatgq_decoder_select="aandct"
1273 eatqi_decoder_select="aandct"
1274 ffv1_decoder_select="golomb"
1275 flac_decoder_select="golomb"
1276 flac_encoder_select="golomb lpc"
1277 flashsv_decoder_select="zlib"
1278 flashsv_encoder_select="zlib"
1279 flashsv2_encoder_select="zlib"
1280 flv_decoder_select="h263_decoder"
1281 flv_encoder_select="h263_encoder"
1282 fraps_decoder_select="huffman"
1283 h261_encoder_select="aandct"
1284 h263_decoder_select="h263_parser"
1285 h263_encoder_select="aandct"
1286 h263_vaapi_hwaccel_select="vaapi h263_decoder"
1287 h263i_decoder_select="h263_decoder"
1288 h263p_encoder_select="h263_encoder"
1289 h264_decoder_select="golomb h264dsp h264pred"
1290 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
1291 h264_dxva2_hwaccel_deps="dxva2api_h"
1292 h264_dxva2_hwaccel_select="dxva2 h264_decoder"
1293 h264_vaapi_hwaccel_select="vaapi"
1294 h264_vdpau_decoder_select="vdpau h264_decoder"
1295 imc_decoder_select="fft mdct sinewin"
1296 jpegls_decoder_select="golomb"
1297 jpegls_encoder_select="golomb"
1298 ljpeg_encoder_select="aandct"
1299 loco_decoder_select="golomb"
1300 mjpeg_encoder_select="aandct"
1301 mlp_decoder_select="mlp_parser"
1302 mp1_decoder_select="mpegaudiodsp"
1303 mp2_decoder_select="mpegaudiodsp"
1304 mp3adu_decoder_select="mpegaudiodsp"
1305 mp3_decoder_select="mpegaudiodsp"
1306 mp3on4_decoder_select="mpegaudiodsp"
1307 mp1float_decoder_select="mpegaudiodsp"
1308 mp2float_decoder_select="mpegaudiodsp"
1309 mp3adufloat_decoder_select="mpegaudiodsp"
1310 mp3float_decoder_select="mpegaudiodsp"
1311 mp3on4float_decoder_select="mpegaudiodsp"
1312 mpeg1video_encoder_select="aandct"
1313 mpeg2video_encoder_select="aandct"
1314 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1315 mpeg4_encoder_select="h263_encoder"
1316 mpeg_vdpau_decoder_select="vdpau mpegvideo_decoder"
1317 mpeg1_vdpau_decoder_select="vdpau mpeg1video_decoder"
1318 mpeg1_vdpau_hwaccel_select="vdpau mpeg1video_decoder"
1319 mpeg2_crystalhd_decoder_select="crystalhd"
1320 mpeg2_dxva2_hwaccel_deps="dxva2api_h"
1321 mpeg2_dxva2_hwaccel_select="dxva2 mpeg2video_decoder"
1322 mpeg2_vdpau_hwaccel_select="vdpau mpeg2video_decoder"
1323 mpeg2_vaapi_hwaccel_select="vaapi mpeg2video_decoder"
1324 mpeg4_crystalhd_decoder_select="crystalhd"
1325 mpeg4_vaapi_hwaccel_select="vaapi mpeg4_decoder"
1326 mpeg4_vdpau_decoder_select="vdpau mpeg4_decoder"
1327 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1328 mpeg_xvmc_decoder_select="mpegvideo_decoder"
1329 msmpeg4_crystalhd_decoder_select="crystalhd"
1330 msmpeg4v1_decoder_select="h263_decoder"
1331 msmpeg4v1_encoder_select="h263_encoder"
1332 msmpeg4v2_decoder_select="h263_decoder"
1333 msmpeg4v2_encoder_select="h263_encoder"
1334 msmpeg4v3_decoder_select="h263_decoder"
1335 msmpeg4v3_encoder_select="h263_encoder"
1336 nellymoser_decoder_select="mdct sinewin"
1337 nellymoser_encoder_select="mdct sinewin"
1338 png_decoder_select="zlib"
1339 png_encoder_select="zlib"
1340 qcelp_decoder_select="lsp"
1341 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1342 ra_144_encoder_select="lpc"
1343 rv10_decoder_select="h263_decoder"
1344 rv10_encoder_select="h263_encoder"
1345 rv20_decoder_select="h263_decoder"
1346 rv20_encoder_select="h263_encoder"
1347 rv30_decoder_select="golomb h264pred"
1348 rv40_decoder_select="golomb h264pred"
1349 shorten_decoder_select="golomb"
1350 sipr_decoder_select="lsp"
1351 snow_decoder_select="dwt"
1352 snow_encoder_select="aandct dwt"
1353 sonic_decoder_select="golomb"
1354 sonic_encoder_select="golomb"
1355 sonic_ls_encoder_select="golomb"
1356 svq1_encoder_select="aandct"
1357 svq3_decoder_select="golomb h264dsp h264pred"
1358 svq3_decoder_suggest="zlib"
1359 theora_decoder_select="vp3_decoder"
1360 tiff_decoder_suggest="zlib"
1361 tiff_encoder_suggest="zlib"
1362 truehd_decoder_select="mlp_decoder"
1363 tscc_decoder_select="zlib"
1364 twinvq_decoder_select="mdct lsp sinewin"
1365 vc1_decoder_select="h263_decoder"
1366 vc1_crystalhd_decoder_select="crystalhd"
1367 vc1_dxva2_hwaccel_deps="dxva2api_h DXVA_PictureParameters_wDecodedPictureIndex"
1368 vc1_dxva2_hwaccel_select="dxva2 vc1_decoder"
1369 vc1_vaapi_hwaccel_select="vaapi vc1_decoder"
1370 vc1_vdpau_decoder_select="vdpau vc1_decoder"
1371 vorbis_decoder_select="mdct"
1372 vorbis_encoder_select="mdct"
1373 vp6_decoder_select="huffman"
1374 vp6a_decoder_select="vp6_decoder"
1375 vp6f_decoder_select="vp6_decoder"
1376 vp8_decoder_select="h264pred"
1377 wmapro_decoder_select="mdct sinewin"
1378 wmav1_decoder_select="mdct sinewin"
1379 wmav1_encoder_select="mdct sinewin"
1380 wmav2_decoder_select="mdct sinewin"
1381 wmav2_encoder_select="mdct sinewin"
1382 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1383 wmv1_decoder_select="h263_decoder"
1384 wmv1_encoder_select="h263_encoder"
1385 wmv2_decoder_select="h263_decoder"
1386 wmv2_encoder_select="h263_encoder"
1387 wmv3_decoder_select="vc1_decoder"
1388 wmv3_crystalhd_decoder_select="crystalhd"
1389 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1390 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1391 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
1392 zlib_decoder_select="zlib"
1393 zlib_encoder_select="zlib"
1394 zmbv_decoder_select="zlib"
1395 zmbv_encoder_select="zlib"
1396
1397 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
1398 vaapi_deps="va_va_h"
1399 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1400
1401 # parsers
1402 h264_parser_select="golomb h264dsp h264pred"
1403
1404 # external libraries
1405 libcelt_decoder_deps="libcelt"
1406 libdirac_decoder_deps="libdirac !libschroedinger"
1407 libdirac_encoder_deps="libdirac"
1408 libfaac_encoder_deps="libfaac"
1409 libgsm_decoder_deps="libgsm"
1410 libgsm_encoder_deps="libgsm"
1411 libgsm_ms_decoder_deps="libgsm"
1412 libgsm_ms_encoder_deps="libgsm"
1413 libmp3lame_encoder_deps="libmp3lame"
1414 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1415 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1416 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1417 libopenjpeg_decoder_deps="libopenjpeg"
1418 libschroedinger_decoder_deps="libschroedinger"
1419 libschroedinger_encoder_deps="libschroedinger"
1420 libspeex_decoder_deps="libspeex"
1421 libtheora_encoder_deps="libtheora"
1422 libvo_aacenc_encoder_deps="libvo_aacenc"
1423 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1424 libvorbis_encoder_deps="libvorbis"
1425 libvpx_decoder_deps="libvpx"
1426 libvpx_encoder_deps="libvpx"
1427 libx264_encoder_deps="libx264"
1428 libxavs_encoder_deps="libxavs"
1429 libxvid_encoder_deps="libxvid"
1430
1431 # demuxers / muxers
1432 ac3_demuxer_select="ac3_parser"
1433 asf_stream_muxer_select="asf_muxer"
1434 avisynth_demuxer_deps="avisynth"
1435 dirac_demuxer_select="dirac_parser"
1436 eac3_demuxer_select="ac3_parser"
1437 flac_demuxer_select="flac_parser"
1438 ipod_muxer_select="mov_muxer"
1439 libnut_demuxer_deps="libnut"
1440 libnut_muxer_deps="libnut"
1441 matroska_audio_muxer_select="matroska_muxer"
1442 matroska_demuxer_suggest="zlib bzlib"
1443 mov_demuxer_suggest="zlib"
1444 mp3_demuxer_select="mpegaudio_parser"
1445 mp4_muxer_select="mov_muxer"
1446 mpegtsraw_demuxer_select="mpegts_demuxer"
1447 mxf_d10_muxer_select="mxf_muxer"
1448 ogg_demuxer_select="golomb"
1449 psp_muxer_select="mov_muxer"
1450 rtp_demuxer_select="sdp_demuxer"
1451 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1452 rtsp_demuxer_select="http_protocol rtpdec"
1453 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol"
1454 sap_demuxer_select="sdp_demuxer"
1455 sap_muxer_select="rtp_muxer rtp_protocol"
1456 sdp_demuxer_select="rtpdec"
1457 spdif_muxer_select="aac_parser"
1458 tg2_muxer_select="mov_muxer"
1459 tgp_muxer_select="mov_muxer"
1460 w64_demuxer_deps="wav_demuxer"
1461
1462 # indevs / outdevs
1463 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1464 alsa_outdev_deps="alsa_asoundlib_h"
1465 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1466 dv1394_indev_deps="dv1394 dv_demuxer"
1467 fbdev_indev_deps="linux_fb_h"
1468 jack_indev_deps="jack_jack_h sem_timedwait"
1469 libdc1394_indev_deps="libdc1394"
1470 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1471 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1472 sndio_indev_deps="sndio_h"
1473 sndio_outdev_deps="sndio_h"
1474 v4l_indev_deps="linux_videodev_h"
1475 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1476 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1477 vfwcap_indev_extralibs="-lavicap32"
1478 x11_grab_device_indev_deps="x11grab XShmCreateImage"
1479 x11_grab_device_indev_extralibs="-lX11 -lXext -lXfixes"
1480
1481 # protocols
1482 gopher_protocol_deps="network"
1483 http_protocol_deps="network"
1484 http_protocol_select="tcp_protocol"
1485 mmsh_protocol_select="http_protocol"
1486 mmst_protocol_deps="network"
1487 rtmp_protocol_select="tcp_protocol"
1488 rtp_protocol_select="udp_protocol"
1489 tcp_protocol_deps="network"
1490 udp_protocol_deps="network pthreads"
1491
1492 # filters
1493 blackframe_filter_deps="gpl"
1494 cropdetect_filter_deps="gpl"
1495 drawtext_filter_deps="libfreetype"
1496 frei0r_filter_deps="frei0r dlopen strtok_r"
1497 frei0r_src_filter_deps="frei0r dlopen strtok_r"
1498 hqdn3d_filter_deps="gpl"
1499 movie_filter_deps="avcodec avformat"
1500 mp_filter_deps="gpl avcodec"
1501 ocv_filter_deps="libopencv"
1502 scale_filter_deps="swscale"
1503 yadif_filter_deps="gpl"
1504
1505 # libraries
1506 avdevice_deps="avcodec avformat"
1507 avformat_deps="avcodec"
1508 postproc_deps="gpl"
1509
1510 # programs
1511 ffmpeg_deps="avcodec avformat swscale"
1512 ffmpeg_select="buffer_filter"
1513 ffplay_deps="avcodec avformat swscale sdl"
1514 ffplay_select="rdft"
1515 ffprobe_deps="avcodec avformat"
1516 ffserver_deps="avformat ffm_muxer fork rtp_protocol rtsp_demuxer"
1517 ffserver_extralibs='$ldl'
1518
1519 doc_deps="texi2html"
1520
1521 # tests
1522
1523 test_deps(){
1524     suf1=$1
1525     suf2=$2
1526     shift 2
1527     for v; do
1528         dep=${v%=*}
1529         tests=${v#*=}
1530         for name in ${tests}; do
1531             eval ${name}_test_deps="'${dep}$suf1 ${dep}$suf2'"
1532         done
1533     done
1534 }
1535
1536 set_ne_test_deps(){
1537     eval ${1}_be_test_deps="bigendian"
1538     eval ${1}_le_test_deps="!bigendian"
1539 }
1540
1541 test_deps _encoder _decoder                                             \
1542     adpcm_g726=g726                                                     \
