Add APIchanges entry for the av_metadata_copy() addition.
[ffmpeg:ffmpeg-mt.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-avcore         disable libavcore build
90   --disable-avformat       disable libavformat build
91   --disable-swscale        disable libswscale build
92   --enable-postproc        enable GPLed postprocessing support [no]
93   --disable-avfilter       disable video filter support [no]
94   --disable-pthreads       disable pthreads [auto]
95   --enable-w32threads      use Win32 threads [no]
96   --enable-x11grab         enable X11 grabbing [no]
97   --disable-network        disable network support [no]
98   --disable-mpegaudio-hp   faster (but less accurate) MPEG audio decoding [no]
99   --enable-gray            enable full grayscale support (slower color)
100   --disable-swscale-alpha  disable alpha channel support in swscale
101   --disable-fastdiv        disable table-based division
102   --enable-small           optimize for size instead of speed
103   --disable-aandct         disable AAN DCT code
104   --disable-dct            disable DCT code
105   --disable-fft            disable FFT code
106   --disable-golomb         disable Golomb code
107   --disable-huffman        disable Huffman code
108   --disable-lpc            disable LPC code
109   --disable-mdct           disable MDCT code
110   --disable-rdft           disable RDFT code
111   --disable-vaapi          disable VAAPI code
112   --disable-vdpau          disable VDPAU code
113   --disable-dxva2          disable DXVA2 code
114   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
115   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
116   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
117   --disable-everything     disable all components listed below
118   --disable-encoder=NAME   disable encoder NAME
119   --enable-encoder=NAME    enable encoder NAME
120   --disable-encoders       disable all encoders
121   --disable-decoder=NAME   disable decoder NAME
122   --enable-decoder=NAME    enable decoder NAME
123   --disable-decoders       disable all decoders
124   --disable-hwaccel=NAME   disable hwaccel NAME
125   --enable-hwaccel=NAME    enable hwaccel NAME
126   --disable-hwaccels       disable all hwaccels
127   --disable-muxer=NAME     disable muxer NAME
128   --enable-muxer=NAME      enable muxer NAME
129   --disable-muxers         disable all muxers
130   --disable-demuxer=NAME   disable demuxer NAME
131   --enable-demuxer=NAME    enable demuxer NAME
132   --disable-demuxers       disable all demuxers
133   --enable-parser=NAME     enable parser NAME
134   --disable-parser=NAME    disable parser NAME
135   --disable-parsers        disable all parsers
136   --enable-bsf=NAME        enable bitstream filter NAME
137   --disable-bsf=NAME       disable bitstream filter NAME
138   --disable-bsfs           disable all bitstream filters
139   --enable-protocol=NAME   enable protocol NAME
140   --disable-protocol=NAME  disable protocol NAME
141   --disable-protocols      disable all protocols
142   --disable-indev=NAME     disable input device NAME
143   --disable-outdev=NAME    disable output device NAME
144   --disable-indevs         disable input devices
145   --disable-outdevs        disable output devices
146   --disable-devices        disable all devices
147   --enable-filter=NAME     enable filter NAME
148   --disable-filter=NAME    disable filter NAME
149   --disable-filters        disable all filters
150   --list-decoders          show all available decoders
151   --list-encoders          show all available encoders
152   --list-hwaccels          show all available hardware accelerators
153   --list-muxers            show all available muxers
154   --list-demuxers          show all available demuxers
155   --list-parsers           show all available parsers
156   --list-protocols         show all available protocols
157   --list-bsfs              show all available bitstream filters
158   --list-indevs            show all available input devices
159   --list-outdevs           show all available output devices
160   --list-filters           show all available filters
161
162 External library support:
163   --enable-avisynth        enable reading of AVISynth script files [no]
164   --enable-bzlib           enable bzlib [autodetect]
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-libgsm          enable GSM support via libgsm [no]
174   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
175   --enable-libnut          enable NUT (de)muxing via libnut,
176                            native (de)muxer exists [no]
177   --enable-libopenjpeg     enable JPEG 2000 decoding via OpenJPEG [no]
178   --enable-librtmp         enable RTMP[E] support via librtmp [no]
179   --enable-libschroedinger enable Dirac support via libschroedinger [no]
180   --enable-libspeex        enable Speex decoding via libspeex [no]
181   --enable-libtheora       enable Theora encoding via libtheora [no]
182   --enable-libvorbis       enable Vorbis encoding via libvorbis,
183                            native implementation exists [no]
184   --enable-libvpx          enable VP8 support via libvpx [no]
185   --enable-libx264         enable H.264 encoding via x264 [no]
186   --enable-libxavs         enable AVS encoding via xavs [no]
187   --enable-libxvid         enable Xvid encoding via xvidcore,
188                            native MPEG-4/Xvid encoder exists [no]
189   --enable-mlib            enable Sun medialib [no]
190   --enable-zlib            enable zlib [autodetect]
191
192 Advanced options (experts only):
193   --source-path=PATH       path to source code [$source_path]
194   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
195   --enable-cross-compile   assume a cross-compiler is used
196   --sysroot=PATH           root of cross-build tree
197   --sysinclude=PATH        location of cross-build system headers
198   --target-os=OS           compiler targets OS [$target_os]
199   --target-exec=CMD        command to run executables on target
200   --target-path=DIR        path to view of build directory on target
201   --nm=NM                  use nm tool
202   --ar=AR                  use archive tool AR [$ar_default]
203   --as=AS                  use assembler AS [$as_default]
204   --cc=CC                  use C compiler CC [$cc_default]
205   --ld=LD                  use linker LD
206   --host-cc=HOSTCC         use host C compiler HOSTCC
207   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
208   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
209   --host-libs=HLIBS        use libs HLIBS when linking for host
210   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
211   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
212   --extra-libs=ELIBS       add ELIBS [$ELIBS]
213   --extra-version=STRING   version string suffix []
214   --build-suffix=SUFFIX    library name suffix []
215   --arch=ARCH              select architecture [$arch]
216   --cpu=CPU                select the minimum required CPU (affects
217                            instruction selection, may crash on older CPUs)
218   --disable-asm            disable all assembler optimizations
219   --disable-altivec        disable AltiVec optimizations
220   --disable-amd3dnow       disable 3DNow! optimizations
221   --disable-amd3dnowext    disable 3DNow! extended optimizations
222   --disable-mmx            disable MMX optimizations
223   --disable-mmx2           disable MMX2 optimizations
224   --disable-sse            disable SSE optimizations
225   --disable-ssse3          disable SSSE3 optimizations
226   --disable-armv5te        disable armv5te optimizations
227   --disable-armv6          disable armv6 optimizations
228   --disable-armv6t2        disable armv6t2 optimizations
229   --disable-armvfp         disable ARM VFP optimizations
230   --disable-iwmmxt         disable iwmmxt optimizations
231   --disable-mmi            disable MMI optimizations
232   --disable-neon           disable neon optimizations
233   --disable-vis            disable VIS optimizations
234   --disable-yasm           disable use of yasm assembler
235   --enable-pic             build position-independent code
236   --malloc-prefix=PFX      prefix malloc and related names with PFX
237   --enable-sram            allow use of on-chip SRAM
238   --disable-symver         disable symbol versioning
239
240 Developer options (useful when working on FFmpeg itself):
241   --disable-debug          disable debugging symbols
242   --enable-debug=LEVEL     set the debug level [$debuglevel]
243   --disable-optimizations  disable compiler optimizations
244   --enable-extra-warnings  enable more compiler warnings
245   --disable-stripping      disable stripping of executables and shared libraries
