AMV: Fix possibly exploitable crash.
[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   --enable-postproc        enable GPLed postprocessing support [no]
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   --disable-mpegaudio-hp   faster (but less accurate) MPEG audio decoding [no]
98   --enable-gray            enable full grayscale support (slower color)
99   --disable-swscale-alpha  disable alpha channel support in swscale
100   --disable-fastdiv        disable table-based division
101   --enable-small           optimize for size instead of speed
102   --disable-aandct         disable AAN DCT code
103   --disable-dct            disable DCT code
104   --disable-fft            disable FFT code
105   --disable-golomb         disable Golomb code
106   --disable-huffman        disable Huffman code
107   --disable-lpc            disable LPC code
108   --disable-mdct           disable MDCT code
109   --disable-rdft           disable RDFT code
110   --disable-vaapi          disable VAAPI code
111   --disable-vdpau          disable VDPAU code
112   --disable-dxva2          disable DXVA2 code
113   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
114   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
115   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
116   --disable-everything     disable all components listed below
117   --disable-encoder=NAME   disable encoder NAME
118   --enable-encoder=NAME    enable encoder NAME
119   --disable-encoders       disable all encoders
120   --disable-decoder=NAME   disable decoder NAME
121   --enable-decoder=NAME    enable decoder NAME
122   --disable-decoders       disable all decoders
123   --disable-hwaccel=NAME   disable hwaccel NAME
124   --enable-hwaccel=NAME    enable hwaccel NAME
125   --disable-hwaccels       disable all hwaccels
126   --disable-muxer=NAME     disable muxer NAME
127   --enable-muxer=NAME      enable muxer NAME
128   --disable-muxers         disable all muxers
129   --disable-demuxer=NAME   disable demuxer NAME
130   --enable-demuxer=NAME    enable demuxer NAME
131   --disable-demuxers       disable all demuxers
132   --enable-parser=NAME     enable parser NAME
133   --disable-parser=NAME    disable parser NAME
134   --disable-parsers        disable all parsers
135   --enable-bsf=NAME        enable bitstream filter NAME
136   --disable-bsf=NAME       disable bitstream filter NAME
137   --disable-bsfs           disable all bitstream filters
138   --enable-protocol=NAME   enable protocol NAME
139   --disable-protocol=NAME  disable protocol NAME
140   --disable-protocols      disable all protocols
141   --disable-indev=NAME     disable input device NAME
142   --disable-outdev=NAME    disable output device NAME
143   --disable-indevs         disable input devices
144   --disable-outdevs        disable output devices
145   --disable-devices        disable all devices
146   --enable-filter=NAME     enable filter NAME
147   --disable-filter=NAME    disable filter NAME
148   --disable-filters        disable all filters
149   --list-decoders          show all available decoders
150   --list-encoders          show all available encoders
151   --list-hwaccels          show all available hardware accelerators
152   --list-muxers            show all available muxers
153   --list-demuxers          show all available demuxers
154   --list-parsers           show all available parsers
155   --list-protocols         show all available protocols
156   --list-bsfs              show all available bitstream filters
157   --list-indevs            show all available input devices
158   --list-outdevs           show all available output devices
159   --list-filters           show all available filters
160
161 External library support:
162   --enable-avisynth        enable reading of AVISynth script files [no]
163   --enable-bzlib           enable bzlib [autodetect]
164   --enable-libcelt         enable CELT/Opus decoding via libcelt [no]
165   --enable-frei0r          enable frei0r video filtering
166   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
167   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
168   --enable-libopencv       enable video filtering via libopencv [no]
169   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
170                            and libraw1394 [no]
171   --enable-libdirac        enable Dirac support via libdirac [no]
172   --enable-libfaac         enable FAAC support via libfaac [no]
173   --enable-libfreetype     enable libfreetype [no]
174   --enable-libgsm          enable GSM support via libgsm [no]
175   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
176   --enable-libnut          enable NUT (de)muxing via libnut,
177                            native (de)muxer exists [no]
178   --enable-libopenjpeg     enable JPEG 2000 decoding via OpenJPEG [no]
179   --enable-librtmp         enable RTMP[E] support via librtmp [no]
180   --enable-libschroedinger enable Dirac support via libschroedinger [no]
181   --enable-libspeex        enable Speex decoding via libspeex [no]
182   --enable-libtheora       enable Theora encoding via libtheora [no]
183   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
184   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
185   --enable-libvorbis       enable Vorbis encoding via libvorbis,
186                            native implementation exists [no]
187   --enable-libvpx          enable VP8 support via libvpx [no]
188   --enable-libx264         enable H.264 encoding via x264 [no]
189   --enable-libxavs         enable AVS encoding via xavs [no]
190   --enable-libxvid         enable Xvid encoding via xvidcore,
191                            native MPEG-4/Xvid encoder exists [no]
192   --enable-mlib            enable Sun medialib [no]
193   --enable-zlib            enable zlib [autodetect]
194
195 Advanced options (experts only):
196   --source-path=PATH       path to source code [$source_path]
197   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
198   --enable-cross-compile   assume a cross-compiler is used
199   --sysroot=PATH           root of cross-build tree
200   --sysinclude=PATH        location of cross-build system headers
201   --target-os=OS           compiler targets OS [$target_os]
202   --target-exec=CMD        command to run executables on target
203   --target-path=DIR        path to view of build directory on target
204   --nm=NM                  use nm tool
205   --ar=AR                  use archive tool AR [$ar_default]
206   --as=AS                  use assembler AS [$as_default]
207   --cc=CC                  use C compiler CC [$cc_default]
208   --ld=LD                  use linker LD
209   --host-cc=HOSTCC         use host C compiler HOSTCC
210   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
211   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
212   --host-libs=HLIBS        use libs HLIBS when linking for host
213   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
214   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
215   --extra-libs=ELIBS       add ELIBS [$ELIBS]
216   --extra-version=STRING   version string suffix []
217   --build-suffix=SUFFIX    library name suffix []
218   --arch=ARCH              select architecture [$arch]
219   --cpu=CPU                select the minimum required CPU (affects
220                            instruction selection, may crash on older CPUs)
221   --disable-asm            disable all assembler optimizations
222   --disable-altivec        disable AltiVec optimizations
223   --disable-amd3dnow       disable 3DNow! optimizations
224   --disable-amd3dnowext    disable 3DNow! extended optimizations
225   --disable-mmx            disable MMX optimizations
226   --disable-mmx2           disable MMX2 optimizations
227   --disable-sse            disable SSE optimizations
228   --disable-ssse3          disable SSSE3 optimizations
229   --disable-avx            disable AVX optimizations
230   --disable-armv5te        disable armv5te optimizations
231   --disable-armv6          disable armv6 optimizations
232   --disable-armv6t2        disable armv6t2 optimizations
233   --disable-armvfp         disable ARM VFP optimizations
234   --disable-iwmmxt         disable iwmmxt optimizations
235   --disable-mmi            disable MMI optimizations
236   --disable-neon           disable neon optimizations
237   --disable-vis            disable VIS optimizations
238   --disable-yasm           disable use of yasm assembler
239   --enable-pic             build position-independent code
240   --malloc-prefix=PFX      prefix malloc and related names with PFX
241   --enable-sram            allow use of on-chip SRAM
242   --disable-symver         disable symbol versioning
243
244 Developer options (useful when working on FFmpeg itself):
245   --disable-debug          disable debugging symbols
246   --enable-debug=LEVEL     set the debug level [$debuglevel]
247   --disable-optimizations  disable compiler optimizations
248   --enable-extra-warnings  enable more compiler warnings
249   --disable-stripping      disable stripping of executables and shared libraries
250   --samples=PATH           location of test samples for FATE, if not set use
251                            \$FATE_SAMPLES at make invocation time.
252
253 NOTE: Object files are built at the place where configure is launched.
254 EOF
255   exit 0
256 }
257
258 quotes='""'
259
260 log(){
261     echo "$@" >> $logfile
262 }
263
264 log_file(){
265     log BEGIN $1
266     pr -n -t $1 >> $logfile
267     log END $1
268 }
269
270 echolog(){
271     log "$@"
272     echo "$@"
273 }
274
275 warn(){
276     log "WARNING: $*"
277     WARNINGS="${WARNINGS}WARNING: $*\n"
278 }
279
280 die(){
281     echolog "$@"
282     cat <<EOF
283
284 If you think configure made a mistake, make sure you are using the latest
285 version from Git.  If the latest version fails, report the problem to the
286 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
287 EOF
288     if disabled logging; then
289         cat <<EOF
290 Rerun configure with logging enabled (do not use --disable-logging), and
291 include the log this produces with your report.
292 EOF
293     else
294 cat <<EOF
295 Include the log file "$logfile" produced by configure as this will help
296 solving the problem.
297 EOF
298     fi
299     exit 1
300 }
301
302 # Avoid locale weirdness, besides we really just want to translate ASCII.
303 toupper(){
304     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
305 }
306
307 tolower(){
308     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
309 }
310
311 c_escape(){
312     echo "$*" | sed 's/["\\]/\\\0/g'
313 }
314
315 sh_quote(){
316     v=$(echo "$1" | sed "s/'/'\\\\''/g")
317     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
318     echo "$v"
319 }
320
321 cleanws(){
322     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
323 }
324
325 filter(){
326     pat=$1
327     shift
328     for v; do
329         eval "case $v in $pat) echo $v ;; esac"
330     done
331 }
332
333 filter_out(){
334     pat=$1
335     shift
336     for v; do
337         eval "case $v in $pat) ;; *) echo $v ;; esac"
338     done
339 }
340
341 map(){
342     m=$1
343     shift
344     for v; do eval $m; done
345 }
346
347 set_all(){
348     value=$1
349     shift
350     for var in $*; do
351         eval $var=$value
352     done
353 }
354
355 set_weak(){
356     value=$1
357     shift
358     for var; do
359         eval : \${$var:=$value}
360     done
361 }
362
363 set_safe(){
364     var=$1
365     shift
366     eval $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')='$*'
367 }
368
369 get_safe(){
370     eval echo \$$(echo "$1" | sed 's/[^A-Za-z0-9_]/_/g')
371 }
372
373 pushvar(){
374     for var in $*; do
375         eval level=\${${var}_level:=0}
376         eval ${var}_${level}="\$$var"
377         eval ${var}_level=$(($level+1))
378     done
379 }
380
381 popvar(){
382     for var in $*; do
383         eval level=\${${var}_level:-0}
384         test $level = 0 && continue
385         eval level=$(($level-1))
386         eval $var="\${${var}_${level}}"
387         eval ${var}_level=$level
388         eval unset ${var}_${level}
389     done
390 }
391
392 enable(){
393     set_all yes $*
394 }
395
396 disable(){
397     set_all no $*
398 }
399
400 enable_weak(){
401     set_weak yes $*
402 }
403
404 disable_weak(){
405     set_weak no $*
406 }
407
408 enable_safe(){
409     for var; do
410         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
411     done
412 }
413
414 disable_safe(){
415     for var; do
416         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
417     done
418 }
419
420 do_enable_deep(){
421     for var; do
422         enabled $var && continue
423         eval sel="\$${var}_select"
424         eval sgs="\$${var}_suggest"
425         pushvar var sgs
426         enable_deep $sel
427         popvar sgs
428         enable_deep_weak $sgs
429         popvar var
430     done
431 }
432
433 enable_deep(){
434     do_enable_deep $*
435     enable $*
436 }
437
438 enable_deep_weak(){
439     do_enable_deep $*
440     enable_weak $*
441 }
442
443 enabled(){
444     test "${1#!}" = "$1" && op== || op=!=
445     eval test "x\$${1#!}" $op "xyes"
446 }
447
448 disabled(){
449     test "${1#!}" = "$1" && op== || op=!=
450     eval test "x\$${1#!}" $op "xno"
451 }
452
453 enabled_all(){
454     for opt; do
455         enabled $opt || return 1
456     done
457 }
458
459 disabled_all(){
460     for opt; do
461         disabled $opt || return 1
462     done
463 }
464
465 enabled_any(){
466     for opt; do
467         enabled $opt && return 0
468     done
469 }
470
471 disabled_any(){
472     for opt; do
473         disabled $opt && return 0
474     done
475     return 1
476 }
477
478 set_default(){
479     for opt; do
480         eval : \${$opt:=\$${opt}_default}
481     done
482 }
483
484 is_in(){
485     value=$1
486     shift
487     for var in $*; do
488         [ $var = $value ] && return 0
489     done
490     return 1
491 }
492
493 check_deps(){
494     for cfg; do
495         cfg="${cfg#!}"
496         enabled ${cfg}_checking && die "Circular dependency for $cfg."
497         disabled ${cfg}_checking && continue
498         enable ${cfg}_checking
499
500         eval dep_all="\$${cfg}_deps"
501         eval dep_any="\$${cfg}_deps_any"
502         eval dep_sel="\$${cfg}_select"
503         eval dep_sgs="\$${cfg}_suggest"
504         eval dep_ifa="\$${cfg}_if"
505         eval dep_ifn="\$${cfg}_if_any"
506
507         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
508         check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
509         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
510
511         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
512         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
513         enabled_all  $dep_all || disable $cfg
514         enabled_any  $dep_any || disable $cfg
515         disabled_any $dep_sel && disable $cfg
516
517         if enabled $cfg; then
518             eval dep_extralibs="\$${cfg}_extralibs"
519             test -n "$dep_extralibs" && add_extralibs $dep_extralibs
520             enable_deep $dep_sel
521             enable_deep_weak $dep_sgs
522         fi
523
524         disable ${cfg}_checking
525     done
526 }
527
528 print_config_h(){
529     enabled $1 && v=1 || v=0
530     echo "#define $2 $v"
531 }
532
533 print_config_mak(){
534     enabled $1 && v= || v=!
