Merge remote branch 'qatar/master'
[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     network
960     nonfree
961     pic
962     postproc
963     rdft
964     rtpdec
965     runtime_cpudetect
966     shared
967     sinewin
968     small
969     sram
970     static
971     swscale
972     swscale_alpha
973     vaapi
974     vdpau
975     version3
976     x11grab
977     zlib
978 "
979
980 THREADS_LIST='
981     pthreads
982     w32threads
983 '
984
985 ARCH_LIST='
986     alpha
987     arm
988     avr32
989     avr32_ap
990     avr32_uc
991     bfin
992     ia64
993     m68k
994     mips
995     mips64
996     parisc
997     ppc
998     ppc64
999     s390
1000     sh4
1001     sparc
1002     sparc64
1003     tomi
1004     x86
1005     x86_32
1006     x86_64
1007 '
1008
1009 ARCH_EXT_LIST='
1010     altivec
1011     amd3dnow
1012     amd3dnowext
1013     armv5te
1014     armv6
1015     armv6t2
1016     armvfp
1017     avx
1018     iwmmxt
1019     mmi
1020     mmx
1021     mmx2
1022     neon
1023     ppc4xx
1024     sse
1025     ssse3
1026     vis
1027 '
1028
1029 HAVE_LIST_PUB='
1030     bigendian
1031     fast_unaligned
1032 '
1033
1034 HAVE_LIST="
1035     $ARCH_EXT_LIST
1036     $HAVE_LIST_PUB
1037     $THREADS_LIST
1038     aligned_stack
1039     alsa_asoundlib_h
1040     altivec_h
1041     arpa_inet_h
1042     attribute_may_alias
1043     attribute_packed
1044     bswap
1045     closesocket
1046     cmov
1047     dcbzl
1048     dev_bktr_ioctl_bt848_h
1049     dev_bktr_ioctl_meteor_h
1050     dev_ic_bt8xx_h
1051     dev_video_meteor_ioctl_meteor_h
1052     dev_video_bktr_ioctl_bt848_h
1053     dlfcn_h
1054     dlopen
1055     dos_paths
1056     ebp_available
1057     ebx_available
1058     exp2
1059     exp2f
1060     fast_64bit
1061     fast_clz
1062     fast_cmov
1063     fcntl
1064     fork
1065     getaddrinfo
1066     gethrtime
1067     GetProcessMemoryInfo
1068     GetProcessTimes
1069     getrusage
1070     gnu_as
1071     struct_rusage_ru_maxrss
1072     ibm_asm
1073     inet_aton
1074     inline_asm
1075     isatty
1076     kbhit
1077     ldbrx
1078     libdc1394_1
1079     libdc1394_2
1080     llrint
1081     llrintf
1082     local_aligned_16
1083     local_aligned_8
1084     localtime_r
1085     log2
1086     log2f
1087     loongson
1088     lrint
1089     lrintf
1090     lzo1x_999_compress
1091     machine_ioctl_bt848_h
1092     machine_ioctl_meteor_h
1093     malloc_h
1094     MapViewOfFile
1095     memalign
1096     mkstemp
1097     mmap
1098     pld
1099     posix_memalign
1100     round
1101     roundf
1102     sdl
1103     sdl_video_size
1104     setmode
1105     sndio_h
1106     socklen_t
1107     soundcard_h
1108     poll_h
1109     setrlimit
1110     strerror_r
1111     strtok_r
1112     struct_addrinfo
1113     struct_ipv6_mreq
1114     struct_sockaddr_in6
1115     struct_sockaddr_sa_len
1116     struct_sockaddr_storage
1117     symver
1118     symver_gnu_asm
1119     symver_asm_label
1120     sys_mman_h
1121     sys_resource_h
1122     sys_select_h
1123     sys_soundcard_h
1124     sys_videoio_h
1125     ten_operands
1126     termios_h
1127     threads
1128     trunc
1129     truncf
1130     vfp_args
1131     VirtualAlloc
1132     winsock2_h
1133     xform_asm
1134     xmm_clobbers
1135     yasm
1136 "
1137
1138 # options emitted with CONFIG_ prefix but not available on command line
1139 CONFIG_EXTRA="
1140     avutil
1141     gplv3
1142     lgplv3
1143 "
1144
1145 CMDLINE_SELECT="
1146     $ARCH_EXT_LIST
1147     $CONFIG_LIST
1148     $THREADS_LIST
1149     asm
1150     cross_compile
1151     debug
1152     extra_warnings
1153     logging
1154     optimizations
1155     stripping
1156     symver
1157     yasm
1158 "
1159
1160 PATHS_LIST='
1161     bindir
1162     datadir
1163     incdir
1164     libdir
1165     mandir
1166     prefix
1167     shlibdir
1168 '
1169
1170 CMDLINE_SET="
1171     $PATHS_LIST
1172     ar
1173     arch
1174     as
1175     build_suffix
1176     cc
1177     cpu
1178     cross_prefix
1179     dep_cc
1180     extra_version
1181     host_cc
1182     host_cflags
1183     host_ldflags
1184     host_libs
1185     host_os
1186     ld
1187     logfile
1188     malloc_prefix
1189     nm
1190     pkg_config
1191     samples
1192     source_path
1193     strip
1194     sysinclude
1195     sysroot
1196     target_exec
1197     target_os
1198     target_path
1199 "
1200
1201 CMDLINE_APPEND="
1202     extra_cflags
1203 "
1204
1205 # code dependency declarations
1206
1207 # architecture extensions
1208
1209 armv5te_deps="arm"
1210 armv6_deps="arm"
1211 armv6t2_deps="arm"
1212 armvfp_deps="arm"
1213 iwmmxt_deps="arm"
1214 neon_deps="arm"
1215
1216 mmi_deps="mips"
1217
1218 altivec_deps="ppc"
1219 ppc4xx_deps="ppc"
1220
1221 vis_deps="sparc"
1222
1223 x86_64_suggest="cmov fast_cmov"
1224 amd3dnow_deps="mmx"
1225 amd3dnowext_deps="amd3dnow"
1226 mmx_deps="x86"
1227 mmx2_deps="mmx"
1228 sse_deps="mmx"
1229 ssse3_deps="sse"
1230 avx_deps="ssse3"
1231
1232 aligned_stack_if_any="ppc x86"
1233 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1234 fast_clz_if_any="alpha armv5te avr32 mips ppc x86"
1235 fast_unaligned_if_any="armv6 ppc x86"
1236
1237 need_memalign="altivec neon sse"
1238 inline_asm_deps="!tms470"
1239
1240 symver_if_any="symver_asm_label symver_gnu_asm"
1241
1242 # subsystems
1243 dct_select="rdft"
1244 mdct_select="fft"
1245 rdft_select="fft"
1246
1247 # decoders / encoders / hardware accelerators
1248 aac_decoder_select="mdct sinewin"
1249 aac_encoder_select="mdct sinewin"
1250 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1251 ac3_decoder_select="mdct ac3dsp ac3_parser"
1252 ac3_encoder_select="mdct ac3dsp"
1253 ac3_fixed_encoder_select="mdct ac3dsp"
1254 alac_encoder_select="lpc"
1255 amrnb_decoder_select="lsp"
1256 amrwb_decoder_select="lsp"
1257 atrac1_decoder_select="mdct sinewin"
1258 atrac3_decoder_select="mdct"
1259 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1260 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1261 cavs_decoder_select="golomb"
1262 cook_decoder_select="mdct sinewin"
1263 cscd_decoder_suggest="zlib"
1264 dca_decoder_select="mdct"
1265 dnxhd_encoder_select="aandct"
1266 dxa_decoder_select="zlib"
1267 eac3_decoder_select="ac3_decoder"
1268 eamad_decoder_select="aandct"
1269 eatgq_decoder_select="aandct"
1270 eatqi_decoder_select="aandct"
1271 ffv1_decoder_select="golomb"
1272 flac_decoder_select="golomb"
1273 flac_encoder_select="golomb lpc"
1274 flashsv_decoder_select="zlib"
1275 flashsv_encoder_select="zlib"
1276 flashsv2_encoder_select="zlib"
1277 flv_decoder_select="h263_decoder"
1278 flv_encoder_select="h263_encoder"
1279 fraps_decoder_select="huffman"
1280 h261_encoder_select="aandct"
1281 h263_decoder_select="h263_parser"
1282 h263_encoder_select="aandct"
1283 h263_vaapi_hwaccel_select="vaapi h263_decoder"
1284 h263i_decoder_select="h263_decoder"
1285 h263p_encoder_select="h263_encoder"
1286 h264_decoder_select="golomb h264dsp h264pred"
1287 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
1288 h264_dxva2_hwaccel_deps="dxva2api_h"
1289 h264_dxva2_hwaccel_select="dxva2 h264_decoder"
1290 h264_vaapi_hwaccel_select="vaapi"
1291 h264_vdpau_decoder_select="vdpau h264_decoder"
1292 imc_decoder_select="fft mdct sinewin"
1293 jpegls_decoder_select="golomb"
1294 jpegls_encoder_select="golomb"
1295 ljpeg_encoder_select="aandct"
1296 loco_decoder_select="golomb"
1297 mjpeg_encoder_select="aandct"
1298 mlp_decoder_select="mlp_parser"
1299 mp1float_decoder_select="dct"
1300 mp2float_decoder_select="dct"
1301 mp3adufloat_decoder_select="dct"
1302 mp3float_decoder_select="dct"
1303 mp3on4float_decoder_select="dct"
1304 mpeg1video_encoder_select="aandct"
1305 mpeg2video_encoder_select="aandct"
1306 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1307 mpeg4_encoder_select="h263_encoder"
1308 mpeg_vdpau_decoder_select="vdpau mpegvideo_decoder"
1309 mpeg1_vdpau_decoder_select="vdpau mpeg1video_decoder"
1310 mpeg1_vdpau_hwaccel_select="vdpau mpeg1video_decoder"
1311 mpeg2_crystalhd_decoder_select="crystalhd"
1312 mpeg2_dxva2_hwaccel_deps="dxva2api_h"
1313 mpeg2_dxva2_hwaccel_select="dxva2 mpeg2video_decoder"
1314 mpeg2_vdpau_hwaccel_select="vdpau mpeg2video_decoder"
1315 mpeg2_vaapi_hwaccel_select="vaapi mpeg2video_decoder"
1316 mpeg4_crystalhd_decoder_select="crystalhd"
1317 mpeg4_vaapi_hwaccel_select="vaapi mpeg4_decoder"
1318 mpeg4_vdpau_decoder_select="vdpau mpeg4_decoder"
1319 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1320 mpeg_xvmc_decoder_select="mpegvideo_decoder"
1321 msmpeg4_crystalhd_decoder_select="crystalhd"
1322 msmpeg4v1_decoder_select="h263_decoder"
1323 msmpeg4v1_encoder_select="h263_encoder"
1324 msmpeg4v2_decoder_select="h263_decoder"
1325 msmpeg4v2_encoder_select="h263_encoder"
1326 msmpeg4v3_decoder_select="h263_decoder"
1327 msmpeg4v3_encoder_select="h263_encoder"
1328 nellymoser_decoder_select="mdct sinewin"
1329 nellymoser_encoder_select="mdct sinewin"
1330 png_decoder_select="zlib"
1331 png_encoder_select="zlib"
1332 qcelp_decoder_select="lsp"
1333 qdm2_decoder_select="mdct rdft"
1334 ra_144_encoder_select="lpc"
1335 rv10_decoder_select="h263_decoder"
1336 rv10_encoder_select="h263_encoder"
1337 rv20_decoder_select="h263_decoder"
1338 rv20_encoder_select="h263_encoder"
1339 rv30_decoder_select="golomb h264pred"
1340 rv40_decoder_select="golomb h264pred"
1341 shorten_decoder_select="golomb"
1342 sipr_decoder_select="lsp"
1343 snow_decoder_select="dwt"
1344 snow_encoder_select="aandct dwt"
1345 sonic_decoder_select="golomb"
1346 sonic_encoder_select="golomb"
1347 sonic_ls_encoder_select="golomb"
1348 svq1_encoder_select="aandct"
1349 svq3_decoder_select="golomb h264dsp h264pred"
1350 svq3_decoder_suggest="zlib"
1351 theora_decoder_select="vp3_decoder"
1352 tiff_decoder_suggest="zlib"
1353 tiff_encoder_suggest="zlib"
1354 truehd_decoder_select="mlp_decoder"
1355 tscc_decoder_select="zlib"
1356 twinvq_decoder_select="mdct lsp sinewin"
1357 vc1_decoder_select="h263_decoder"
1358 vc1_crystalhd_decoder_select="crystalhd"
1359 vc1_dxva2_hwaccel_deps="dxva2api_h DXVA_PictureParameters_wDecodedPictureIndex"
1360 vc1_dxva2_hwaccel_select="dxva2 vc1_decoder"
1361 vc1_vaapi_hwaccel_select="vaapi vc1_decoder"
1362 vc1_vdpau_decoder_select="vdpau vc1_decoder"
1363 vorbis_decoder_select="mdct"
1364 vorbis_encoder_select="mdct"
1365 vp6_decoder_select="huffman"
1366 vp6a_decoder_select="vp6_decoder"
1367 vp6f_decoder_select="vp6_decoder"
1368 vp8_decoder_select="h264pred"
1369 wmapro_decoder_select="mdct sinewin"
1370 wmav1_decoder_select="mdct sinewin"
1371 wmav1_encoder_select="mdct sinewin"
1372 wmav2_decoder_select="mdct sinewin"
1373 wmav2_encoder_select="mdct sinewin"
1374 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1375 wmv1_decoder_select="h263_decoder"
1376 wmv1_encoder_select="h263_encoder"
1377 wmv2_decoder_select="h263_decoder"
1378 wmv2_encoder_select="h263_encoder"
1379 wmv3_decoder_select="vc1_decoder"
1380 wmv3_crystalhd_decoder_select="crystalhd"
1381 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1382 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1383 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
1384 zlib_decoder_select="zlib"
1385 zlib_encoder_select="zlib"
1386 zmbv_decoder_select="zlib"
1387 zmbv_encoder_select="zlib"
1388
1389 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
1390 vaapi_deps="va_va_h"
1391 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1392
1393 # parsers
1394 h264_parser_select="golomb h264dsp h264pred"
1395
1396 # external libraries
1397 libcelt_decoder_deps="libcelt"
1398 libdirac_decoder_deps="libdirac !libschroedinger"
1399 libdirac_encoder_deps="libdirac"
1400 libfaac_encoder_deps="libfaac"
1401 libgsm_decoder_deps="libgsm"
1402 libgsm_encoder_deps="libgsm"
1403 libgsm_ms_decoder_deps="libgsm"
1404 libgsm_ms_encoder_deps="libgsm"
1405 libmp3lame_encoder_deps="libmp3lame"
1406 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1407 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1408 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1409 libopenjpeg_decoder_deps="libopenjpeg"
1410 libschroedinger_decoder_deps="libschroedinger"
1411 libschroedinger_encoder_deps="libschroedinger"
1412 libspeex_decoder_deps="libspeex"
1413 libtheora_encoder_deps="libtheora"
1414 libvo_aacenc_encoder_deps="libvo_aacenc"
1415 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1416 libvorbis_encoder_deps="libvorbis"
1417 libvpx_decoder_deps="libvpx"
1418 libvpx_encoder_deps="libvpx"