246   --samples=PATH           location of test samples for FATE
247
248 NOTE: Object files are built at the place where configure is launched.
249 EOF
250   exit 0
251 }
252
253 quotes='""'
254
255 log(){
256     echo "$@" >> $logfile
257 }
258
259 log_file(){
260     log BEGIN $1
261     pr -n -t $1 >> $logfile
262     log END $1
263 }
264
265 echolog(){
266     log "$@"
267     echo "$@"
268 }
269
270 warn(){
271     log "WARNING: $*"
272     WARNINGS="${WARNINGS}WARNING: $*\n"
273 }
274
275 die(){
276     echolog "$@"
277     cat <<EOF
278
279 If you think configure made a mistake, make sure you are using the latest
280 version from SVN.  If the latest version fails, report the problem to the
281 ffmpeg-user@mplayerhq.hu mailing list or IRC #ffmpeg on irc.freenode.net.
282 EOF
283     if disabled logging; then
284         cat <<EOF
285 Rerun configure with logging enabled (do not use --disable-logging), and
286 include the log this produces with your report.
287 EOF
288     else
289 cat <<EOF
290 Include the log file "$logfile" produced by configure as this will help
291 solving the problem.
292 EOF
293     fi
294     exit 1
295 }
296
297 # Avoid locale weirdness, besides we really just want to translate ASCII.
298 toupper(){
299     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
300 }
301
302 tolower(){
303     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
304 }
305
306 c_escape(){
307     echo "$*" | sed 's/["\\]/\\\0/g'
308 }
309
310 sh_quote(){
311     v=$(echo "$1" | sed "s/'/'\\\\''/g")
312     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
313     echo "$v"
314 }
315
316 filter(){
317     pat=$1
318     shift
319     for v; do
320         eval "case $v in $pat) echo $v ;; esac"
321     done
322 }
323
324 map(){
325     m=$1
326     shift
327     for v; do eval $m; done
328 }
329
330 set_all(){
331     value=$1
332     shift
333     for var in $*; do
334         eval $var=$value
335     done
336 }
337
338 set_weak(){
339     value=$1
340     shift
341     for var; do
342         eval : \${$var:=$value}
343     done
344 }
345
346 pushvar(){
347     for var in $*; do
348         eval level=\${${var}_level:=0}
349         eval ${var}_${level}="\$$var"
350         eval ${var}_level=$(($level+1))
351     done
352 }
353
354 popvar(){
355     for var in $*; do
356         eval level=\${${var}_level:-0}
357         test $level = 0 && continue
358         eval level=$(($level-1))
359         eval $var="\${${var}_${level}}"
360         eval ${var}_level=$level
361         eval unset ${var}_${level}
362     done
363 }
364
365 enable(){
366     set_all yes $*
367 }
368
369 disable(){
370     set_all no $*
371 }
372
373 enable_weak(){
374     set_weak yes $*
375 }
376
377 disable_weak(){
378     set_weak no $*
379 }
380
381 enable_safe(){
382     for var; do
383         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
384     done
385 }
386
387 disable_safe(){
388     for var; do
389         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
390     done
391 }
392
393 do_enable_deep(){
394     for var; do
395         enabled $var && continue
396         eval sel="\$${var}_select"
397         eval sgs="\$${var}_suggest"
398         pushvar var sgs
399         enable_deep $sel
400         popvar sgs
401         enable_deep_weak $sgs
402         popvar var
403     done
404 }
405
406 enable_deep(){
407     do_enable_deep $*
408     enable $*
409 }
410
411 enable_deep_weak(){
412     do_enable_deep $*
413     enable_weak $*
414 }
415
416 enabled(){
417     test "${1#!}" = "$1" && op== || op=!=
418     eval test "x\$${1#!}" $op "xyes"
419 }
420
421 disabled(){
422     test "${1#!}" = "$1" && op== || op=!=
423     eval test "x\$${1#!}" $op "xno"
424 }
425
426 enabled_all(){
427     for opt; do
428         enabled $opt || return 1
429     done
430 }
431
432 disabled_all(){
433     for opt; do
434         disabled $opt || return 1
435     done
436 }
437
438 enabled_any(){
439     for opt; do
440         enabled $opt && return 0
441     done
442 }
443
444 disabled_any(){
445     for opt; do
446         disabled $opt && return 0
447     done
448     return 1
449 }
450
451 set_default(){
452     for opt; do
453         eval : \${$opt:=\$${opt}_default}
454     done
455 }
456
457 is_in(){
458     value=$1
459     shift
460     for var in $*; do
461         [ $var = $value ] && return 0
462     done
463     return 1
464 }
465
466 check_deps(){
467     for cfg; do
468         cfg="${cfg#!}"
469         enabled ${cfg}_checking && die "Circular dependency for $cfg."
470         disabled ${cfg}_checking && continue
471         enable ${cfg}_checking
472
473         eval dep_all="\$${cfg}_deps"
474         eval dep_any="\$${cfg}_deps_any"
475         eval dep_sel="\$${cfg}_select"
476         eval dep_sgs="\$${cfg}_suggest"
477         eval dep_ifa="\$${cfg}_if"
478         eval dep_ifn="\$${cfg}_if_any"
479
480         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
481         check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
482         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
483
484         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
485         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
486         enabled_all  $dep_all || disable $cfg
487         enabled_any  $dep_any || disable $cfg
488         disabled_any $dep_sel && disable $cfg
489
490         if enabled $cfg; then
491             eval dep_extralibs="\$${cfg}_extralibs"
492             test -n "$dep_extralibs" && add_extralibs $dep_extralibs
493             enable_deep $dep_sel
494             enable_deep_weak $dep_sgs
495         fi
496
497         disable ${cfg}_checking
498     done
499 }
500
501 print_config_h(){
502     enabled $1 && v=1 || v=0
503     echo "#define $2 $v"
504 }
505
506 print_config_mak(){
507     enabled $1 && v= || v=!