535     echo "$v$2=yes"
536 }
537
538 print_config_asm(){
539     enabled $1 && echo "%define $2"
540 }
541
542 print_config(){
543     pfx=$1
544     files=$2
545     shift 2
546     for cfg; do
547         ucname="$(toupper $cfg)"
548         for f in $files; do
549             "print_config_${f##*.}" $cfg ${pfx}${ucname} >>$f
550         done
551     done
552 }
553
554 print_enabled(){
555     test "$1" = -n && end=" " && shift || end="\n"
556     suf=$1
557     shift
558     for v; do
559         enabled $v && printf "%s$end" ${v%$suf};
560     done
561 }
562
563 append(){
564     var=$1
565     shift
566     eval "$var=\"\$$var $*\""
567 }
568
569 prepend(){
570     var=$1
571     shift
572     eval "$var=\"$* \$$var\""
573 }
574
575 add_cppflags(){
576     append CPPFLAGS $($filter_cppflags "$@")
577 }
578
579 add_cflags(){
580     append CFLAGS $($filter_cflags "$@")
581 }
582
583 add_asflags(){
584     append ASFLAGS $($filter_asflags "$@")
585 }
586
587 add_ldflags(){
588     append LDFLAGS "$@"
589 }
590
591 add_extralibs(){
592     prepend extralibs "$@"
593 }
594
595 check_cmd(){
596     log "$@"
597     "$@" >> $logfile 2>&1
598 }
599
600 check_cc(){
601     log check_cc "$@"
602     cat > $TMPC
603     log_file $TMPC
604     check_cmd $cc $CPPFLAGS $CFLAGS "$@" -c -o $TMPO $TMPC
605 }
606
607 check_cpp(){
608     log check_cpp "$@"
609     cat > $TMPC
610     log_file $TMPC
611     check_cmd $cc $CPPFLAGS $CFLAGS "$@" -E -o $TMPO $TMPC
612 }
613
614 check_as(){
615     log check_as "$@"
616     cat > $TMPC
617     log_file $TMPC
618     check_cmd $as $CPPFLAGS $ASFLAGS "$@" -c -o $TMPO $TMPC
619 }
620
621 check_asm(){
622     log check_asm "$@"
623     name="$1"
624     code="$2"
625     shift 2
626     disable $name
627     check_as "$@" <<EOF && enable $name
628 void foo(void){ __asm__ volatile($code); }
629 EOF
630 }
631
632 check_yasm(){
633     log check_yasm "$@"
634     echo "$1" > $TMPS
635     log_file $TMPS
636     shift 1
637     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
638 }
639
640 check_ld(){
641     log check_ld "$@"
642     flags=''
643     libs=''
644     for f; do
645         test "${f}" = "${f#-l}" && flags="$flags $f" || libs="$libs $f"
646     done
647     check_cc $($filter_cflags $flags) || return
648     check_cmd $ld $LDFLAGS $flags -o $TMPE $TMPO $libs $extralibs
649 }
650
651 check_cppflags(){
652     log check_cppflags "$@"
653     set -- $($filter_cppflags "$@")
654     check_cc "$@" <<EOF && append CPPFLAGS "$@"
655 int x;
656 EOF
657 }
658
659 check_cflags(){
660     log check_cflags "$@"
661     set -- $($filter_cflags "$@")
662     check_cc "$@" <<EOF && append CFLAGS "$@"
663 int x;
664 EOF
665 }
666
667 test_ldflags(){
668     log test_ldflags "$@"
669     check_ld "$@" <<EOF
670 int main(void){ return 0; }
671 EOF
672 }
673
674 check_ldflags(){
675     log check_ldflags "$@"
676     test_ldflags "$@" && add_ldflags "$@"
677 }
678
679 check_header(){
680     log check_header "$@"
681     header=$1
682     shift
683     disable_safe $header
684     check_cpp "$@" <<EOF && enable_safe $header
685 #include <$header>
686 int x;
687 EOF
688 }
689
690 check_func(){
691     log check_func "$@"
692     func=$1
693     shift
694     disable $func
695     check_ld "$@" <<EOF && enable $func
696 extern int $func();
697 int main(void){ $func(); }
698 EOF
699 }
700
701 check_mathfunc(){
702     log check_mathfunc "$@"
703     func=$1
704     shift
705     disable $func
706     check_ld "$@" <<EOF && enable $func
707 #include <math.h>
708 float foo(float f) { return $func(f); }
709 int main(void){ return 0; }
710 EOF
711 }
712
713 check_func_headers(){
714     log check_func_headers "$@"
715     headers=$1
716     funcs=$2
717     shift 2
718     {
719         for hdr in $headers; do
720             echo "#include <$hdr>"
721         done
722         for func in $funcs; do
723             echo "long check_$func(void) { return (long) $func; }"
724         done
725         echo "int main(void) { return 0; }"
726     } | check_ld "$@" && enable $funcs && enable_safe $headers
727 }
728
729 check_cpp_condition(){
730     log check_cpp_condition "$@"
731     header=$1
732     condition=$2
733     shift 2
734     check_cpp $($filter_cppflags "$@") <<EOF
735 #include <$header>
736 #if !($condition)
737 #error "unsatisfied condition: $condition"
738 #endif
739 EOF
740 }
741
742 check_lib(){
743     log check_lib "$@"
744     header="$1"
745     func="$2"
746     shift 2
747     check_header $header && check_func $func "$@" && add_extralibs "$@"
748 }
749
750 check_lib2(){
751     log check_lib2 "$@"
752     headers="$1"
753     funcs="$2"
754     shift 2
755     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
756 }
757
758 check_pkg_config(){
759     log check_pkg_config "$@"
760     pkg="$1"
761     headers="$2"
762     funcs="$3"
763     shift 3
764     $pkg_config --exists $pkg || return
765     pkg_cflags=$($pkg_config --cflags $pkg)
766     pkg_libs=$($pkg_config --libs $pkg)
767     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
768         set_safe ${pkg}_cflags $pkg_cflags   &&
769         set_safe ${pkg}_libs   $pkg_libs
770 }
771
772 check_exec(){
773     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
774 }
775
776 check_exec_crash(){
777     code=$(cat)
778
779     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
780     # are safe but may not be available everywhere.  Thus we use
781     # raise(SIGTERM) instead.  The check is run in a subshell so we
782     # can redirect the "Terminated" message from the shell.  SIGBUS
783     # is not defined by standard C so it is used conditionally.
784
785     (check_exec "$@") >> $logfile 2>&1 <<EOF
786 #include <signal.h>
787 static void sighandler(int sig){
788     raise(SIGTERM);
789 }
790 int main(void){
791     signal(SIGILL, sighandler);
792     signal(SIGFPE, sighandler);
793     signal(SIGSEGV, sighandler);
794 #ifdef SIGBUS
795     signal(SIGBUS, sighandler);
796 #endif
797     { $code }
798 }
799 EOF
800 }
801
802 check_type(){
803     log check_type "$@"
804     headers=$1
805     type=$2
806     shift 2
807     disable_safe "$type"
808     incs=""
809     for hdr in $headers; do
810         incs="$incs
811 #include <$hdr>"
812     done
813     check_cc "$@" <<EOF && enable_safe "$type"
814 $incs
815 $type v;
816 EOF
817 }
818
819 check_struct(){
820     log check_type "$@"
821     headers=$1
822     struct=$2
823     member=$3
824     shift 3
825     disable_safe "${struct}_${member}"
826     incs=""
827     for hdr in $headers; do
828         incs="$incs
829 #include <$hdr>"
830     done
831     check_cc "$@" <<EOF && enable_safe "${struct}_${member}"
832 $incs
833 const void *p = &(($struct *)0)->$member;
834 EOF
835 }
836
837 require(){
838     name="$1"
839     header="$2"
840     func="$3"
841     shift 3
842     check_lib $header $func "$@" || die "ERROR: $name not found"
843 }
844
845 require2(){
846     name="$1"
847     headers="$2"
848     func="$3"
849     shift 3
850     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
851 }
852
853 require_pkg_config(){
854     pkg="$1"
855     check_pkg_config "$@" || die "ERROR: $pkg not found"
856     add_cflags    $(get_safe ${pkg}_cflags)
857     add_extralibs $(get_safe ${pkg}_libs)
858 }
859
860 check_host_cc(){
861     log check_host_cc "$@"
862     cat > $TMPC
863     log_file $TMPC
864     check_cmd $host_cc $host_cflags "$@" -c -o $TMPO $TMPC
865 }
866
867 check_host_cflags(){
868     log check_host_cflags "$@"
869     check_host_cc "$@" <<EOF && append host_cflags "$@"
870 int x;
871 EOF
872 }
873
874 apply(){
875     file=$1
876     shift
877     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
878 }
879
880 cp_if_changed(){
881     cmp -s "$1" "$2" &&
882         echo "$2 is unchanged" ||
883         cp -f "$1" "$2"
884 }
885
886 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
887 # system-dependent things.
888
889 COMPONENT_LIST="
890     bsfs
891     decoders
892     demuxers
893     encoders
894     filters
895     hwaccels
896     indevs
897     muxers
898     outdevs
899     parsers
900     protocols
901 "
902
903 CONFIG_LIST="
904     $COMPONENT_LIST
905     aandct
906     ac3dsp
907     audio_float
908     avcodec
909     avdevice
910     avfilter
911     avformat
912     avisynth
913     bzlib
914     crystalhd
915     dct
916     doc
917     dwt
918     dxva2
919     fastdiv
920     ffmpeg
921     ffplay
922     ffprobe
923     ffserver
924     fft
925     frei0r
926     golomb
927     gpl
928     gray
929     h264dsp
930     h264pred
931     hardcoded_tables
932     huffman
933     libcelt
934     libdc1394
935     libdirac
936     libfaac
937     libfreetype
938     libgsm
939     libmp3lame
940     libnut
941     libopencore_amrnb
942     libopencore_amrwb
943     libopencv
944     libopenjpeg
945     librtmp
946     libschroedinger
947     libspeex
948     libtheora
949     libvo_aacenc
950     libvo_amrwbenc
951     libvorbis
952     libvpx
953     libx264
954     libxavs
955     libxvid
956     lpc
957     lsp
958     mdct
959     memalign_hack
960     mlib
961     mpegaudio_hp
962     network
963     nonfree
964     pic
965     postproc
966     rdft
967     rtpdec
968     runtime_cpudetect
969     shared
970     sinewin
971     small
972     sram
973     static
974     swscale
975     swscale_alpha
976     vaapi
977     vdpau
978     version3
979     x11grab
980     zlib
981 "
982
983 THREADS_LIST='
984     pthreads
985     w32threads
986 '
987
988 ARCH_LIST='
989     alpha
990     arm
991     avr32
992     avr32_ap
993     avr32_uc
994     bfin
995     ia64
996     m68k
997     mips
998     mips64
999     parisc
1000     ppc
1001     ppc64
1002     s390
1003     sh4
1004     sparc
1005     sparc64
1006     tomi
1007     x86
1008     x86_32
1009     x86_64
1010 '
1011
1012 ARCH_EXT_LIST='
1013     altivec
1014     amd3dnow
1015     amd3dnowext
1016     armv5te
1017     armv6
1018     armv6t2
1019     armvfp
1020     avx
1021     iwmmxt
1022     mmi
1023     mmx
1024     mmx2
1025     neon
1026     ppc4xx
1027     sse
1028     ssse3
1029     vis
1030 '
1031
1032 HAVE_LIST_PUB='
1033     bigendian
1034     fast_unaligned
1035 '
1036
1037 HAVE_LIST="
1038     $ARCH_EXT_LIST
1039     $HAVE_LIST_PUB
1040     $THREADS_LIST
1041     aligned_stack
1042     alsa_asoundlib_h
1043     altivec_h
1044     arpa_inet_h
1045     attribute_may_alias
1046     attribute_packed
1047     bswap
1048     closesocket
1049     cmov
1050     dcbzl
1051     dev_bktr_ioctl_bt848_h
1052     dev_bktr_ioctl_meteor_h
1053     dev_ic_bt8xx_h
1054     dev_video_meteor_ioctl_meteor_h
1055     dev_video_bktr_ioctl_bt848_h
1056     dlfcn_h
1057     dlopen
1058     dos_paths
1059     ebp_available
1060     ebx_available
1061     exp2
1062     exp2f
1063     fast_64bit
1064     fast_clz
1065     fast_cmov
1066     fcntl
1067     fork
1068     getaddrinfo
1069     gethrtime
1070     GetProcessMemoryInfo
1071     GetProcessTimes
1072     getrusage
1073     gnu_as
1074     struct_rusage_ru_maxrss
1075     ibm_asm
1076     inet_aton
1077     inline_asm
1078     isatty
1079     kbhit
1080     ldbrx
1081     libdc1394_1
1082     libdc1394_2
1083     llrint
1084     llrintf
1085     local_aligned_16
1086     local_aligned_8
1087     localtime_r
1088     log2
1089     log2f
1090     loongson
1091     lrint
1092     lrintf
1093     lzo1x_999_compress
1094     machine_ioctl_bt848_h
1095     machine_ioctl_meteor_h
1096     malloc_h
1097     MapViewOfFile
1098     memalign
1099     mkstemp
1100     mmap
1101     pld
1102     posix_memalign
1103     round
1104     roundf
1105     sdl
1106     sdl_video_size
1107     setmode
1108     sndio_h
1109     socklen_t
1110     soundcard_h
1111     poll_h
1112     setrlimit
1113     strerror_r
1114     strtok_r
1115     struct_addrinfo
1116     struct_ipv6_mreq
1117     struct_sockaddr_in6
1118     struct_sockaddr_sa_len
1119     struct_sockaddr_storage
1120     symver
1121     symver_gnu_asm
1122     symver_asm_label
1123     sys_mman_h
1124     sys_resource_h
1125     sys_select_h
1126     sys_soundcard_h
1127     sys_videoio_h
1128     ten_operands
1129     termios_h
1130     threads
1131     truncf
1132     vfp_args
1133     VirtualAlloc
1134     winsock2_h
1135     xform_asm
1136     xmm_clobbers
1137     yasm
1138 "
1139
1140 # options emitted with CONFIG_ prefix but not available on command line
1141 CONFIG_EXTRA="
1142     avutil
1143     gplv3
1144     lgplv3
1145 "
1146
1147 CMDLINE_SELECT="
1148     $ARCH_EXT_LIST
1149     $CONFIG_LIST
1150     $THREADS_LIST
1151     asm
1152     cross_compile
1153     debug
1154     extra_warnings
1155     logging
1156     optimizations
1157     stripping
1158     symver
1159     yasm
1160 "
1161
1162 PATHS_LIST='
1163     bindir
1164     datadir
1165     incdir
1166     libdir
1167     mandir
1168     prefix
1169     shlibdir
1170 '
1171
1172 CMDLINE_SET="
1173     $PATHS_LIST
1174     ar
1175     arch
1176     as
1177     build_suffix
1178     cc
1179     cpu
1180     cross_prefix
1181     dep_cc
1182     extra_version
1183     host_cc
1184     host_cflags
1185     host_ldflags
1186     host_libs
1187     host_os
1188     ld
1189     logfile
1190     malloc_prefix
1191     nm
1192     pkg_config
1193     samples
1194     source_path
1195     strip
1196     sysinclude
1197     sysroot
1198     target_exec
1199     target_os
1200     target_path
1201 "
1202
1203 CMDLINE_APPEND="
1204     extra_cflags
1205 "
1206
1207 # code dependency declarations
1208
1209 # architecture extensions
1210
1211 armv5te_deps="arm"
1212 armv6_deps="arm"
1213 armv6t2_deps="arm"
1214 armvfp_deps="arm"
1215 iwmmxt_deps="arm"
1216 neon_deps="arm"
1217
1218 mmi_deps="mips"
1219
1220 altivec_deps="ppc"
1221 ppc4xx_deps="ppc"
1222
1223 vis_deps="sparc"
1224
1225 x86_64_suggest="cmov fast_cmov"
1226 amd3dnow_deps="mmx"
1227 amd3dnowext_deps="amd3dnow"
1228 mmx_deps="x86"
1229 mmx2_deps="mmx"
1230 sse_deps="mmx"
1231 ssse3_deps="sse"
1232 avx_deps="ssse3"
1233
1234 aligned_stack_if_any="ppc x86"