1419 libx264_encoder_deps="libx264"
1420 libxavs_encoder_deps="libxavs"
1421 libxvid_encoder_deps="libxvid"
1422
1423 # demuxers / muxers
1424 ac3_demuxer_select="ac3_parser"
1425 asf_stream_muxer_select="asf_muxer"
1426 avisynth_demuxer_deps="avisynth"
1427 dirac_demuxer_select="dirac_parser"
1428 eac3_demuxer_select="ac3_parser"
1429 flac_demuxer_select="flac_parser"
1430 ipod_muxer_select="mov_muxer"
1431 libnut_demuxer_deps="libnut"
1432 libnut_muxer_deps="libnut"
1433 matroska_audio_muxer_select="matroska_muxer"
1434 matroska_demuxer_suggest="zlib bzlib"
1435 mov_demuxer_suggest="zlib"
1436 mp3_demuxer_select="mpegaudio_parser"
1437 mp4_muxer_select="mov_muxer"
1438 mpegtsraw_demuxer_select="mpegts_demuxer"
1439 mxf_d10_muxer_select="mxf_muxer"
1440 ogg_demuxer_select="golomb"
1441 psp_muxer_select="mov_muxer"
1442 rtp_demuxer_select="sdp_demuxer"
1443 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1444 rtsp_demuxer_select="http_protocol rtpdec"
1445 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol"
1446 sap_demuxer_select="sdp_demuxer"
1447 sap_muxer_select="rtp_muxer rtp_protocol"
1448 sdp_demuxer_select="rtpdec"
1449 spdif_muxer_select="aac_parser"
1450 tg2_muxer_select="mov_muxer"
1451 tgp_muxer_select="mov_muxer"
1452 w64_demuxer_deps="wav_demuxer"
1453
1454 # indevs / outdevs
1455 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1456 alsa_outdev_deps="alsa_asoundlib_h"
1457 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1458 dv1394_indev_deps="dv1394 dv_demuxer"
1459 fbdev_indev_deps="linux_fb_h"
1460 jack_indev_deps="jack_jack_h sem_timedwait"
1461 libdc1394_indev_deps="libdc1394"
1462 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1463 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1464 sndio_indev_deps="sndio_h"
1465 sndio_outdev_deps="sndio_h"
1466 v4l_indev_deps="linux_videodev_h"
1467 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1468 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1469 vfwcap_indev_extralibs="-lavicap32"
1470 x11_grab_device_indev_deps="x11grab XShmCreateImage"
1471 x11_grab_device_indev_extralibs="-lX11 -lXext -lXfixes"
1472
1473 # protocols
1474 gopher_protocol_deps="network"
1475 http_protocol_deps="network"
1476 http_protocol_select="tcp_protocol"
1477 mmsh_protocol_select="http_protocol"
1478 mmst_protocol_deps="network"
1479 rtmp_protocol_select="tcp_protocol"
1480 rtp_protocol_select="udp_protocol"
1481 tcp_protocol_deps="network"
1482 udp_protocol_deps="network pthreads"
1483
1484 # filters
1485 blackframe_filter_deps="gpl"
1486 cropdetect_filter_deps="gpl"
1487 drawtext_filter_deps="libfreetype"
1488 frei0r_filter_deps="frei0r dlopen strtok_r"
1489 frei0r_src_filter_deps="frei0r dlopen strtok_r"
1490 hqdn3d_filter_deps="gpl"
1491 movie_filter_deps="avcodec avformat"
1492 mp_filter_deps="gpl avcodec"
1493 ocv_filter_deps="libopencv"
1494 scale_filter_deps="swscale"
1495 yadif_filter_deps="gpl"
1496
1497 # libraries
1498 avdevice_deps="avcodec avformat"
1499 avformat_deps="avcodec"
1500 postproc_deps="gpl"
1501
1502 # programs
1503 ffmpeg_deps="avcodec avformat swscale"
1504 ffmpeg_select="buffer_filter"
1505 ffplay_deps="avcodec avformat swscale sdl"
1506 ffplay_select="rdft"
1507 ffprobe_deps="avcodec avformat"
1508 ffserver_deps="avformat ffm_muxer fork rtp_protocol rtsp_demuxer"
1509 ffserver_extralibs='$ldl'
1510
1511 doc_deps="texi2html"
1512
1513 # tests
1514
1515 test_deps(){
1516     suf1=$1
1517     suf2=$2
1518     shift 2
1519     for v; do
1520         dep=${v%=*}
1521         tests=${v#*=}
1522         for name in ${tests}; do
1523             eval ${name}_test_deps="'${dep}$suf1 ${dep}$suf2'"
1524         done
1525     done
1526 }
1527
1528 set_ne_test_deps(){
1529     eval ${1}_be_test_deps="bigendian"
1530     eval ${1}_le_test_deps="!bigendian"
1531 }
1532
1533 test_deps _encoder _decoder                                             \
1534     adpcm_g726=g726                                                     \
1535     adpcm_ima_qt                                                        \
1536     adpcm_ima_wav                                                       \
1537     adpcm_ms                                                            \
1538     adpcm_swf                                                           \
1539     adpcm_yamaha=adpcm_yam                                              \
1540     alac                                                                \
1541     asv1                                                                \
1542     asv2                                                                \
1543     bmp                                                                 \
1544     dnxhd="dnxhd_1080i dnxhd_720p dnxhd_720p_rd"                        \
1545     dvvideo="dv dv50"                                                   \
1546     ffv1                                                                \
1547     flac                                                                \
1548     flashsv                                                             \
1549     flv                                                                 \
1550     gif                                                                 \
1551     h261                                                                \
1552     h263="h263 h263p"                                                   \
1553     huffyuv                                                             \
1554     jpegls                                                              \
1555     mjpeg="jpg mjpeg ljpeg"                                             \
1556     mp2                                                                 \
1557     mpeg1video="mpeg mpeg1b"                                            \
1558     mpeg2video="mpeg2 mpeg2thread"                                      \
1559     mpeg4="mpeg4 mpeg4adv mpeg4nr mpeg4thread error rc"                 \
1560     msmpeg4v3=msmpeg4                                                   \
1561     msmpeg4v2                                                           \
1562     pbm=pbmpipe                                                         \
1563     pcx                                                                 \
1564     pgm="pgm pgmpipe"                                                   \
1565     png                                                                 \
1566     ppm="ppm ppmpipe"                                                   \
1567     rawvideo="rgb yuv"                                                  \
1568     roq                                                                 \
1569     rv10                                                                \
1570     rv20                                                                \
1571     sgi                                                                 \
1572     snow="snow snowll"                                                  \
1573     svq1                                                                \
1574     targa=tga                                                           \
1575     tiff                                                                \
1576     wmav1                                                               \
1577     wmav2                                                               \
1578     wmv1                                                                \
1579     wmv2                                                                \
1580
1581 test_deps _muxer _demuxer                                               \
1582     aiff                                                                \
1583     pcm_alaw=alaw                                                       \
1584     asf                                                                 \
1585     au                                                                  \
1586     avi                                                                 \
1587     dv=dv_fmt                                                           \
1588     ffm                                                                 \
1589     flv=flv_fmt                                                         \
1590     gxf                                                                 \
1591     matroska=mkv                                                        \
1592     mmf                                                                 \
1593     mov                                                                 \
1594     pcm_mulaw=mulaw                                                     \
1595     mxf                                                                 \
1596     nut                                                                 \
1597     ogg                                                                 \
1598     rawvideo=pixfmt                                                     \
1599     rm                                                                  \
1600     swf                                                                 \
1601     mpegts=ts                                                           \
1602     voc                                                                 \
1603     wav                                                                 \
1604     yuv4mpegpipe=yuv4mpeg                                               \
1605
1606 ac3_fixed_test_deps="ac3_fixed_encoder ac3_decoder rm_muxer rm_demuxer"
1607 mpg_test_deps="mpeg1system_muxer mpegps_demuxer"
1608
1609 set_ne_test_deps pixdesc
1610 set_ne_test_deps pixfmts_copy
1611 set_ne_test_deps pixfmts_crop
1612 set_ne_test_deps pixfmts_hflip
1613 set_ne_test_deps pixfmts_null
1614 set_ne_test_deps pixfmts_pad
1615 set_ne_test_deps pixfmts_scale
1616 set_ne_test_deps pixfmts_vflip
1617
1618 # default parameters
1619
1620 logfile="config.log"
1621
1622 # installation paths
1623 prefix_default="/usr/local"
1624 bindir_default='${prefix}/bin'
1625 datadir_default='${prefix}/share/ffmpeg'
1626 incdir_default='${prefix}/include'
1627 libdir_default='${prefix}/lib'
1628 mandir_default='${prefix}/share/man'
1629 shlibdir_default="$libdir_default"
1630
1631 # toolchain
1632 ar_default="ar"
1633 cc_default="gcc"
1634 cc_version=\"unknown\"
1635 host_cc_default="gcc"
1636 ln_s="ln -sf"
1637 nm_default="nm"
1638 objformat="elf"
1639 pkg_config_default=pkg-config
1640 ranlib="ranlib"
1641 strip_default="strip"
1642 yasmexe="yasm"
1643 nogas=":"
1644
1645 nm_opts='-g'
1646
1647 # machine
1648 arch_default=$(uname -m)
1649 cpu="generic"
1650
1651 # OS
1652 target_os_default=$(tolower $(uname -s))
1653 host_os=$target_os_default
1654
1655 # configurable options
1656 enable avcodec
1657 enable avdevice
1658 enable avfilter
1659 enable avformat
1660 enable avutil
1661 enable asm
1662 enable debug
1663 enable doc
1664 enable fastdiv
1665 enable ffmpeg
1666 enable ffplay
1667 enable ffprobe
1668 enable ffserver
1669 enable network
1670 enable optimizations
1671 enable postproc
1672 enable protocols
1673 enable static
1674 enable stripping
1675 enable swscale
1676 enable swscale_alpha
1677
1678 # build settings
1679 SHFLAGS='-shared -Wl,-soname,$$(@F)'
1680 FFSERVERLDFLAGS=-Wl,-E
1681 LIBPREF="lib"
1682 LIBSUF=".a"
1683 FULLNAME='$(NAME)$(BUILDSUF)'
1684 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
1685 SLIBPREF="lib"
1686 SLIBSUF=".so"
1687 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
1688 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
1689 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
1690 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
1691
1692 CC_O='-o $@'
1693
1694 host_cflags='-D_ISOC99_SOURCE -O3 -g -Wall'
1695 host_libs='-lm'
1696
1697 target_path='$(CURDIR)'
1698
1699 # since the object filename is not given with the -MM flag, the compiler
1700 # is only able to print the basename, and we must add the path ourselves
1701 DEPEND_CMD='$(DEPCC) $(DEPFLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
1702 DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -MM'
1703
1704 # find source path
1705 source_path="$(dirname "$0")"
1706 enable source_path_used
1707 if test -f configure; then
1708     source_path="$(pwd)"
1709     disable source_path_used
1710 else
1711     source_path="$(cd "$source_path"; pwd)"
1712     echo "$source_path" | grep -q '[[:blank:]]' &&
1713         die "Out of tree builds are impossible with whitespace in source path."