508     echo "$v$2=yes"
509 }
510
511 print_config_asm(){
512     enabled $1 && echo "%define $2"
513 }
514
515 print_config(){
516     pfx=$1
517     files=$2
518     shift 2
519     for cfg; do
520         ucname="$(toupper $cfg)"
521         for f in $files; do
522             "print_config_${f##*.}" $cfg ${pfx}${ucname} >>$f
523         done
524     done
525 }
526
527 print_enabled(){
528     test "$1" = -n && end=" " && shift || end="\n"
529     suf=$1
530     shift
531     for v; do
532         enabled $v && printf "%s$end" ${v%$suf};
533     done
534 }
535
536 append(){
537     var=$1
538     shift
539     eval "$var=\"\$$var $*\""
540 }
541
542 prepend(){
543     var=$1
544     shift
545     eval "$var=\"$* \$$var\""
546 }
547
548 add_cppflags(){
549     append CPPFLAGS $($filter_cppflags "$@")
550 }
551
552 add_cflags(){
553     append CFLAGS $($filter_cflags "$@")
554 }
555
556 add_asflags(){
557     append ASFLAGS $($filter_asflags "$@")
558 }
559
560 add_ldflags(){
561     append LDFLAGS "$@"
562 }
563
564 add_extralibs(){
565     prepend extralibs "$@"
566 }
567
568 check_cmd(){
569     log "$@"
570     "$@" >> $logfile 2>&1
571 }
572
573 check_cc(){
574     log check_cc "$@"
575     cat > $TMPC
576     log_file $TMPC
577     check_cmd $cc $CPPFLAGS $CFLAGS "$@" -c -o $TMPO $TMPC
578 }
579
580 check_cpp(){
581     log check_cpp "$@"
582     cat > $TMPC
583     log_file $TMPC
584     check_cmd $cc $CPPFLAGS $CFLAGS "$@" -E -o $TMPO $TMPC
585 }
586
587 check_as(){
588     log check_as "$@"
589     cat > $TMPC
590     log_file $TMPC
591     check_cmd $as $CPPFLAGS $ASFLAGS "$@" -c -o $TMPO $TMPC
592 }
593
594 check_asm(){
595     log check_asm "$@"
596     name="$1"
597     code="$2"
598     shift 2
599     disable $name
600     check_as "$@" <<EOF && enable $name
601 void foo(void){ __asm__ volatile($code); }
602 EOF
603 }
604
605 check_yasm(){
606     log check_yasm "$@"
607     echo "$1" > $TMPS
608     log_file $TMPS
609     shift 1
610     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
611 }
612
613 check_ld(){
614     log check_ld "$@"
615     flags=''
616     libs=''
617     for f; do
618         test "${f}" = "${f#-l}" && flags="$flags $f" || libs="$libs $f"
619     done
620     check_cc $($filter_cflags $flags) || return
621     check_cmd $ld $LDFLAGS $flags -o $TMPE $TMPO $extralibs $libs
622 }
623
624 check_cppflags(){
625     log check_cppflags "$@"
626     set -- $($filter_cppflags "$@")
627     check_cc "$@" <<EOF && append CPPFLAGS "$@"
628 int x;
629 EOF
630 }
631
632 check_cflags(){
633     log check_cflags "$@"
634     set -- $($filter_cflags "$@")
635     check_cc "$@" <<EOF && append CFLAGS "$@"
636 int x;
637 EOF
638 }
639
640 test_ldflags(){
641     log test_ldflags "$@"
642     check_ld "$@" <<EOF
643 int main(void){ return 0; }
644 EOF
645 }
646
647 check_ldflags(){
648     log check_ldflags "$@"
649     test_ldflags "$@" && add_ldflags "$@"
650 }
651
652 check_header(){
653     log check_header "$@"
654     header=$1
655     shift
656     disable_safe $header
657     check_cpp "$@" <<EOF && enable_safe $header
658 #include <$header>
659 int x;
660 EOF
661 }
662
663 check_func(){
664     log check_func "$@"
665     func=$1
666     shift
667     disable $func
668     check_ld "$@" <<EOF && enable $func
669 extern int $func();
670 int main(void){ $func(); }
671 EOF
672 }
673
674 check_mathfunc(){
675     log check_mathfunc "$@"
676     func=$1
677     shift
678     disable $func
679     check_ld "$@" <<EOF && enable $func
680 #include <math.h>
681 float foo(float f) { return $func(f); }
682 int main(void){ return 0; }
683 EOF
684 }
685
686 check_func_headers(){
687     log check_func_headers "$@"
688     headers=$1
689     func=$2
690     shift 2
691     disable $func
692     incs=""
693     for hdr in $headers; do
694         incs="$incs
695 #include <$hdr>"
696     done
697     check_ld "$@" <<EOF && enable $func && enable_safe $headers
698 $incs
699 int main(int argc, char **argv){
700     return (long) $func;
701 }
702 EOF
703 }
704
705 check_cpp_condition(){
706     log check_cpp_condition "$@"
707     header=$1
708     condition=$2
709     shift 2
710     check_cpp $($filter_cppflags "$@") <<EOF
711 #include <$header>
712 #if !($condition)
713 #error "unsatisfied condition: $condition"
714 #endif
715 EOF
716 }
717
718 check_lib(){
719     log check_lib "$@"
720     header="$1"
721     func="$2"
722     shift 2
723     check_header $header && check_func $func "$@" && add_extralibs "$@"
724 }
725
726 check_lib2(){
727     log check_lib2 "$@"
728     headers="$1"
729     func="$2"
730     shift 2
731     check_func_headers "$headers" $func "$@" && add_extralibs "$@"
732 }
733
734 check_exec(){
735     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
736 }
737
738 check_exec_crash(){
739     code=$(cat)
740
741     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
742     # are safe but may not be available everywhere.  Thus we use
743     # raise(SIGTERM) instead.  The check is run in a subshell so we
744     # can redirect the "Terminated" message from the shell.  SIGBUS
745     # is not defined by standard C so it is used conditionally.
746
747     (check_exec "$@") >> $logfile 2>&1 <<EOF
748 #include <signal.h>
749 static void sighandler(int sig){
750     raise(SIGTERM);
751 }
752 int main(void){
753     signal(SIGILL, sighandler);
754     signal(SIGFPE, sighandler);
755     signal(SIGSEGV, sighandler);
756 #ifdef SIGBUS
757     signal(SIGBUS, sighandler);
758 #endif
759     { $code }
760 }
761 EOF
762 }
763
764 check_type(){
765     log check_type "$@"
766     headers=$1
767     type=$2
768     shift 2
769     disable_safe "$type"
770     incs=""
771     for hdr in $headers; do
772         incs="$incs
773 #include <$hdr>"
774     done
775     check_cc "$@" <<EOF && enable_safe "$type"
776 $incs
777 $type v;
778 EOF
779 }
780
781 check_struct(){
782     log check_type "$@"
783     headers=$1
784     struct=$2
785     member=$3
786     shift 3
787     disable_safe "${struct}_${member}"
788     incs=""
789     for hdr in $headers; do
790         incs="$incs
791 #include <$hdr>"
792     done
793     check_cc "$@" <<EOF && enable_safe "${struct}_${member}"
794 $incs
795 const void *p = &(($struct *)0)->$member;
796 EOF
797 }
798
799 require(){
800     name="$1"
801     header="$2"
802     func="$3"
803     shift 3
804     check_lib $header $func "$@" || die "ERROR: $name not found"
805 }
806
807 require2(){
808     name="$1"
809     headers="$2"
810     func="$3"
811     shift 3
812     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
813 }
814
815 check_host_cc(){
816     log check_host_cc "$@"
817     cat > $TMPC
818     log_file $TMPC
819     check_cmd $host_cc $host_cflags "$@" -c -o $TMPO $TMPC
820 }
821
822 check_host_cflags(){
823     log check_host_cflags "$@"
824     check_host_cc "$@" <<EOF && append host_cflags "$@"
825 int x;
826 EOF
827 }
828
829 apply(){
830     file=$1
831     shift
832     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
833 }
834
835 cp_if_changed(){
836     cmp -s "$1" "$2" &&
837         echo "$2 is unchanged" ||
838         cp -f "$1" "$2"
839 }
840
841 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
842 # system-dependent things.