1235 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1236 fast_clz_if_any="alpha armv5te avr32 mips ppc x86"
1237 fast_unaligned_if_any="armv6 ppc x86"
1238
1239 need_memalign="altivec neon sse"
1240 inline_asm_deps="!tms470"
1241
1242 symver_if_any="symver_asm_label symver_gnu_asm"
1243
1244 # subsystems
1245 dct_select="rdft"
1246 mdct_select="fft"
1247 rdft_select="fft"
1248
1249 # decoders / encoders / hardware accelerators
1250 aac_decoder_select="mdct rdft sinewin"
1251 aac_encoder_select="mdct sinewin"
1252 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1253 ac3_decoder_select="mdct ac3dsp ac3_parser"
1254 ac3_encoder_select="mdct ac3dsp"
1255 ac3_fixed_encoder_select="ac3dsp"
1256 alac_encoder_select="lpc"
1257 amrnb_decoder_select="lsp"
1258 amrwb_decoder_select="lsp"
1259 atrac1_decoder_select="mdct sinewin"
1260 atrac3_decoder_select="mdct"
1261 binkaudio_dct_decoder_select="mdct rdft dct"
1262 binkaudio_rdft_decoder_select="mdct rdft"
1263 cavs_decoder_select="golomb"
1264 cook_decoder_select="mdct sinewin"
1265 cscd_decoder_suggest="zlib"
1266 dca_decoder_select="mdct"
1267 dnxhd_encoder_select="aandct"
1268 dxa_decoder_select="zlib"
1269 eac3_decoder_select="ac3_decoder"
1270 eamad_decoder_select="aandct"
1271 eatgq_decoder_select="aandct"
1272 eatqi_decoder_select="aandct"
1273 ffv1_decoder_select="golomb"
1274 flac_decoder_select="golomb"
1275 flac_encoder_select="golomb lpc"
1276 flashsv_decoder_select="zlib"
1277 flashsv_encoder_select="zlib"
1278 flv_decoder_select="h263_decoder"
1279 flv_encoder_select="h263_encoder"
1280 fraps_decoder_select="huffman"
1281 h261_encoder_select="aandct"
1282 h263_decoder_select="h263_parser"
1283 h263_encoder_select="aandct"
1284 h263_vaapi_hwaccel_select="vaapi h263_decoder"
1285 h263i_decoder_select="h263_decoder"
1286 h263p_encoder_select="h263_encoder"
1287 h264_decoder_select="golomb h264dsp h264pred"
1288 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
1289 h264_dxva2_hwaccel_deps="dxva2api_h"
1290 h264_dxva2_hwaccel_select="dxva2 h264_decoder"
1291 h264_vaapi_hwaccel_select="vaapi"
1292 h264_vdpau_decoder_select="vdpau h264_decoder"
1293 imc_decoder_select="fft mdct"
1294 jpegls_decoder_select="golomb"
1295 jpegls_encoder_select="golomb"
1296 ljpeg_encoder_select="aandct"
1297 loco_decoder_select="golomb"
1298 mjpeg_encoder_select="aandct"
1299 mlp_decoder_select="mlp_parser"
1300 mp1float_decoder_select="dct"
1301 mp2float_decoder_select="dct"
1302 mp3adufloat_decoder_select="dct"
1303 mp3float_decoder_select="dct"
1304 mp3on4float_decoder_select="dct"
1305 mpeg1video_encoder_select="aandct"
1306 mpeg2video_encoder_select="aandct"
1307 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1308 mpeg4_encoder_select="h263_encoder"
1309 mpeg_vdpau_decoder_select="vdpau mpegvideo_decoder"
1310 mpeg1_vdpau_decoder_select="vdpau mpeg1video_decoder"
1311 mpeg1_vdpau_hwaccel_select="vdpau mpeg1video_decoder"
1312 mpeg2_crystalhd_decoder_select="crystalhd"
1313 mpeg2_dxva2_hwaccel_deps="dxva2api_h"
1314 mpeg2_dxva2_hwaccel_select="dxva2 mpeg2video_decoder"
1315 mpeg2_vdpau_hwaccel_select="vdpau mpeg2video_decoder"
1316 mpeg2_vaapi_hwaccel_select="vaapi mpeg2video_decoder"
1317 mpeg4_crystalhd_decoder_select="crystalhd"
1318 mpeg4_vaapi_hwaccel_select="vaapi mpeg4_decoder"
1319 mpeg4_vdpau_decoder_select="vdpau mpeg4_decoder"
1320 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1321 mpeg_xvmc_decoder_select="mpegvideo_decoder"
1322 msmpeg4_crystalhd_decoder_select="crystalhd"
1323 msmpeg4v1_decoder_select="h263_decoder"
1324 msmpeg4v1_encoder_select="h263_encoder"
1325 msmpeg4v2_decoder_select="h263_decoder"
1326 msmpeg4v2_encoder_select="h263_encoder"
1327 msmpeg4v3_decoder_select="h263_decoder"
1328 msmpeg4v3_encoder_select="h263_encoder"
1329 nellymoser_decoder_select="mdct sinewin"
1330 nellymoser_encoder_select="mdct sinewin"
1331 png_decoder_select="zlib"
1332 png_encoder_select="zlib"
1333 qcelp_decoder_select="lsp"
1334 qdm2_decoder_select="mdct rdft"
1335 ra_144_encoder_select="lpc"
1336 rv10_decoder_select="h263_decoder"
1337 rv10_encoder_select="h263_encoder"
1338 rv20_decoder_select="h263_decoder"
1339 rv20_encoder_select="h263_encoder"
1340 rv30_decoder_select="golomb h264pred"
1341 rv40_decoder_select="golomb h264pred"
1342 shorten_decoder_select="golomb"
1343 sipr_decoder_select="lsp"
1344 snow_decoder_select="dwt"
1345 snow_encoder_select="aandct dwt"
1346 sonic_decoder_select="golomb"
1347 sonic_encoder_select="golomb"
1348 sonic_ls_encoder_select="golomb"
1349 svq1_encoder_select="aandct"
1350 svq3_decoder_select="golomb h264dsp h264pred"
1351 svq3_decoder_suggest="zlib"
1352 theora_decoder_select="vp3_decoder"
1353 tiff_decoder_suggest="zlib"
1354 tiff_encoder_suggest="zlib"
1355 truehd_decoder_select="mlp_decoder"
1356 tscc_decoder_select="zlib"
1357 twinvq_decoder_select="mdct lsp sinewin"
1358 vc1_decoder_select="h263_decoder"
1359 vc1_crystalhd_decoder_select="crystalhd"
1360 vc1_dxva2_hwaccel_deps="dxva2api_h DXVA_PictureParameters_wDecodedPictureIndex"
1361 vc1_dxva2_hwaccel_select="dxva2 vc1_decoder"
1362 vc1_vaapi_hwaccel_select="vaapi vc1_decoder"
1363 vc1_vdpau_decoder_select="vdpau vc1_decoder"
1364 vorbis_decoder_select="mdct"
1365 vorbis_encoder_select="mdct"
1366 vp6_decoder_select="huffman"
1367 vp6a_decoder_select="vp6_decoder"
1368 vp6f_decoder_select="vp6_decoder"
1369 vp8_decoder_select="h264pred"
1370 wmapro_decoder_select="mdct sinewin"
1371 wmav1_decoder_select="mdct sinewin"
1372 wmav1_encoder_select="mdct sinewin"
1373 wmav2_decoder_select="mdct sinewin"
1374 wmav2_encoder_select="mdct sinewin"
1375 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1376 wmv1_decoder_select="h263_decoder"
1377 wmv1_encoder_select="h263_encoder"
1378 wmv2_decoder_select="h263_decoder"
1379 wmv2_encoder_select="h263_encoder"
1380 wmv3_decoder_select="vc1_decoder"
1381 wmv3_crystalhd_decoder_select="crystalhd"
1382 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1383 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1384 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
1385 zlib_decoder_select="zlib"
1386 zlib_encoder_select="zlib"
1387 zmbv_decoder_select="zlib"
1388 zmbv_encoder_select="zlib"
1389
1390 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
1391 vaapi_deps="va_va_h"
1392 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1393
1394 # parsers
1395 h264_parser_select="golomb h264dsp h264pred"
1396
1397 # external libraries
1398 libcelt_decoder_deps="libcelt"
1399 libdirac_decoder_deps="libdirac !libschroedinger"
1400 libdirac_encoder_deps="libdirac"
1401 libfaac_encoder_deps="libfaac"
1402 libgsm_decoder_deps="libgsm"
1403 libgsm_encoder_deps="libgsm"
1404 libgsm_ms_decoder_deps="libgsm"
1405 libgsm_ms_encoder_deps="libgsm"
1406 libmp3lame_encoder_deps="libmp3lame"
1407 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1408 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1409 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1410 libopenjpeg_decoder_deps="libopenjpeg"
1411 libschroedinger_decoder_deps="libschroedinger"
1412 libschroedinger_encoder_deps="libschroedinger"
1413 libspeex_decoder_deps="libspeex"
1414 libtheora_encoder_deps="libtheora"
1415 libvo_aacenc_encoder_deps="libvo_aacenc"
1416 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1417 libvorbis_encoder_deps="libvorbis"
1418 libvpx_decoder_deps="libvpx"
1419 libvpx_encoder_deps="libvpx"
1420 libx264_encoder_deps="libx264"
1421 libxavs_encoder_deps="libxavs"
1422 libxvid_encoder_deps="libxvid"
1423
1424 # demuxers / muxers
1425 ac3_demuxer_select="ac3_parser"
1426 asf_stream_muxer_select="asf_muxer"
1427 avisynth_demuxer_deps="avisynth"
1428 dirac_demuxer_select="dirac_parser"
1429 eac3_demuxer_select="ac3_parser"
1430 flac_demuxer_select="flac_parser"
1431 ipod_muxer_select="mov_muxer"
1432 libnut_demuxer_deps="libnut"
1433 libnut_muxer_deps="libnut"
1434 matroska_audio_muxer_select="matroska_muxer"
1435 matroska_demuxer_suggest="zlib bzlib"
1436 mov_demuxer_suggest="zlib"
1437 mp3_demuxer_select="mpegaudio_parser"
1438 mp4_muxer_select="mov_muxer"
1439 mpegtsraw_demuxer_select="mpegts_demuxer"
1440 mxf_d10_muxer_select="mxf_muxer"
1441 ogg_demuxer_select="golomb"
1442 psp_muxer_select="mov_muxer"
1443 rtp_demuxer_select="sdp_demuxer"
1444 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1445 rtsp_demuxer_select="http_protocol rtpdec"
1446 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol"
1447 sap_demuxer_select="sdp_demuxer"
1448 sap_muxer_select="rtp_muxer rtp_protocol"
1449 sdp_demuxer_select="rtpdec"
1450 spdif_muxer_select="aac_parser"
1451 tg2_muxer_select="mov_muxer"
1452 tgp_muxer_select="mov_muxer"
1453 w64_demuxer_deps="wav_demuxer"
1454
1455 # indevs / outdevs
1456 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1457 alsa_outdev_deps="alsa_asoundlib_h"
1458 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1459 dv1394_indev_deps="dv1394 dv_demuxer"
1460 fbdev_indev_deps="linux_fb_h"
1461 jack_indev_deps="jack_jack_h"
1462 libdc1394_indev_deps="libdc1394"
1463 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1464 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1465 sndio_indev_deps="sndio_h"
1466 sndio_outdev_deps="sndio_h"
1467 v4l_indev_deps="linux_videodev_h"
1468 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1469 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1470 vfwcap_indev_extralibs="-lavicap32"
1471 x11_grab_device_indev_deps="x11grab XShmCreateImage"
1472 x11_grab_device_indev_extralibs="-lX11 -lXext -lXfixes"
1473
1474 # protocols
1475 gopher_protocol_deps="network"
1476 http_protocol_deps="network"
1477 http_protocol_select="tcp_protocol"
1478 mmsh_protocol_select="http_protocol"
1479 mmst_protocol_deps="network"
1480 rtmp_protocol_select="tcp_protocol"
1481 rtp_protocol_select="udp_protocol"
1482 tcp_protocol_deps="network"
1483 udp_protocol_deps="network"
1484
1485 # filters
1486 blackframe_filter_deps="gpl"
1487 cropdetect_filter_deps="gpl"
1488 drawtext_filter_deps="libfreetype"
1489 frei0r_filter_deps="frei0r dlopen strtok_r"
1490 frei0r_src_filter_deps="frei0r dlopen strtok_r"
1491 hqdn3d_filter_deps="gpl"
1492 mp_filter_deps="gpl"
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
1501 # programs
1502 ffmpeg_deps="avcodec avformat swscale"
1503 ffmpeg_select="buffer_filter"
1504 ffplay_deps="avcodec avformat swscale sdl"
1505 ffplay_select="rdft"
1506 ffprobe_deps="avcodec avformat"
1507 ffserver_deps="avformat ffm_muxer fork rtp_protocol rtsp_demuxer"
1508 ffserver_extralibs='$ldl'
1509
1510 doc_deps="texi2html"
1511
1512 # tests
1513
1514 test_deps(){
1515     suf1=$1
1516     suf2=$2
1517     shift 2
1518     for v; do
1519         dep=${v%=*}
1520         tests=${v#*=}
1521         for name in ${tests}; do
1522             eval ${name}_test_deps="'${dep}$suf1 ${dep}$suf2'"
1523         done
1524     done
1525 }
1526
1527 set_ne_test_deps(){
1528     eval ${1}_be_test_deps="bigendian"
1529     eval ${1}_le_test_deps="!bigendian"
1530 }
1531
1532 test_deps _encoder _decoder                                             \
1533     adpcm_g726=g726                                                     \
1534     adpcm_ima_qt                                                        \
1535     adpcm_ima_wav                                                       \
1536     adpcm_ms                                                            \
1537     adpcm_swf                                                           \
1538     adpcm_yamaha=adpcm_yam                                              \
1539     alac                                                                \
1540     asv1                                                                \
1541     asv2                                                                \
1542     bmp                                                                 \
1543     dnxhd="dnxhd_1080i dnxhd_720p dnxhd_720p_rd"                        \
1544     dvvideo="dv dv50"                                                   \
1545     ffv1                                                                \
1546     flac                                                                \
1547     flashsv                                                             \
1548     flv                                                                 \
1549     gif                                                                 \
1550     h261                                                                \
1551     h263="h263 h263p"                                                   \
1552     huffyuv                                                             \
1553     jpegls                                                              \
1554     mjpeg="jpg mjpeg ljpeg"                                             \
1555     mp2                                                                 \
1556     mpeg1video="mpeg mpeg1b"                                            \
1557     mpeg2video="mpeg2 mpeg2thread"                                      \
1558     mpeg4="mpeg4 mpeg4adv mpeg4nr mpeg4thread error rc"                 \
1559     msmpeg4v3=msmpeg4                                                   \
1560     msmpeg4v2                                                           \
1561     pbm=pbmpipe                                                         \
1562     pcx                                                                 \
1563     pgm="pgm pgmpipe"                                                   \
1564     png                                                                 \
1565     ppm="ppm ppmpipe"                                                   \
1566     rawvideo="rgb yuv"                                                  \
1567     roq                                                                 \
1568     rv10                                                                \
1569     rv20                                                                \
1570     sgi                                                                 \
1571     snow="snow snowll"                                                  \