1714     test -e "$source_path/config.h" &&
1715         die "Out of tree builds are impossible with config.h in source dir."
1716 fi
1717
1718 for v in "$@"; do
1719     r=${v#*=}
1720     l=${v%"$r"}
1721     r=$(sh_quote "$r")
1722     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
1723 done
1724
1725 find_things(){
1726     thing=$1
1727     pattern=$2
1728     file=$source_path/$3
1729     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
1730 }
1731
1732 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
1733 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
1734 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
1735 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
1736 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
1737 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
1738 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
1739 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
1740 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
1741 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
1742 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
1743
1744 find_tests(){
1745     map "echo ${2}\${v}_test" $(ls "$source_path"/tests/ref/$1 | grep -v '[^-a-z0-9_]')
1746 }
1747
1748 ACODEC_TESTS=$(find_tests acodec)
1749 VCODEC_TESTS=$(find_tests vsynth1)
1750 LAVF_TESTS=$(find_tests lavf)
1751 LAVFI_TESTS=$(find_tests lavfi)
1752 SEEK_TESTS=$(find_tests seek seek_)
1753
1754 pcm_test_deps=$(map 'echo ${v%_*}_decoder $v' $(filter pcm_* $ENCODER_LIST))
1755
1756 for n in $COMPONENT_LIST; do
1757     v=$(toupper ${n%s})_LIST
1758     eval enable \$$v
1759     eval ${n}_if_any="\$$v"
1760 done
1761
1762 enable $ARCH_EXT_LIST $ACODEC_TESTS $VCODEC_TESTS $LAVF_TESTS $LAVFI_TESTS $SEEK_TESTS
1763
1764 die_unknown(){
1765     echo "Unknown option \"$1\"."
1766     echo "See $0 --help for available options."
1767     exit 1
1768 }
1769
1770 show_list() {
1771     suffix=_$1
1772     shift
1773     echo $* | sed s/$suffix//g | tr ' ' '\n' | sort | pr -3 -t
1774     exit 0
1775 }
1776
1777 for opt do
1778     optval="${opt#*=}"
1779     case "$opt" in
1780     --extra-ldflags=*) add_ldflags $optval
1781     ;;
1782     --extra-libs=*) add_extralibs $optval
1783     ;;
1784     --disable-devices) disable $INDEV_LIST $OUTDEV_LIST
1785     ;;
1786     --enable-debug=*) debuglevel="$optval"
1787     ;;
1788     --disable-everything)
1789     map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
1790     ;;
1791     --enable-*=*|--disable-*=*)
1792     eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
1793     is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
1794     eval list=\$$(toupper $thing)_LIST
1795     name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
1796     $action $(filter "$name" $list)
1797     ;;
1798     --enable-?*|--disable-?*)
1799     eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
1800     if is_in $option $COMPONENT_LIST; then
1801         test $action = disable && action=unset
1802         eval $action \$$(toupper ${option%s})_LIST
1803     elif is_in $option $CMDLINE_SELECT; then
1804         $action $option
1805     else
1806         die_unknown $opt
1807     fi
1808     ;;
1809     --list-*)
1810         NAME="${opt#--list-}"
1811         is_in $NAME $COMPONENT_LIST || die_unknown $opt
1812         NAME=${NAME%s}
1813         eval show_list $NAME \$$(toupper $NAME)_LIST
1814     ;;
1815     --help|-h) show_help
1816     ;;
1817     *)
1818     optname="${opt%%=*}"
1819     optname="${optname#--}"
1820     optname=$(echo "$optname" | sed 's/-/_/g')
1821     if is_in $optname $CMDLINE_SET; then
1822         eval $optname='$optval'
1823     elif is_in $optname $CMDLINE_APPEND; then
1824         append $optname "$optval"
1825     else
1826          die_unknown $opt
1827     fi
1828     ;;
1829     esac
1830 done
1831
1832 disabled logging && logfile=/dev/null
1833
1834 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
1835 set >> $logfile
1836
1837 test -n "$cross_prefix" && enable cross_compile
1838
1839 if enabled cross_compile; then
1840     test -n "$arch" && test -n "$target_os" ||
1841         die "Must specify target arch and OS when cross-compiling"
1842 fi
1843
1844 set_default arch target_os
1845
1846 ar_default="${cross_prefix}${ar_default}"
1847 cc_default="${cross_prefix}${cc_default}"
1848 nm_default="${cross_prefix}${nm_default}"
1849 pkg_config_default="${cross_prefix}${pkg_config_default}"
1850 ranlib="${cross_prefix}${ranlib}"
1851 strip_default="${cross_prefix}${strip_default}"
1852
1853 sysinclude_default="${sysroot}/usr/include"
1854
1855 set_default cc nm pkg_config strip sysinclude
1856 enabled cross_compile || host_cc_default=$cc
1857 set_default host_cc
1858
1859 if ! $pkg_config --version >/dev/null 2>&1; then
1860     warn "$pkg_config not found, library detection may fail."
1861     pkg_config=false
1862 fi
1863
1864 exesuf() {
1865     case $1 in
1866         mingw32*|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
1867     esac
1868 }
1869
1870 EXESUF=$(exesuf $target_os)
1871 HOSTEXESUF=$(exesuf $host_os)
1872
1873 # set temporary file name
1874 : ${TMPDIR:=$TEMPDIR}
1875 : ${TMPDIR:=$TMP}
1876 : ${TMPDIR:=/tmp}
1877
1878 if ! check_cmd mktemp -u XXXXXX; then
1879     # simple replacement for missing mktemp
1880     # NOT SAFE FOR GENERAL USE
1881     mktemp(){
1882         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
1883     }
1884 fi
1885
1886 tmpfile(){
1887     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
1888         (set -C; exec > $tmp) 2>/dev/null ||
1889         die "Unable to create temporary file in $TMPDIR."
1890     append TMPFILES $tmp
1891     eval $1=$tmp
1892 }
1893
1894 trap 'rm -f -- $TMPFILES' EXIT
1895
1896 tmpfile TMPC  .c
1897 tmpfile TMPE  $EXESUF
1898 tmpfile TMPH  .h
1899 tmpfile TMPO  .o
1900 tmpfile TMPS  .S
1901 tmpfile TMPV  .ver
1902 tmpfile TMPSH .sh
1903 tmpfile TMPASM .asm
1904
1905 unset -f mktemp
1906
1907 chmod +x $TMPE
1908
1909 # make sure we can execute files in $TMPDIR
1910 cat > $TMPSH 2>> $logfile <<EOF
1911 #! /bin/sh
1912 EOF
1913 chmod +x $TMPSH >> $logfile 2>&1
1914 if ! $TMPSH >> $logfile 2>&1; then
1915     cat <<EOF
1916 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
1917 variable to another directory and make sure that it is not mounted noexec.
1918 EOF
1919     die "Sanity test failed."
1920 fi
1921
1922 filter_cflags=echo
1923 filter_cppflags=echo
1924 filter_asflags=echo
1925
1926 if   $cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
1927     cc_type=llvm_gcc
1928     cc_version=__VERSION__
1929     gcc_extra_ver=$(expr "$($cc --version | head -n1)" : '.*\((.*)\)')
1930     cc_ident="llvm-gcc $($cc -dumpversion) $gcc_extra_ver"
1931     CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1932     AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1933     speed_cflags='-O3'
1934     size_cflags='-Os'
1935 elif $cc -v 2>&1 | grep -qi ^gcc; then
1936     cc_type=gcc
1937     cc_version=__VERSION__
1938     gcc_version=$($cc --version | head -n1)
1939     gcc_basever=$($cc -dumpversion)
1940     gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
1941     gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
1942     cc_ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
1943     if ! $cc -dumpversion | grep -q '^2\.'; then
1944         CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1945         AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1946     fi
1947     speed_cflags='-O3'
1948     size_cflags='-Os'
1949 elif $cc --version 2>/dev/null | grep -q Intel; then
1950     cc_type=icc
1951     cc_version="AV_STRINGIFY(__INTEL_COMPILER)"
1952     cc_ident=$($cc --version | head -n1)
1953     icc_version=$($cc -dumpversion)
1954     CC_DEPFLAGS='-MMD'
1955     AS_DEPFLAGS='-MMD'
1956     speed_cflags='-O3'
1957     size_cflags='-Os'
1958     noopt_cflags='-O1'
1959 elif $cc -v 2>&1 | grep -q xlc; then
1960     cc_type=xlc
1961     cc_version="AV_STRINGIFY(__IBMC__)"
1962     cc_ident=$($cc -qversion 2>/dev/null | head -n1)
1963     speed_cflags='-O5'
1964     size_cflags='-O5 -qcompact'
1965 elif $cc -V 2>/dev/null | grep -q Compaq; then
1966     cc_type=ccc
1967     cc_version="AV_STRINGIFY(__DECC_VER)"
1968     cc_ident=$($cc -V | head -n1 | cut -d' ' -f1-3)
1969     DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -M'
1970     debuglevel=3
1971     add_ldflags -Wl,-z,now # calls to libots crash without this
1972     speed_cflags='-fast'
1973     size_cflags='-O1'
1974 elif $cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
1975     test -d "$sysroot" || die "No valid sysroot specified."