843
844 COMPONENT_LIST="
845     bsfs
846     decoders
847     demuxers
848     encoders
849     filters
850     hwaccels
851     indevs
852     muxers
853     outdevs
854     parsers
855     protocols
856 "
857
858 CONFIG_LIST="
859     $COMPONENT_LIST
860     aandct
861     avcodec
862     avcore
863     avdevice
864     avfilter
865     avformat
866     avisynth
867     bzlib
868     dct
869     doc
870     dwt
871     dxva2
872     fastdiv
873     ffmpeg
874     ffplay
875     ffprobe
876     ffserver
877     fft
878     frei0r
879     golomb
880     gpl
881     gray
882     h264dsp
883     h264pred
884     hardcoded_tables
885     huffman
886     libdc1394
887     libdirac
888     libfaac
889     libgsm
890     libmp3lame
891     libnut
892     libopencore_amrnb
893     libopencore_amrwb
894     libopencv
895     libopenjpeg
896     librtmp
897     libschroedinger
898     libspeex
899     libtheora
900     libvorbis
901     libvpx
902     libx264
903     libxavs
904     libxvid
905     lpc
906     lsp
907     mdct
908     memalign_hack
909     mlib
910     mpegaudio_hp
911     network
912     nonfree
913     pic
914     postproc
915     rdft
916     rtpdec
917     runtime_cpudetect
918     shared
919     small
920     sram
921     static
922     swscale
923     swscale_alpha
924     vaapi
925     vdpau
926     version3
927     x11grab
928     zlib
929 "
930
931 THREADS_LIST='
932     pthreads
933     w32threads
934 '
935
936 ARCH_LIST='
937     alpha
938     arm
939     avr32
940     avr32_ap
941     avr32_uc
942     bfin
943     ia64
944     m68k
945     mips
946     mips64
947     parisc
948     ppc
949     ppc64
950     s390
951     sh4
952     sparc
953     sparc64
954     tomi
955     x86
956     x86_32
957     x86_64
958 '
959
960 ARCH_EXT_LIST='
961     altivec
962     amd3dnow
963     amd3dnowext
964     armv5te
965     armv6
966     armv6t2
967     armvfp
968     iwmmxt
969     mmi
970     mmx
971     mmx2
972     neon
973     ppc4xx
974     sse
975     ssse3
976     vis
977 '
978
979 HAVE_LIST_PUB='
980     bigendian
981     fast_unaligned
982 '
983
984 HAVE_LIST="
985     $ARCH_EXT_LIST
986     $HAVE_LIST_PUB
987     $THREADS_LIST
988     aligned_stack
989     alsa_asoundlib_h
990     altivec_h
991     arpa_inet_h
992     attribute_may_alias
993     attribute_packed
994     bswap
995     closesocket
996     cmov
997     conio_h
998     dcbzl
999     dev_bktr_ioctl_bt848_h
1000     dev_bktr_ioctl_meteor_h
1001     dev_ic_bt8xx_h
1002     dev_video_meteor_ioctl_meteor_h
1003     dev_video_bktr_ioctl_bt848_h
1004     dlfcn_h
1005     dlopen
1006     dos_paths
1007     ebp_available
1008     ebx_available
1009     exp2
1010     exp2f
1011     fast_64bit
1012     fast_clz
1013     fast_cmov
1014     fcntl
1015     fork
1016     getaddrinfo
1017     gethrtime
1018     GetProcessMemoryInfo
1019     GetProcessTimes
1020     getrusage
1021     gnu_as
1022     struct_rusage_ru_maxrss
1023     ibm_asm
1024     inet_aton
1025     inline_asm
1026     isatty
1027     ldbrx
1028     libdc1394_1
1029     libdc1394_2
1030     llrint
1031     llrintf
1032     local_aligned_16
1033     local_aligned_8
1034     log2
1035     log2f
1036     loongson
1037     lrint
1038     lrintf
1039     lzo1x_999_compress
1040     machine_ioctl_bt848_h
1041     machine_ioctl_meteor_h
1042     malloc_h
1043     MapViewOfFile
1044     memalign
1045     mkstemp
1046     mmap
1047     pld
1048     posix_memalign
1049     round
1050     roundf
1051     sdl
1052     sdl_video_size
1053     setmode
1054     socklen_t
1055     soundcard_h
1056     poll_h
1057     setrlimit
1058     strerror_r
1059     strtok_r
1060     struct_addrinfo
1061     struct_ipv6_mreq
1062     struct_sockaddr_in6
1063     struct_sockaddr_sa_len
1064     struct_sockaddr_storage
1065     symver
1066     symver_gnu_asm
1067     symver_asm_label
1068     sys_mman_h
1069     sys_resource_h
1070     sys_select_h
1071     sys_soundcard_h
1072     sys_videoio_h
1073     ten_operands
1074     termios_h
1075     threads
1076     truncf
1077     vfp_args
1078     VirtualAlloc
1079     winsock2_h
1080     xform_asm
1081     xmm_clobbers
1082     yasm
1083 "
1084
1085 # options emitted with CONFIG_ prefix but not available on command line
1086 CONFIG_EXTRA="
1087     avutil
1088     gplv3
1089     lgplv3
1090 "
1091
1092 CMDLINE_SELECT="
1093     $ARCH_EXT_LIST
1094     $CONFIG_LIST
1095     $THREADS_LIST
1096     asm
1097     cross_compile
1098     debug
1099     extra_warnings
1100     logging
1101     optimizations
1102     stripping
1103     symver
1104     yasm
1105 "
1106
1107 PATHS_LIST='
1108     bindir
1109     datadir
1110     incdir
1111     libdir
1112     mandir
1113     prefix
1114     shlibdir
1115 '
1116
1117 CMDLINE_SET="
1118     $PATHS_LIST
1119     ar
1120     arch
1121     as
1122     build_suffix
1123     cc
1124     cpu
1125     cross_prefix
1126     dep_cc
1127     extra_version
1128     host_cc
1129     host_cflags
1130     host_ldflags
1131     host_libs
1132     host_os
1133     ld
1134     logfile
1135     malloc_prefix
1136     nm
1137     samples
1138     source_path
1139     strip
1140     sysinclude
1141     sysroot
1142     target_exec
1143     target_os
1144     target_path
1145 "
1146
1147 CMDLINE_APPEND="
1148     extra_cflags
1149 "
1150
1151 # code dependency declarations
1152
1153 # architecture extensions
1154
1155 armv5te_deps="arm"
1156 armv6_deps="arm"
1157 armv6t2_deps="arm"
1158 armvfp_deps="arm"
1159 iwmmxt_deps="arm"
1160 neon_deps="arm"
1161
1162 mmi_deps="mips"
1163
1164 altivec_deps="ppc"
1165 ppc4xx_deps="ppc"
1166
1167 vis_deps="sparc"
1168
1169 x86_64_suggest="cmov fast_cmov"
1170 amd3dnow_deps="mmx"
1171 amd3dnowext_deps="amd3dnow"
1172 mmx_deps="x86"
1173 mmx2_deps="mmx"
1174 sse_deps="mmx"
1175 ssse3_deps="sse"
1176
1177 aligned_stack_if_any="ppc x86"
1178 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1179 fast_clz_if_any="alpha armv5te avr32 mips ppc x86"
1180 fast_unaligned_if_any="armv6 ppc x86"
1181
1182 need_memalign="altivec neon sse"
1183 inline_asm_deps="!tms470"
1184
1185 symver_if_any="symver_asm_label symver_gnu_asm"
1186
1187 # subsystems
1188 dct_select="rdft"
1189 mdct_select="fft"