1543     adpcm_ima_qt                                                        \
1544     adpcm_ima_wav                                                       \
1545     adpcm_ms                                                            \
1546     adpcm_swf                                                           \
1547     adpcm_yamaha=adpcm_yam                                              \
1548     alac                                                                \
1549     asv1                                                                \
1550     asv2                                                                \
1551     bmp                                                                 \
1552     dnxhd="dnxhd_1080i dnxhd_720p dnxhd_720p_rd"                        \
1553     dvvideo="dv dv50"                                                   \
1554     ffv1                                                                \
1555     flac                                                                \
1556     flashsv                                                             \
1557     flv                                                                 \
1558     gif                                                                 \
1559     h261                                                                \
1560     h263="h263 h263p"                                                   \
1561     huffyuv                                                             \
1562     jpegls                                                              \
1563     mjpeg="jpg mjpeg ljpeg"                                             \
1564     mp2                                                                 \
1565     mpeg1video="mpeg mpeg1b"                                            \
1566     mpeg2video="mpeg2 mpeg2thread"                                      \
1567     mpeg4="mpeg4 mpeg4adv mpeg4nr mpeg4thread error rc"                 \
1568     msmpeg4v3=msmpeg4                                                   \
1569     msmpeg4v2                                                           \
1570     pbm=pbmpipe                                                         \
1571     pcx                                                                 \
1572     pgm="pgm pgmpipe"                                                   \
1573     png                                                                 \
1574     ppm="ppm ppmpipe"                                                   \
1575     rawvideo="rgb yuv"                                                  \
1576     roq                                                                 \
1577     rv10                                                                \
1578     rv20                                                                \
1579     sgi                                                                 \
1580     snow="snow snowll"                                                  \
1581     svq1                                                                \
1582     targa=tga                                                           \
1583     tiff                                                                \
1584     wmav1                                                               \
1585     wmav2                                                               \
1586     wmv1                                                                \
1587     wmv2                                                                \
1588
1589 test_deps _muxer _demuxer                                               \
1590     aiff                                                                \
1591     pcm_alaw=alaw                                                       \
1592     asf                                                                 \
1593     au                                                                  \
1594     avi                                                                 \
1595     dv=dv_fmt                                                           \
1596     ffm                                                                 \
1597     flv=flv_fmt                                                         \
1598     gxf                                                                 \
1599     matroska=mkv                                                        \
1600     mmf                                                                 \
1601     mov                                                                 \
1602     pcm_mulaw=mulaw                                                     \
1603     mxf                                                                 \
1604     nut                                                                 \
1605     ogg                                                                 \
1606     rawvideo=pixfmt                                                     \
1607     rm                                                                  \
1608     swf                                                                 \
1609     mpegts=ts                                                           \
1610     voc                                                                 \
1611     wav                                                                 \
1612     yuv4mpegpipe=yuv4mpeg                                               \
1613
1614 ac3_fixed_test_deps="ac3_fixed_encoder ac3_decoder rm_muxer rm_demuxer"
1615 mpg_test_deps="mpeg1system_muxer mpegps_demuxer"
1616
1617 set_ne_test_deps pixdesc
1618 set_ne_test_deps pixfmts_copy
1619 set_ne_test_deps pixfmts_crop
1620 set_ne_test_deps pixfmts_hflip
1621 set_ne_test_deps pixfmts_null
1622 set_ne_test_deps pixfmts_pad
1623 set_ne_test_deps pixfmts_scale
1624 set_ne_test_deps pixfmts_vflip
1625
1626 # default parameters
1627
1628 logfile="config.log"
1629
1630 # installation paths
1631 prefix_default="/usr/local"
1632 bindir_default='${prefix}/bin'
1633 datadir_default='${prefix}/share/ffmpeg'
1634 incdir_default='${prefix}/include'
1635 libdir_default='${prefix}/lib'
1636 mandir_default='${prefix}/share/man'
1637 shlibdir_default="$libdir_default"
1638
1639 # toolchain
1640 ar_default="ar"
1641 cc_default="gcc"
1642 cc_version=\"unknown\"
1643 host_cc_default="gcc"
1644 install="install"
1645 ln_s="ln -sf"
1646 nm_default="nm"
1647 objformat="elf"
1648 pkg_config_default=pkg-config
1649 ranlib="ranlib"
1650 strip_default="strip"
1651 yasmexe="yasm"
1652 nogas=":"
1653
1654 nm_opts='-g'
1655
1656 # machine
1657 arch_default=$(uname -m)
1658 cpu="generic"
1659
1660 # OS
1661 target_os_default=$(tolower $(uname -s))
1662 host_os=$target_os_default
1663
1664 # configurable options
1665 enable avcodec
1666 enable avdevice
1667 enable avfilter
1668 enable avformat
1669 enable avutil
1670 enable asm
1671 enable debug
1672 enable doc
1673 enable fastdiv
1674 enable ffmpeg
1675 enable ffplay
1676 enable ffprobe
1677 enable ffserver
1678 enable network
1679 enable optimizations
1680 enable postproc
1681 enable protocols
1682 enable static
1683 enable stripping
1684 enable swscale
1685 enable swscale_alpha
1686
1687 # build settings
1688 SHFLAGS='-shared -Wl,-soname,$$(@F)'
1689 FFSERVERLDFLAGS=-Wl,-E
1690 LIBPREF="lib"
1691 LIBSUF=".a"
1692 FULLNAME='$(NAME)$(BUILDSUF)'
1693 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
1694 SLIBPREF="lib"
1695 SLIBSUF=".so"
1696 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
1697 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
1698 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
1699 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
1700
1701 CC_O='-o $@'
1702
1703 host_cflags='-D_ISOC99_SOURCE -O3 -g -Wall'
1704 host_libs='-lm'
1705
1706 target_path='$(CURDIR)'
1707
1708 # since the object filename is not given with the -MM flag, the compiler
1709 # is only able to print the basename, and we must add the path ourselves
1710 DEPEND_CMD='$(DEPCC) $(DEPFLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
1711 DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -MM'
1712
1713 # find source path
1714 source_path="$(dirname "$0")"
1715 enable source_path_used
1716 if test -f configure; then
1717     source_path="$(pwd)"
1718     disable source_path_used
1719 else
1720     source_path="$(cd "$source_path"; pwd)"
1721     echo "$source_path" | grep -q '[[:blank:]]' &&
1722         die "Out of tree builds are impossible with whitespace in source path."
1723     test -e "$source_path/config.h" &&
1724         die "Out of tree builds are impossible with config.h in source dir."
1725 fi
1726
1727 for v in "$@"; do
1728     r=${v#*=}
1729     l=${v%"$r"}
1730     r=$(sh_quote "$r")
1731     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
1732 done
1733
1734 find_things(){
1735     thing=$1
1736     pattern=$2
1737     file=$source_path/$3
1738     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
1739 }
1740
1741 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
1742 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
1743 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
1744 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
1745 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
1746 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
1747 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
1748 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
1749 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
1750 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
1751 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
1752
1753 find_tests(){
1754     map "echo ${2}\${v}_test" $(ls "$source_path"/tests/ref/$1 | grep -v '[^-a-z0-9_]')
1755 }
1756
1757 ACODEC_TESTS=$(find_tests acodec)
1758 VCODEC_TESTS=$(find_tests vsynth1)
1759 LAVF_TESTS=$(find_tests lavf)
1760 LAVFI_TESTS=$(find_tests lavfi)
1761 SEEK_TESTS=$(find_tests seek seek_)
1762
1763 pcm_test_deps=$(map 'echo ${v%_*}_decoder $v' $(filter pcm_* $ENCODER_LIST))
1764
1765 for n in $COMPONENT_LIST; do
1766     v=$(toupper ${n%s})_LIST
1767     eval enable \$$v
1768     eval ${n}_if_any="\$$v"
1769 done
1770
1771 enable $ARCH_EXT_LIST $ACODEC_TESTS $VCODEC_TESTS $LAVF_TESTS $LAVFI_TESTS $SEEK_TESTS
1772
1773 die_unknown(){
1774     echo "Unknown option \"$1\"."
1775     echo "See $0 --help for available options."