1976     cc_type=armcc
1977     cc_version="AV_STRINGIFY(__ARMCC_VERSION)"
1978     cc_ident=$($cc --vsn | head -n1)
1979     armcc_conf="$PWD/armcc.conf"
1980     $cc --arm_linux_configure                 \
1981         --arm_linux_config_file="$armcc_conf" \
1982         --configure_sysroot="$sysroot"        \
1983         --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
1984         die "Error creating armcc configuration file."
1985     $cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
1986     cc="$cc --arm_linux_config_file=$armcc_conf --translate_gcc"
1987     as_default="${cross_prefix}gcc"
1988     CC_DEPFLAGS='-MMD'
1989     AS_DEPFLAGS='-MMD'
1990     speed_cflags='-O3'
1991     size_cflags='-Os'
1992     filter_asflags="filter_out -W${armcc_opt}*"
1993 elif $cc -version 2>/dev/null | grep -q TMS470; then
1994     cc_type=tms470
1995     cc_version="AV_STRINGIFY(__TI_COMPILER_VERSION__)"
1996     cc_ident=$($cc -version | head -n1 | tr -s ' ')
1997     cc="$cc --gcc --abi=eabi -eo=.o -mc -me"
1998     CC_O='-fr=$(@D)'
1999     as_default="${cross_prefix}gcc"
2000     ld_default="${cross_prefix}gcc"
2001     TMPO=$(basename $TMPC .c).o
2002     append TMPFILES $TMPO
2003     add_cflags -D__gnuc_va_list=va_list -D__USER_LABEL_PREFIX__=
2004     CC_DEPFLAGS='-ppa -ppd=$(@:.o=.d)'
2005     AS_DEPFLAGS='-MMD'
2006     speed_cflags='-O3 -mf=5'
2007     size_cflags='-O3 -mf=2'
2008     filter_cflags=tms470_flags
2009     tms470_flags(){
2010         for flag; do
2011             case $flag in
2012                 -march=*|-mcpu=*)
2013                     case "${flag#*=}" in
2014                         armv7-a|cortex-a*)      echo -mv=7a8 ;;
2015                         armv7-r|cortex-r*)      echo -mv=7r4 ;;
2016                         armv7-m|cortex-m*)      echo -mv=7m3 ;;
2017                         armv6*|arm11*)          echo -mv=6   ;;
2018                         armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2019                                                 echo -mv=5e  ;;
2020                         armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2021                     esac
2022                     ;;
2023                 -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2024                 -mfpu=vfp)      echo --float_support=vfpv2        ;;
2025                 -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2026                 -msoft-float)   echo --float_support=vfplib       ;;
2027                 -O[0-3]|-mf=*)  echo $flag                        ;;
2028                 -g)             echo -g -mn                       ;;
2029                 -pds=*)         echo $flag                        ;;
2030             esac
2031         done
2032     }
2033 elif $cc -v 2>&1 | grep -q clang; then
2034     cc_type=clang
2035     $cc -dM -E $TMPC | grep -q __clang_version__ &&
2036         cc_version=__clang_version__ || cc_version=__VERSION__
2037     cc_ident=$($cc --version | head -n1)
2038     CC_DEPFLAGS='-MMD'
2039     AS_DEPFLAGS='-MMD'
2040     speed_cflags='-O3'
2041     size_cflags='-Os'
2042 elif $cc -V 2>&1 | grep -q Sun; then
2043     cc_type=suncc
2044     cc_version="AV_STRINGIFY(__SUNPRO_C)"
2045     cc_ident=$($cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2046     DEPEND_CMD='$(DEPCC) $(DEPFLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2047     DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -xM1'
2048     speed_cflags='-O5'
2049     size_cflags='-O5 -xspace'
2050     filter_cflags=suncc_flags
2051     suncc_flags(){
2052         for flag; do
2053             case $flag in
2054                 -march=*|-mcpu=*)
2055                     case "${flag#*=}" in
2056                         native)                   echo -xtarget=native       ;;
2057                         v9|niagara)               echo -xarch=sparc          ;;
2058                         ultrasparc)               echo -xarch=sparcvis       ;;
2059                         ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2060                         i586|pentium)             echo -xchip=pentium        ;;
2061                         i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2062                         pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2063                         pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2064                         pentium4*)          echo -xtarget=pentium4           ;;
2065                         prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2066                         *-sse3)             echo -xarch=sse3                 ;;
2067                         core2)              echo -xarch=ssse3 -xchip=core2   ;;
2068                         amdfam10|barcelona)       echo -xarch=sse4_1         ;;
2069                         athlon-4|athlon-[mx]p)    echo -xarch=ssea           ;;
2070                         k8|opteron|athlon64|athlon-fx)
2071                                                   echo -xarch=sse2a          ;;
2072                         athlon*)                  echo -xarch=pentium_proa   ;;
2073                     esac
2074                     ;;
2075                 -std=c99)             echo -xc99              ;;
2076                 -fomit-frame-pointer) echo -xregs=frameptr    ;;
2077                 -fPIC)                echo -KPIC -xcode=pic32 ;;
2078                 -W*,*)                echo $flag              ;;
2079                 -f*-*|-W*)                                    ;;
2080                 *)                    echo $flag              ;;
2081             esac
2082         done
2083     }
2084 elif $cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2085     cc_type=pathscale
2086     cc_version=__PATHSCALE__
2087     cc_ident=$($cc -v 2>&1 | head -n1 | tr -d :)
2088     CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2089     AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2090     speed_cflags='-O2'
2091     size_cflags='-Os'
2092 elif $cc -v 2>&1 | grep -q Open64; then
2093     cc_type=open64
2094     cc_version=__OPEN64__
2095     cc_ident=$($cc -v 2>&1 | head -n1 | tr -d :)
2096     CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2097     AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2098     speed_cflags='-O2'
2099     size_cflags='-Os'
2100 fi
2101
2102 test -n "$cc_type" && enable $cc_type ||
2103     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2104
2105 : ${as_default:=$cc}
2106 : ${dep_cc_default:=$cc}
2107 : ${ld_default:=$cc}
2108 set_default ar as dep_cc ld
2109
2110 test -n "$CC_DEPFLAGS" || CCDEP=$DEPEND_CMD
2111 test -n "$AS_DEPFLAGS" || ASDEP=$DEPEND_CMD
2112
2113 add_cflags $extra_cflags
2114 add_asflags $extra_cflags
2115
2116 if test -n "$sysroot"; then
2117     case "$cc_type" in
2118         gcc|llvm_gcc|clang)
2119             add_cppflags --sysroot="$sysroot"
2120             add_ldflags --sysroot="$sysroot"
2121         ;;
2122         tms470)
2123             add_cppflags -I"$sysinclude"
2124             add_ldflags  --sysroot="$sysroot"
2125         ;;
2126     esac
2127 fi
2128
2129 if test "$cpu" = host; then
2130     enabled cross_compile && die "--cpu=host makes no sense when cross-compiling."
2131
2132     case "$cc_type" in
2133         gcc|llvm_gcc)
2134             check_native(){
2135                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2136                 sed -n "/$1=/{
2137                             s/.*$1=\\([^ ]*\\).*/\\1/
2138                             p
2139                             q
2140                         }" $TMPE
2141             }
2142             cpu=$(check_native -march || check_native -mcpu)
2143         ;;
2144     esac
2145
2146     test "${cpu:-host}" = host && die "--cpu=host not supported with compiler $cc"
2147 fi
2148
2149 # Deal with common $arch aliases
2150 case "$arch" in
2151     arm*)
2152         arch="arm"
2153     ;;
2154     mips|mipsel|IP*)
2155         arch="mips"
2156     ;;
2157     mips64*)
2158         arch="mips"
2159         subarch="mips64"
2160     ;;
2161     parisc|hppa)
2162         arch="parisc"
2163     ;;
2164     parisc64|hppa64)
2165         arch="parisc"
2166         subarch="parisc64"
2167     ;;
2168     "Power Macintosh"|ppc|powerpc)
2169         arch="ppc"
2170     ;;
2171     ppc64|powerpc64)
2172         arch="ppc"
2173         subarch="ppc64"
2174     ;;
2175     s390|s390x)
2176         arch="s390"
2177     ;;
2178     sh4|sh)
2179         arch="sh4"
2180     ;;
2181     sun4u|sparc64)
2182         arch="sparc"
2183         subarch="sparc64"
2184     ;;
2185     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
2186         arch="x86"
2187     ;;
2188 esac
2189
2190 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2191 enable $arch
2192
2193 # Add processor-specific flags
2194 if test "$cpu" = generic; then
2195     : do nothing
2196 elif enabled ppc; then
2197
2198     case $(tolower $cpu) in
2199         601|ppc601|powerpc601)
2200             cpuflags="-mcpu=601"
2201             disable altivec
2202         ;;
2203         603*|ppc603*|powerpc603*)
2204             cpuflags="-mcpu=603"
2205             disable altivec
2206         ;;
2207         604*|ppc604*|powerpc604*)
2208             cpuflags="-mcpu=604"
2209             disable altivec
2210         ;;
2211         g3|75*|ppc75*|powerpc75*)
2212             cpuflags="-mcpu=750 -mpowerpc-gfxopt"
2213             disable altivec
2214         ;;
2215         g4|745*|ppc745*|powerpc745*)
2216             cpuflags="-mcpu=7450 -mpowerpc-gfxopt"
2217         ;;
2218         74*|ppc74*|powerpc74*)
2219             cpuflags="-mcpu=7400 -mpowerpc-gfxopt"
2220         ;;
2221         g5|970|ppc970|powerpc970|power4*)
2222             cpuflags="-mcpu=970 -mpowerpc-gfxopt -mpowerpc64"
2223         ;;
2224         cell)
2225             cpuflags="-mcpu=cell"
2226             enable ldbrx
2227         ;;
2228         e500v2)
2229             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
2230             disable altivec
2231         ;;
2232         e500)
2233             cpuflags="-mcpu=8540 -mhard-float"
2234             disable altivec
2235         ;;
2236     esac
2237
2238 elif enabled x86; then
2239
2240     case $cpu in
2241         i[345]86|pentium)
2242             cpuflags="-march=$cpu"
2243             disable mmx
2244         ;;
2245         # targets that do NOT support conditional mov (cmov)
2246         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
2247             cpuflags="-march=$cpu"
2248             disable cmov
2249         ;;
2250         # targets that do support conditional mov (cmov)
2251         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64|k8|opteron|athlon-fx|core2|amdfam10|barcelona|atom)
2252             cpuflags="-march=$cpu"
2253             enable cmov
2254             enable fast_cmov
2255         ;;
2256         # targets that do support conditional mov but on which it's slow
2257         pentium4|pentium4m|prescott|nocona)
2258             cpuflags="-march=$cpu"
2259             enable cmov
2260             disable fast_cmov
2261         ;;
2262     esac
2263
2264 elif enabled sparc; then
2265
2266     case $cpu in
2267         niagara)
2268             cpuflags="-mcpu=$cpu"
2269             disable vis
2270         ;;
2271         sparc64)
2272             cpuflags="-mcpu=v9"
2273         ;;
2274     esac
2275
2276 elif enabled arm; then
2277
2278     case $cpu in
2279         armv*)
2280             cpuflags="-march=$cpu"
2281             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
2282         ;;
2283         *)
2284             cpuflags="-mcpu=$cpu"
2285             case $cpu in
2286                 cortex-a*)                               subarch=armv7a  ;;
2287                 cortex-r*)                               subarch=armv7r  ;;
2288                 cortex-m*)                               subarch=armv7m  ;;
2289                 arm11*)                                  subarch=armv6   ;;
2290                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
2291                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
2292             esac
2293         ;;
2294     esac
2295
2296 elif enabled alpha; then
2297
2298     enabled ccc && cpuflags="-arch $cpu" || cpuflags="-mcpu=$cpu"
2299
2300 elif enabled bfin; then
2301
2302     cpuflags="-mcpu=$cpu"
2303
2304 elif enabled mips; then
2305
2306     cpuflags="-march=$cpu"
2307
2308 elif enabled avr32; then
2309
2310     case $cpu in
2311         ap7[02]0[0-2])
2312             subarch="avr32_ap"
2313             cpuflags="-mpart=$cpu"
2314         ;;
2315         ap)
2316             subarch="avr32_ap"
2317             cpuflags="-march=$cpu"
2318         ;;
2319         uc3[ab]*)
2320             subarch="avr32_uc"
2321             cpuflags="-mcpu=$cpu"
2322         ;;
2323         uc)
2324             subarch="avr32_uc"
2325             cpuflags="-march=$cpu"
2326         ;;
2327     esac
2328
2329 fi
2330
2331 add_cflags $cpuflags
2332 add_asflags $cpuflags
2333
2334 # compiler sanity check
2335 check_exec <<EOF
2336 int main(void){ return 0; }
2337 EOF
2338 if test "$?" != 0; then
2339     echo "$cc is unable to create an executable file."