1190 rdft_select="fft"
1191
1192 # decoders / encoders / hardware accelerators
1193 aac_decoder_select="mdct rdft"
1194 aac_encoder_select="mdct"
1195 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1196 ac3_decoder_select="mdct ac3_parser"
1197 ac3_encoder_select="mdct"
1198 alac_encoder_select="lpc"
1199 amrnb_decoder_select="lsp"
1200 amrwb_decoder_select="lsp"
1201 atrac1_decoder_select="mdct"
1202 atrac3_decoder_select="mdct"
1203 binkaudio_dct_decoder_select="mdct rdft dct"
1204 binkaudio_rdft_decoder_select="mdct rdft"
1205 cavs_decoder_select="golomb"
1206 cook_decoder_select="mdct"
1207 cscd_decoder_suggest="zlib"
1208 dca_decoder_select="mdct"
1209 dnxhd_encoder_select="aandct"
1210 dxa_decoder_select="zlib"
1211 eac3_decoder_select="ac3_decoder"
1212 eamad_decoder_select="aandct"
1213 eatgq_decoder_select="aandct"
1214 eatqi_decoder_select="aandct"
1215 ffv1_decoder_select="golomb"
1216 flac_decoder_select="golomb"
1217 flac_encoder_select="golomb lpc"
1218 flashsv_decoder_select="zlib"
1219 flashsv_encoder_select="zlib"
1220 flv_decoder_select="h263_decoder"
1221 flv_encoder_select="h263_encoder"
1222 fraps_decoder_select="huffman"
1223 h261_encoder_select="aandct"
1224 h263_decoder_select="h263_parser"
1225 h263_encoder_select="aandct"
1226 h263_vaapi_hwaccel_select="vaapi h263_decoder"
1227 h263i_decoder_select="h263_decoder"
1228 h263p_encoder_select="h263_encoder"
1229 h264_decoder_select="golomb h264dsp h264pred"
1230 h264_dxva2_hwaccel_deps="dxva2api_h"
1231 h264_dxva2_hwaccel_select="dxva2 h264_decoder"
1232 h264_vaapi_hwaccel_select="vaapi"
1233 h264_vdpau_decoder_select="vdpau h264_decoder"
1234 imc_decoder_select="fft mdct"
1235 jpegls_decoder_select="golomb"
1236 jpegls_encoder_select="golomb"
1237 ljpeg_encoder_select="aandct"
1238 loco_decoder_select="golomb"
1239 mjpeg_encoder_select="aandct"
1240 mlp_decoder_select="mlp_parser"
1241 mp1float_decoder_select="dct"
1242 mp2float_decoder_select="dct"
1243 mp3adufloat_decoder_select="dct"
1244 mp3float_decoder_select="dct"
1245 mp3on4float_decoder_select="dct"
1246 mpeg1video_encoder_select="aandct"
1247 mpeg2video_encoder_select="aandct"
1248 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1249 mpeg4_encoder_select="h263_encoder"
1250 mpeg_vdpau_decoder_select="vdpau mpegvideo_decoder"
1251 mpeg1_vdpau_decoder_select="vdpau mpeg1video_decoder"
1252 mpeg2_dxva2_hwaccel_deps="dxva2api_h"
1253 mpeg2_dxva2_hwaccel_select="dxva2 mpeg2video_decoder"
1254 mpeg2_vaapi_hwaccel_select="vaapi mpeg2video_decoder"
1255 mpeg4_vaapi_hwaccel_select="vaapi mpeg4_decoder"
1256 mpeg4_vdpau_decoder_select="vdpau mpeg4_decoder"
1257 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1258 mpeg_xvmc_decoder_select="mpegvideo_decoder"
1259 msmpeg4v1_decoder_select="h263_decoder"
1260 msmpeg4v1_encoder_select="h263_encoder"
1261 msmpeg4v2_decoder_select="h263_decoder"
1262 msmpeg4v2_encoder_select="h263_encoder"
1263 msmpeg4v3_decoder_select="h263_decoder"
1264 msmpeg4v3_encoder_select="h263_encoder"
1265 nellymoser_decoder_select="mdct"
1266 nellymoser_encoder_select="mdct"
1267 png_decoder_select="zlib"
1268 png_encoder_select="zlib"
1269 qcelp_decoder_select="lsp"
1270 qdm2_decoder_select="mdct rdft"
1271 ra_144_encoder_select="lpc"
1272 rv10_decoder_select="h263_decoder"
1273 rv10_encoder_select="h263_encoder"
1274 rv20_decoder_select="h263_decoder"
1275 rv20_encoder_select="h263_encoder"
1276 rv30_decoder_select="golomb h264pred"
1277 rv40_decoder_select="golomb h264pred"
1278 shorten_decoder_select="golomb"
1279 sipr_decoder_select="lsp"
1280 snow_decoder_select="dwt"
1281 snow_encoder_select="aandct dwt"
1282 sonic_decoder_select="golomb"
1283 sonic_encoder_select="golomb"
1284 sonic_ls_encoder_select="golomb"
1285 svq1_encoder_select="aandct"
1286 svq3_decoder_select="golomb h264dsp h264pred"
1287 svq3_decoder_suggest="zlib"
1288 theora_decoder_select="vp3_decoder"
1289 tiff_decoder_suggest="zlib"
1290 tiff_encoder_suggest="zlib"
1291 truehd_decoder_select="mlp_decoder"
1292 tscc_decoder_select="zlib"
1293 twinvq_decoder_select="mdct lsp"
1294 vc1_decoder_select="h263_decoder"
1295 vc1_dxva2_hwaccel_deps="dxva2api_h DXVA_PictureParameters_wDecodedPictureIndex"
1296 vc1_dxva2_hwaccel_select="dxva2 vc1_decoder"
1297 vc1_vaapi_hwaccel_select="vaapi vc1_decoder"
1298 vc1_vdpau_decoder_select="vdpau vc1_decoder"
1299 vorbis_decoder_select="mdct"
1300 vorbis_encoder_select="mdct"
1301 vp6_decoder_select="huffman"
1302 vp6a_decoder_select="vp6_decoder"
1303 vp6f_decoder_select="vp6_decoder"
1304 vp8_decoder_select="h264pred"
1305 wmapro_decoder_select="mdct"
1306 wmav1_decoder_select="mdct"
1307 wmav1_encoder_select="mdct"
1308 wmav2_decoder_select="mdct"
1309 wmav2_encoder_select="mdct"
1310 wmavoice_decoder_select="lsp rdft dct mdct"
1311 wmv1_decoder_select="h263_decoder"
1312 wmv1_encoder_select="h263_encoder"
1313 wmv2_decoder_select="h263_decoder"
1314 wmv2_encoder_select="h263_encoder"
1315 wmv3_decoder_select="vc1_decoder"
1316 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1317 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1318 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
1319 zlib_decoder_select="zlib"
1320 zlib_encoder_select="zlib"
1321 zmbv_decoder_select="zlib"
1322 zmbv_encoder_select="zlib"
1323
1324 vaapi_deps="va_va_h"
1325 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1326
1327 # parsers
1328 h264_parser_select="golomb h264dsp h264pred"
1329
1330 # external libraries
1331 libdirac_decoder_deps="libdirac !libschroedinger"
1332 libdirac_encoder_deps="libdirac"
1333 libfaac_encoder_deps="libfaac"
1334 libgsm_decoder_deps="libgsm"
1335 libgsm_encoder_deps="libgsm"
1336 libgsm_ms_decoder_deps="libgsm"
1337 libgsm_ms_encoder_deps="libgsm"
1338 libmp3lame_encoder_deps="libmp3lame"
1339 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1340 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1341 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1342 libopenjpeg_decoder_deps="libopenjpeg"
1343 libschroedinger_decoder_deps="libschroedinger"
1344 libschroedinger_encoder_deps="libschroedinger"
1345 libspeex_decoder_deps="libspeex"
1346 libtheora_encoder_deps="libtheora"