1572     svq1                                                                \
1573     targa=tga                                                           \
1574     tiff                                                                \
1575     wmav1                                                               \
1576     wmav2                                                               \
1577     wmv1                                                                \
1578     wmv2                                                                \
1579
1580 test_deps _muxer _demuxer                                               \
1581     aiff                                                                \
1582     pcm_alaw=alaw                                                       \
1583     asf                                                                 \
1584     au                                                                  \
1585     avi                                                                 \
1586     dv=dv_fmt                                                           \
1587     ffm                                                                 \
1588     flv=flv_fmt                                                         \
1589     gxf                                                                 \
1590     matroska=mkv                                                        \
1591     mmf                                                                 \
1592     mov                                                                 \
1593     pcm_mulaw=mulaw                                                     \
1594     mxf                                                                 \
1595     nut                                                                 \
1596     ogg                                                                 \
1597     rawvideo=pixfmt                                                     \
1598     rm                                                                  \
1599     swf                                                                 \
1600     mpegts=ts                                                           \
1601     voc                                                                 \
1602     wav                                                                 \
1603     yuv4mpegpipe=yuv4mpeg                                               \
1604
1605 ac3_fixed_test_deps="ac3_fixed_encoder ac3_decoder rm_muxer rm_demuxer"
1606 mpg_test_deps="mpeg1system_muxer mpegps_demuxer"
1607
1608 set_ne_test_deps pixdesc
1609 set_ne_test_deps pixfmts_copy
1610 set_ne_test_deps pixfmts_crop
1611 set_ne_test_deps pixfmts_hflip
1612 set_ne_test_deps pixfmts_null
1613 set_ne_test_deps pixfmts_pad
1614 set_ne_test_deps pixfmts_scale
1615 set_ne_test_deps pixfmts_vflip
1616
1617 # default parameters
1618
1619 logfile="config.log"
1620
1621 # installation paths
1622 prefix_default="/usr/local"
1623 bindir_default='${prefix}/bin'
1624 datadir_default='${prefix}/share/ffmpeg'
1625 incdir_default='${prefix}/include'
1626 libdir_default='${prefix}/lib'
1627 mandir_default='${prefix}/share/man'
1628 shlibdir_default="$libdir_default"
1629
1630 # toolchain
1631 ar_default="ar"
1632 cc_default="gcc"
1633 cc_version=\"unknown\"
1634 host_cc_default="gcc"
1635 ln_s="ln -sf"
1636 nm_default="nm"
1637 objformat="elf"
1638 pkg_config_default=pkg-config
1639 ranlib="ranlib"
1640 strip_default="strip"
1641 yasmexe="yasm"
1642 nogas=":"
1643
1644 nm_opts='-g'
1645
1646 # machine
1647 arch_default=$(uname -m)
1648 cpu="generic"
1649
1650 # OS
1651 target_os_default=$(tolower $(uname -s))
1652 host_os=$target_os_default
1653
1654 # configurable options
1655 enable avcodec
1656 enable avdevice
1657 enable avfilter
1658 enable avformat
1659 enable avutil
1660 enable asm
1661 enable debug
1662 enable doc
1663 enable fastdiv
1664 enable ffmpeg
1665 enable ffplay
1666 enable ffprobe
1667 enable ffserver
1668 enable mpegaudio_hp
1669 enable network
1670 enable optimizations
1671 enable protocols
1672 enable static
1673 enable stripping
1674 enable swscale
1675 enable swscale_alpha
1676
1677 # build settings
1678 SHFLAGS='-shared -Wl,-soname,$$(@F)'
1679 FFSERVERLDFLAGS=-Wl,-E
1680 LIBPREF="lib"
1681 LIBSUF=".a"
1682 FULLNAME='$(NAME)$(BUILDSUF)'
1683 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
1684 SLIBPREF="lib"
1685 SLIBSUF=".so"
1686 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
1687 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
1688 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
1689 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
1690
1691 CC_O='-o $@'
1692
1693 host_cflags='-D_ISOC99_SOURCE -D_POSIX_C_SOURCE=200112 -O3 -g -Wall'
1694 host_libs='-lm'
1695
1696 target_path='$(CURDIR)'
1697
1698 # since the object filename is not given with the -MM flag, the compiler
1699 # is only able to print the basename, and we must add the path ourselves
1700 DEPEND_CMD='$(DEPCC) $(DEPFLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
1701 DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -MM'
1702
1703 # find source path
1704 source_path="$(dirname "$0")"
1705 enable source_path_used
1706 if test -f configure; then
1707     source_path="$(pwd)"
1708     disable source_path_used
1709 else
1710     source_path="$(cd "$source_path"; pwd)"
1711     echo "$source_path" | grep -q '[[:blank:]]' &&
1712         die "Out of tree builds are impossible with whitespace in source path."
1713     test -e "$source_path/config.h" &&
1714         die "Out of tree builds are impossible with config.h in source dir."
1715 fi
1716
1717 for v in "$@"; do
1718     r=${v#*=}
1719     l=${v%"$r"}
1720     r=$(sh_quote "$r")
1721     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
1722 done
1723
1724 find_things(){
1725     thing=$1
1726     pattern=$2
1727     file=$source_path/$3
1728     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
1729 }
1730
1731 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
1732 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
1733 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
1734 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
1735 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
1736 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
1737 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
1738 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
1739 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
1740 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
1741 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
1742
1743 find_tests(){
1744     map "echo ${2}\${v}_test" $(ls "$source_path"/tests/ref/$1 | grep -v '[^-a-z0-9_]')
1745 }
1746
1747 ACODEC_TESTS=$(find_tests acodec)
1748 VCODEC_TESTS=$(find_tests vsynth1)
1749 LAVF_TESTS=$(find_tests lavf)
1750 LAVFI_TESTS=$(find_tests lavfi)
1751 SEEK_TESTS=$(find_tests seek seek_)
1752
1753 pcm_test_deps=$(map 'echo ${v%_*}_decoder $v' $(filter pcm_* $ENCODER_LIST))
1754
1755 for n in $COMPONENT_LIST; do
1756     v=$(toupper ${n%s})_LIST
1757     eval enable \$$v
1758     eval ${n}_if_any="\$$v"
1759 done
1760
1761 enable $ARCH_EXT_LIST $ACODEC_TESTS $VCODEC_TESTS $LAVF_TESTS $LAVFI_TESTS $SEEK_TESTS
1762
1763 die_unknown(){
1764     echo "Unknown option \"$1\"."
1765     echo "See $0 --help for available options."
1766     exit 1
1767 }
1768
1769 show_list() {
1770     suffix=_$1
1771     shift
1772     echo $* | sed s/$suffix//g | tr ' ' '\n' | sort | pr -3 -t
1773     exit 0
1774 }
1775
1776 for opt do
1777     optval="${opt#*=}"
1778     case "$opt" in
1779     --extra-ldflags=*) add_ldflags $optval
1780     ;;
1781     --extra-libs=*) add_extralibs $optval
1782     ;;
1783     --disable-devices) disable $INDEV_LIST $OUTDEV_LIST
1784     ;;
1785     --enable-debug=*) debuglevel="$optval"
1786     ;;
1787     --disable-everything)
1788     map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
1789     ;;
1790     --enable-*=*|--disable-*=*)
1791     eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
1792     is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
1793     eval list=\$$(toupper $thing)_LIST
1794     name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
1795     $action $(filter "$name" $list)
1796     ;;
1797     --enable-?*|--disable-?*)
1798     eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
1799     if is_in $option $COMPONENT_LIST; then
1800         test $action = disable && action=unset
1801         eval $action \$$(toupper ${option%s})_LIST
1802     elif is_in $option $CMDLINE_SELECT; then
1803         $action $option
1804     else
1805         die_unknown $opt
1806     fi
1807     ;;
1808     --list-*)
1809         NAME="${opt#--list-}"
1810         is_in $NAME $COMPONENT_LIST || die_unknown $opt
1811         NAME=${NAME%s}
1812         eval show_list $NAME \$$(toupper $NAME)_LIST
1813     ;;
1814     --help|-h) show_help
1815     ;;
1816     *)
1817     optname="${opt%%=*}"
1818     optname="${optname#--}"
1819     optname=$(echo "$optname" | sed 's/-/_/g')
1820     if is_in $optname $CMDLINE_SET; then
1821         eval $optname='$optval'
1822     elif is_in $optname $CMDLINE_APPEND; then
1823         append $optname "$optval"
1824     else
1825          die_unknown $opt
1826     fi
1827     ;;
1828     esac
1829 done
1830
1831 disabled logging && logfile=/dev/null
1832
1833 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
1834 set >> $logfile
1835
1836 test -n "$cross_prefix" && enable cross_compile
1837
1838 if enabled cross_compile; then
1839     test -n "$arch" && test -n "$target_os" ||
1840         die "Must specify target arch and OS when cross-compiling"
1841 fi
1842
1843 set_default arch target_os
1844
1845 ar_default="${cross_prefix}${ar_default}"
1846 cc_default="${cross_prefix}${cc_default}"
1847 nm_default="${cross_prefix}${nm_default}"
1848 pkg_config_default="${cross_prefix}${pkg_config_default}"
1849 ranlib="${cross_prefix}${ranlib}"
1850 strip_default="${cross_prefix}${strip_default}"
1851
1852 sysinclude_default="${sysroot}/usr/include"
1853
1854 set_default cc nm pkg_config strip sysinclude
1855 enabled cross_compile || host_cc_default=$cc
1856 set_default host_cc
1857
1858 exesuf() {
1859     case $1 in
1860         mingw32*|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
1861     esac
1862 }
1863
1864 EXESUF=$(exesuf $target_os)
1865 HOSTEXESUF=$(exesuf $host_os)
1866
1867 # set temporary file name
1868 : ${TMPDIR:=$TEMPDIR}
1869 : ${TMPDIR:=$TMP}
1870 : ${TMPDIR:=/tmp}
1871
1872 if ! check_cmd mktemp -u XXXXXX; then
1873     # simple replacement for missing mktemp
1874     # NOT SAFE FOR GENERAL USE
1875     mktemp(){
1876         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
1877     }
1878 fi
1879
1880 tmpfile(){
1881     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
1882         (set -C; exec > $tmp) 2>/dev/null ||
1883         die "Unable to create temporary file in $TMPDIR."
1884     append TMPFILES $tmp
1885     eval $1=$tmp
1886 }
1887
1888 trap 'rm -f -- $TMPFILES' EXIT
1889
1890 tmpfile TMPC  .c
1891 tmpfile TMPE  $EXESUF
1892 tmpfile TMPH  .h
1893 tmpfile TMPO  .o
1894 tmpfile TMPS  .S
1895 tmpfile TMPV  .ver
1896 tmpfile TMPSH .sh
1897 tmpfile TMPASM .asm
1898
1899 unset -f mktemp
1900
1901 chmod +x $TMPE
1902
1903 # make sure we can execute files in $TMPDIR
1904 cat > $TMPSH 2>> $logfile <<EOF
1905 #! /bin/sh
1906 EOF
1907 chmod +x $TMPSH >> $logfile 2>&1
1908 if ! $TMPSH >> $logfile 2>&1; then
1909     cat <<EOF
1910 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
1911 variable to another directory and make sure that it is not mounted noexec.
1912 EOF
1913     die "Sanity test failed."
1914 fi
1915
1916 filter_cflags=echo
1917 filter_cppflags=echo
1918 filter_asflags=echo
1919
1920 if   $cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
1921     cc_type=llvm_gcc
1922     cc_version=__VERSION__
1923     gcc_extra_ver=$(expr "$($cc --version | head -n1)" : '.*\((.*)\)')
1924     cc_ident="llvm-gcc $($cc -dumpversion) $gcc_extra_ver"
1925     CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1926     AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1927     speed_cflags='-O3'
1928     size_cflags='-Os'
1929 elif $cc -v 2>&1 | grep -qi ^gcc; then
1930     cc_type=gcc
1931     cc_version=__VERSION__
1932     gcc_version=$($cc --version | head -n1)
1933     gcc_basever=$($cc -dumpversion)
1934     gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
1935     gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
1936     cc_ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
1937     if ! $cc -dumpversion | grep -q '^2\.'; then
1938         CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1939         AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1940     fi
1941     speed_cflags='-O3'
1942     size_cflags='-Os'
1943 elif $cc --version 2>/dev/null | grep -q Intel; then
1944     cc_type=icc
1945     cc_version="AV_STRINGIFY(__INTEL_COMPILER)"
1946     cc_ident=$($cc --version | head -n1)
1947     icc_version=$($cc -dumpversion)
1948     CC_DEPFLAGS='-MMD'
1949     AS_DEPFLAGS='-MMD'
1950     speed_cflags='-O3'
1951     size_cflags='-Os'
1952     noopt_cflags='-O1'
1953 elif $cc -v 2>&1 | grep -q xlc; then
1954     cc_type=xlc
1955     cc_version="AV_STRINGIFY(__IBMC__)"
1956     cc_ident=$($cc -qversion 2>/dev/null | head -n1)
1957     speed_cflags='-O5'
1958     size_cflags='-O5 -qcompact'
1959 elif $cc -V 2>/dev/null | grep -q Compaq; then
1960     cc_type=ccc
1961     cc_version="AV_STRINGIFY(__DECC_VER)"
1962     cc_ident=$($cc -V | head -n1 | cut -d' ' -f1-3)
1963     DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -M'
1964     debuglevel=3
1965     add_ldflags -Wl,-z,now # calls to libots crash without this
1966     speed_cflags='-fast'
1967     size_cflags='-O1'
1968 elif $cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
1969     test -d "$sysroot" || die "No valid sysroot specified."