2340     if test -z "$cross_prefix" && ! enabled cross_compile ; then
2341         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
2342         echo "Only do this if you know what cross compiling means."
2343     fi
2344     die "C compiler test failed."
2345 fi
2346
2347 add_cppflags -D_ISOC99_SOURCE
2348 check_cflags -std=c99
2349 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
2350 #include <stdlib.h>
2351 EOF
2352 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
2353 #include <stdlib.h>
2354 EOF
2355
2356 check_host_cflags -std=c99
2357
2358 case "$arch" in
2359     alpha|ia64|mips|parisc|sparc)
2360         spic=$shared
2361     ;;
2362     x86)
2363         subarch="x86_32"
2364         check_cc <<EOF && subarch="x86_64"
2365         int test[(int)sizeof(char*) - 7];
2366 EOF
2367         if test "$subarch" = "x86_64"; then
2368             spic=$shared
2369         fi
2370     ;;
2371 esac
2372
2373 enable $subarch
2374 enabled spic && enable pic
2375
2376 # OS specific
2377 case $target_os in
2378     haiku)
2379         prefix_default="/boot/common"
2380         network_extralibs="-lnetwork"
2381         host_libs=
2382         ;;
2383     sunos)
2384         FFSERVERLDFLAGS=""
2385         SHFLAGS='-shared -Wl,-h,$$(@F)'
2386         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
2387         network_extralibs="-lsocket -lnsl"
2388         add_cppflags -D__EXTENSIONS__
2389         nm_opts='-P -g'
2390         ;;
2391     netbsd)
2392         disable symver
2393         oss_indev_extralibs="-lossaudio"
2394         oss_outdev_extralibs="-lossaudio"
2395         ;;
2396     openbsd)
2397         enable malloc_aligned
2398         # On OpenBSD 4.5. the compiler does not use PIC unless
2399         # explicitly using -fPIC. FFmpeg builds fine without PIC,
2400         # however the generated executable will not do anything
2401         # (simply quits with exit-code 1, no crash, no output).
2402         # Thus explicitly enable PIC here.
2403         enable pic
2404         disable symver
2405         SHFLAGS='-shared'
2406         oss_indev_extralibs="-lossaudio"
2407         oss_outdev_extralibs="-lossaudio"
2408         ;;
2409     dragonfly)
2410         enable malloc_aligned
2411         disable symver
2412         ;;
2413     freebsd)
2414         enable malloc_aligned
2415         ;;
2416     bsd/os)
2417         add_extralibs -lpoll -lgnugetopt
2418         strip="strip -d"
2419         ;;
2420     darwin)
2421         enable malloc_aligned
2422         gas="gas-preprocessor.pl $cc"
2423         enabled ppc && add_asflags -force_cpusubtype_ALL
2424         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
2425         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
2426         strip="${strip} -x"
2427         add_ldflags -Wl,-dynamic,-search_paths_first
2428         SLIBSUF=".dylib"
2429         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
2430         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
2431         FFSERVERLDFLAGS=-Wl,-bind_at_load
2432         objformat="macho"
2433         enabled x86_64 && objformat="macho64"
2434         enabled_any pic shared ||
2435             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
2436         ;;
2437     mingw32*)
2438         if test $target_os = "mingw32ce"; then
2439             disable network
2440         else
2441             target_os=mingw32
2442         fi
2443         LIBTARGET=i386
2444         if enabled x86_64; then
2445             enable malloc_aligned
2446             LIBTARGET=x64
2447         elif enabled arm; then
2448             LIBTARGET=arm-wince
2449         fi
2450         shlibdir_default="$bindir_default"
2451         SLIBPREF=""
2452         SLIBSUF=".dll"
2453         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
2454         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
2455         SLIB_EXTRA_CMD='-lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.lib)'
2456         SLIB_INSTALL_EXTRA_CMD='-install -m 644 $(SUBDIR)$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.lib) "$(SHLIBDIR)/$(SLIBNAME:$(SLIBSUF)=.lib)"; \
2457             install -m 644 $(SUBDIR)$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.lib) "$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.lib)"; \
2458             install -d "$(LIBDIR)"; \
2459             install -m 644 $(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) "$(LIBDIR)/lib$(SLIBNAME:$(SLIBSUF)=.dll.a)"'
2460         SLIB_UNINSTALL_EXTRA_CMD='rm -f "$(SHLIBDIR)/$(SLIBNAME:$(SLIBSUF)=.lib)"'
2461         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'
2462         objformat="win32"
2463         enable dos_paths
2464         check_cflags -fno-common
2465         check_cpp_condition _mingw.h "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) \
2466                                       || (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
2467                 die "ERROR: MinGW runtime version must be >= 3.15."
2468         add_cppflags -U__STRICT_ANSI__
2469         ;;
2470     cygwin*)
2471         target_os=cygwin
2472         shlibdir_default="$bindir_default"
2473         SLIBPREF="cyg"
2474         SLIBSUF=".dll"
2475         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
2476         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
2477         SHFLAGS='-shared -Wl,--enable-auto-image-base'
2478         objformat="win32"
2479         enable dos_paths
2480         check_cflags -fno-common
2481         ;;
2482     *-dos|freedos|opendos)
2483         network_extralibs="-lsocket"
2484         objformat="coff"
2485         enable dos_paths
2486         ;;
2487     linux)
2488         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
2489         enable dv1394
2490         ;;
2491     irix*)
2492         target_os=irix
2493         ranlib="echo ignoring ranlib"
2494         ;;
2495     os/2*)
2496         strip="lxlite -CS"
2497         ln_s="cp -f"
2498         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
2499         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
2500         FFSERVERLDFLAGS=""
2501         LIBSUF="_s.a"
2502         SLIBPREF=""
2503         SLIBSUF=".dll"
2504         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
2505         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
2506         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
2507           echo PROTMODE >> $(SUBDIR)$(NAME).def; \
2508           echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
2509           echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
2510           echo EXPORTS >> $(SUBDIR)$(NAME).def; \
2511           emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
2512         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
2513           emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
2514         SLIB_INSTALL_EXTRA_CMD='install -m 644 $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib "$(LIBDIR)"'
2515         SLIB_UNINSTALL_EXTRA_CMD='rm -f "$(LIBDIR)"/$(LIBPREF)$(NAME)_dll.a "$(LIBDIR)"/$(LIBPREF)$(NAME)_dll.lib'
2516         enable dos_paths
2517         ;;
2518     gnu/kfreebsd)
2519         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -D_BSD_SOURCE
2520         ;;
2521     gnu)
2522         ;;
2523     qnx)
2524         add_cppflags -D_QNX_SOURCE
2525         network_extralibs="-lsocket"
2526         ;;
2527     symbian)
2528         SLIBSUF=".dll"
2529         enable dos_paths
2530         add_cflags --include=$sysinclude/gcce/gcce.h
2531         ;;
2532     none)
2533         ;;
2534     *)
2535         die "Unknown OS '$target_os'."
2536         ;;
2537 esac
2538
2539 echo "config:$arch:$subarch:$cpu:$target_os:$cc_ident:$FFMPEG_CONFIGURATION" >config.fate
2540
2541 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable pic
2542
2543 set_default $PATHS_LIST
2544
2545 # we need to build at least one lib type
2546 if ! enabled_any static shared; then
2547     cat <<EOF
2548 At least one library type must be built.
2549 Specify --enable-static to build the static libraries or --enable-shared to
2550 build the shared libraries as well. To only build the shared libraries specify
2551 --disable-static in addition to --enable-shared.
2552 EOF
2553     exit 1;
2554 fi
2555
2556 disabled static && LIBNAME=""
2557
2558 die_license_disabled() {
2559     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
2560 }
2561
2562 die_license_disabled gpl libx264
2563 die_license_disabled gpl libxavs
2564 die_license_disabled gpl libxvid
2565 die_license_disabled gpl x11grab
2566
2567 die_license_disabled nonfree libfaac
2568
2569 die_license_disabled version3 libopencore_amrnb
2570 die_license_disabled version3 libopencore_amrwb
2571 die_license_disabled version3 libvo_aacenc
2572 die_license_disabled version3 libvo_amrwbenc
2573
2574 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2575
2576 disabled optimizations || check_cflags -fomit-frame-pointer
2577
2578 enable_pic() {
2579     enable pic
2580     add_cppflags -DPIC
2581     add_cflags   -fPIC
2582     add_asflags  -fPIC
2583 }
2584
2585 enabled pic && enable_pic
2586
2587 check_cc <<EOF || die "Symbol mangling check failed."
2588 int ff_extern;
2589 EOF
2590 sym=$($nm $nm_opts $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
2591 extern_prefix=${sym%%ff_extern*}
2592
2593 check_cc <<EOF && enable inline_asm
2594 void foo(void) { __asm__ volatile ("" ::); }
2595 EOF
2596
2597 _restrict=
2598 for restrict_keyword in restrict __restrict__ __restrict; do
2599     check_cc <<EOF && _restrict=$restrict_keyword && break
2600 void foo(char * $restrict_keyword p);
2601 EOF
2602 done
2603
2604 check_cc <<EOF && enable attribute_packed
2605 struct { int x; } __attribute__((packed)) x;
2606 EOF
2607
2608 check_cc <<EOF && enable attribute_may_alias
2609 union { int x; } __attribute__((may_alias)) x;
2610 EOF
2611
2612 check_cc <<EOF || die "endian test failed"
2613 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
2614 EOF
2615 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
2616
2617 if enabled alpha; then
2618
2619     check_cflags -mieee
2620
2621 elif enabled arm; then
2622
2623     check_cflags -marm
2624     nogas=die
2625
2626     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
2627         enable vfp_args
2628     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
2629         case "${cross_prefix:-$cc}" in
2630             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
2631             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
2632 __asm__ (".eabi_attribute 28, 1");
2633 int main(void) { return 0; }
2634 EOF
2635         esac
2636         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
2637     fi
2638
2639     # We have to check if pld is a nop and disable it.