1347 libvorbis_encoder_deps="libvorbis"
1348 libvpx_decoder_deps="libvpx"
1349 libvpx_encoder_deps="libvpx"
1350 libx264_encoder_deps="libx264"
1351 libxavs_encoder_deps="libxavs"
1352 libxvid_encoder_deps="libxvid"
1353
1354 # demuxers / muxers
1355 ac3_demuxer_deps="ac3_parser"
1356 asf_stream_muxer_select="asf_muxer"
1357 avisynth_demuxer_deps="avisynth"
1358 dirac_demuxer_deps="dirac_parser"
1359 eac3_demuxer_select="ac3_parser"
1360 flac_demuxer_deps="flac_parser"
1361 ipod_muxer_select="mov_muxer"
1362 libnut_demuxer_deps="libnut"
1363 libnut_muxer_deps="libnut"
1364 matroska_audio_muxer_select="matroska_muxer"
1365 matroska_demuxer_suggest="zlib bzlib"
1366 mov_demuxer_suggest="zlib"
1367 mp3_demuxer_deps="mpegaudio_parser"
1368 mp4_muxer_select="mov_muxer"
1369 mpegtsraw_demuxer_select="mpegts_demuxer"
1370 mxf_d10_muxer_select="mxf_muxer"
1371 ogg_demuxer_select="golomb"
1372 psp_muxer_select="mov_muxer"
1373 rtp_demuxer_select="sdp_demuxer"
1374 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1375 rtsp_demuxer_select="http_protocol rtpdec"
1376 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol"
1377 sap_demuxer_select="sdp_demuxer"
1378 sap_muxer_select="rtp_muxer rtp_protocol"
1379 sdp_demuxer_select="rtpdec"
1380 spdif_muxer_select="aac_parser"
1381 tg2_muxer_select="mov_muxer"
1382 tgp_muxer_select="mov_muxer"
1383 w64_demuxer_deps="wav_demuxer"
1384
1385 # indevs / outdevs
1386 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1387 alsa_outdev_deps="alsa_asoundlib_h"
1388 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1389 dv1394_indev_deps="dv1394 dv_demuxer"
1390 jack_indev_deps="jack_jack_h"
1391 libdc1394_indev_deps="libdc1394"
1392 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1393 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1394 v4l_indev_deps="linux_videodev_h"
1395 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1396 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1397 vfwcap_indev_extralibs="-lavicap32"
1398 x11_grab_device_indev_deps="x11grab XShmCreateImage"
1399 x11_grab_device_indev_extralibs="-lX11 -lXext -lXfixes"
1400
1401 # protocols
1402 gopher_protocol_deps="network"
1403 http_protocol_deps="network"
1404 http_protocol_select="tcp_protocol"
1405 mmsh_protocol_select="http_protocol"
1406 mmst_protocol_deps="network"
1407 rtmp_protocol_select="tcp_protocol"
1408 rtp_protocol_select="udp_protocol"
1409 tcp_protocol_deps="network"
1410 udp_protocol_deps="network"
1411
1412 # filters
1413 blackframe_filter_deps="gpl"
1414 cropdetect_filter_deps="gpl"
1415 frei0r_filter_deps="frei0r dlopen strtok_r"
1416 frei0r_src_filter_deps="frei0r dlopen strtok_r"
1417 hqdn3d_filter_deps="gpl"
1418 scale_filter_deps="swscale"
1419 ocv_filter_deps="libopencv"
1420 yadif_filter_deps="gpl"
1421
1422 # libraries
1423 avdevice_deps="avcodec avformat"
1424 avformat_deps="avcodec"
1425
1426 # programs
1427 ffmpeg_deps="avcodec avformat swscale"
1428 ffmpeg_select="buffer_filter"
1429 ffplay_deps="avcodec avformat swscale sdl"
1430 ffplay_select="rdft"
1431 ffprobe_deps="avcodec avformat"
1432 ffserver_deps="avformat ffm_muxer rtp_protocol rtsp_demuxer"
1433 ffserver_extralibs='$ldl'
1434
1435 doc_deps="texi2html"
1436
1437 # tests
1438
1439 test_deps(){
1440     suf1=$1
1441     suf2=$2
1442     shift 2
1443     for v; do
1444         dep=${v%=*}
1445         tests=${v#*=}
1446         for name in ${tests}; do
1447             eval ${name}_test_deps="'${dep}$suf1 ${dep}$suf2'"
1448         done
1449     done
1450 }
1451
1452 set_ne_test_deps(){
1453     eval ${1}_be_test_deps="bigendian"
1454     eval ${1}_le_test_deps="!bigendian"
1455 }
1456
1457 test_deps _encoder _decoder                                             \
1458     adpcm_g726=g726                                                     \
1459     adpcm_ima_qt                                                        \
1460     adpcm_ima_wav                                                       \
1461     adpcm_ms                                                            \
1462     adpcm_swf                                                           \
1463     adpcm_yamaha=adpcm_yam                                              \
1464     alac                                                                \
1465     asv1                                                                \
1466     asv2                                                                \
1467     bmp                                                                 \
1468     dnxhd="dnxhd_1080i dnxhd_720p dnxhd_720p_rd"                        \
1469     dvvideo="dv dv50"                                                   \
1470     ffv1                                                                \
1471     flac                                                                \
1472     flashsv                                                             \
1473     flv                                                                 \
1474     gif                                                                 \
1475     h261                                                                \
1476     h263="h263 h263p"                                                   \
1477     huffyuv                                                             \
1478     jpegls                                                              \
1479     mjpeg="jpg mjpeg ljpeg"                                             \
1480     mp2                                                                 \
1481     mpeg1video="mpeg mpeg1b"                                            \
1482     mpeg2video="mpeg2 mpeg2thread"                                      \
1483     mpeg4="mpeg4 mpeg4adv mpeg4nr mpeg4thread error rc"                 \
1484     msmpeg4v3=msmpeg4                                                   \
1485     msmpeg4v2                                                           \
1486     pbm=pbmpipe                                                         \
1487     pcx                                                                 \
1488     pgm="pgm pgmpipe"                                                   \