1776     exit 1
1777 }
1778
1779 show_list() {
1780     suffix=_$1
1781     shift
1782     echo $* | sed s/$suffix//g | tr ' ' '\n' | sort | pr -3 -t
1783     exit 0
1784 }
1785
1786 for opt do
1787     optval="${opt#*=}"
1788     case "$opt" in
1789     --extra-ldflags=*) add_ldflags $optval
1790     ;;
1791     --extra-libs=*) add_extralibs $optval
1792     ;;
1793     --disable-devices) disable $INDEV_LIST $OUTDEV_LIST
1794     ;;
1795     --enable-debug=*) debuglevel="$optval"
1796     ;;
1797     --disable-everything)
1798     map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
1799     ;;
1800     --enable-*=*|--disable-*=*)
1801     eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
1802     is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
1803     eval list=\$$(toupper $thing)_LIST
1804     name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
1805     $action $(filter "$name" $list)
1806     ;;
1807     --enable-?*|--disable-?*)
1808     eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
1809     if is_in $option $COMPONENT_LIST; then
1810         test $action = disable && action=unset
1811         eval $action \$$(toupper ${option%s})_LIST
1812     elif is_in $option $CMDLINE_SELECT; then
1813         $action $option
1814     else
1815         die_unknown $opt
1816     fi
1817     ;;
1818     --list-*)
1819         NAME="${opt#--list-}"
1820         is_in $NAME $COMPONENT_LIST || die_unknown $opt
1821         NAME=${NAME%s}
1822         eval show_list $NAME \$$(toupper $NAME)_LIST
1823     ;;
1824     --help|-h) show_help
1825     ;;
1826     *)
1827     optname="${opt%%=*}"
1828     optname="${optname#--}"
1829     optname=$(echo "$optname" | sed 's/-/_/g')
1830     if is_in $optname $CMDLINE_SET; then
1831         eval $optname='$optval'
1832     elif is_in $optname $CMDLINE_APPEND; then
1833         append $optname "$optval"
1834     else
1835          die_unknown $opt
1836     fi
1837     ;;
1838     esac
1839 done
1840
1841 disabled logging && logfile=/dev/null
1842
1843 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
1844 set >> $logfile
1845
1846 test -n "$cross_prefix" && enable cross_compile
1847
1848 if enabled cross_compile; then
1849     test -n "$arch" && test -n "$target_os" ||
1850         die "Must specify target arch and OS when cross-compiling"
1851 fi
1852
1853 set_default arch target_os
1854
1855 ar_default="${cross_prefix}${ar_default}"
1856 cc_default="${cross_prefix}${cc_default}"
1857 nm_default="${cross_prefix}${nm_default}"
1858 pkg_config_default="${cross_prefix}${pkg_config_default}"
1859 ranlib="${cross_prefix}${ranlib}"
1860 strip_default="${cross_prefix}${strip_default}"
1861
1862 sysinclude_default="${sysroot}/usr/include"
1863
1864 set_default cc nm pkg_config strip sysinclude
1865 enabled cross_compile || host_cc_default=$cc
1866 set_default host_cc
1867
1868 if ! $pkg_config --version >/dev/null 2>&1; then
1869     warn "$pkg_config not found, library detection may fail."
1870     pkg_config=false
1871 fi
1872
1873 exesuf() {
1874     case $1 in
1875         mingw32*|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
1876     esac
1877 }
1878
1879 EXESUF=$(exesuf $target_os)
1880 HOSTEXESUF=$(exesuf $host_os)
1881
1882 # set temporary file name
1883 : ${TMPDIR:=$TEMPDIR}
1884 : ${TMPDIR:=$TMP}
1885 : ${TMPDIR:=/tmp}
1886
1887 if ! check_cmd mktemp -u XXXXXX; then
1888     # simple replacement for missing mktemp
1889     # NOT SAFE FOR GENERAL USE
1890     mktemp(){
1891         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
1892     }
1893 fi
1894
1895 tmpfile(){
1896     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
1897         (set -C; exec > $tmp) 2>/dev/null ||
1898         die "Unable to create temporary file in $TMPDIR."
1899     append TMPFILES $tmp
1900     eval $1=$tmp
1901 }
1902
1903 trap 'rm -f -- $TMPFILES' EXIT
1904
1905 tmpfile TMPC  .c
1906 tmpfile TMPE  $EXESUF
1907 tmpfile TMPH  .h
1908 tmpfile TMPO  .o
1909 tmpfile TMPS  .S
1910 tmpfile TMPV  .ver
1911 tmpfile TMPSH .sh
1912 tmpfile TMPASM .asm
1913
1914 unset -f mktemp
1915
1916 chmod +x $TMPE
1917
1918 # make sure we can execute files in $TMPDIR
1919 cat > $TMPSH 2>> $logfile <<EOF
1920 #! /bin/sh
1921 EOF
1922 chmod +x $TMPSH >> $logfile 2>&1
1923 if ! $TMPSH >> $logfile 2>&1; then
1924     cat <<EOF
1925 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
1926 variable to another directory and make sure that it is not mounted noexec.
1927 EOF
1928     die "Sanity test failed."
1929 fi
1930
1931 filter_cflags=echo
1932 filter_cppflags=echo
1933 filter_asflags=echo
1934
1935 if   $cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
1936     cc_type=llvm_gcc
1937     cc_version=__VERSION__
1938     gcc_extra_ver=$(expr "$($cc --version | head -n1)" : '.*\((.*)\)')
1939     cc_ident="llvm-gcc $($cc -dumpversion) $gcc_extra_ver"
1940     CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1941     AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1942     speed_cflags='-O3'
1943     size_cflags='-Os'
1944 elif $cc -v 2>&1 | grep -qi ^gcc; then
1945     cc_type=gcc
1946     cc_version=__VERSION__
1947     gcc_version=$($cc --version | head -n1)
1948     gcc_basever=$($cc -dumpversion)
1949     gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
1950     gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
1951     cc_ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
1952     if ! $cc -dumpversion | grep -q '^2\.'; then
1953         CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1954         AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1955     fi
1956     speed_cflags='-O3'
1957     size_cflags='-Os'
1958 elif $cc --version 2>/dev/null | grep -q Intel; then
1959     cc_type=icc
1960     cc_version="AV_STRINGIFY(__INTEL_COMPILER)"
1961     cc_ident=$($cc --version | head -n1)
1962     icc_version=$($cc -dumpversion)
1963     CC_DEPFLAGS='-MMD'
1964     AS_DEPFLAGS='-MMD'
1965     speed_cflags='-O3'
1966     size_cflags='-Os'
1967     noopt_cflags='-O1'
1968 elif $cc -v 2>&1 | grep -q xlc; then
1969     cc_type=xlc
1970     cc_version="AV_STRINGIFY(__IBMC__)"
1971     cc_ident=$($cc -qversion 2>/dev/null | head -n1)
1972     speed_cflags='-O5'
1973     size_cflags='-O5 -qcompact'
1974 elif $cc -V 2>/dev/null | grep -q Compaq; then
1975     cc_type=ccc
1976     cc_version="AV_STRINGIFY(__DECC_VER)"
1977     cc_ident=$($cc -V | head -n1 | cut -d' ' -f1-3)
1978     DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -M'
1979     debuglevel=3
1980     add_ldflags -Wl,-z,now # calls to libots crash without this
1981     speed_cflags='-fast'
1982     size_cflags='-O1'
1983 elif $cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
1984     test -d "$sysroot" || die "No valid sysroot specified."
1985     cc_type=armcc
1986     cc_version="AV_STRINGIFY(__ARMCC_VERSION)"
1987     cc_ident=$($cc --vsn | head -n1)
1988     armcc_conf="$PWD/armcc.conf"
1989     $cc --arm_linux_configure                 \
1990         --arm_linux_config_file="$armcc_conf" \
1991         --configure_sysroot="$sysroot"        \
1992         --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
1993         die "Error creating armcc configuration file."
1994     $cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
1995     cc="$cc --arm_linux_config_file=$armcc_conf --translate_gcc"
1996     as_default="${cross_prefix}gcc"
1997     CC_DEPFLAGS='-MMD'
1998     AS_DEPFLAGS='-MMD'
1999     speed_cflags='-O3'
2000     size_cflags='-Os'
2001     filter_asflags="filter_out -W${armcc_opt}*"
2002 elif $cc -version 2>/dev/null | grep -q TMS470; then
2003     cc_type=tms470
2004     cc_version="AV_STRINGIFY(__TI_COMPILER_VERSION__)"
2005     cc_ident=$($cc -version | head -n1 | tr -s ' ')
2006     cc="$cc --gcc --abi=eabi -eo=.o -mc -me"
2007     CC_O='-fr=$(@D)'
2008     as_default="${cross_prefix}gcc"
2009     ld_default="${cross_prefix}gcc"
2010     TMPO=$(basename $TMPC .c).o
2011     append TMPFILES $TMPO
2012     add_cflags -D__gnuc_va_list=va_list -D__USER_LABEL_PREFIX__=
2013     CC_DEPFLAGS='-ppa -ppd=$(@:.o=.d)'
2014     AS_DEPFLAGS='-MMD'
2015     speed_cflags='-O3 -mf=5'
2016     size_cflags='-O3 -mf=2'
2017     filter_cflags=tms470_flags
2018     tms470_flags(){
2019         for flag; do
2020             case $flag in
2021                 -march=*|-mcpu=*)
2022                     case "${flag#*=}" in
2023                         armv7-a|cortex-a*)      echo -mv=7a8 ;;
2024                         armv7-r|cortex-r*)      echo -mv=7r4 ;;
2025                         armv7-m|cortex-m*)      echo -mv=7m3 ;;
2026                         armv6*|arm11*)          echo -mv=6   ;;
2027                         armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2028                                                 echo -mv=5e  ;;
2029                         armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2030                     esac
2031                     ;;
2032                 -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2033                 -mfpu=vfp)      echo --float_support=vfpv2        ;;
2034                 -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2035                 -msoft-float)   echo --float_support=vfplib       ;;
2036                 -O[0-3]|-mf=*)  echo $flag                        ;;
2037                 -g)             echo -g -mn                       ;;
2038                 -pds=*)         echo $flag                        ;;
2039             esac
2040         done
2041     }
2042 elif $cc -v 2>&1 | grep -q clang; then
2043     cc_type=clang
2044     $cc -dM -E $TMPC | grep -q __clang_version__ &&
2045         cc_version=__clang_version__ || cc_version=__VERSION__
2046     cc_ident=$($cc --version | head -n1)
2047     CC_DEPFLAGS='-MMD'
2048     AS_DEPFLAGS='-MMD'
2049     speed_cflags='-O3'
2050     size_cflags='-Os'
2051 elif $cc -V 2>&1 | grep -q Sun; then
2052     cc_type=suncc
2053     cc_version="AV_STRINGIFY(__SUNPRO_C)"
2054     cc_ident=$($cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2055     DEPEND_CMD='$(DEPCC) $(DEPFLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2056     DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -xM1'
2057     speed_cflags='-O5'
2058     size_cflags='-O5 -xspace'
2059     filter_cflags=suncc_flags
2060     suncc_flags(){
2061         for flag; do
2062             case $flag in
2063                 -march=*|-mcpu=*)
2064                     case "${flag#*=}" in
2065                         native)                   echo -xtarget=native       ;;
2066                         v9|niagara)               echo -xarch=sparc          ;;
2067                         ultrasparc)               echo -xarch=sparcvis       ;;
2068                         ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2069                         i586|pentium)             echo -xchip=pentium        ;;
2070                         i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2071                         pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2072                         pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2073                         pentium4*)          echo -xtarget=pentium4           ;;
2074                         prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2075                         *-sse3)             echo -xarch=sse3                 ;;
2076                         core2)              echo -xarch=ssse3 -xchip=core2   ;;
2077                         amdfam10|barcelona)       echo -xarch=sse4_1         ;;
2078                         athlon-4|athlon-[mx]p)    echo -xarch=ssea           ;;
2079                         k8|opteron|athlon64|athlon-fx)
2080                                                   echo -xarch=sse2a          ;;
2081                         athlon*)                  echo -xarch=pentium_proa   ;;
2082                     esac
2083                     ;;
2084                 -std=c99)             echo -xc99              ;;
2085                 -fomit-frame-pointer) echo -xregs=frameptr    ;;
2086                 -fPIC)                echo -KPIC -xcode=pic32 ;;
2087                 -W*,*)                echo $flag              ;;
2088                 -f*-*|-W*)                                    ;;
2089                 *)                    echo $flag              ;;
2090             esac
2091         done
2092     }
2093 elif $cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2094     cc_type=pathscale
2095     cc_version=__PATHSCALE__
2096     cc_ident=$($cc -v 2>&1 | head -n1 | tr -d :)
2097     CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2098     AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2099     speed_cflags='-O2'
2100     size_cflags='-Os'
2101 elif $cc -v 2>&1 | grep -q Open64; then
2102     cc_type=open64
2103     cc_version=__OPEN64__
2104     cc_ident=$($cc -v 2>&1 | head -n1 | tr -d :)
2105     CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2106     AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2107     speed_cflags='-O2'
2108     size_cflags='-Os'
2109 fi
2110
2111 test -n "$cc_type" && enable $cc_type ||
2112     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2113
2114 : ${as_default:=$cc}
2115 : ${dep_cc_default:=$cc}
2116 : ${ld_default:=$cc}
2117 set_default ar as dep_cc ld
2118
2119 test -n "$CC_DEPFLAGS" || CCDEP=$DEPEND_CMD
2120 test -n "$AS_DEPFLAGS" || ASDEP=$DEPEND_CMD
2121
2122 add_cflags $extra_cflags
2123 add_asflags $extra_cflags
2124
2125 if test -n "$sysroot"; then
2126     case "$cc_type" in
2127         gcc|llvm_gcc|clang)
2128             add_cppflags --sysroot="$sysroot"
2129             add_ldflags --sysroot="$sysroot"
2130         ;;
2131         tms470)
2132             add_cppflags -I"$sysinclude"
2133             add_ldflags  --sysroot="$sysroot"
2134         ;;
2135     esac
2136 fi
2137
2138 if test "$cpu" = host; then
2139     enabled cross_compile && die "--cpu=host makes no sense when cross-compiling."