2640     check_asm pld '"pld [r0]"'
2641
2642     enabled armv5te && check_asm armv5te '"qadd r0, r0, r0"'
2643     enabled armv6   && check_asm armv6   '"sadd16 r0, r0, r0"'
2644     enabled armv6t2 && check_asm armv6t2 '"movt r0, #0"'
2645     enabled armvfp  && check_asm armvfp  '"fadds s0, s0, s0"'
2646     enabled iwmmxt  && check_asm iwmmxt  '"wunpckelub wr6, wr4"'
2647     enabled neon    && check_asm neon    '"vadd.i16 q0, q0, q0"'
2648
2649     enabled_all armv6t2 shared !pic && enable_pic
2650
2651 elif enabled mips; then
2652
2653     check_asm loongson '"dmult.g $1, $2, $3"'
2654     enabled mmi     && check_asm mmi     '"lq $2, 0($2)"'
2655
2656 elif enabled ppc; then
2657
2658     enable local_aligned_8 local_aligned_16
2659
2660     check_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
2661     check_asm ibm_asm   '"add 0, 0, 0"'
2662     check_asm ppc4xx    '"maclhw r10, r11, r12"'
2663     check_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
2664
2665     # AltiVec flags: The FSF version of GCC differs from the Apple version
2666     if enabled altivec; then
2667         nogas=warn
2668         check_cflags -maltivec -mabi=altivec &&
2669         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
2670         check_cflags -faltivec
2671
2672         # check if our compiler supports Motorola AltiVec C API
2673         check_cc <<EOF || disable altivec
2674 $inc_altivec_h
2675 int main(void) {
2676     vector signed int v1, v2, v3;
2677     v1 = vec_add(v2,v3);
2678     return 0;
2679 }
2680 EOF
2681
2682         # check if our compiler supports braces for vector declarations
2683         check_cc <<EOF || die "You need a compiler that supports {} in AltiVec vector declarations."
2684 $inc_altivec_h
2685 int main (void) { (vector int) {1}; return 0; }
2686 EOF
2687     fi
2688
2689 elif enabled sparc; then
2690
2691     enabled vis && check_asm vis '"pdist %f0, %f0, %f0"' -mcpu=ultrasparc &&
2692         add_cflags -mcpu=ultrasparc -mtune=ultrasparc
2693
2694 elif enabled x86; then
2695
2696     enable local_aligned_8 local_aligned_16
2697
2698     # check whether EBP is available on x86
2699     # As 'i' is stored on the stack, this program will crash
2700     # if the base pointer is used to access it because the
2701     # base pointer is cleared in the inline assembly code.
2702     check_exec_crash <<EOF && enable ebp_available
2703     volatile int i=0;
2704     __asm__ volatile (
2705         "xorl %%ebp, %%ebp"
2706     ::: "%ebp");
2707     return i;
2708 EOF
2709
2710     # check whether EBX is available on x86
2711     check_asm ebx_available '""::"b"(0)' &&
2712         check_asm ebx_available '"":::"%ebx"'
2713
2714     # check whether xmm clobbers are supported
2715     check_asm xmm_clobbers '"":::"%xmm0"'
2716
2717     # check whether more than 10 operands are supported
2718     check_cc <<EOF && enable ten_operands
2719 int main(void) {
2720     int x=0;
2721     __asm__ volatile(
2722         ""
2723         :"+&rm"(x), "+&rm"(x), "+&rm"(x), "+&rm"(x), "+&rm"(x), "+&rm"(x)
2724     );
2725     return 0;
2726 }
2727 EOF
2728
2729     # check whether binutils is new enough to compile SSSE3/MMX2
2730     enabled ssse3 && check_asm ssse3 '"pabsw %xmm0, %xmm0"'
2731     enabled mmx2  && check_asm mmx2  '"pmaxub %mm0, %mm1"'
2732
2733     check_asm bswap '"bswap %%eax" ::: "%eax"'
2734
2735     if ! disabled_any asm mmx yasm; then
2736         if check_cmd $yasmexe --version; then
2737             enabled x86_64 && yasm_extra="-m amd64"
2738             yasm_debug="-g dwarf2"
2739         elif check_cmd nasm -v; then
2740             yasmexe=nasm
2741             yasm_debug="-g -F dwarf"
2742             enabled x86_64 && test "$objformat" = elf && objformat=elf64
2743         fi
2744
2745         YASMFLAGS="-f $objformat $yasm_extra"
2746         enabled pic               && append YASMFLAGS "-DPIC"
2747         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
2748         case "$objformat" in
2749             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
2750         esac
2751
2752         check_yasm "pextrd [eax], xmm0, 1" && enable yasm ||
2753             die "yasm not found, use --disable-yasm for a crippled build"
2754         check_yasm "vpaddw xmm0, xmm0, xmm0" || disable avx
2755     fi
2756
2757     case "$cpu" in
2758         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
2759             disable fast_clz
2760         ;;
2761     esac
2762
2763 fi
2764
2765 if enabled asm; then
2766     as=${gas:=$as}
2767     check_asm gnu_as '".macro m n\n\\n:.int 0\n.endm\nm x"' ||
2768         $nogas "GNU assembler not found, install gas-preprocessor"
2769 fi
2770
2771 check_ldflags -Wl,--as-needed
2772
2773 if check_func dlopen; then
2774     ldl=
2775 elif check_func dlopen -ldl; then
2776     ldl=-ldl
2777 fi
2778
2779 if enabled network; then
2780     check_type "sys/types.h sys/socket.h" socklen_t
2781     check_type netdb.h "struct addrinfo"
2782     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
2783     check_type netinet/in.h "struct sockaddr_in6"
2784     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
2785     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
2786     # Prefer arpa/inet.h over winsock2
2787     if check_header arpa/inet.h ; then
2788         check_func closesocket
2789     elif check_header winsock2.h ; then
2790         check_func_headers winsock2.h closesocket -lws2 && \
2791             network_extralibs="-lws2" || \
2792         { check_func_headers winsock2.h closesocket -lws2_32 && \
2793             network_extralibs="-lws2_32"; }
2794         check_type ws2tcpip.h socklen_t
2795         check_type ws2tcpip.h "struct addrinfo"
2796         check_type ws2tcpip.h "struct ipv6_mreq"
2797         check_type ws2tcpip.h "struct sockaddr_in6"
2798         check_type ws2tcpip.h "struct sockaddr_storage"
2799         check_struct winsock2.h "struct sockaddr" sa_len
2800     else
2801         disable network
2802     fi
2803 fi
2804
2805 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
2806 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
2807
2808 check_func  fcntl
2809 check_func  fork
2810 check_func  getaddrinfo $network_extralibs
2811 check_func  gethrtime
2812 check_func  getrusage
2813 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
2814 check_func  inet_aton $network_extralibs
2815 check_func  isatty
2816 check_func  localtime_r
2817 check_func  ${malloc_prefix}memalign            && enable memalign
2818 check_func  mkstemp
2819 check_func  mmap
2820 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
2821 check_func  setrlimit
2822 check_func  strerror_r
2823 check_func  strtok_r
2824 check_func_headers conio.h kbhit
2825 check_func_headers io.h setmode
2826 check_func_headers lzo/lzo1x.h lzo1x_999_compress
2827 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
2828 check_func_headers windows.h GetProcessTimes
2829 check_func_headers windows.h MapViewOfFile
2830 check_func_headers windows.h VirtualAlloc
2831
2832 check_header dlfcn.h
2833 check_header dxva2api.h
2834 check_header libcrystalhd/libcrystalhd_if.h
2835 check_header malloc.h
2836 check_header poll.h
2837 check_header sys/mman.h
2838 check_header sys/resource.h
2839 check_header sys/select.h
2840 check_header termios.h
2841 check_header vdpau/vdpau.h
2842 check_header vdpau/vdpau_x11.h
2843 check_header X11/extensions/XvMClib.h
2844
2845 check_struct dxva2api.h DXVA_PictureParameters wDecodedPictureIndex
2846
2847 if ! enabled_any memalign memalign_hack posix_memalign malloc_aligned &&
2848      enabled_any $need_memalign ; then
2849     die "Error, no aligned memory allocator but SSE enabled, disable it or use --enable-memalign-hack."
2850 fi
2851
2852 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
2853 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
2854
2855 # check for some common methods of building with pthread support
2856 # do this before the optional library checks as some of them require pthreads
2857 if ! disabled pthreads && ! enabled w32threads; then
2858     enable pthreads
2859     if check_func pthread_create; then
2860         :
2861     elif check_func pthread_create -pthread; then
2862         add_cflags -pthread
2863         add_extralibs -pthread
2864     elif check_func pthread_create -pthreads; then
2865         add_cflags -pthreads
2866         add_extralibs -pthreads
2867     elif check_func pthread_create -lpthreadGC2; then
2868         add_extralibs -lpthreadGC2
2869     elif ! check_lib pthread.h pthread_create -lpthread; then
2870         disable pthreads
2871     fi
2872 fi
2873
2874 for thread in $THREADS_LIST; do
2875     if enabled $thread; then
2876         test -n "$thread_type" &&
2877             die "ERROR: Only one thread type must be selected." ||
2878             thread_type="$thread"
2879     fi
2880 done
2881
2882 check_lib math.h sin -lm && LIBM="-lm"
2883 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
2884 enabled vaapi && require vaapi va/va.h vaInitialize -lva
2885
2886 check_mathfunc exp2
2887 check_mathfunc exp2f
2888 check_mathfunc llrint
2889 check_mathfunc llrintf
2890 check_mathfunc log2
2891 check_mathfunc log2f
2892 check_mathfunc lrint
2893 check_mathfunc lrintf
2894 check_mathfunc round
2895 check_mathfunc roundf
2896 check_mathfunc trunc
2897 check_mathfunc truncf
2898
2899 # these are off by default, so fail if requested and not available
2900 enabled avisynth   && require2 vfw32 "windows.h vfw.h" AVIFileInit -lavifil32
2901 enabled libcelt    && require libcelt celt/celt.h celt_decode -lcelt0
2902 enabled frei0r     && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
2903 enabled libdirac   && require_pkg_config dirac                          \
2904     "libdirac_decoder/dirac_parser.h libdirac_encoder/dirac_encoder.h"  \
2905     "dirac_decoder_init dirac_encoder_init"
2906 enabled libfaac    && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
2907 enabled libfreetype && require_pkg_config freetype2 "ft2build.h freetype/freetype.h" FT_Init_FreeType
2908 enabled libgsm     && require  libgsm gsm/gsm.h gsm_create -lgsm
2909 enabled libmp3lame && require  "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
2910 enabled libnut     && require  libnut libnut.h nut_demuxer_init -lnut
2911 enabled libopencore_amrnb  && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
2912 enabled libopencore_amrwb  && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
2913 enabled libopencv  && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
2914 enabled libopenjpeg && require libopenjpeg openjpeg.h opj_version -lopenjpeg
2915 enabled librtmp    && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
2916 enabled libschroedinger && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
2917 enabled libspeex   && require  libspeex speex/speex.h speex_decoder_init -lspeex
2918 enabled libtheora  && require  libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
2919 enabled libvo_aacenc && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
2920 enabled libvo_amrwbenc && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
2921 enabled libvorbis  && require  libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
2922 enabled libvpx     && {
2923     enabled libvpx_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
2924                                 die "ERROR: libvpx decoder version must be >=0.9.1"; }
2925     enabled libvpx_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
2926                                 die "ERROR: libvpx encoder version must be >=0.9.6"; } }
2927 enabled libx264    && require  libx264 x264.h x264_encoder_encode -lx264 &&
2928                       { check_cpp_condition x264.h "X264_BUILD >= 99" ||
2929                         die "ERROR: libx264 version must be >= 0.99."; }
2930 enabled libxavs    && require  libxavs xavs.h xavs_encoder_encode -lxavs
2931 enabled libxvid    && require  libxvid xvid.h xvid_global -lxvidcore
2932 enabled mlib       && require  mediaLib mlib_types.h mlib_VectorSub_S16_U8_Mod -lmlib
2933
2934 # libdc1394 check
2935 if enabled libdc1394; then
2936     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
2937         enable libdc1394_2; } ||
2938     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
2939         enable libdc1394_1; } ||