1489     ppm="ppm ppmpipe"                                                   \
1490     rawvideo="rgb yuv"                                                  \
1491     roq                                                                 \
1492     rv10                                                                \
1493     rv20                                                                \
1494     sgi                                                                 \
1495     snow="snow snowll"                                                  \
1496     svq1                                                                \
1497     targa=tga                                                           \
1498     tiff                                                                \
1499     wmav1                                                               \
1500     wmav2                                                               \
1501     wmv1                                                                \
1502     wmv2                                                                \
1503
1504 test_deps _muxer _demuxer                                               \
1505     aiff                                                                \
1506     pcm_alaw=alaw                                                       \
1507     asf                                                                 \
1508     au                                                                  \
1509     avi                                                                 \
1510     dv=dv_fmt                                                           \
1511     ffm                                                                 \
1512     flv=flv_fmt                                                         \
1513     gxf                                                                 \
1514     matroska=mkv                                                        \
1515     mmf                                                                 \
1516     mov                                                                 \
1517     pcm_mulaw=mulaw                                                     \
1518     mxf                                                                 \
1519     nut                                                                 \
1520     ogg                                                                 \
1521     rawvideo=pixfmt                                                     \
1522     rm                                                                  \
1523     swf                                                                 \
1524     mpegts=ts                                                           \
1525     voc                                                                 \
1526     wav                                                                 \
1527     yuv4mpegpipe=yuv4mpeg                                               \
1528
1529 ac3_fixed_test_deps="ac3_fixed_encoder ac3_decoder rm_muxer rm_demuxer"
1530 mpg_test_deps="mpeg1system_muxer mpegps_demuxer"
1531
1532 set_ne_test_deps pixdesc
1533 set_ne_test_deps pixfmts_copy
1534 set_ne_test_deps pixfmts_crop
1535 set_ne_test_deps pixfmts_hflip
1536 set_ne_test_deps pixfmts_null
1537 set_ne_test_deps pixfmts_pad
1538 set_ne_test_deps pixfmts_scale
1539 set_ne_test_deps pixfmts_vflip
1540
1541 # default parameters
1542
1543 logfile="config.log"
1544
1545 # installation paths
1546 prefix_default="/usr/local"
1547 bindir_default='${prefix}/bin'
1548 datadir_default='${prefix}/share/ffmpeg'
1549 incdir_default='${prefix}/include'
1550 libdir_default='${prefix}/lib'
1551 mandir_default='${prefix}/share/man'
1552 shlibdir_default="$libdir_default"
1553
1554 # toolchain
1555 ar_default="ar"
1556 cc_default="gcc"
1557 cc_version=\"unknown\"
1558 host_cc_default="gcc"
1559 ln_s="ln -sf"
1560 nm_default="nm"
1561 objformat="elf"
1562 ranlib="ranlib"
1563 strip_default="strip"
1564 yasmexe="yasm"
1565 nogas=":"
1566
1567 nm_opts='-g'
1568
1569 # machine
1570 arch_default=$(uname -m)
1571 cpu="generic"
1572
1573 # OS
1574 target_os_default=$(tolower $(uname -s))
1575 host_os=$target_os_default
1576
1577 # configurable options
1578 enable avcodec
1579 enable avcore
1580 enable avdevice
1581 enable avfilter
1582 enable avformat
1583 enable avutil
1584 enable asm
1585 enable debug
1586 enable doc
1587 enable fastdiv
1588 enable ffmpeg
1589 enable ffplay
1590 enable ffprobe
1591 enable ffserver
1592 enable mpegaudio_hp
1593 enable network
1594 enable optimizations
1595 enable protocols
1596 enable static
1597 enable stripping
1598 enable swscale
1599 enable swscale_alpha
1600
1601 # build settings
1602 SHFLAGS='-shared -Wl,-soname,$$(@F)'
1603 FFSERVERLDFLAGS=-Wl,-E
1604 LIBPREF="lib"
1605 LIBSUF=".a"
1606 FULLNAME='$(NAME)$(BUILDSUF)'
1607 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
1608 SLIBPREF="lib"
1609 SLIBSUF=".so"
1610 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
1611 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
1612 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
1613 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
1614
1615 CC_O='-o $@'
1616
1617 host_cflags='-D_ISOC99_SOURCE -D_POSIX_C_SOURCE=200112 -O3 -g -Wall'
1618 host_libs='-lm'
1619
1620 target_path='$(CURDIR)'
1621
1622 # since the object filename is not given with the -MM flag, the compiler
1623 # is only able to print the basename, and we must add the path ourselves
1624 DEPEND_CMD='$(DEPCC) $(DEPFLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
1625 DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -MM'
1626
1627 # find source path
1628 source_path="$(dirname "$0")"
1629 enable source_path_used
1630 if test -f configure; then
1631     source_path="$(pwd)"
1632     disable source_path_used
1633 else
1634     source_path="$(cd "$source_path"; pwd)"
1635     echo "$source_path" | grep -q '[[:blank:]]' &&
1636         die "Out of tree builds are impossible with whitespace in source path."
1637     test -e "$source_path/config.h" &&
1638         die "Out of tree builds are impossible with config.h in source dir."