1970     cc_type=armcc
1971     cc_version="AV_STRINGIFY(__ARMCC_VERSION)"
1972     cc_ident=$($cc --vsn | head -n1)
1973     armcc_conf="$PWD/armcc.conf"
1974     $cc --arm_linux_configure                 \
1975         --arm_linux_config_file="$armcc_conf" \
1976         --configure_sysroot="$sysroot"        \
1977         --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
1978         die "Error creating armcc configuration file."
1979     $cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
1980     cc="$cc --arm_linux_config_file=$armcc_conf --translate_gcc"
1981     as_default="${cross_prefix}gcc"
1982     CC_DEPFLAGS='-MMD'
1983     AS_DEPFLAGS='-MMD'
1984     speed_cflags='-O3'
1985     size_cflags='-Os'
1986     filter_asflags="filter_out -W${armcc_opt}*"
1987 elif $cc -version 2>/dev/null | grep -q TMS470; then
1988     cc_type=tms470
1989     cc_version="AV_STRINGIFY(__TI_COMPILER_VERSION__)"
1990     cc_ident=$($cc -version | head -n1 | tr -s ' ')
1991     cc="$cc --gcc --abi=eabi -eo=.o -mc -me"
1992     CC_O='-fr=$(@D)'
1993     as_default="${cross_prefix}gcc"
1994     ld_default="${cross_prefix}gcc"
1995     TMPO=$(basename $TMPC .c).o
1996     append TMPFILES $TMPO
1997     add_cflags -D__gnuc_va_list=va_list -D__USER_LABEL_PREFIX__=
1998     CC_DEPFLAGS='-ppa -ppd=$(@:.o=.d)'
1999     AS_DEPFLAGS='-MMD'
2000     speed_cflags='-O3 -mf=5'
2001     size_cflags='-O3 -mf=2'
2002     filter_cflags=tms470_flags
2003     tms470_flags(){
2004         for flag; do
2005             case $flag in
2006                 -march=*|-mcpu=*)
2007                     case "${flag#*=}" in
2008                         armv7-a|cortex-a*)      echo -mv=7a8 ;;
2009                         armv7-r|cortex-r*)      echo -mv=7r4 ;;
2010                         armv7-m|cortex-m*)      echo -mv=7m3 ;;
2011                         armv6*|arm11*)          echo -mv=6   ;;
2012                         armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2013                                                 echo -mv=5e  ;;
2014                         armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2015                     esac
2016                     ;;
2017                 -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2018                 -mfpu=vfp)      echo --float_support=vfpv2        ;;
2019                 -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2020                 -msoft-float)   echo --float_support=vfplib       ;;
2021                 -O[0-3]|-mf=*)  echo $flag                        ;;
2022                 -g)             echo -g -mn                       ;;
2023                 -pds=*)         echo $flag                        ;;
2024             esac
2025         done
2026     }
2027 elif $cc -v 2>&1 | grep -q clang; then
2028     cc_type=clang
2029     $cc -dM -E $TMPC | grep -q __clang_version__ &&
2030         cc_version=__clang_version__ || cc_version=__VERSION__
2031     cc_ident=$($cc --version | head -n1)
2032     CC_DEPFLAGS='-MMD'
2033     AS_DEPFLAGS='-MMD'
2034     speed_cflags='-O3'
2035     size_cflags='-Os'
2036 elif $cc -V 2>&1 | grep -q Sun; then
2037     cc_type=suncc
2038     cc_version="AV_STRINGIFY(__SUNPRO_C)"
2039     cc_ident=$($cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2040     DEPEND_CMD='$(DEPCC) $(DEPFLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2041     DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -xM1'
2042     speed_cflags='-O5'
2043     size_cflags='-O5 -xspace'
2044     filter_cflags=suncc_flags
2045     suncc_flags(){
2046         for flag; do
2047             case $flag in
2048                 -march=*|-mcpu=*)
2049                     case "${flag#*=}" in
2050                         native)                   echo -xtarget=native       ;;
2051                         v9|niagara)               echo -xarch=sparc          ;;
2052                         ultrasparc)               echo -xarch=sparcvis       ;;
2053                         ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2054                         i586|pentium)             echo -xchip=pentium        ;;
2055                         i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2056                         pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2057                         pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2058                         pentium4*)          echo -xtarget=pentium4           ;;
2059                         prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2060                         *-sse3)             echo -xarch=sse3                 ;;
2061                         core2)              echo -xarch=ssse3 -xchip=core2   ;;
2062                         amdfam10|barcelona)       echo -xarch=sse4_1         ;;
2063                         athlon-4|athlon-[mx]p)    echo -xarch=ssea           ;;
2064                         k8|opteron|athlon64|athlon-fx)
2065                                                   echo -xarch=sse2a          ;;
2066                         athlon*)                  echo -xarch=pentium_proa   ;;
2067                     esac
2068                     ;;
2069                 -std=c99)             echo -xc99              ;;
2070                 -fomit-frame-pointer) echo -xregs=frameptr    ;;
2071                 -fPIC)                echo -KPIC -xcode=pic32 ;;
2072                 -W*,*)                echo $flag              ;;
2073                 -f*-*|-W*)                                    ;;
2074                 *)                    echo $flag              ;;
2075             esac
2076         done
2077     }
2078 elif $cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2079     cc_type=pathscale
2080     cc_version=__PATHSCALE__
2081     cc_ident=$($cc -v 2>&1 | head -n1 | tr -d :)
2082     CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2083     AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2084     speed_cflags='-O2'
2085     size_cflags='-Os'
2086 elif $cc -v 2>&1 | grep -q Open64; then
2087     cc_type=open64
2088     cc_version=__OPEN64__
2089     cc_ident=$($cc -v 2>&1 | head -n1 | tr -d :)
2090     CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2091     AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2092     speed_cflags='-O2'
2093     size_cflags='-Os'
2094 fi
2095
2096 test -n "$cc_type" && enable $cc_type ||
2097     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2098
2099 : ${as_default:=$cc}
2100 : ${dep_cc_default:=$cc}
2101 : ${ld_default:=$cc}
2102 set_default ar as dep_cc ld
2103
2104 test -n "$CC_DEPFLAGS" || CCDEP=$DEPEND_CMD
2105 test -n "$AS_DEPFLAGS" || ASDEP=$DEPEND_CMD
2106
2107 add_cflags $extra_cflags
2108 add_asflags $extra_cflags
2109
2110 if test -n "$sysroot"; then
2111     case "$cc_type" in
2112         gcc|llvm_gcc|clang)
2113             add_cppflags --sysroot="$sysroot"
2114             add_ldflags --sysroot="$sysroot"
2115         ;;
2116         tms470)
2117             add_cppflags -I"$sysinclude"
2118             add_ldflags  --sysroot="$sysroot"
2119         ;;
2120     esac
2121 fi
2122
2123 if test "$cpu" = host; then
2124     enabled cross_compile && die "--cpu=host makes no sense when cross-compiling."
2125
2126     case "$cc_type" in
2127         gcc|llvm_gcc)
2128             check_native(){
2129                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2130                 sed -n "/$1=/{
2131                             s/.*$1=\\([^ ]*\\).*/\\1/
2132                             p
2133                             q
2134                         }" $TMPE
2135             }
2136             cpu=$(check_native -march || check_native -mcpu)
2137         ;;
2138     esac
2139
2140     test "${cpu:-host}" = host && die "--cpu=host not supported with compiler $cc"
2141 fi
2142
2143 # Deal with common $arch aliases
2144 case "$arch" in
2145     arm*)
2146         arch="arm"
2147     ;;
2148     mips|mipsel|IP*)
2149         arch="mips"
2150     ;;
2151     mips64*)
2152         arch="mips"
2153         subarch="mips64"
2154     ;;
2155     parisc|hppa)
2156         arch="parisc"
2157     ;;
2158     parisc64|hppa64)
2159         arch="parisc"
2160         subarch="parisc64"
2161     ;;
2162     "Power Macintosh"|ppc|powerpc)
2163         arch="ppc"
2164     ;;
2165     ppc64|powerpc64)
2166         arch="ppc"
2167         subarch="ppc64"
2168     ;;
2169     s390|s390x)
2170         arch="s390"
2171     ;;
2172     sh4|sh)
2173         arch="sh4"
2174     ;;
2175     sun4u|sparc64)
2176         arch="sparc"
2177         subarch="sparc64"
2178     ;;
2179     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
2180         arch="x86"
2181     ;;
2182 esac
2183
2184 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2185 enable $arch
2186
2187 # Add processor-specific flags
2188 if test "$cpu" = generic; then
2189     : do nothing
2190 elif enabled ppc; then
2191
2192     case $(tolower $cpu) in
2193         601|ppc601|powerpc601)
2194             cpuflags="-mcpu=601"
2195             disable altivec
2196         ;;
2197         603*|ppc603*|powerpc603*)
2198             cpuflags="-mcpu=603"
2199             disable altivec
2200         ;;
2201         604*|ppc604*|powerpc604*)
2202             cpuflags="-mcpu=604"
2203             disable altivec
2204         ;;
2205         g3|75*|ppc75*|powerpc75*)
2206             cpuflags="-mcpu=750 -mpowerpc-gfxopt"
2207             disable altivec
2208         ;;
2209         g4|745*|ppc745*|powerpc745*)
2210             cpuflags="-mcpu=7450 -mpowerpc-gfxopt"
2211         ;;
2212         74*|ppc74*|powerpc74*)
2213             cpuflags="-mcpu=7400 -mpowerpc-gfxopt"
2214         ;;
2215         g5|970|ppc970|powerpc970|power4*)
2216             cpuflags="-mcpu=970 -mpowerpc-gfxopt -mpowerpc64"
2217         ;;
2218         cell)
2219             cpuflags="-mcpu=cell"
2220             enable ldbrx
2221         ;;
2222         e500v2)
2223             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
2224             disable altivec
2225         ;;
2226         e500)
2227             cpuflags="-mcpu=8540 -mhard-float"
2228             disable altivec
2229         ;;
2230     esac
2231
2232 elif enabled x86; then
2233
2234     case $cpu in
2235         i[345]86|pentium)
2236             cpuflags="-march=$cpu"
2237             disable mmx
2238         ;;
2239         # targets that do NOT support conditional mov (cmov)
2240         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
2241             cpuflags="-march=$cpu"
2242             disable cmov
2243         ;;
2244         # targets that do support conditional mov (cmov)
2245         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64|k8|opteron|athlon-fx|core2|amdfam10|barcelona|atom)
2246             cpuflags="-march=$cpu"
2247             enable cmov
2248             enable fast_cmov
2249         ;;
2250         # targets that do support conditional mov but on which it's slow
2251         pentium4|pentium4m|prescott|nocona)
2252             cpuflags="-march=$cpu"
2253             enable cmov
2254             disable fast_cmov
2255         ;;
2256     esac
2257
2258 elif enabled sparc; then
2259
2260     case $cpu in
2261         niagara)
2262             cpuflags="-mcpu=$cpu"
2263             disable vis
2264         ;;
2265         sparc64)
2266             cpuflags="-mcpu=v9"
2267         ;;
2268     esac
2269
2270 elif enabled arm; then
2271
2272     case $cpu in
2273         armv*)
2274             cpuflags="-march=$cpu"
2275             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
2276         ;;
2277         *)
2278             cpuflags="-mcpu=$cpu"
2279             case $cpu in
2280                 cortex-a*)                               subarch=armv7a  ;;
2281                 cortex-r*)                               subarch=armv7r  ;;
2282                 cortex-m*)                               subarch=armv7m  ;;
2283                 arm11*)                                  subarch=armv6   ;;
2284                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
2285                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
2286             esac
2287         ;;
2288     esac
2289
2290 elif enabled alpha; then
2291
2292     enabled ccc && cpuflags="-arch $cpu" || cpuflags="-mcpu=$cpu"
2293
2294 elif enabled bfin; then
2295
2296     cpuflags="-mcpu=$cpu"
2297
2298 elif enabled mips; then
2299
2300     cpuflags="-march=$cpu"
2301
2302 elif enabled avr32; then
2303
2304     case $cpu in
2305         ap7[02]0[0-2])
2306             subarch="avr32_ap"
2307             cpuflags="-mpart=$cpu"
2308         ;;
2309         ap)
2310             subarch="avr32_ap"
2311             cpuflags="-march=$cpu"
2312         ;;
2313         uc3[ab]*)
2314             subarch="avr32_uc"
2315             cpuflags="-mcpu=$cpu"
2316         ;;
2317         uc)
2318             subarch="avr32_uc"
2319             cpuflags="-march=$cpu"
2320         ;;
2321     esac
2322
2323 fi
2324
2325 add_cflags $cpuflags
2326 add_asflags $cpuflags
2327
2328 # compiler sanity check
2329 check_exec <<EOF
2330 int main(void){ return 0; }
2331 EOF
2332 if test "$?" != 0; then
2333     echo "$cc is unable to create an executable file."
2334     if test -z "$cross_prefix" && ! enabled cross_compile ; then
2335         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
2336         echo "Only do this if you know what cross compiling means."
2337     fi
2338     die "C compiler test failed."