2940     die "ERROR: No version of libdc1394 found "
2941 fi
2942
2943 SDL_CONFIG="${cross_prefix}sdl-config"
2944 if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
2945     sdl_cflags=$("${SDL_CONFIG}" --cflags)
2946     sdl_libs=$("${SDL_CONFIG}" --libs)
2947     check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
2948     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
2949     enable sdl &&
2950     check_struct SDL.h SDL_VideoInfo current_w $sdl_cflags && enable sdl_video_size
2951 else
2952     if check_pkg_config sdl SDL_version.h SDL_Linked_Version; then
2953         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
2954         enable sdl &&
2955         check_struct SDL.h SDL_VideoInfo current_w $sdl_cflags && enable sdl_video_size
2956     fi
2957 fi
2958
2959 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
2960
2961 check_header linux/fb.h
2962 check_header linux/videodev.h
2963 check_header linux/videodev2.h
2964 check_header sys/videoio.h
2965
2966 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
2967 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
2968 # w32api 3.12 had it defined wrong
2969 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
2970
2971 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
2972 { check_header dev/bktr/ioctl_meteor.h &&
2973   check_header dev/bktr/ioctl_bt848.h; } ||
2974 { check_header machine/ioctl_meteor.h &&
2975   check_header machine/ioctl_bt848.h; } ||
2976 { check_header dev/video/meteor/ioctl_meteor.h &&
2977   check_header dev/video/bktr/ioctl_bt848.h; } ||
2978 check_header dev/ic/bt8xx.h
2979
2980 check_header sndio.h
2981 if check_struct sys/soundcard.h audio_buf_info bytes; then
2982     enable_safe sys/soundcard.h
2983 else
2984     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
2985     #include <sys/soundcard.h>
2986     audio_buf_info abc;
2987 EOF
2988 fi
2989 check_header soundcard.h
2990
2991 enabled_any alsa_indev alsa_outdev && check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
2992
2993 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait
2994
2995 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
2996
2997 enabled x11grab                         &&
2998 check_header X11/Xlib.h                 &&
2999 check_header X11/extensions/XShm.h      &&
3000 check_header X11/extensions/Xfixes.h    &&
3001 check_func XOpenDisplay -lX11           &&
3002 check_func XShmCreateImage -lX11 -lXext &&
3003 check_func XFixesGetCursorImage -lX11 -lXext -lXfixes
3004
3005 if ! disabled vaapi; then
3006     check_lib va/va.h vaInitialize -lva && {
3007         check_cpp_condition va/va_version.h "VA_CHECK_VERSION(0,32,0)" ||
3008         warn "Please upgrade to VA-API >= 0.32 if you would like full VA-API support.";
3009     } || disable vaapi
3010 fi
3011
3012 if ! disabled vdpau && enabled vdpau_vdpau_h; then
3013 check_cpp_condition \
3014     vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
3015     { echolog "Please upgrade to libvdpau >= 0.2 if you would like vdpau support." &&
3016       disable vdpau; }
3017 fi
3018
3019 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
3020
3021 # add some useful compiler flags if supported
3022 check_cflags -Wdeclaration-after-statement
3023 check_cflags -Wall
3024 check_cflags -Wno-parentheses
3025 check_cflags -Wno-switch
3026 check_cflags -Wdisabled-optimization
3027 check_cflags -Wpointer-arith
3028 check_cflags -Wredundant-decls
3029 check_cflags -Wno-pointer-sign
3030 check_cflags -Wcast-qual
3031 check_cflags -Wwrite-strings
3032 check_cflags -Wtype-limits
3033 check_cflags -Wundef
3034 check_cflags -Wmissing-prototypes
3035 check_cflags -Wno-pointer-to-int-cast
3036 enabled extra_warnings && check_cflags -Winline
3037
3038 # add some linker flags
3039 check_ldflags -Wl,--warn-common
3040 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'
3041 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
3042
3043 echo "X{};" > $TMPV
3044 if test_ldflags -Wl,--version-script,$TMPV; then
3045     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
3046     check_cc <<EOF && enable symver_asm_label
3047 void ff_foo(void) __asm__ ("av_foo@VERSION");
3048 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
3049 EOF
3050     check_cc <<EOF && enable symver_gnu_asm
3051 __asm__(".symver ff_foo,av_foo@VERSION");
3052 void ff_foo(void) {}
3053 EOF
3054 fi
3055
3056 if enabled small; then
3057     add_cflags $size_cflags
3058     optimizations="small"
3059 elif enabled optimizations; then
3060     add_cflags $speed_cflags
3061 else
3062     add_cflags $noopt_cflags
3063 fi
3064 check_cflags -fno-math-errno
3065 check_cflags -fno-signed-zeros
3066
3067 if enabled icc; then
3068     # Just warnings, no remarks
3069     check_cflags -w1
3070     # -wd: Disable following warnings
3071     # 144, 167, 556: -Wno-pointer-sign
3072     # 1292: attribute "foo" ignored
3073     # 10006: ignoring unknown option -fno-signed-zeros
3074     # 10148: ignoring unknown option -Wno-parentheses
3075     # 10156: ignoring option '-W'; no argument required
3076     check_cflags -wd144,167,556,1292,10006,10148,10156
3077     # 11030: Warning unknown option --as-needed
3078     # 10156: ignoring option '-export'; no argument required
3079     check_ldflags -wd10156,11030
3080     # Allow to compile with optimizations
3081     check_ldflags -march=$cpu
3082     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
3083     enable ebp_available
3084     if enabled x86_32; then
3085         test ${icc_version%%.*} -ge 11 && \
3086             check_cflags -falign-stack=maintain-16-byte || \
3087             disable aligned_stack
3088     fi
3089 elif enabled ccc; then
3090     # disable some annoying warnings
3091     add_cflags -msg_disable cvtu32to64
3092     add_cflags -msg_disable embedcomment
3093     add_cflags -msg_disable needconstext
3094     add_cflags -msg_disable nomainieee
3095     add_cflags -msg_disable ptrmismatch1
3096     add_cflags -msg_disable unreachcode
3097 elif enabled gcc; then
3098     check_cflags -fno-tree-vectorize
3099     check_cflags -Werror=implicit-function-declaration
3100     check_cflags -Werror=missing-prototypes
3101 elif enabled llvm_gcc; then
3102     check_cflags -mllvm -stack-alignment=16
3103 elif enabled clang; then
3104     check_cflags -mllvm -stack-alignment=16
3105     check_cflags -Qunused-arguments
3106 elif enabled armcc; then
3107     # 2523: use of inline assembler is deprecated
3108     add_cflags -W${armcc_opt},--diag_suppress=2523
3109     add_cflags -W${armcc_opt},--diag_suppress=1207
3110     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
3111     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
3112 elif enabled tms470; then
3113     add_cflags -pds=824 -pds=837
3114 elif enabled pathscale; then
3115     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
3116 fi
3117
3118 enabled_any $THREADS_LIST      && enable threads
3119
3120 check_deps $CONFIG_LIST       \
3121            $CONFIG_EXTRA      \
3122            $HAVE_LIST         \
3123            $DECODER_LIST      \
3124            $ENCODER_LIST      \
3125            $HWACCEL_LIST      \
3126            $PARSER_LIST       \
3127            $BSF_LIST          \
3128            $DEMUXER_LIST      \
3129            $MUXER_LIST        \
3130            $FILTER_LIST       \
3131            $INDEV_LIST        \
3132            $OUTDEV_LIST       \
3133            $PROTOCOL_LIST     \
3134            $ACODEC_TESTS      \
3135            $VCODEC_TESTS      \
3136            $LAVF_TESTS        \
3137            $LAVFI_TESTS       \
3138            $SEEK_TESTS        \
3139
3140 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
3141
3142 echo "install prefix            $prefix"
3143 echo "source path               $source_path"
3144 echo "C compiler                $cc"
3145 echo "ARCH                      $arch ($cpu)"
3146 if test "$build_suffix" != ""; then
3147     echo "build suffix              $build_suffix"
3148 fi
3149 if test "$extra_version" != ""; then
3150     echo "version string suffix     $extra_version"
3151 fi
3152 echo "big-endian                ${bigendian-no}"
3153 echo "runtime cpu detection     ${runtime_cpudetect-no}"
3154 if enabled x86; then
3155     echo "yasm                      ${yasm-no}"
3156     echo "MMX enabled               ${mmx-no}"
3157     echo "MMX2 enabled              ${mmx2-no}"
3158     echo "3DNow! enabled            ${amd3dnow-no}"
3159     echo "3DNow! extended enabled   ${amd3dnowext-no}"
3160     echo "SSE enabled               ${sse-no}"
3161     echo "SSSE3 enabled             ${ssse3-no}"
3162     echo "AVX enabled               ${avx-no}"
3163     echo "CMOV enabled              ${cmov-no}"
3164     echo "CMOV is fast              ${fast_cmov-no}"
3165     echo "EBX available             ${ebx_available-no}"
3166     echo "EBP available             ${ebp_available-no}"
3167     echo "10 operands supported     ${ten_operands-no}"
3168 fi
3169 if enabled arm; then
3170     echo "ARMv5TE enabled           ${armv5te-no}"
3171     echo "ARMv6 enabled             ${armv6-no}"
3172     echo "ARMv6T2 enabled           ${armv6t2-no}"
3173     echo "ARM VFP enabled           ${armvfp-no}"
3174     echo "IWMMXT enabled            ${iwmmxt-no}"
3175     echo "NEON enabled              ${neon-no}"
3176 fi
3177 if enabled mips; then
3178     echo "MMI enabled               ${mmi-no}"
3179 fi
3180 if enabled ppc; then
3181     echo "AltiVec enabled           ${altivec-no}"
3182     echo "PPC 4xx optimizations     ${ppc4xx-no}"
3183     echo "dcbzl available           ${dcbzl-no}"
3184 fi
3185 if enabled sparc; then
3186     echo "VIS enabled               ${vis-no}"
3187 fi
3188 echo "debug symbols             ${debug-no}"
3189 echo "strip symbols             ${stripping-no}"
3190 echo "optimizations             ${optimizations-no}"
3191 echo "static                    ${static-no}"
3192 echo "shared                    ${shared-no}"
3193 echo "postprocessing support    ${postproc-no}"
3194 echo "new filter support        ${avfilter-no}"
3195 echo "network support           ${network-no}"
3196 echo "threading support         ${thread_type-no}"
3197 echo "SDL support               ${sdl-no}"
3198 echo "Sun medialib support      ${mlib-no}"
3199 echo "AVISynth enabled          ${avisynth-no}"
3200 echo "libcelt enabled           ${libcelt-no}"
3201 echo "frei0r enabled            ${frei0r-no}"
3202 echo "libdc1394 support         ${libdc1394-no}"
3203 echo "libdirac enabled          ${libdirac-no}"
3204 echo "libfaac enabled           ${libfaac-no}"
3205 echo "libgsm enabled            ${libgsm-no}"
3206 echo "libmp3lame enabled        ${libmp3lame-no}"
3207 echo "libnut enabled            ${libnut-no}"
3208 echo "libopencore-amrnb support ${libopencore_amrnb-no}"
3209 echo "libopencore-amrwb support ${libopencore_amrwb-no}"
3210 echo "libopencv support         ${libopencv-no}"
3211 echo "libopenjpeg enabled       ${libopenjpeg-no}"
3212 echo "librtmp enabled           ${librtmp-no}"
3213 echo "libschroedinger enabled   ${libschroedinger-no}"
3214 echo "libspeex enabled          ${libspeex-no}"
3215 echo "libtheora enabled         ${libtheora-no}"
3216 echo "libva enabled             ${vaapi-no}"
3217 echo "libvo-aacenc support      ${libvo_aacenc-no}"
3218 echo "libvo-amrwbenc support    ${libvo_amrwbenc-no}"
3219 echo "libvorbis enabled         ${libvorbis-no}"
3220 echo "libvpx enabled            ${libvpx-no}"
3221 echo "libx264 enabled           ${libx264-no}"
3222 echo "libxavs enabled           ${libxavs-no}"
3223 echo "libxvid enabled           ${libxvid-no}"
3224 echo "zlib enabled              ${zlib-no}"
3225 echo "bzlib enabled             ${bzlib-no}"
3226 echo
3227
3228 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
3229     echo "Enabled ${type}s:"
3230     eval list=\$$(toupper $type)_LIST
3231     print_enabled '_*' $list | sort | pr -r -3 -t
3232     echo
3233 done
3234
3235 license="LGPL version 2.1 or later"
3236 if enabled nonfree; then
3237     license="nonfree and unredistributable"
3238 elif enabled gplv3; then
3239     license="GPL version 3 or later"
3240 elif enabled lgplv3; then
3241     license="LGPL version 3 or later"
3242 elif enabled gpl; then
3243     license="GPL version 2 or later"
3244 fi
3245
3246 echo "License: $license"
3247
3248 echo "Creating config.mak and config.h..."