2140
2141     case "$cc_type" in
2142         gcc|llvm_gcc)
2143             check_native(){
2144                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2145                 sed -n "/$1=/{
2146                             s/.*$1=\\([^ ]*\\).*/\\1/
2147                             p
2148                             q
2149                         }" $TMPE
2150             }
2151             cpu=$(check_native -march || check_native -mcpu)
2152         ;;
2153     esac
2154
2155     test "${cpu:-host}" = host && die "--cpu=host not supported with compiler $cc"
2156 fi
2157
2158 # Deal with common $arch aliases
2159 case "$arch" in
2160     arm*)
2161         arch="arm"
2162     ;;
2163     mips|mipsel|IP*)
2164         arch="mips"
2165     ;;
2166     mips64*)
2167         arch="mips"
2168         subarch="mips64"
2169     ;;
2170     parisc|hppa)
2171         arch="parisc"
2172     ;;
2173     parisc64|hppa64)
2174         arch="parisc"
2175         subarch="parisc64"
2176     ;;
2177     "Power Macintosh"|ppc|powerpc)
2178         arch="ppc"
2179     ;;
2180     ppc64|powerpc64)
2181         arch="ppc"
2182         subarch="ppc64"
2183     ;;
2184     s390|s390x)
2185         arch="s390"
2186     ;;
2187     sh4|sh)
2188         arch="sh4"
2189     ;;
2190     sun4u|sparc64)
2191         arch="sparc"
2192         subarch="sparc64"
2193     ;;
2194     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
2195         arch="x86"
2196     ;;
2197 esac
2198
2199 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2200 enable $arch
2201
2202 # Add processor-specific flags
2203 if test "$cpu" = generic; then
2204     : do nothing
2205 elif enabled ppc; then
2206
2207     case $(tolower $cpu) in
2208         601|ppc601|powerpc601)
2209             cpuflags="-mcpu=601"
2210             disable altivec
2211         ;;
2212         603*|ppc603*|powerpc603*)
2213             cpuflags="-mcpu=603"
2214             disable altivec
2215         ;;
2216         604*|ppc604*|powerpc604*)
2217             cpuflags="-mcpu=604"
2218             disable altivec
2219         ;;
2220         g3|75*|ppc75*|powerpc75*)
2221             cpuflags="-mcpu=750 -mpowerpc-gfxopt"
2222             disable altivec
2223         ;;
2224         g4|745*|ppc745*|powerpc745*)
2225             cpuflags="-mcpu=7450 -mpowerpc-gfxopt"
2226         ;;
2227         74*|ppc74*|powerpc74*)
2228             cpuflags="-mcpu=7400 -mpowerpc-gfxopt"
2229         ;;
2230         g5|970|ppc970|powerpc970|power4*)
2231             cpuflags="-mcpu=970 -mpowerpc-gfxopt -mpowerpc64"
2232         ;;
2233         cell)
2234             cpuflags="-mcpu=cell"
2235             enable ldbrx
2236         ;;
2237         e500v2)
2238             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
2239             disable altivec
2240         ;;
2241         e500)
2242             cpuflags="-mcpu=8540 -mhard-float"
2243             disable altivec
2244         ;;
2245     esac
2246
2247 elif enabled x86; then
2248
2249     case $cpu in
2250         i[345]86|pentium)
2251             cpuflags="-march=$cpu"
2252             disable mmx
2253         ;;
2254         # targets that do NOT support conditional mov (cmov)
2255         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
2256             cpuflags="-march=$cpu"
2257             disable cmov
2258         ;;
2259         # targets that do support conditional mov (cmov)
2260         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64|k8|opteron|athlon-fx|core2|amdfam10|barcelona|atom)
2261             cpuflags="-march=$cpu"
2262             enable cmov
2263             enable fast_cmov
2264         ;;
2265         # targets that do support conditional mov but on which it's slow
2266         pentium4|pentium4m|prescott|nocona)
2267             cpuflags="-march=$cpu"
2268             enable cmov
2269             disable fast_cmov
2270         ;;
2271     esac
2272
2273 elif enabled sparc; then
2274
2275     case $cpu in
2276         niagara)
2277             cpuflags="-mcpu=$cpu"
2278             disable vis
2279         ;;
2280         sparc64)
2281             cpuflags="-mcpu=v9"
2282         ;;
2283     esac
2284
2285 elif enabled arm; then
2286
2287     case $cpu in
2288         armv*)
2289             cpuflags="-march=$cpu"
2290             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
2291         ;;
2292         *)
2293             cpuflags="-mcpu=$cpu"
2294             case $cpu in
2295                 cortex-a*)                               subarch=armv7a  ;;
2296                 cortex-r*)                               subarch=armv7r  ;;
2297                 cortex-m*)                               subarch=armv7m  ;;
2298                 arm11*)                                  subarch=armv6   ;;
2299                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
2300                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
2301             esac
2302         ;;
2303     esac
2304
2305 elif enabled alpha; then
2306
2307     enabled ccc && cpuflags="-arch $cpu" || cpuflags="-mcpu=$cpu"
2308
2309 elif enabled bfin; then
2310
2311     cpuflags="-mcpu=$cpu"
2312
2313 elif enabled mips; then
2314
2315     cpuflags="-march=$cpu"
2316
2317 elif enabled avr32; then
2318
2319     case $cpu in
2320         ap7[02]0[0-2])
2321             subarch="avr32_ap"
2322             cpuflags="-mpart=$cpu"
2323         ;;
2324         ap)
2325             subarch="avr32_ap"
2326             cpuflags="-march=$cpu"
2327         ;;
2328         uc3[ab]*)
2329             subarch="avr32_uc"
2330             cpuflags="-mcpu=$cpu"
2331         ;;
2332         uc)
2333             subarch="avr32_uc"
2334             cpuflags="-march=$cpu"
2335         ;;
2336     esac
2337
2338 fi
2339
2340 add_cflags $cpuflags
2341 add_asflags $cpuflags
2342
2343 # compiler sanity check
2344 check_exec <<EOF
2345 int main(void){ return 0; }
2346 EOF
2347 if test "$?" != 0; then
2348     echo "$cc is unable to create an executable file."
2349     if test -z "$cross_prefix" && ! enabled cross_compile ; then
2350         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
2351         echo "Only do this if you know what cross compiling means."
2352     fi
2353     die "C compiler test failed."
2354 fi
2355
2356 add_cppflags -D_ISOC99_SOURCE
2357 check_cflags -std=c99
2358 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
2359 #include <stdlib.h>
2360 EOF
2361 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
2362 #include <stdlib.h>
2363 EOF
2364
2365 check_host_cflags -std=c99
2366
2367 case "$arch" in
2368     alpha|ia64|mips|parisc|sparc)
2369         spic=$shared
2370     ;;
2371     x86)
2372         subarch="x86_32"
2373         check_cc <<EOF && subarch="x86_64"
2374         int test[(int)sizeof(char*) - 7];
2375 EOF
2376         if test "$subarch" = "x86_64"; then
2377             spic=$shared
2378         fi
2379     ;;
2380 esac
2381
2382 enable $subarch
2383 enabled spic && enable pic
2384
2385 # OS specific
2386 case $target_os in
2387     haiku)
2388         prefix_default="/boot/common"
2389         network_extralibs="-lnetwork"
2390         host_libs=
2391         ;;
2392     sunos)
2393         FFSERVERLDFLAGS=""
2394         SHFLAGS='-shared -Wl,-h,$$(@F)'
2395         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
2396         network_extralibs="-lsocket -lnsl"
2397         add_cppflags -D__EXTENSIONS__
2398         nm_opts='-P -g'
2399         ;;
2400     netbsd)
2401         disable symver
2402         oss_indev_extralibs="-lossaudio"
2403         oss_outdev_extralibs="-lossaudio"
2404         ;;
2405     openbsd)
2406         enable malloc_aligned
2407         # On OpenBSD 4.5. the compiler does not use PIC unless
2408         # explicitly using -fPIC. FFmpeg builds fine without PIC,
2409         # however the generated executable will not do anything
2410         # (simply quits with exit-code 1, no crash, no output).
2411         # Thus explicitly enable PIC here.