2339 fi
2340
2341 add_cppflags -D_ISOC99_SOURCE -D_POSIX_C_SOURCE=200112
2342 check_cflags -std=c99
2343 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
2344 #include <stdlib.h>
2345 EOF
2346 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
2347 #include <stdlib.h>
2348 EOF
2349
2350 check_host_cflags -std=c99
2351
2352 case "$arch" in
2353     alpha|ia64|mips|parisc|sparc)
2354         spic=$shared
2355     ;;
2356     x86)
2357         subarch="x86_32"
2358         check_cc <<EOF && subarch="x86_64"
2359         int test[(int)sizeof(char*) - 7];
2360 EOF
2361         if test "$subarch" = "x86_64"; then
2362             spic=$shared
2363         fi
2364     ;;
2365 esac
2366
2367 enable $subarch
2368 enabled spic && enable pic
2369
2370 # OS specific
2371 case $target_os in
2372     haiku)
2373         prefix_default="/boot/common"
2374         network_extralibs="-lnetwork"
2375         host_libs=
2376         ;;
2377     sunos)
2378         FFSERVERLDFLAGS=""
2379         SHFLAGS='-shared -Wl,-h,$$(@F)'
2380         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
2381         network_extralibs="-lsocket -lnsl"
2382         add_cppflags -D__EXTENSIONS__
2383         nm_opts='-P -g'
2384         ;;
2385     netbsd)
2386         disable symver
2387         oss_indev_extralibs="-lossaudio"
2388         oss_outdev_extralibs="-lossaudio"
2389         add_cppflags -D_XOPEN_SOURCE=600
2390         ;;
2391     openbsd)
2392         enable malloc_aligned
2393         # On OpenBSD 4.5. the compiler does not use PIC unless
2394         # explicitly using -fPIC. FFmpeg builds fine without PIC,
2395         # however the generated executable will not do anything
2396         # (simply quits with exit-code 1, no crash, no output).
2397         # Thus explicitly enable PIC here.
2398         enable pic
2399         disable symver
2400         SHFLAGS='-shared'
2401         oss_indev_extralibs="-lossaudio"
2402         oss_outdev_extralibs="-lossaudio"
2403         ;;
2404     dragonfly)
2405         enable malloc_aligned
2406         disable symver
2407         ;;
2408     freebsd)
2409         enable malloc_aligned
2410         ;;
2411     bsd/os)
2412         add_extralibs -lpoll -lgnugetopt
2413         strip="strip -d"
2414         ;;
2415     darwin)
2416         enable malloc_aligned
2417         gas="gas-preprocessor.pl $cc"
2418         enabled ppc && add_asflags -force_cpusubtype_ALL
2419         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
2420         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
2421         strip="${strip} -x"
2422         add_ldflags -Wl,-dynamic,-search_paths_first
2423         SLIBSUF=".dylib"
2424         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
2425         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
2426         FFSERVERLDFLAGS=-Wl,-bind_at_load
2427         objformat="macho"
2428         enabled x86_64 && objformat="macho64"
2429         enabled_any pic shared ||
2430             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
2431         ;;
2432     mingw32*)
2433         if test $target_os = "mingw32ce"; then
2434             disable network
2435         else
2436             target_os=mingw32
2437         fi
2438         LIBTARGET=i386
2439         if enabled x86_64; then
2440             enable malloc_aligned
2441             LIBTARGET=x64
2442         elif enabled arm; then
2443             LIBTARGET=arm-wince
2444         fi
2445         shlibdir_default="$bindir_default"
2446         SLIBPREF=""
2447         SLIBSUF=".dll"
2448         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
2449         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
2450         SLIB_EXTRA_CMD='-lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.lib)'
2451         SLIB_INSTALL_EXTRA_CMD='-install -m 644 $(SUBDIR)$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.lib) "$(SHLIBDIR)/$(SLIBNAME:$(SLIBSUF)=.lib)"; \
2452             install -m 644 $(SUBDIR)$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.lib) "$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.lib)"; \
2453             install -d "$(LIBDIR)"; \
2454             install -m 644 $(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) "$(LIBDIR)/lib$(SLIBNAME:$(SLIBSUF)=.dll.a)"'
2455         SLIB_UNINSTALL_EXTRA_CMD='rm -f "$(SHLIBDIR)/$(SLIBNAME:$(SLIBSUF)=.lib)"'
2456         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'
2457         objformat="win32"
2458         enable dos_paths
2459         check_cflags -fno-common
2460         check_cpp_condition _mingw.h "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) \
2461                                       || (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
2462                 die "ERROR: MinGW runtime version must be >= 3.15."
2463         add_cppflags -U__STRICT_ANSI__
2464         ;;
2465     cygwin*)
2466         target_os=cygwin
2467         shlibdir_default="$bindir_default"
2468         SLIBPREF="cyg"
2469         SLIBSUF=".dll"
2470         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
2471         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
2472         SHFLAGS='-shared -Wl,--enable-auto-image-base'
2473         objformat="win32"
2474         enable dos_paths
2475         check_cflags -fno-common
2476         ;;
2477     *-dos|freedos|opendos)
2478         network_extralibs="-lsocket"
2479         objformat="coff"
2480         enable dos_paths
2481         ;;
2482     linux)
2483         enable dv1394
2484         ;;
2485     irix*)
2486         target_os=irix
2487         ranlib="echo ignoring ranlib"
2488         ;;
2489     os/2*)
2490         strip="lxlite -CS"
2491         ln_s="cp -f"
2492         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
2493         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
2494         FFSERVERLDFLAGS=""
2495         LIBSUF="_s.a"
2496         SLIBPREF=""
2497         SLIBSUF=".dll"
2498         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
2499         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
2500         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
2501           echo PROTMODE >> $(SUBDIR)$(NAME).def; \
2502           echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
2503           echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
2504           echo EXPORTS >> $(SUBDIR)$(NAME).def; \
2505           emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
2506         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
2507           emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
2508         SLIB_INSTALL_EXTRA_CMD='install -m 644 $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib "$(LIBDIR)"'
2509         SLIB_UNINSTALL_EXTRA_CMD='rm -f "$(LIBDIR)"/$(LIBPREF)$(NAME)_dll.a "$(LIBDIR)"/$(LIBPREF)$(NAME)_dll.lib'
2510         enable dos_paths
2511         ;;
2512     gnu/kfreebsd)
2513         ;;
2514     gnu)
2515         ;;
2516     qnx)
2517         add_cppflags -D_QNX_SOURCE
2518         network_extralibs="-lsocket"
2519         ;;
2520     symbian)
2521         SLIBSUF=".dll"
2522         enable dos_paths
2523         add_cflags --include=$sysinclude/gcce/gcce.h
2524         ;;
2525     none)
2526         ;;
2527     *)
2528         die "Unknown OS '$target_os'."
2529         ;;
2530 esac
2531
2532 echo "config:$arch:$subarch:$cpu:$target_os:$cc_ident:$FFMPEG_CONFIGURATION" >config.fate
2533
2534 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable pic
2535
2536 set_default $PATHS_LIST
2537
2538 # we need to build at least one lib type
2539 if ! enabled_any static shared; then
2540     cat <<EOF
2541 At least one library type must be built.
2542 Specify --enable-static to build the static libraries or --enable-shared to
2543 build the shared libraries as well. To only build the shared libraries specify
2544 --disable-static in addition to --enable-shared.
2545 EOF
2546     exit 1;
2547 fi
2548
2549 disabled static && LIBNAME=""
2550
2551 die_license_disabled() {
2552     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
2553 }
2554
2555 die_license_disabled gpl libx264
2556 die_license_disabled gpl libxavs
2557 die_license_disabled gpl libxvid
2558 die_license_disabled gpl postproc
2559 die_license_disabled gpl x11grab
2560
2561 die_license_disabled nonfree libfaac
2562
2563 die_license_disabled version3 libopencore_amrnb
2564 die_license_disabled version3 libopencore_amrwb
2565 die_license_disabled version3 libvo_aacenc
2566 die_license_disabled version3 libvo_amrwbenc
2567
2568 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2569
2570 disabled optimizations || check_cflags -fomit-frame-pointer
2571
2572 enable_pic() {
2573     enable pic
2574     add_cppflags -DPIC
2575     add_cflags   -fPIC
2576     add_asflags  -fPIC
2577 }
2578
2579 enabled pic && enable_pic
2580
2581 check_cc <<EOF || die "Symbol mangling check failed."
2582 int ff_extern;
2583 EOF
2584 sym=$($nm $nm_opts $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
2585 extern_prefix=${sym%%ff_extern*}
2586
2587 check_cc <<EOF && enable inline_asm
2588 void foo(void) { __asm__ volatile ("" ::); }
2589 EOF
2590
2591 _restrict=
2592 for restrict_keyword in restrict __restrict__ __restrict; do
2593     check_cc <<EOF && _restrict=$restrict_keyword && break
2594 void foo(char * $restrict_keyword p);
2595 EOF
2596 done
2597
2598 check_cc <<EOF && enable attribute_packed
2599 struct { int x; } __attribute__((packed)) x;
2600 EOF
2601
2602 check_cc <<EOF && enable attribute_may_alias
2603 union { int x; } __attribute__((may_alias)) x;
2604 EOF
2605
2606 check_cc <<EOF || die "endian test failed"
2607 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
2608 EOF
2609 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
2610
2611 if enabled alpha; then
2612
2613     check_cflags -mieee
2614
2615 elif enabled arm; then
2616
2617     check_cflags -marm
2618     nogas=die
2619
2620     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
2621         enable vfp_args
2622     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
2623         case "${cross_prefix:-$cc}" in
2624             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
2625             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
2626 __asm__ (".eabi_attribute 28, 1");
2627 int main(void) { return 0; }
2628 EOF
2629         esac
2630         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
2631     fi
2632
2633     # We have to check if pld is a nop and disable it.
2634     check_asm pld '"pld [r0]"'
2635
2636     enabled armv5te && check_asm armv5te '"qadd r0, r0, r0"'
2637     enabled armv6   && check_asm armv6   '"sadd16 r0, r0, r0"'
2638     enabled armv6t2 && check_asm armv6t2 '"movt r0, #0"'
2639     enabled armvfp  && check_asm armvfp  '"fadds s0, s0, s0"'
2640     enabled iwmmxt  && check_asm iwmmxt  '"wunpckelub wr6, wr4"'
2641     enabled neon    && check_asm neon    '"vadd.i16 q0, q0, q0"'
2642
2643     enabled_all armv6t2 shared !pic && enable_pic
2644
2645 elif enabled mips; then
2646
2647     check_asm loongson '"dmult.g $1, $2, $3"'
2648     enabled mmi     && check_asm mmi     '"lq $2, 0($2)"'
2649
2650 elif enabled ppc; then
2651
2652     enable local_aligned_8 local_aligned_16
2653
2654     check_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
2655     check_asm ibm_asm   '"add 0, 0, 0"'
2656     check_asm ppc4xx    '"maclhw r10, r11, r12"'
2657     check_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
2658
2659     # AltiVec flags: The FSF version of GCC differs from the Apple version
2660     if enabled altivec; then
2661         nogas=warn
2662         check_cflags -maltivec -mabi=altivec &&
2663         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
2664         check_cflags -faltivec
2665
2666         # check if our compiler supports Motorola AltiVec C API
2667         check_cc <<EOF || disable altivec
2668 $inc_altivec_h
2669 int main(void) {
2670     vector signed int v1, v2, v3;
2671     v1 = vec_add(v2,v3);
2672     return 0;
2673 }
2674 EOF
2675
2676         # check if our compiler supports braces for vector declarations
2677         check_cc <<EOF || die "You need a compiler that supports {} in AltiVec vector declarations."
2678 $inc_altivec_h
2679 int main (void) { (vector int) {1}; return 0; }
2680 EOF
2681     fi
2682
2683 elif enabled sparc; then
2684
2685     enabled vis && check_asm vis '"pdist %f0, %f0, %f0"' -mcpu=ultrasparc &&
2686         add_cflags -mcpu=ultrasparc -mtune=ultrasparc
2687
2688 elif enabled x86; then
2689
2690     enable local_aligned_8 local_aligned_16
2691
2692     # check whether EBP is available on x86
2693     # As 'i' is stored on the stack, this program will crash
2694     # if the base pointer is used to access it because the
2695     # base pointer is cleared in the inline assembly code.
2696     check_exec_crash <<EOF && enable ebp_available
2697     volatile int i=0;
2698     __asm__ volatile (
2699         "xorl %%ebp, %%ebp"
2700     ::: "%ebp");
2701     return i;
2702 EOF
2703
2704     # check whether EBX is available on x86
2705     check_asm ebx_available '""::"b"(0)' &&
2706         check_asm ebx_available '"":::"%ebx"'
2707
2708     # check whether xmm clobbers are supported
2709     check_asm xmm_clobbers '"":::"%xmm0"'
2710
2711     # check whether more than 10 operands are supported
2712     check_cc <<EOF && enable ten_operands
2713 int main(void) {
2714     int x=0;
2715     __asm__ volatile(
2716         ""
2717         :"+&rm"(x), "+&rm"(x), "+&rm"(x), "+&rm"(x), "+&rm"(x), "+&rm"(x)
2718     );
2719     return 0;
2720 }
2721 EOF
2722
2723     # check whether binutils is new enough to compile SSSE3/MMX2
2724     enabled ssse3 && check_asm ssse3 '"pabsw %xmm0, %xmm0"'
2725     enabled mmx2  && check_asm mmx2  '"pmaxub %mm0, %mm1"'
2726
2727     check_asm bswap '"bswap %%eax" ::: "%eax"'
2728
2729     if ! disabled_any asm mmx yasm; then
2730         if check_cmd $yasmexe --version; then
2731             enabled x86_64 && yasm_extra="-m amd64"
2732             yasm_debug="-g dwarf2"
2733         elif check_cmd nasm -v; then
2734             yasmexe=nasm
2735             yasm_debug="-g -F dwarf"
2736             enabled x86_64 && test "$objformat" = elf && objformat=elf64
2737         fi
2738
2739         YASMFLAGS="-f $objformat $yasm_extra"
2740         enabled pic               && append YASMFLAGS "-DPIC"
2741         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
2742         case "$objformat" in
2743             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
2744         esac
2745
2746         check_yasm "pextrd [eax], xmm0, 1" && enable yasm ||
2747             die "yasm not found, use --disable-yasm for a crippled build"
2748         check_yasm "vpaddw xmm0, xmm0, xmm0" || disable avx
2749     fi
2750
2751     case "$cpu" in
2752         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
2753             disable fast_clz
2754         ;;
2755     esac
2756
2757 fi
2758
2759 if enabled asm; then
2760     as=${gas:=$as}
2761     check_asm gnu_as '".macro m n\n\\n:.int 0\n.endm\nm x"' ||
2762         $nogas "GNU assembler not found, install gas-preprocessor"
2763 fi
2764
2765 check_ldflags -Wl,--as-needed
2766
2767 if check_func dlopen; then
2768     ldl=
2769 elif check_func dlopen -ldl; then
2770     ldl=-ldl
2771 fi
2772
2773 if enabled network; then
2774     check_type "sys/types.h sys/socket.h" socklen_t
2775     check_type netdb.h "struct addrinfo"
2776     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
2777     check_type netinet/in.h "struct sockaddr_in6"
2778     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
2779     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
2780     # Prefer arpa/inet.h over winsock2
2781     if check_header arpa/inet.h ; then
2782         check_func closesocket
2783     elif check_header winsock2.h ; then
2784         check_func_headers winsock2.h closesocket -lws2 && \
2785             network_extralibs="-lws2" || \
2786         { check_func_headers winsock2.h closesocket -lws2_32 && \
2787             network_extralibs="-lws2_32"; }
2788         check_type ws2tcpip.h socklen_t
2789         check_type ws2tcpip.h "struct addrinfo"
2790         check_type ws2tcpip.h "struct ipv6_mreq"
2791         check_type ws2tcpip.h "struct sockaddr_in6"
2792         check_type ws2tcpip.h "struct sockaddr_storage"
2793         check_struct winsock2.h "struct sockaddr" sa_len
2794     else
2795         disable network
2796     fi
2797 fi
2798
2799 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
2800 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
2801
2802 check_func  fcntl
2803 check_func  fork
2804 check_func  getaddrinfo $network_extralibs
2805 check_func  gethrtime
2806 check_func  getrusage
2807 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
2808 check_func  inet_aton $network_extralibs
2809 check_func  isatty
2810 check_func  localtime_r
2811 check_func  ${malloc_prefix}memalign            && enable memalign
2812 check_func  mkstemp
2813 check_func  mmap
2814 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
2815 check_func  setrlimit
2816 check_func  strerror_r
2817 check_func  strtok_r
2818 check_func_headers conio.h kbhit
2819 check_func_headers io.h setmode
2820 check_func_headers lzo/lzo1x.h lzo1x_999_compress
2821 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
2822 check_func_headers windows.h GetProcessTimes
2823 check_func_headers windows.h MapViewOfFile
2824 check_func_headers windows.h VirtualAlloc
2825
2826 check_header dlfcn.h
2827 check_header dxva2api.h
2828 check_header libcrystalhd/libcrystalhd_if.h
2829 check_header malloc.h
2830 check_header poll.h
2831 check_header sys/mman.h
2832 check_header sys/resource.h
2833 check_header sys/select.h
2834 check_header termios.h
2835 check_header vdpau/vdpau.h
2836 check_header vdpau/vdpau_x11.h
2837 check_header X11/extensions/XvMClib.h
2838
2839 check_struct dxva2api.h DXVA_PictureParameters wDecodedPictureIndex
2840
2841 if ! enabled_any memalign memalign_hack posix_memalign malloc_aligned &&
2842      enabled_any $need_memalign ; then
2843     die "Error, no aligned memory allocator but SSE enabled, disable it or use --enable-memalign-hack."