3249
3250 # build tree in object directory if source path is different from current one
3251 if enabled source_path_used; then
3252     DIRS="
3253         doc
3254         libavcodec
3255         libavcodec/$arch
3256         libavdevice
3257         libavfilter
3258         libavfilter/$arch
3259         libavfilter/libmpcodecs
3260         libavfilter/libmpcodecs/libvo
3261         libavformat
3262         libavutil
3263         libavutil/$arch
3264         libpostproc
3265         libswscale
3266         libswscale/$arch
3267         tests
3268         tools
3269     "
3270     FILES="
3271         Makefile
3272         common.mak
3273         subdir.mak
3274         doc/texi2pod.pl
3275         libavcodec/Makefile
3276         libavcodec/${arch}/Makefile
3277         libavdevice/Makefile
3278         libavfilter/Makefile
3279         libavfilter/${arch}/Makefile
3280         libavformat/Makefile
3281         libavutil/Makefile
3282         libpostproc/Makefile
3283         libswscale/Makefile
3284     "
3285     map 'mkdir -p $v' $DIRS;
3286     map 'test -f "$source_path/$v" && $ln_s "$source_path/$v" $v' $FILES
3287 fi
3288
3289 enabled stripping || strip="echo skipping strip"
3290
3291 config_files="$TMPH config.mak"
3292
3293 cat > config.mak <<EOF
3294 # Automatically generated by configure - do not modify!
3295 ifndef FFMPEG_CONFIG_MAK
3296 FFMPEG_CONFIG_MAK=1
3297 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
3298 prefix=$prefix
3299 LIBDIR=\$(DESTDIR)$libdir
3300 SHLIBDIR=\$(DESTDIR)$shlibdir
3301 INCDIR=\$(DESTDIR)$incdir
3302 BINDIR=\$(DESTDIR)$bindir
3303 DATADIR=\$(DESTDIR)$datadir
3304 MANDIR=\$(DESTDIR)$mandir
3305 SRC_PATH="$source_path"
3306 SRC_PATH_BARE=$source_path
3307 BUILD_ROOT="$PWD"
3308 CC_IDENT=$cc_ident
3309 ARCH=$arch
3310 CC=$cc
3311 AS=$as
3312 LD=$ld
3313 DEPCC=$dep_cc
3314 YASM=$yasmexe
3315 YASMDEP=$yasmexe
3316 AR=$ar
3317 RANLIB=$ranlib
3318 CP=cp -p
3319 LN_S=$ln_s
3320 STRIP=$strip
3321 CPPFLAGS=$CPPFLAGS
3322 CFLAGS=$CFLAGS
3323 ASFLAGS=$ASFLAGS
3324 CC_O=$CC_O
3325 LDFLAGS=$LDFLAGS
3326 FFSERVERLDFLAGS=$FFSERVERLDFLAGS
3327 SHFLAGS=$SHFLAGS
3328 YASMFLAGS=$YASMFLAGS
3329 BUILDSUF=$build_suffix
3330 FULLNAME=$FULLNAME
3331 LIBPREF=$LIBPREF
3332 LIBSUF=$LIBSUF
3333 LIBNAME=$LIBNAME
3334 SLIBPREF=$SLIBPREF
3335 SLIBSUF=$SLIBSUF
3336 EXESUF=$EXESUF
3337 EXTRA_VERSION=$extra_version
3338 DEPFLAGS=$DEPFLAGS
3339 CCDEP=$CCDEP
3340 ASDEP=$ASDEP
3341 CC_DEPFLAGS=$CC_DEPFLAGS
3342 AS_DEPFLAGS=$AS_DEPFLAGS
3343 HOSTCC=$host_cc
3344 HOSTCFLAGS=$host_cflags
3345 HOSTEXESUF=$HOSTEXESUF
3346 HOSTLDFLAGS=$host_ldflags
3347 HOSTLIBS=$host_libs
3348 TARGET_EXEC=$target_exec
3349 TARGET_PATH=$target_path
3350 SDL_LIBS=$sdl_libs
3351 SDL_CFLAGS=$sdl_cflags
3352 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
3353 EXTRALIBS=$extralibs
3354 INSTALL=install
3355 LIBTARGET=${LIBTARGET}
3356 SLIBNAME=${SLIBNAME}
3357 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
3358 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
3359 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
3360 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
3361 SLIB_INSTALL_EXTRA_CMD=${SLIB_INSTALL_EXTRA_CMD}
3362 SLIB_UNINSTALL_EXTRA_CMD=${SLIB_UNINSTALL_EXTRA_CMD}
3363 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
3364 EOF
3365
3366 get_version(){
3367     name=$1
3368     file=$source_path/$2
3369     eval $(grep "#define ${name}_VERSION_M" "$file" | awk '{ print $2"="$3 }')
3370     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
3371     lcname=$(tolower $name)
3372     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
3373     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
3374 }
3375
3376 get_version LIBSWSCALE  libswscale/swscale.h
3377 get_version LIBPOSTPROC libpostproc/postprocess.h
3378 get_version LIBAVCODEC  libavcodec/version.h
3379 get_version LIBAVDEVICE libavdevice/avdevice.h
3380 get_version LIBAVFORMAT libavformat/version.h
3381 get_version LIBAVUTIL   libavutil/avutil.h
3382 get_version LIBAVFILTER libavfilter/avfilter.h
3383
3384 cat > $TMPH <<EOF
3385 /* Automatically generated by configure - do not modify! */
3386 #ifndef FFMPEG_CONFIG_H
3387 #define FFMPEG_CONFIG_H
3388 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
3389 #define FFMPEG_LICENSE "$(c_escape $license)"
3390 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
3391 #define CC_TYPE "$cc_type"
3392 #define CC_VERSION $cc_version
3393 #define restrict $_restrict
3394 #define EXTERN_PREFIX "${extern_prefix}"
3395 #define EXTERN_ASM ${extern_prefix}
3396 #define SLIBSUF "$SLIBSUF"
3397 EOF
3398
3399 test -n "$malloc_prefix" &&
3400     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
3401
3402 if enabled small || disabled optimizations; then
3403     echo "#undef  av_always_inline"  >> $TMPH
3404     if enabled small; then
3405         echo "#define av_always_inline inline"  >> $TMPH
3406     else
3407         echo "#define av_always_inline av_unused"  >> $TMPH
3408     fi
3409 fi
3410
3411 if enabled yasm; then
3412     append config_files $TMPASM
3413     printf '' >$TMPASM
3414 fi
3415
3416 print_config ARCH_   "$config_files" $ARCH_LIST
3417 print_config HAVE_   "$config_files" $HAVE_LIST
3418 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
3419                                      $CONFIG_EXTRA      \
3420                                      $DECODER_LIST      \
3421                                      $ENCODER_LIST      \
3422                                      $HWACCEL_LIST      \
3423                                      $PARSER_LIST       \
3424                                      $BSF_LIST          \
3425                                      $DEMUXER_LIST      \
3426                                      $MUXER_LIST        \
3427                                      $FILTER_LIST       \
3428                                      $PROTOCOL_LIST     \
3429                                      $INDEV_LIST        \
3430                                      $OUTDEV_LIST       \
3431
3432 cat >>config.mak <<EOF
3433 ACODEC_TESTS=$(print_enabled -n _test $ACODEC_TESTS)
3434 VCODEC_TESTS=$(print_enabled -n _test $VCODEC_TESTS)
3435 LAVF_TESTS=$(print_enabled   -n _test $LAVF_TESTS)
3436 LAVFI_TESTS=$(print_enabled  -n _test $LAVFI_TESTS)
3437 SEEK_TESTS=$(print_enabled   -n _test $SEEK_TESTS)
3438 EOF
3439
3440 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
3441 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
3442
3443 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
3444 cp_if_changed $TMPH config.h
3445 touch .config
3446
3447 enabled yasm && cp_if_changed $TMPASM config.asm
3448
3449 cat > $TMPH <<EOF
3450 /* Generated by ffconf */
3451 #ifndef AVUTIL_AVCONFIG_H
3452 #define AVUTIL_AVCONFIG_H
3453 EOF
3454
3455 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
3456
3457 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
3458
3459 cp_if_changed $TMPH libavutil/avconfig.h
3460
3461 test -n "$WARNINGS" && printf "\n$WARNINGS"
3462
3463 # build pkg-config files
3464
3465 pkgconfig_generate(){
3466 name=$1
3467 shortname=${name#lib}${build_suffix}
3468 comment=$2
3469 version=$3
3470 libs=$4
3471 requires=$5
3472 enabled ${name#lib} || return 0
3473 cat <<EOF > $name/$name.pc
3474 prefix=$prefix
3475 exec_prefix=\${prefix}
3476 libdir=$libdir
3477 includedir=$incdir
3478
3479 Name: $name
3480 Description: $comment
3481 Version: $version
3482 Requires: $(enabled shared || echo $requires)
3483 Requires.private: $(enabled shared && echo $requires)
3484 Conflicts:
3485 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
3486 Libs.private: $(enabled shared && echo $libs)
3487 Cflags: -I\${includedir}
3488 EOF
3489 cat <<EOF > $name/$name-uninstalled.pc
3490 prefix=
3491 exec_prefix=
3492 libdir=\${pcfiledir}
3493 includedir=${source_path}
3494
3495 Name: $name
3496 Description: $comment
3497 Version: $version
3498 Requires: $requires
3499 Conflicts:
3500 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
3501 Cflags: -I\${includedir}
3502 EOF
3503 }
3504
3505 pkgconfig_generate libavutil "FFmpeg utility library" "$LIBAVUTIL_VERSION" "$LIBM"
3506 pkgconfig_generate libavcodec "FFmpeg codec library" "$LIBAVCODEC_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
3507 pkgconfig_generate libavformat "FFmpeg container format library" "$LIBAVFORMAT_VERSION" "$extralibs" "libavcodec = $LIBAVCODEC_VERSION"
3508 pkgconfig_generate libavdevice "FFmpeg device handling library" "$LIBAVDEVICE_VERSION" "$extralibs" "libavformat = $LIBAVFORMAT_VERSION"
3509 pkgconfig_generate libavfilter "FFmpeg video filtering library" "$LIBAVFILTER_VERSION" "$extralibs"
3510 pkgconfig_generate libpostproc "FFmpeg post processing library" "$LIBPOSTPROC_VERSION" "" "libavutil = $LIBAVUTIL_VERSION"
3511 pkgconfig_generate libswscale "FFmpeg image rescaling library" "$LIBSWSCALE_VERSION" "$LIBM" "libavutil = $LIBAVUTIL_VERSION"