2412         enable pic
2413         disable symver
2414         SHFLAGS='-shared'
2415         oss_indev_extralibs="-lossaudio"
2416         oss_outdev_extralibs="-lossaudio"
2417         ;;
2418     dragonfly)
2419         enable malloc_aligned
2420         disable symver
2421         ;;
2422     freebsd)
2423         enable malloc_aligned
2424         ;;
2425     bsd/os)
2426         add_extralibs -lpoll -lgnugetopt
2427         strip="strip -d"
2428         ;;
2429     darwin)
2430         enable malloc_aligned
2431         gas="gas-preprocessor.pl $cc"
2432         enabled ppc && add_asflags -force_cpusubtype_ALL
2433         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
2434         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
2435         strip="${strip} -x"
2436         add_ldflags -Wl,-dynamic,-search_paths_first
2437         SLIBSUF=".dylib"
2438         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
2439         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
2440         FFSERVERLDFLAGS=-Wl,-bind_at_load
2441         objformat="macho"
2442         enabled x86_64 && objformat="macho64"
2443         enabled_any pic shared ||
2444             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
2445         ;;
2446     mingw32*)
2447         if test $target_os = "mingw32ce"; then
2448             disable network
2449         else
2450             target_os=mingw32
2451         fi
2452         LIBTARGET=i386
2453         if enabled x86_64; then
2454             enable malloc_aligned
2455             LIBTARGET=x64
2456         elif enabled arm; then
2457             LIBTARGET=arm-wince
2458         fi
2459         shlibdir_default="$bindir_default"
2460         SLIBPREF=""
2461         SLIBSUF=".dll"
2462         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
2463         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
2464         SLIB_EXTRA_CMD='-lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.lib)'
2465         SLIB_INSTALL_EXTRA_CMD='-install -m 644 $(SUBDIR)$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.lib) "$(SHLIBDIR)/$(SLIBNAME:$(SLIBSUF)=.lib)"; \
2466             install -m 644 $(SUBDIR)$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.lib) "$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.lib)"; \
2467             install -d "$(LIBDIR)"; \
2468             install -m 644 $(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) "$(LIBDIR)/lib$(SLIBNAME:$(SLIBSUF)=.dll.a)"'
2469         SLIB_UNINSTALL_EXTRA_CMD='rm -f "$(SHLIBDIR)/$(SLIBNAME:$(SLIBSUF)=.lib)"'
2470         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
2471         objformat="win32"
2472         enable dos_paths
2473         check_cflags -fno-common
2474         check_cpp_condition _mingw.h "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) \
2475                                       || (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
2476                 die "ERROR: MinGW runtime version must be >= 3.15."
2477         add_cppflags -U__STRICT_ANSI__
2478         ;;
2479     cygwin*)
2480         target_os=cygwin
2481         shlibdir_default="$bindir_default"
2482         SLIBPREF="cyg"
2483         SLIBSUF=".dll"
2484         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
2485         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
2486         SHFLAGS='-shared -Wl,--enable-auto-image-base'
2487         objformat="win32"
2488         enable dos_paths
2489         check_cflags -fno-common
2490         ;;
2491     *-dos|freedos|opendos)
2492         network_extralibs="-lsocket"
2493         objformat="coff"
2494         enable dos_paths
2495         ;;
2496     linux)
2497         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
2498         enable dv1394
2499         ;;
2500     irix*)
2501         target_os=irix
2502         ranlib="echo ignoring ranlib"
2503         ;;
2504     os/2*)
2505         strip="lxlite -CS"
2506         ln_s="cp -f"
2507         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
2508         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
2509         FFSERVERLDFLAGS=""
2510         LIBSUF="_s.a"
2511         SLIBPREF=""
2512         SLIBSUF=".dll"
2513         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
2514         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
2515         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
2516           echo PROTMODE >> $(SUBDIR)$(NAME).def; \
2517           echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
2518           echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
2519           echo EXPORTS >> $(SUBDIR)$(NAME).def; \
2520           emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
2521         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
2522           emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
2523         SLIB_INSTALL_EXTRA_CMD='install -m 644 $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib "$(LIBDIR)"'
2524         SLIB_UNINSTALL_EXTRA_CMD='rm -f "$(LIBDIR)"/$(LIBPREF)$(NAME)_dll.a "$(LIBDIR)"/$(LIBPREF)$(NAME)_dll.lib'
2525         enable dos_paths
2526         ;;
2527     gnu/kfreebsd)
2528         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -D_BSD_SOURCE
2529         ;;
2530     gnu)
2531         ;;
2532     qnx)
2533         add_cppflags -D_QNX_SOURCE
2534         network_extralibs="-lsocket"
2535         ;;
2536     symbian)
2537         SLIBSUF=".dll"
2538         enable dos_paths
2539         add_cflags --include=$sysinclude/gcce/gcce.h
2540         ;;
2541     none)
2542         ;;
2543     *)
2544         die "Unknown OS '$target_os'."
2545         ;;
2546 esac
2547
2548 echo "config:$arch:$subarch:$cpu:$target_os:$cc_ident:$FFMPEG_CONFIGURATION" >config.fate
2549
2550 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable pic
2551
2552 set_default $PATHS_LIST
2553
2554 # we need to build at least one lib type
2555 if ! enabled_any static shared; then
2556     cat <<EOF
2557 At least one library type must be built.
2558 Specify --enable-static to build the static libraries or --enable-shared to
2559 build the shared libraries as well. To only build the shared libraries specify
2560 --disable-static in addition to --enable-shared.
2561 EOF
2562     exit 1;
2563 fi
2564
2565 disabled static && LIBNAME=""
2566
2567 die_license_disabled() {
2568     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
2569 }
2570
2571 die_license_disabled gpl libx264
2572 die_license_disabled gpl libxavs
2573 die_license_disabled gpl libxvid
2574 die_license_disabled gpl x11grab
2575
2576 die_license_disabled nonfree libfaac
2577
2578 die_license_disabled version3 libopencore_amrnb
2579 die_license_disabled version3 libopencore_amrwb
2580 die_license_disabled version3 libvo_aacenc
2581 die_license_disabled version3 libvo_amrwbenc
2582
2583 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2584
2585 disabled optimizations || check_cflags -fomit-frame-pointer
2586
2587 enable_pic() {
2588     enable pic
2589     add_cppflags -DPIC
2590     add_cflags   -fPIC
2591     add_asflags  -fPIC
2592 }
2593
2594 enabled pic && enable_pic
2595
2596 check_cc <<EOF || die "Symbol mangling check failed."
2597 int ff_extern;
2598 EOF
2599 sym=$($nm $nm_opts $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
2600 extern_prefix=${sym%%ff_extern*}
2601
2602 check_cc <<EOF && enable inline_asm
2603 void foo(void) { __asm__ volatile ("" ::); }
2604 EOF
2605
2606 _restrict=
2607 for restrict_keyword in restrict __restrict__ __restrict; do
2608     check_cc <<EOF && _restrict=$restrict_keyword && break
2609 void foo(char * $restrict_keyword p);
2610 EOF
2611 done
2612
2613 check_cc <<EOF && enable attribute_packed
2614 struct { int x; } __attribute__((packed)) x;
2615 EOF
2616
2617 check_cc <<EOF && enable attribute_may_alias
2618 union { int x; } __attribute__((may_alias)) x;
2619 EOF
2620
2621 check_cc <<EOF || die "endian test failed"
2622 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
2623 EOF
2624 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
2625
2626 if enabled alpha; then
2627
2628     check_cflags -mieee
2629
2630 elif enabled arm; then
2631
2632     check_cflags -marm
2633     nogas=die
2634
2635     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
2636         enable vfp_args
2637     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
2638         case "${cross_prefix:-$cc}" in
2639             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
2640             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
2641 __asm__ (".eabi_attribute 28, 1");
2642 int main(void) { return 0; }
2643 EOF
2644         esac
2645         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
2646     fi
2647
2648     # We have to check if pld is a nop and disable it.
2649     check_asm pld '"pld [r0]"'
2650
2651     enabled armv5te && check_asm armv5te '"qadd r0, r0, r0"'
2652     enabled armv6   && check_asm armv6   '"sadd16 r0, r0, r0"'
2653     enabled armv6t2 && check_asm armv6t2 '"movt r0, #0"'
2654     enabled armvfp  && check_asm armvfp  '"fadds s0, s0, s0"'
2655     enabled iwmmxt  && check_asm iwmmxt  '"wunpckelub wr6, wr4"'
2656     enabled neon    && check_asm neon    '"vadd.i16 q0, q0, q0"'
2657
2658     enabled_all armv6t2 shared !pic && enable_pic
2659
2660 elif enabled mips; then
2661
2662     check_asm loongson '"dmult.g $1, $2, $3"'
2663     enabled mmi     && check_asm mmi     '"lq $2, 0($2)"'
2664
2665 elif enabled ppc; then
2666
2667     enable local_aligned_8 local_aligned_16
2668
2669     check_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
2670     check_asm ibm_asm   '"add 0, 0, 0"'
2671     check_asm ppc4xx    '"maclhw r10, r11, r12"'
2672     check_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
2673
2674     # AltiVec flags: The FSF version of GCC differs from the Apple version
2675     if enabled altivec; then
2676         nogas=warn
2677         check_cflags -maltivec -mabi=altivec &&
2678         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
2679         check_cflags -faltivec
2680
2681         # check if our compiler supports Motorola AltiVec C API
2682         check_cc <<EOF || disable altivec
2683 $inc_altivec_h
2684 int main(void) {
2685     vector signed int v1, v2, v3;
2686     v1 = vec_add(v2,v3);
2687     return 0;
2688 }
2689 EOF
2690
2691         # check if our compiler supports braces for vector declarations
2692         check_cc <<EOF || die "You need a compiler that supports {} in AltiVec vector declarations."
2693 $inc_altivec_h
2694 int main (void) { (vector int) {1}; return 0; }
2695 EOF
2696     fi
2697
2698 elif enabled sparc; then
2699
2700     enabled vis && check_asm vis '"pdist %f0, %f0, %f0"' -mcpu=ultrasparc &&
2701         add_cflags -mcpu=ultrasparc -mtune=ultrasparc
2702
2703 elif enabled x86; then
2704
2705     enable local_aligned_8 local_aligned_16
2706
2707     # check whether EBP is available on x86
2708     # As 'i' is stored on the stack, this program will crash
2709     # if the base pointer is used to access it because the
2710     # base pointer is cleared in the inline assembly code.