2844 fi
2845
2846 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
2847 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
2848
2849 # check for some common methods of building with pthread support
2850 # do this before the optional library checks as some of them require pthreads
2851 if ! disabled pthreads && ! enabled w32threads; then
2852     enable pthreads
2853     if check_func pthread_create; then
2854         :
2855     elif check_func pthread_create -pthread; then
2856         add_cflags -pthread
2857         add_extralibs -pthread
2858     elif check_func pthread_create -pthreads; then
2859         add_cflags -pthreads
2860         add_extralibs -pthreads
2861     elif check_func pthread_create -lpthreadGC2; then
2862         add_extralibs -lpthreadGC2
2863     elif ! check_lib pthread.h pthread_create -lpthread; then
2864         disable pthreads
2865     fi
2866 fi
2867
2868 for thread in $THREADS_LIST; do
2869     if enabled $thread; then
2870         test -n "$thread_type" &&
2871             die "ERROR: Only one thread type must be selected." ||
2872             thread_type="$thread"
2873     fi
2874 done
2875
2876 check_lib math.h sin -lm
2877 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
2878 enabled vaapi && require vaapi va/va.h vaInitialize -lva
2879
2880 check_mathfunc exp2
2881 check_mathfunc exp2f
2882 check_mathfunc llrint
2883 check_mathfunc llrintf
2884 check_mathfunc log2
2885 check_mathfunc log2f
2886 check_mathfunc lrint
2887 check_mathfunc lrintf
2888 check_mathfunc round
2889 check_mathfunc roundf
2890 check_mathfunc truncf
2891
2892 # these are off by default, so fail if requested and not available
2893 enabled avisynth   && require2 vfw32 "windows.h vfw.h" AVIFileInit -lavifil32
2894 enabled libcelt    && require libcelt celt/celt.h celt_decode -lcelt0
2895 enabled frei0r     && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
2896 enabled libdirac   && require_pkg_config dirac                          \
2897     "libdirac_decoder/dirac_parser.h libdirac_encoder/dirac_encoder.h"  \
2898     "dirac_decoder_init dirac_encoder_init"
2899 enabled libfaac    && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
2900 enabled libfreetype && add_cflags $(pkg-config --cflags freetype2) && require libfreetype ft2build.h FT_Init_FreeType -lfreetype
2901 enabled libgsm     && require  libgsm gsm/gsm.h gsm_create -lgsm
2902 enabled libmp3lame && require  "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
2903 enabled libnut     && require  libnut libnut.h nut_demuxer_init -lnut
2904 enabled libopencore_amrnb  && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
2905 enabled libopencore_amrwb  && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
2906 enabled libopencv  && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
2907 enabled libopenjpeg && require libopenjpeg openjpeg.h opj_version -lopenjpeg
2908 enabled librtmp    && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
2909 enabled libschroedinger && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
2910 enabled libspeex   && require  libspeex speex/speex.h speex_decoder_init -lspeex
2911 enabled libtheora  && require  libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
2912 enabled libvo_aacenc && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
2913 enabled libvo_amrwbenc && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
2914 enabled libvorbis  && require  libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
2915 enabled libvpx     && {
2916     enabled libvpx_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
2917                                 die "ERROR: libvpx decoder version must be >=0.9.1"; }
2918     enabled libvpx_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
2919                                 die "ERROR: libvpx encoder version must be >=0.9.6"; } }
2920 enabled libx264    && require  libx264 x264.h x264_encoder_encode -lx264 &&
2921                       { check_cpp_condition x264.h "X264_BUILD >= 99" ||
2922                         die "ERROR: libx264 version must be >= 0.99."; }
2923 enabled libxavs    && require  libxavs xavs.h xavs_encoder_encode -lxavs
2924 enabled libxvid    && require  libxvid xvid.h xvid_global -lxvidcore
2925 enabled mlib       && require  mediaLib mlib_types.h mlib_VectorSub_S16_U8_Mod -lmlib
2926
2927 # libdc1394 check
2928 if enabled libdc1394; then
2929     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
2930         enable libdc1394_2; } ||
2931     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
2932         enable libdc1394_1; } ||
2933     die "ERROR: No version of libdc1394 found "
2934 fi
2935
2936 if check_pkg_config sdl SDL_version.h SDL_Linked_Version; then
2937     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
2938     enable sdl &&
2939     check_struct SDL.h SDL_VideoInfo current_w $sdl_cflags && enable sdl_video_size
2940 fi
2941
2942 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
2943
2944 check_header linux/fb.h
2945 check_header linux/videodev.h
2946 check_header linux/videodev2.h
2947 check_header sys/videoio.h
2948
2949 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
2950 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
2951 # w32api 3.12 had it defined wrong
2952 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
2953
2954 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
2955 { check_header dev/bktr/ioctl_meteor.h &&
2956   check_header dev/bktr/ioctl_bt848.h; } ||
2957 { check_header machine/ioctl_meteor.h &&
2958   check_header machine/ioctl_bt848.h; } ||
2959 { check_header dev/video/meteor/ioctl_meteor.h &&
2960   check_header dev/video/bktr/ioctl_bt848.h; } ||
2961 check_header dev/ic/bt8xx.h
2962
2963 check_header sndio.h
2964 check_header sys/soundcard.h
2965 check_header soundcard.h
2966
2967 enabled_any alsa_indev alsa_outdev && check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
2968
2969 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack
2970
2971 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
2972
2973 enabled x11grab                         &&
2974 check_header X11/Xlib.h                 &&
2975 check_header X11/extensions/XShm.h      &&
2976 check_header X11/extensions/Xfixes.h    &&
2977 check_func XOpenDisplay -lX11           &&
2978 check_func XShmCreateImage -lX11 -lXext &&
2979 check_func XFixesGetCursorImage -lX11 -lXext -lXfixes
2980
2981 if ! disabled vaapi; then
2982     check_lib va/va.h vaInitialize -lva && {
2983         check_cpp_condition va/va_version.h "VA_CHECK_VERSION(0,32,0)" ||
2984         warn "Please upgrade to VA-API >= 0.32 if you would like full VA-API support.";
2985     } || disable vaapi
2986 fi
2987
2988 if ! disabled vdpau && enabled vdpau_vdpau_h; then
2989 check_cpp_condition \
2990     vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
2991     { echolog "Please upgrade to libvdpau >= 0.2 if you would like vdpau support." &&
2992       disable vdpau; }
2993 fi
2994
2995 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
2996
2997 # add some useful compiler flags if supported
2998 check_cflags -Wdeclaration-after-statement
2999 check_cflags -Wall
3000 check_cflags -Wno-parentheses
3001 check_cflags -Wno-switch
3002 check_cflags -Wdisabled-optimization
3003 check_cflags -Wpointer-arith
3004 check_cflags -Wredundant-decls
3005 check_cflags -Wno-pointer-sign
3006 check_cflags -Wcast-qual
3007 check_cflags -Wwrite-strings
3008 check_cflags -Wtype-limits
3009 check_cflags -Wundef
3010 check_cflags -Wmissing-prototypes
3011 enabled extra_warnings && check_cflags -Winline
3012
3013 # add some linker flags
3014 check_ldflags -Wl,--warn-common
3015 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'
3016 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
3017
3018 echo "X{};" > $TMPV
3019 if test_ldflags -Wl,--version-script,$TMPV; then
3020     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
3021     check_cc <<EOF && enable symver_asm_label
3022 void ff_foo(void) __asm__ ("av_foo@VERSION");
3023 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
3024 EOF
3025     check_cc <<EOF && enable symver_gnu_asm
3026 __asm__(".symver ff_foo,av_foo@VERSION");
3027 void ff_foo(void) {}
3028 EOF
3029 fi
3030
3031 if enabled small; then
3032     add_cflags $size_cflags
3033     optimizations="small"
3034 elif enabled optimizations; then
3035     add_cflags $speed_cflags
3036 else
3037     add_cflags $noopt_cflags
3038 fi
3039 check_cflags -fno-math-errno
3040 check_cflags -fno-signed-zeros
3041
3042 if enabled icc; then
3043     # Just warnings, no remarks
3044     check_cflags -w1
3045     # -wd: Disable following warnings
3046     # 144, 167, 556: -Wno-pointer-sign
3047     # 1292: attribute "foo" ignored
3048     # 10006: ignoring unknown option -fno-signed-zeros
3049     # 10148: ignoring unknown option -Wno-parentheses
3050     # 10156: ignoring option '-W'; no argument required
3051     check_cflags -wd144,167,556,1292,10006,10148,10156
3052     # 11030: Warning unknown option --as-needed
3053     # 10156: ignoring option '-export'; no argument required
3054     check_ldflags -wd10156,11030
3055     # Allow to compile with optimizations
3056     check_ldflags -march=$cpu
3057     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
3058     enable ebp_available
3059     if enabled x86_32; then
3060         test ${icc_version%%.*} -ge 11 && \
3061             check_cflags -falign-stack=maintain-16-byte || \
3062             disable aligned_stack
3063     fi
3064 elif enabled ccc; then
3065     # disable some annoying warnings
3066     add_cflags -msg_disable cvtu32to64
3067     add_cflags -msg_disable embedcomment
3068     add_cflags -msg_disable needconstext
3069     add_cflags -msg_disable nomainieee
3070     add_cflags -msg_disable ptrmismatch1
3071     add_cflags -msg_disable unreachcode
3072 elif enabled gcc; then
3073     check_cflags -fno-tree-vectorize
3074     check_cflags -Werror=implicit-function-declaration
3075     check_cflags -Werror=missing-prototypes
3076 elif enabled llvm_gcc; then
3077     check_cflags -mllvm -stack-alignment=16
3078 elif enabled clang; then
3079     check_cflags -mllvm -stack-alignment=16
3080     check_cflags -Qunused-arguments
3081 elif enabled armcc; then
3082     # 2523: use of inline assembler is deprecated
3083     add_cflags -W${armcc_opt},--diag_suppress=2523
3084     add_cflags -W${armcc_opt},--diag_suppress=1207
3085     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
3086     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
3087 elif enabled tms470; then
3088     add_cflags -pds=824 -pds=837
3089 elif enabled pathscale; then
3090     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
3091 fi
3092
3093 enabled_any $THREADS_LIST      && enable threads
3094
3095 check_deps $CONFIG_LIST       \
3096            $CONFIG_EXTRA      \
3097            $HAVE_LIST         \
3098            $DECODER_LIST      \
3099            $ENCODER_LIST      \
3100            $HWACCEL_LIST      \
3101            $PARSER_LIST       \
3102            $BSF_LIST          \
3103            $DEMUXER_LIST      \
3104            $MUXER_LIST        \
3105            $FILTER_LIST       \
3106            $INDEV_LIST        \
3107            $OUTDEV_LIST       \
3108            $PROTOCOL_LIST     \
3109            $ACODEC_TESTS      \
3110            $VCODEC_TESTS      \
3111            $LAVF_TESTS        \
3112            $LAVFI_TESTS       \
3113            $SEEK_TESTS        \
3114
3115 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
3116
3117 echo "install prefix            $prefix"
3118 echo "source path               $source_path"
3119 echo "C compiler                $cc"
3120 echo "ARCH                      $arch ($cpu)"
3121 if test "$build_suffix" != ""; then
3122     echo "build suffix              $build_suffix"
3123 fi
3124 if test "$extra_version" != ""; then
3125     echo "version string suffix     $extra_version"
3126 fi
3127 echo "big-endian                ${bigendian-no}"
3128 echo "runtime cpu detection     ${runtime_cpudetect-no}"
3129 if enabled x86; then
3130     echo "yasm                      ${yasm-no}"
3131     echo "MMX enabled               ${mmx-no}"
3132     echo "MMX2 enabled              ${mmx2-no}"
3133     echo "3DNow! enabled            ${amd3dnow-no}"
3134     echo "3DNow! extended enabled   ${amd3dnowext-no}"
3135     echo "SSE enabled               ${sse-no}"
3136     echo "SSSE3 enabled             ${ssse3-no}"
3137     echo "CMOV enabled              ${cmov-no}"
3138     echo "CMOV is fast              ${fast_cmov-no}"
3139     echo "EBX available             ${ebx_available-no}"
3140     echo "EBP available             ${ebp_available-no}"
3141     echo "10 operands supported     ${ten_operands-no}"
3142 fi
3143 if enabled arm; then
3144     echo "ARMv5TE enabled           ${armv5te-no}"
3145     echo "ARMv6 enabled             ${armv6-no}"
3146     echo "ARMv6T2 enabled           ${armv6t2-no}"
3147     echo "ARM VFP enabled           ${armvfp-no}"
3148     echo "IWMMXT enabled            ${iwmmxt-no}"
3149     echo "NEON enabled              ${neon-no}"
3150 fi
3151 if enabled mips; then
3152     echo "MMI enabled               ${mmi-no}"
3153 fi
3154 if enabled ppc; then
3155     echo "AltiVec enabled           ${altivec-no}"
3156     echo "PPC 4xx optimizations     ${ppc4xx-no}"
3157     echo "dcbzl available           ${dcbzl-no}"
3158 fi
3159 if enabled sparc; then
3160     echo "VIS enabled               ${vis-no}"
3161 fi
3162 echo "debug symbols             ${debug-no}"
3163 echo "strip symbols             ${stripping-no}"
3164 echo "optimizations             ${optimizations-no}"
3165 echo "static                    ${static-no}"
3166 echo "shared                    ${shared-no}"
3167 echo "postprocessing support    ${postproc-no}"
3168 echo "new filter support        ${avfilter-no}"
3169 echo "network support           ${network-no}"
3170 echo "threading support         ${thread_type-no}"
3171 echo "SDL support               ${sdl-no}"
3172 echo "Sun medialib support      ${mlib-no}"
3173 echo "AVISynth enabled          ${avisynth-no}"
3174 echo "libcelt enabled           ${libcelt-no}"
3175 echo "frei0r enabled            ${frei0r-no}"
3176 echo "libdc1394 support         ${libdc1394-no}"
3177 echo "libdirac enabled          ${libdirac-no}"
3178 echo "libfaac enabled           ${libfaac-no}"
3179 echo "libgsm enabled            ${libgsm-no}"
3180 echo "libmp3lame enabled        ${libmp3lame-no}"
3181 echo "libnut enabled            ${libnut-no}"
3182 echo "libopencore-amrnb support ${libopencore_amrnb-no}"
3183 echo "libopencore-amrwb support ${libopencore_amrwb-no}"
3184 echo "libopencv support         ${libopencv-no}"
3185 echo "libopenjpeg enabled       ${libopenjpeg-no}"
3186 echo "librtmp enabled           ${librtmp-no}"
3187 echo "libschroedinger enabled   ${libschroedinger-no}"
3188 echo "libspeex enabled          ${libspeex-no}"
3189 echo "libtheora enabled         ${libtheora-no}"
3190 echo "libva enabled             ${vaapi-no}"
3191 echo "libvo-aacenc support      ${libvo_aacenc-no}"
3192 echo "libvo-amrwbenc support    ${libvo_amrwbenc-no}"
3193 echo "libvorbis enabled         ${libvorbis-no}"
3194 echo "libvpx enabled            ${libvpx-no}"
3195 echo "libx264 enabled           ${libx264-no}"
3196 echo "libxavs enabled           ${libxavs-no}"
3197 echo "libxvid enabled           ${libxvid-no}"
3198 echo "zlib enabled              ${zlib-no}"
3199 echo "bzlib enabled             ${bzlib-no}"
3200 echo
3201
3202 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
3203     echo "Enabled ${type}s:"
3204     eval list=\$$(toupper $type)_LIST
3205     print_enabled '_*' $list | sort | pr -r -3 -t
3206     echo
3207 done
3208
3209 license="LGPL version 2.1 or later"
3210 if enabled nonfree; then
3211     license="nonfree and unredistributable"
3212 elif enabled gplv3; then
3213     license="GPL version 3 or later"
3214 elif enabled lgplv3; then
3215     license="LGPL version 3 or later"
3216 elif enabled gpl; then
3217     license="GPL version 2 or later"
3218 fi
3219
3220 echo "License: $license"
3221
3222 echo "Creating config.mak and config.h..."