2711     check_exec_crash <<EOF && enable ebp_available
2712     volatile int i=0;
2713     __asm__ volatile (
2714         "xorl %%ebp, %%ebp"
2715     ::: "%ebp");
2716     return i;
2717 EOF
2718
2719     # check whether EBX is available on x86
2720     check_asm ebx_available '""::"b"(0)' &&
2721         check_asm ebx_available '"":::"%ebx"'
2722
2723     # check whether xmm clobbers are supported
2724     check_asm xmm_clobbers '"":::"%xmm0"'
2725
2726     # check whether more than 10 operands are supported
2727     check_cc <<EOF && enable ten_operands
2728 int main(void) {
2729     int x=0;
2730     __asm__ volatile(
2731         ""
2732         :"+&rm"(x), "+&rm"(x), "+&rm"(x), "+&rm"(x), "+&rm"(x), "+&rm"(x)
2733     );
2734     return 0;
2735 }
2736 EOF
2737
2738     # check whether binutils is new enough to compile SSSE3/MMX2
2739     enabled ssse3 && check_asm ssse3 '"pabsw %xmm0, %xmm0"'
2740     enabled mmx2  && check_asm mmx2  '"pmaxub %mm0, %mm1"'
2741
2742     check_asm bswap '"bswap %%eax" ::: "%eax"'
2743
2744     if ! disabled_any asm mmx yasm; then
2745         if check_cmd $yasmexe --version; then
2746             enabled x86_64 && yasm_extra="-m amd64"
2747             yasm_debug="-g dwarf2"
2748         elif check_cmd nasm -v; then
2749             yasmexe=nasm
2750             yasm_debug="-g -F dwarf"
2751             enabled x86_64 && test "$objformat" = elf && objformat=elf64
2752         fi
2753
2754         YASMFLAGS="-f $objformat $yasm_extra"
2755         enabled pic               && append YASMFLAGS "-DPIC"
2756         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
2757         case "$objformat" in
2758             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
2759         esac
2760
2761         check_yasm "pextrd [eax], xmm0, 1" && enable yasm ||
2762             die "yasm not found, use --disable-yasm for a crippled build"
2763         check_yasm "vextractf128 xmm0, ymm0, 0" || disable avx
2764     fi
2765
2766     case "$cpu" in
2767         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
2768             disable fast_clz
2769         ;;
2770     esac
2771
2772 fi
2773
2774 if enabled asm; then
2775     as=${gas:=$as}
2776     check_asm gnu_as '".macro m n\n\\n:.int 0\n.endm\nm x"' ||
2777         $nogas "GNU assembler not found, install gas-preprocessor"
2778 fi
2779
2780 check_ldflags -Wl,--as-needed
2781
2782 if check_func dlopen; then
2783     ldl=
2784 elif check_func dlopen -ldl; then
2785     ldl=-ldl
2786 fi
2787
2788 if enabled network; then
2789     check_type "sys/types.h sys/socket.h" socklen_t
2790     check_type netdb.h "struct addrinfo"
2791     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
2792     check_type netinet/in.h "struct sockaddr_in6"
2793     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
2794     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
2795     # Prefer arpa/inet.h over winsock2
2796     if check_header arpa/inet.h ; then
2797         check_func closesocket
2798     elif check_header winsock2.h ; then
2799         check_func_headers winsock2.h closesocket -lws2 && \
2800             network_extralibs="-lws2" || \
2801         { check_func_headers winsock2.h closesocket -lws2_32 && \
2802             network_extralibs="-lws2_32"; }
2803         check_type ws2tcpip.h socklen_t
2804         check_type ws2tcpip.h "struct addrinfo"
2805         check_type ws2tcpip.h "struct ipv6_mreq"
2806         check_type ws2tcpip.h "struct sockaddr_in6"
2807         check_type ws2tcpip.h "struct sockaddr_storage"
2808         check_struct winsock2.h "struct sockaddr" sa_len
2809     else
2810         disable network
2811     fi
2812 fi
2813
2814 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
2815 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
2816
2817 check_func  fcntl
2818 check_func  fork
2819 check_func  getaddrinfo $network_extralibs
2820 check_func  gethrtime
2821 check_func  getrusage
2822 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
2823 check_func  inet_aton $network_extralibs
2824 check_func  isatty
2825 check_func  localtime_r
2826 check_func  ${malloc_prefix}memalign            && enable memalign
2827 check_func  mkstemp
2828 check_func  mmap
2829 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
2830 check_func  setrlimit
2831 check_func  strerror_r
2832 check_func  strtok_r
2833 check_func_headers conio.h kbhit
2834 check_func_headers io.h setmode
2835 check_func_headers lzo/lzo1x.h lzo1x_999_compress
2836 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
2837 check_func_headers windows.h GetProcessTimes
2838 check_func_headers windows.h MapViewOfFile
2839 check_func_headers windows.h VirtualAlloc
2840
2841 check_header dlfcn.h
2842 check_header dxva2api.h
2843 check_header libcrystalhd/libcrystalhd_if.h
2844 check_header malloc.h
2845 check_header poll.h
2846 check_header sys/mman.h
2847 check_header sys/resource.h
2848 check_header sys/select.h
2849 check_header termios.h
2850 check_header vdpau/vdpau.h
2851 check_header vdpau/vdpau_x11.h
2852 check_header X11/extensions/XvMClib.h
2853
2854 check_struct dxva2api.h DXVA_PictureParameters wDecodedPictureIndex
2855
2856 if ! enabled_any memalign memalign_hack posix_memalign malloc_aligned &&
2857      enabled_any $need_memalign ; then
2858     die "Error, no aligned memory allocator but SSE enabled, disable it or use --enable-memalign-hack."
2859 fi
2860
2861 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
2862 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
2863
2864 # check for some common methods of building with pthread support
2865 # do this before the optional library checks as some of them require pthreads
2866 if ! disabled pthreads && ! enabled w32threads; then
2867     enable pthreads
2868     if check_func pthread_create; then
2869         :
2870     elif check_func pthread_create -pthread; then
2871         add_cflags -pthread
2872         add_extralibs -pthread
2873     elif check_func pthread_create -pthreads; then
2874         add_cflags -pthreads
2875         add_extralibs -pthreads
2876     elif check_func pthread_create -lpthreadGC2; then
2877         add_extralibs -lpthreadGC2
2878     elif ! check_lib pthread.h pthread_create -lpthread; then
2879         disable pthreads
2880     fi
2881 fi
2882
2883 for thread in $THREADS_LIST; do
2884     if enabled $thread; then
2885         test -n "$thread_type" &&
2886             die "ERROR: Only one thread type must be selected." ||
2887             thread_type="$thread"
2888     fi
2889 done
2890
2891 check_lib math.h sin -lm && LIBM="-lm"
2892 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
2893 enabled vaapi && require vaapi va/va.h vaInitialize -lva
2894
2895 check_mathfunc exp2
2896 check_mathfunc exp2f
2897 check_mathfunc llrint
2898 check_mathfunc llrintf
2899 check_mathfunc log2
2900 check_mathfunc log2f
2901 check_mathfunc lrint
2902 check_mathfunc lrintf
2903 check_mathfunc round
2904 check_mathfunc roundf
2905 check_mathfunc trunc
2906 check_mathfunc truncf
2907
2908 # these are off by default, so fail if requested and not available
2909 enabled avisynth   && require2 vfw32 "windows.h vfw.h" AVIFileInit -lavifil32
2910 enabled libcelt    && require libcelt celt/celt.h celt_decode -lcelt0
2911 enabled frei0r     && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
2912 enabled libdirac   && require_pkg_config dirac                          \
2913     "libdirac_decoder/dirac_parser.h libdirac_encoder/dirac_encoder.h"  \
2914     "dirac_decoder_init dirac_encoder_init"
2915 enabled libfaac    && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
2916 enabled libfreetype && require_pkg_config freetype2 "ft2build.h freetype/freetype.h" FT_Init_FreeType
2917 enabled libgsm     && require  libgsm gsm/gsm.h gsm_create -lgsm
2918 enabled libmp3lame && require  "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
2919 enabled libnut     && require  libnut libnut.h nut_demuxer_init -lnut
2920 enabled libopencore_amrnb  && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
2921 enabled libopencore_amrwb  && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
2922 enabled libopencv  && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
2923 enabled libopenjpeg && require libopenjpeg openjpeg.h opj_version -lopenjpeg
2924 enabled librtmp    && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
2925 enabled libschroedinger && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
2926 enabled libspeex   && require  libspeex speex/speex.h speex_decoder_init -lspeex
2927 enabled libtheora  && require  libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
2928 enabled libvo_aacenc && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
2929 enabled libvo_amrwbenc && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
2930 enabled libvorbis  && require  libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
2931 enabled libvpx     && {
2932     enabled libvpx_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
2933                                 die "ERROR: libvpx decoder version must be >=0.9.1"; }
2934     enabled libvpx_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
2935                                 die "ERROR: libvpx encoder version must be >=0.9.6"; } }
2936 enabled libx264    && require  libx264 x264.h x264_encoder_encode -lx264 &&
2937                       { check_cpp_condition x264.h "X264_BUILD >= 115" ||
2938                         die "ERROR: libx264 version must be >= 0.115."; }
2939 enabled libxavs    && require  libxavs xavs.h xavs_encoder_encode -lxavs
2940 enabled libxvid    && require  libxvid xvid.h xvid_global -lxvidcore
2941 enabled mlib       && require  mediaLib mlib_types.h mlib_VectorSub_S16_U8_Mod -lmlib
2942
2943 # libdc1394 check
2944 if enabled libdc1394; then
2945     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
2946         enable libdc1394_2; } ||
2947     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
2948         enable libdc1394_1; } ||
2949     die "ERROR: No version of libdc1394 found "
2950 fi
2951
2952 SDL_CONFIG="${cross_prefix}sdl-config"
2953 if check_pkg_config sdl SDL_version.h SDL_Linked_Version; then
2954     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
2955     enable sdl &&
2956     check_struct SDL.h SDL_VideoInfo current_w $sdl_cflags && enable sdl_video_size
2957 else
2958   if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
2959     sdl_cflags=$("${SDL_CONFIG}" --cflags)
2960     sdl_libs=$("${SDL_CONFIG}" --libs)
2961     check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
2962     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
2963     enable sdl &&
2964     check_struct SDL.h SDL_VideoInfo current_w $sdl_cflags && enable sdl_video_size
2965   fi
2966 fi
2967
2968 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
2969
2970 check_header linux/fb.h
2971 check_header linux/videodev.h
2972 check_header linux/videodev2.h
2973 check_header sys/videoio.h
2974
2975 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
2976 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
2977 # w32api 3.12 had it defined wrong
2978 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
2979
2980 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
2981 { check_header dev/bktr/ioctl_meteor.h &&
2982   check_header dev/bktr/ioctl_bt848.h; } ||
2983 { check_header machine/ioctl_meteor.h &&
2984   check_header machine/ioctl_bt848.h; } ||
2985 { check_header dev/video/meteor/ioctl_meteor.h &&
2986   check_header dev/video/bktr/ioctl_bt848.h; } ||
2987 check_header dev/ic/bt8xx.h
2988
2989 check_header sndio.h
2990 if check_struct sys/soundcard.h audio_buf_info bytes; then
2991     enable_safe sys/soundcard.h
2992 else
2993     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
2994     #include <sys/soundcard.h>
2995     audio_buf_info abc;
2996 EOF
2997 fi
2998 check_header soundcard.h
2999
3000 enabled_any alsa_indev alsa_outdev && check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
3001
3002 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait
3003
3004 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
3005
3006 enabled x11grab                         &&
3007 check_header X11/Xlib.h                 &&
3008 check_header X11/extensions/XShm.h      &&
3009 check_header X11/extensions/Xfixes.h    &&
3010 check_func XOpenDisplay -lX11           &&
3011 check_func XShmCreateImage -lX11 -lXext &&
3012 check_func XFixesGetCursorImage -lX11 -lXext -lXfixes
3013
3014 if ! disabled vaapi; then
3015     check_lib va/va.h vaInitialize -lva && {
3016         check_cpp_condition va/va_version.h "VA_CHECK_VERSION(0,32,0)" ||
3017         warn "Please upgrade to VA-API >= 0.32 if you would like full VA-API support.";
3018     } || disable vaapi
3019 fi
3020
3021 if ! disabled vdpau && enabled vdpau_vdpau_h; then
3022 check_cpp_condition \
3023     vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
3024     { echolog "Please upgrade to libvdpau >= 0.2 if you would like vdpau support." &&
3025       disable vdpau; }
3026 fi
3027
3028 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
3029
3030 # add some useful compiler flags if supported
3031 check_cflags -Wdeclaration-after-statement
3032 check_cflags -Wall
3033 check_cflags -Wno-parentheses
3034 check_cflags -Wno-switch
3035 check_cflags -Wdisabled-optimization
3036 check_cflags -Wpointer-arith
3037 check_cflags -Wredundant-decls
3038 check_cflags -Wno-pointer-sign
3039 check_cflags -Wcast-qual
3040 check_cflags -Wwrite-strings
3041 check_cflags -Wtype-limits
3042 check_cflags -Wundef
3043 check_cflags -Wmissing-prototypes
3044 check_cflags -Wno-pointer-to-int-cast
3045 enabled extra_warnings && check_cflags -Winline
3046
3047 # add some linker flags
3048 check_ldflags -Wl,--warn-common
3049 check_ldflags '-Wl,-rpath-link,\$(BUILD_ROOT)/libpostproc -Wl,-rpath-link,\$(BUILD_ROOT)/libswscale -Wl,-rpath-link,\$(BUILD_ROOT)/libavfilter -Wl,-rpath-link,\$(BUILD_ROOT)/libavdevice -Wl,-rpath-link,\$(BUILD_ROOT)/libavformat -Wl,-rpath-link,\$(BUILD_ROOT)/libavcodec -Wl,-rpath-link,\$(BUILD_ROOT)/libavutil'
3050 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
3051
3052 echo "X{};" > $TMPV
3053 if test_ldflags -Wl,--version-script,$TMPV; then
3054     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
3055     check_cc <<EOF && enable symver_asm_label
3056 void ff_foo(void) __asm__ ("av_foo@VERSION");
3057 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
3058 EOF
3059     check_cc <<EOF && enable symver_gnu_asm
3060 __asm__(".symver ff_foo,av_foo@VERSION");
3061 void ff_foo(void) {}
3062 EOF
3063 fi
3064
3065 if enabled small; then
3066     add_cflags $size_cflags
3067     optimizations="small"
3068 elif enabled optimizations; then
3069     add_cflags $speed_cflags
3070 else
3071     add_cflags $noopt_cflags
3072 fi
3073 check_cflags -fno-math-errno
3074 check_cflags -fno-signed-zeros
3075
3076 if enabled icc; then
3077     # Just warnings, no remarks
3078     check_cflags -w1
3079     # -wd: Disable following warnings
3080     # 144, 167, 556: -Wno-pointer-sign
3081     # 1292: attribute "foo" ignored
3082     # 10006: ignoring unknown option -fno-signed-zeros
3083     # 10148: ignoring unknown option -Wno-parentheses
3084     # 10156: ignoring option '-W'; no argument required
3085     check_cflags -wd144,167,556,1292,10006,10148,10156
3086     # 11030: Warning unknown option --as-needed
3087     # 10156: ignoring option '-export'; no argument required
3088     check_ldflags -wd10156,11030
3089     # Allow to compile with optimizations
3090     check_ldflags -march=$cpu
3091     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
3092     enable ebp_available
3093     if enabled x86_32; then
3094         test ${icc_version%%.*} -ge 11 && \
3095             check_cflags -falign-stack=maintain-16-byte || \
3096             disable aligned_stack
3097     fi
3098 elif enabled ccc; then
3099     # disable some annoying warnings
3100     add_cflags -msg_disable cvtu32to64
3101     add_cflags -msg_disable embedcomment
3102     add_cflags -msg_disable needconstext
3103     add_cflags -msg_disable nomainieee
3104     add_cflags -msg_disable ptrmismatch1
3105     add_cflags -msg_disable unreachcode
3106 elif enabled gcc; then
3107     check_cflags -fno-tree-vectorize
3108     check_cflags -Werror=implicit-function-declaration
3109     check_cflags -Werror=missing-prototypes
3110 elif enabled llvm_gcc; then
3111     check_cflags -mllvm -stack-alignment=16
3112 elif enabled clang; then
3113     check_cflags -mllvm -stack-alignment=16
3114     check_cflags -Qunused-arguments
3115 elif enabled armcc; then
3116     # 2523: use of inline assembler is deprecated
3117     add_cflags -W${armcc_opt},--diag_suppress=2523
3118     add_cflags -W${armcc_opt},--diag_suppress=1207
3119     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
3120     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
3121 elif enabled tms470; then
3122     add_cflags -pds=824 -pds=837
3123 elif enabled pathscale; then
3124     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
3125 fi
3126
3127 enabled_any $THREADS_LIST      && enable threads
3128
3129 check_deps $CONFIG_LIST       \
3130            $CONFIG_EXTRA      \
3131            $HAVE_LIST         \
3132            $DECODER_LIST      \
3133            $ENCODER_LIST      \
3134            $HWACCEL_LIST      \
3135            $PARSER_LIST       \
3136            $BSF_LIST          \
3137            $DEMUXER_LIST      \
3138            $MUXER_LIST        \
3139            $FILTER_LIST       \
3140            $INDEV_LIST        \
3141            $OUTDEV_LIST       \
3142            $PROTOCOL_LIST     \
3143            $ACODEC_TESTS      \
3144            $VCODEC_TESTS      \
3145            $LAVF_TESTS        \
3146            $LAVFI_TESTS       \
3147            $SEEK_TESTS        \
3148
3149 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
3150
3151 echo "install prefix            $prefix"
3152 echo "source path               $source_path"
3153 echo "C compiler                $cc"
3154 echo "ARCH                      $arch ($cpu)"
3155 if test "$build_suffix" != ""; then
3156     echo "build suffix              $build_suffix"
3157 fi
3158 if test "$extra_version" != ""; then
3159     echo "version string suffix     $extra_version"
3160 fi
3161 echo "big-endian                ${bigendian-no}"
3162 echo "runtime cpu detection     ${runtime_cpudetect-no}"
3163 if enabled x86; then
3164     echo "yasm                      ${yasm-no}"
3165     echo "MMX enabled               ${mmx-no}"
3166     echo "MMX2 enabled              ${mmx2-no}"
3167     echo "3DNow! enabled            ${amd3dnow-no}"
3168     echo "3DNow! extended enabled   ${amd3dnowext-no}"
3169     echo "SSE enabled               ${sse-no}"
3170     echo "SSSE3 enabled             ${ssse3-no}"
3171     echo "AVX enabled               ${avx-no}"
3172     echo "CMOV enabled              ${cmov-no}"
3173     echo "CMOV is fast              ${fast_cmov-no}"
3174     echo "EBX available             ${ebx_available-no}"
3175     echo "EBP available             ${ebp_available-no}"
3176     echo "10 operands supported     ${ten_operands-no}"
3177 fi
3178 if enabled arm; then
3179     echo "ARMv5TE enabled           ${armv5te-no}"
3180     echo "ARMv6 enabled             ${armv6-no}"
3181     echo "ARMv6T2 enabled           ${armv6t2-no}"
3182     echo "ARM VFP enabled           ${armvfp-no}"
3183     echo "IWMMXT enabled            ${iwmmxt-no}"
3184     echo "NEON enabled              ${neon-no}"
3185 fi
3186 if enabled mips; then
3187     echo "MMI enabled               ${mmi-no}"
3188 fi
3189 if enabled ppc; then
3190     echo "AltiVec enabled           ${altivec-no}"
3191     echo "PPC 4xx optimizations     ${ppc4xx-no}"
3192     echo "dcbzl available           ${dcbzl-no}"
3193 fi
3194 if enabled sparc; then
3195     echo "VIS enabled               ${vis-no}"
3196 fi
3197 echo "debug symbols             ${debug-no}"
3198 echo "strip symbols             ${stripping-no}"
3199 echo "optimizations             ${optimizations-no}"
3200 echo "static                    ${static-no}"
3201 echo "shared                    ${shared-no}"
3202 echo "postprocessing support    ${postproc-no}"
3203 echo "new filter support        ${avfilter-no}"
3204 echo "network support           ${network-no}"
3205 echo "threading support         ${thread_type-no}"
3206 echo "SDL support               ${sdl-no}"
3207 echo "Sun medialib support      ${mlib-no}"
3208 echo "AVISynth enabled          ${avisynth-no}"
3209 echo "libcelt enabled           ${libcelt-no}"
3210 echo "frei0r enabled            ${frei0r-no}"
3211 echo "libdc1394 support         ${libdc1394-no}"
3212 echo "libdirac enabled          ${libdirac-no}"
3213 echo "libfaac enabled           ${libfaac-no}"
3214 echo "libgsm enabled            ${libgsm-no}"
3215 echo "libmp3lame enabled        ${libmp3lame-no}"
3216 echo "libnut enabled            ${libnut-no}"
3217 echo "libopencore-amrnb support ${libopencore_amrnb-no}"
3218 echo "libopencore-amrwb support ${libopencore_amrwb-no}"
3219 echo "libopencv support         ${libopencv-no}"
3220 echo "libopenjpeg enabled       ${libopenjpeg-no}"
3221 echo "librtmp enabled           ${librtmp-no}"
3222 echo "libschroedinger enabled   ${libschroedinger-no}"
3223 echo "libspeex enabled          ${libspeex-no}"
3224 echo "libtheora enabled         ${libtheora-no}"
3225 echo "libva enabled             ${vaapi-no}"
3226 echo "libvo-aacenc support      ${libvo_aacenc-no}"
3227 echo "libvo-amrwbenc support    ${libvo_amrwbenc-no}"
3228 echo "libvorbis enabled         ${libvorbis-no}"
3229 echo "libvpx enabled            ${libvpx-no}"
3230 echo "libx264 enabled           ${libx264-no}"
3231 echo "libxavs enabled           ${libxavs-no}"
3232 echo "libxvid enabled           ${libxvid-no}"
3233 echo "zlib enabled              ${zlib-no}"
3234 echo "bzlib enabled             ${bzlib-no}"
3235 echo
3236
3237 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
3238     echo "Enabled ${type}s:"
3239     eval list=\$$(toupper $type)_LIST
3240     print_enabled '_*' $list | sort | pr -r -3 -t
3241     echo
3242 done
3243
3244 license="LGPL version 2.1 or later"
3245 if enabled nonfree; then
3246     license="nonfree and unredistributable"
3247 elif enabled gplv3; then
3248     license="GPL version 3 or later"
3249 elif enabled lgplv3; then
3250     license="LGPL version 3 or later"
3251 elif enabled gpl; then
3252     license="GPL version 2 or later"
3253 fi
3254
3255 echo "License: $license"
3256
3257 echo "Creating config.mak and config.h..."