3223
3224 # build tree in object directory if source path is different from current one
3225 if enabled source_path_used; then
3226     DIRS="
3227         doc
3228         libavcodec
3229         libavcodec/$arch
3230         libavdevice
3231         libavfilter
3232         libavfilter/$arch
3233         libavfilter/libmpcodecs
3234         libavfilter/libmpcodecs/libvo
3235         libavformat
3236         libavutil
3237         libavutil/$arch
3238         libpostproc
3239         libswscale
3240         libswscale/$arch
3241         tests
3242         tools
3243     "
3244     FILES="
3245         Makefile
3246         common.mak
3247         subdir.mak
3248         doc/texi2pod.pl
3249         libavcodec/Makefile
3250         libavcodec/${arch}/Makefile
3251         libavdevice/Makefile
3252         libavfilter/Makefile
3253         libavfilter/${arch}/Makefile
3254         libavformat/Makefile
3255         libavutil/Makefile
3256         libpostproc/Makefile
3257         libswscale/Makefile
3258     "
3259     map 'mkdir -p $v' $DIRS;
3260     map 'test -f "$source_path/$v" && $ln_s "$source_path/$v" $v' $FILES
3261 fi
3262
3263 enabled stripping || strip="echo skipping strip"
3264
3265 config_files="$TMPH config.mak"
3266
3267 cat > config.mak <<EOF
3268 # Automatically generated by configure - do not modify!
3269 ifndef FFMPEG_CONFIG_MAK
3270 FFMPEG_CONFIG_MAK=1
3271 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
3272 prefix=$prefix
3273 LIBDIR=\$(DESTDIR)$libdir
3274 SHLIBDIR=\$(DESTDIR)$shlibdir
3275 INCDIR=\$(DESTDIR)$incdir
3276 BINDIR=\$(DESTDIR)$bindir
3277 DATADIR=\$(DESTDIR)$datadir
3278 MANDIR=\$(DESTDIR)$mandir
3279 SRC_PATH="$source_path"
3280 SRC_PATH_BARE=$source_path
3281 BUILD_ROOT="$PWD"
3282 CC_IDENT=$cc_ident
3283 ARCH=$arch
3284 CC=$cc
3285 AS=$as
3286 LD=$ld
3287 DEPCC=$dep_cc
3288 YASM=$yasmexe
3289 YASMDEP=$yasmexe
3290 AR=$ar
3291 RANLIB=$ranlib
3292 CP=cp -p
3293 LN_S=$ln_s
3294 STRIP=$strip
3295 CPPFLAGS=$CPPFLAGS
3296 CFLAGS=$CFLAGS
3297 ASFLAGS=$ASFLAGS
3298 CC_O=$CC_O
3299 LDFLAGS=$LDFLAGS
3300 FFSERVERLDFLAGS=$FFSERVERLDFLAGS
3301 SHFLAGS=$SHFLAGS
3302 YASMFLAGS=$YASMFLAGS
3303 BUILDSUF=$build_suffix
3304 FULLNAME=$FULLNAME
3305 LIBPREF=$LIBPREF
3306 LIBSUF=$LIBSUF
3307 LIBNAME=$LIBNAME
3308 SLIBPREF=$SLIBPREF
3309 SLIBSUF=$SLIBSUF
3310 EXESUF=$EXESUF
3311 EXTRA_VERSION=$extra_version
3312 DEPFLAGS=$DEPFLAGS
3313 CCDEP=$CCDEP
3314 ASDEP=$ASDEP
3315 CC_DEPFLAGS=$CC_DEPFLAGS
3316 AS_DEPFLAGS=$AS_DEPFLAGS
3317 HOSTCC=$host_cc
3318 HOSTCFLAGS=$host_cflags
3319 HOSTEXESUF=$HOSTEXESUF
3320 HOSTLDFLAGS=$host_ldflags
3321 HOSTLIBS=$host_libs
3322 TARGET_EXEC=$target_exec
3323 TARGET_PATH=$target_path
3324 SDL_LIBS=$sdl_libs
3325 SDL_CFLAGS=$sdl_cflags
3326 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
3327 EXTRALIBS=$extralibs
3328 INSTALL=install
3329 LIBTARGET=${LIBTARGET}
3330 SLIBNAME=${SLIBNAME}
3331 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
3332 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
3333 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
3334 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
3335 SLIB_INSTALL_EXTRA_CMD=${SLIB_INSTALL_EXTRA_CMD}
3336 SLIB_UNINSTALL_EXTRA_CMD=${SLIB_UNINSTALL_EXTRA_CMD}
3337 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
3338 EOF
3339
3340 get_version(){
3341     name=$1
3342     file=$source_path/$2
3343     eval $(grep "#define ${name}_VERSION_M" "$file" | awk '{ print $2"="$3 }')
3344     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
3345     lcname=$(tolower $name)
3346     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
3347     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
3348 }
3349
3350 get_version LIBSWSCALE  libswscale/swscale.h
3351 get_version LIBPOSTPROC libpostproc/postprocess.h
3352 get_version LIBAVCODEC  libavcodec/version.h
3353 get_version LIBAVDEVICE libavdevice/avdevice.h
3354 get_version LIBAVFORMAT libavformat/version.h
3355 get_version LIBAVUTIL   libavutil/avutil.h
3356 get_version LIBAVFILTER libavfilter/avfilter.h
3357
3358 cat > $TMPH <<EOF
3359 /* Automatically generated by configure - do not modify! */
3360 #ifndef FFMPEG_CONFIG_H
3361 #define FFMPEG_CONFIG_H
3362 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
3363 #define FFMPEG_LICENSE "$(c_escape $license)"
3364 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
3365 #define CC_TYPE "$cc_type"
3366 #define CC_VERSION $cc_version
3367 #define restrict $_restrict
3368 #define EXTERN_PREFIX "${extern_prefix}"
3369 #define EXTERN_ASM ${extern_prefix}
3370 #define SLIBSUF "$SLIBSUF"
3371 EOF
3372
3373 test -n "$malloc_prefix" &&
3374     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
3375
3376 if enabled small || disabled optimizations; then
3377     echo "#undef  av_always_inline"  >> $TMPH
3378     if enabled small; then
3379         echo "#define av_always_inline inline"  >> $TMPH
3380     else
3381         echo "#define av_always_inline av_unused"  >> $TMPH
3382     fi
3383 fi
3384
3385 if enabled yasm; then
3386     append config_files $TMPASM
3387     printf '' >$TMPASM
3388 fi
3389
3390 print_config ARCH_   "$config_files" $ARCH_LIST
3391 print_config HAVE_   "$config_files" $HAVE_LIST
3392 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
3393                                      $CONFIG_EXTRA      \
3394                                      $DECODER_LIST      \
3395                                      $ENCODER_LIST      \
3396                                      $HWACCEL_LIST      \
3397                                      $PARSER_LIST       \
3398                                      $BSF_LIST          \
3399                                      $DEMUXER_LIST      \
3400                                      $MUXER_LIST        \
3401                                      $FILTER_LIST       \
3402                                      $PROTOCOL_LIST     \
3403                                      $INDEV_LIST        \
3404                                      $OUTDEV_LIST       \
3405
3406 cat >>config.mak <<EOF
3407 ACODEC_TESTS=$(print_enabled -n _test $ACODEC_TESTS)
3408 VCODEC_TESTS=$(print_enabled -n _test $VCODEC_TESTS)
3409 LAVF_TESTS=$(print_enabled   -n _test $LAVF_TESTS)
3410 LAVFI_TESTS=$(print_enabled  -n _test $LAVFI_TESTS)
3411 SEEK_TESTS=$(print_enabled   -n _test $SEEK_TESTS)
3412 EOF
3413
3414 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
3415 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
3416
3417 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
3418 cp_if_changed $TMPH config.h
3419 touch .config
3420
3421 enabled yasm && cp_if_changed $TMPASM config.asm
3422
3423 cat > $TMPH <<EOF
3424 /* Generated by ffconf */
3425 #ifndef AVUTIL_AVCONFIG_H
3426 #define AVUTIL_AVCONFIG_H
3427 EOF
3428
3429 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
3430
3431 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
3432
3433 cp_if_changed $TMPH libavutil/avconfig.h
3434
3435 test -n "$WARNINGS" && printf "\n$WARNINGS"
3436
3437 # build pkg-config files
3438
3439 pkgconfig_generate(){
3440 name=$1
3441 shortname=${name#lib}${build_suffix}
3442 comment=$2
3443 version=$3
3444 libs=$4
3445 requires=$5
3446 enabled ${name#lib} || return 0
3447 cat <<EOF > $name/$name.pc
3448 prefix=$prefix
3449 exec_prefix=\${prefix}
3450 libdir=$libdir
3451 includedir=$incdir
3452
3453 Name: $name
3454 Description: $comment
3455 Version: $version
3456 Requires: $(enabled shared || echo $requires)
3457 Requires.private: $(enabled shared && echo $requires)
3458 Conflicts:
3459 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
3460 Libs.private: $(enabled shared && echo $libs)
3461 Cflags: -I\${includedir}
3462 EOF
3463 cat <<EOF > $name/$name-uninstalled.pc
3464 prefix=
3465 exec_prefix=
3466 libdir=\${pcfiledir}
3467 includedir=${source_path}
3468
3469 Name: $name
3470 Description: $comment
3471 Version: $version
3472 Requires: $requires
3473 Conflicts:
3474 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
3475 Cflags: -I\${includedir}
3476 EOF
3477 }
3478
3479 pkgconfig_generate libavutil "FFmpeg utility library" "$LIBAVUTIL_VERSION"
3480 pkgconfig_generate libavcodec "FFmpeg codec library" "$LIBAVCODEC_VERSION" "$extralibs"
3481 pkgconfig_generate libavformat "FFmpeg container format library" "$LIBAVFORMAT_VERSION" "$extralibs" "libavcodec = $LIBAVCODEC_VERSION"
3482 pkgconfig_generate libavdevice "FFmpeg device handling library" "$LIBAVDEVICE_VERSION" "$extralibs" "libavformat = $LIBAVFORMAT_VERSION"
3483 pkgconfig_generate libavfilter "FFmpeg video filtering library" "$LIBAVFILTER_VERSION" "$extralibs"
3484 pkgconfig_generate libpostproc "FFmpeg post processing library" "$LIBPOSTPROC_VERSION"
3485 pkgconfig_generate libswscale "FFmpeg image rescaling library" "$LIBSWSCALE_VERSION" "" "libavutil = $LIBAVUTIL_VERSION"