3258
3259 # build tree in object directory if source path is different from current one
3260 if enabled source_path_used; then
3261     DIRS="
3262         doc
3263         libavcodec
3264         libavcodec/$arch
3265         libavdevice
3266         libavfilter
3267         libavfilter/$arch
3268         libavfilter/libmpcodecs
3269         libavfilter/libmpcodecs/libvo
3270         libavformat
3271         libavutil
3272         libavutil/$arch
3273         libpostproc
3274         libswscale
3275         libswscale/$arch
3276         tests
3277         tools
3278     "
3279     FILES="
3280         Makefile
3281         common.mak
3282         subdir.mak
3283         doc/texi2pod.pl
3284         libavcodec/Makefile
3285         libavcodec/${arch}/Makefile
3286         libavdevice/Makefile
3287         libavfilter/Makefile
3288         libavfilter/${arch}/Makefile
3289         libavformat/Makefile
3290         libavutil/Makefile
3291         libpostproc/Makefile
3292         libswscale/Makefile
3293     "
3294     map 'mkdir -p $v' $DIRS;
3295     map 'test -f "$source_path/$v" && $ln_s "$source_path/$v" $v' $FILES
3296 fi
3297
3298 enabled stripping || strip="echo skipping strip"
3299
3300 config_files="$TMPH config.mak"
3301
3302 cat > config.mak <<EOF
3303 # Automatically generated by configure - do not modify!
3304 ifndef FFMPEG_CONFIG_MAK
3305 FFMPEG_CONFIG_MAK=1
3306 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
3307 prefix=$prefix
3308 LIBDIR=\$(DESTDIR)$libdir
3309 SHLIBDIR=\$(DESTDIR)$shlibdir
3310 INCDIR=\$(DESTDIR)$incdir
3311 BINDIR=\$(DESTDIR)$bindir
3312 DATADIR=\$(DESTDIR)$datadir
3313 MANDIR=\$(DESTDIR)$mandir
3314 SRC_PATH="$source_path"
3315 SRC_PATH_BARE=$source_path
3316 BUILD_ROOT="$PWD"
3317 CC_IDENT=$cc_ident
3318 ARCH=$arch
3319 CC=$cc
3320 AS=$as
3321 LD=$ld
3322 DEPCC=$dep_cc
3323 YASM=$yasmexe
3324 YASMDEP=$yasmexe
3325 AR=$ar
3326 RANLIB=$ranlib
3327 CP=cp -p
3328 LN_S=$ln_s
3329 STRIP=$strip
3330 CPPFLAGS=$CPPFLAGS
3331 CFLAGS=$CFLAGS
3332 ASFLAGS=$ASFLAGS
3333 CC_O=$CC_O
3334 LDFLAGS=$LDFLAGS
3335 FFSERVERLDFLAGS=$FFSERVERLDFLAGS
3336 SHFLAGS=$SHFLAGS
3337 YASMFLAGS=$YASMFLAGS
3338 BUILDSUF=$build_suffix
3339 FULLNAME=$FULLNAME
3340 LIBPREF=$LIBPREF
3341 LIBSUF=$LIBSUF
3342 LIBNAME=$LIBNAME
3343 SLIBPREF=$SLIBPREF
3344 SLIBSUF=$SLIBSUF
3345 EXESUF=$EXESUF
3346 EXTRA_VERSION=$extra_version
3347 DEPFLAGS=$DEPFLAGS
3348 CCDEP=$CCDEP
3349 ASDEP=$ASDEP
3350 CC_DEPFLAGS=$CC_DEPFLAGS
3351 AS_DEPFLAGS=$AS_DEPFLAGS
3352 HOSTCC=$host_cc
3353 HOSTCFLAGS=$host_cflags
3354 HOSTEXESUF=$HOSTEXESUF
3355 HOSTLDFLAGS=$host_ldflags
3356 HOSTLIBS=$host_libs
3357 TARGET_EXEC=$target_exec
3358 TARGET_PATH=$target_path
3359 SDL_LIBS=$sdl_libs
3360 SDL_CFLAGS=$sdl_cflags
3361 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
3362 EXTRALIBS=$extralibs
3363 INSTALL=$install
3364 LIBTARGET=${LIBTARGET}
3365 SLIBNAME=${SLIBNAME}
3366 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
3367 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
3368 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
3369 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
3370 SLIB_INSTALL_EXTRA_CMD=${SLIB_INSTALL_EXTRA_CMD}
3371 SLIB_UNINSTALL_EXTRA_CMD=${SLIB_UNINSTALL_EXTRA_CMD}
3372 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
3373 EOF
3374
3375 get_version(){
3376     name=$1
3377     file=$source_path/$2
3378     eval $(grep "#define ${name}_VERSION_M" "$file" | awk '{ print $2"="$3 }')
3379     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
3380     lcname=$(tolower $name)
3381     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
3382     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
3383 }
3384
3385 get_version LIBSWSCALE  libswscale/swscale.h
3386 get_version LIBPOSTPROC libpostproc/postprocess.h
3387 get_version LIBAVCODEC  libavcodec/version.h
3388 get_version LIBAVDEVICE libavdevice/avdevice.h
3389 get_version LIBAVFORMAT libavformat/version.h
3390 get_version LIBAVUTIL   libavutil/avutil.h
3391 get_version LIBAVFILTER libavfilter/avfilter.h
3392
3393 cat > $TMPH <<EOF
3394 /* Automatically generated by configure - do not modify! */
3395 #ifndef FFMPEG_CONFIG_H
3396 #define FFMPEG_CONFIG_H
3397 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
3398 #define FFMPEG_LICENSE "$(c_escape $license)"
3399 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
3400 #define CC_TYPE "$cc_type"
3401 #define CC_VERSION $cc_version
3402 #define restrict $_restrict
3403 #define EXTERN_PREFIX "${extern_prefix}"
3404 #define EXTERN_ASM ${extern_prefix}
3405 #define SLIBSUF "$SLIBSUF"
3406 EOF
3407
3408 test -n "$malloc_prefix" &&
3409     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
3410
3411 if enabled small || disabled optimizations; then
3412     echo "#undef  av_always_inline"  >> $TMPH
3413     if enabled small; then
3414         echo "#define av_always_inline inline"  >> $TMPH
3415     else
3416         echo "#define av_always_inline av_unused"  >> $TMPH
3417     fi
3418 fi
3419
3420 if enabled yasm; then
3421     append config_files $TMPASM
3422     printf '' >$TMPASM
3423 fi
3424
3425 print_config ARCH_   "$config_files" $ARCH_LIST
3426 print_config HAVE_   "$config_files" $HAVE_LIST
3427 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
3428                                      $CONFIG_EXTRA      \
3429                                      $DECODER_LIST      \
3430                                      $ENCODER_LIST      \
3431                                      $HWACCEL_LIST      \
3432                                      $PARSER_LIST       \
3433                                      $BSF_LIST          \
3434                                      $DEMUXER_LIST      \
3435                                      $MUXER_LIST        \
3436                                      $FILTER_LIST       \
3437                                      $PROTOCOL_LIST     \
3438                                      $INDEV_LIST        \
3439                                      $OUTDEV_LIST       \
3440
3441 cat >>config.mak <<EOF
3442 ACODEC_TESTS=$(print_enabled -n _test $ACODEC_TESTS)
3443 VCODEC_TESTS=$(print_enabled -n _test $VCODEC_TESTS)
3444 LAVF_TESTS=$(print_enabled   -n _test $LAVF_TESTS)
3445 LAVFI_TESTS=$(print_enabled  -n _test $LAVFI_TESTS)
3446 SEEK_TESTS=$(print_enabled   -n _test $SEEK_TESTS)
3447 EOF
3448
3449 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
3450 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
3451
3452 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
3453 cp_if_changed $TMPH config.h
3454 touch .config
3455
3456 enabled yasm && cp_if_changed $TMPASM config.asm
3457
3458 cat > $TMPH <<EOF
3459 /* Generated by ffconf */
3460 #ifndef AVUTIL_AVCONFIG_H
3461 #define AVUTIL_AVCONFIG_H
3462 EOF
3463
3464 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
3465
3466 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
3467
3468 cp_if_changed $TMPH libavutil/avconfig.h
3469
3470 test -n "$WARNINGS" && printf "\n$WARNINGS"
3471
3472 # build pkg-config files
3473
3474 pkgconfig_generate(){
3475 name=$1
3476 shortname=${name#lib}${build_suffix}
3477 comment=$2
3478 version=$3
3479 libs=$4
3480 requires=$5
3481 enabled ${name#lib} || return 0
3482 cat <<EOF > $name/$name.pc
3483 prefix=$prefix
3484 exec_prefix=\${prefix}
3485 libdir=$libdir
3486 includedir=$incdir
3487
3488 Name: $name
3489 Description: $comment
3490 Version: $version
3491 Requires: $(enabled shared || echo $requires)
3492 Requires.private: $(enabled shared && echo $requires)
3493 Conflicts:
3494 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
3495 Libs.private: $(enabled shared && echo $libs)
3496 Cflags: -I\${includedir}
3497 EOF
3498 cat <<EOF > $name/$name-uninstalled.pc
3499 prefix=
3500 exec_prefix=
3501 libdir=\${pcfiledir}
3502 includedir=${source_path}
3503
3504 Name: $name
3505 Description: $comment
3506 Version: $version
3507 Requires: $requires
3508 Conflicts:
3509 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
3510 Cflags: -I\${includedir}
3511 EOF
3512 }
3513
3514 pkgconfig_generate libavutil "FFmpeg utility library" "$LIBAVUTIL_VERSION" "$LIBM"
3515 pkgconfig_generate libavcodec "FFmpeg codec library" "$LIBAVCODEC_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
3516 pkgconfig_generate libavformat "FFmpeg container format library" "$LIBAVFORMAT_VERSION" "$extralibs" "libavcodec = $LIBAVCODEC_VERSION"
3517 pkgconfig_generate libavdevice "FFmpeg device handling library" "$LIBAVDEVICE_VERSION" "$extralibs" "libavformat = $LIBAVFORMAT_VERSION"
3518 pkgconfig_generate libavfilter "FFmpeg video filtering library" "$LIBAVFILTER_VERSION" "$extralibs"
3519 pkgconfig_generate libpostproc "FFmpeg post processing library" "$LIBPOSTPROC_VERSION" "" "libavutil = $LIBAVUTIL_VERSION"
3520 pkgconfig_generate libswscale "FFmpeg image rescaling library" "$LIBSWSCALE_VERSION" "$LIBM" "libavutil = $LIBAVUTIL_VERSION"