1639 fi
1640
1641 for v in "$@"; do
1642     r=${v#*=}
1643     l=${v%"$r"}
1644     r=$(sh_quote "$r")
1645     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
1646 done
1647
1648 find_things(){
1649     thing=$1
1650     pattern=$2
1651     file=$source_path/$3
1652     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
1653 }
1654
1655 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
1656 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
1657 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
1658 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
1659 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
1660 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
1661 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
1662 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
1663 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
1664 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
1665 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
1666
1667 find_tests(){
1668     map "echo ${2}\${v}_test" $(ls "$source_path"/tests/ref/$1 | grep -v '[^-a-z0-9_]')
1669 }
1670
1671 ACODEC_TESTS=$(find_tests acodec)
1672 VCODEC_TESTS=$(find_tests vsynth1)
1673 LAVF_TESTS=$(find_tests lavf)
1674 LAVFI_TESTS=$(find_tests lavfi)
1675 SEEK_TESTS=$(find_tests seek seek_)
1676
1677 pcm_test_deps=$(map 'echo ${v%_*}_decoder $v' $(filter pcm_* $ENCODER_LIST))
1678
1679 for n in $COMPONENT_LIST; do
1680     v=$(toupper ${n%s})_LIST
1681     eval enable \$$v
1682     eval ${n}_if_any="\$$v"
1683 done
1684
1685 enable $ARCH_EXT_LIST $ACODEC_TESTS $VCODEC_TESTS $LAVF_TESTS $LAVFI_TESTS $SEEK_TESTS
1686
1687 die_unknown(){
1688     echo "Unknown option \"$1\"."
1689     echo "See $0 --help for available options."
1690     exit 1
1691 }
1692
1693 show_list() {
1694     suffix=_$1
1695     shift
1696     echo $* | sed s/$suffix//g | tr ' ' '\n' | sort | pr -3 -t
1697     exit 0
1698 }
1699
1700 for opt do
1701     optval="${opt#*=}"
1702     case "$opt" in
1703     --extra-ldflags=*) add_ldflags $optval
1704     ;;
1705     --extra-libs=*) add_extralibs $optval
1706     ;;
1707     --disable-devices) disable $INDEV_LIST $OUTDEV_LIST
1708     ;;
1709     --enable-debug=*) debuglevel="$optval"
1710     ;;
1711     --disable-everything)
1712     map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
1713     ;;
1714     --enable-*=*|--disable-*=*)
1715     eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
1716     is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
1717     eval list=\$$(toupper $thing)_LIST
1718     name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
1719     $action $(filter "$name" $list)
1720     ;;
1721     --enable-?*|--disable-?*)
1722     eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
1723     if is_in $option $COMPONENT_LIST; then
1724         test $action = disable && action=unset
1725         eval $action \$$(toupper ${option%s})_LIST
1726     elif is_in $option $CMDLINE_SELECT; then
1727         $action $option
1728     else
1729         die_unknown $opt
1730     fi
1731     ;;
1732     --list-*)
1733         NAME="${opt#--list-}"
1734         is_in $NAME $COMPONENT_LIST || die_unknown $opt
1735         NAME=${NAME%s}
1736         eval show_list $NAME \$$(toupper $NAME)_LIST
1737     ;;
1738     --help|-h) show_help
1739     ;;
1740     *)
1741     optname="${opt%%=*}"
1742     optname="${optname#--}"
1743     optname=$(echo "$optname" | sed 's/-/_/g')
1744     if is_in $optname $CMDLINE_SET; then
1745         eval $optname='$optval'
1746     elif is_in $optname $CMDLINE_APPEND; then
1747         append $optname "$optval"
1748     else
1749          die_unknown $opt
1750     fi
1751     ;;
1752     esac
1753 done
1754
1755 disabled logging && logfile=/dev/null
1756
1757 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
1758 set >> $logfile
1759
1760 test -n "$cross_prefix" && enable cross_compile
1761
1762 if enabled cross_compile; then
1763     test -n "$arch" && test -n "$target_os" ||
1764         die "Must specify target arch and OS when cross-compiling"
1765 fi
1766
1767 set_default arch target_os
1768
1769 ar_default="${cross_prefix}${ar_default}"
1770 cc_default="${cross_prefix}${cc_default}"
1771 nm_default="${cross_prefix}${nm_default}"
1772 ranlib="${cross_prefix}${ranlib}"
1773 strip_default="${cross_prefix}${strip_default}"
1774
1775 sysinclude_default="${sysroot}/usr/include"
1776
1777 set_default cc nm strip sysinclude
1778 enabled cross_compile || host_cc_default=$cc
1779 set_default host_cc
1780
1781 exesuf() {
1782     case $1 in
1783         mingw32*|cygwin*|*-dos|freedos|opendos|os/2*) echo .exe ;;
1784     esac
1785 }
1786
1787 EXESUF=$(exesuf $target_os)
1788 HOSTEXESUF=$(exesuf $host_os)
1789
1790 # set temporary file name
1791 : ${TMPDIR:=$TEMPDIR}
1792 : ${TMPDIR:=$TMP}
1793 : ${TMPDIR:=/tmp}
1794
1795 if ! check_cmd type mktemp; then
1796     # simple replacement for missing mktemp
1797     # NOT SAFE FOR GENERAL USE
1798     mktemp(){
1799         echo "${2%XXX*}.${HOSTNAME}.${UID}.$$"
1800     }
1801 fi
1802
1803 tmpfile(){
1804     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
1805         (set -C; exec > $tmp) 2>/dev/null ||
1806         die "Unable to create temporary file in $TMPDIR."
1807     append TMPFILES $tmp
1808     eval $1=$tmp
1809 }
1810
1811 trap 'rm -f -- $TMPFILES' EXIT
1812 trap exit HUP INT TERM
1813
1814 tmpfile TMPC  .c
1815 tmpfile TMPE  $EXESUF
1816 tmpfile TMPH  .h
1817 tmpfile TMPO  .o
1818 tmpfile TMPS  .S
1819 tmpfile TMPV  .ver
1820 tmpfile TMPSH .sh
1821 tmpfile TMPASM .asm
1822
1823 unset -f mktemp
1824
1825 # make sure we can execute files in $TMPDIR
1826 cat > $TMPSH 2>> $logfile <<EOF
1827 #! /bin/sh
1828 EOF
1829 chmod +x $TMPSH >> $logfile 2>&1
1830 if ! $TMPSH >> $logfile 2>&1; then
1831     cat <<EOF
1832 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
1833 variable to another directory and make sure that it is not mounted noexec.
1834 EOF
1835     die "Sanity test failed."
1836 fi
1837
1838 filter_cflags=echo
1839 filter_cppflags=echo
1840 filter_asflags=echo
1841
1842 if   $cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
1843     cc_type=llvm_gcc
1844     cc_version=__VERSION__
1845     gcc_extra_ver=$(expr "$($cc --version | head -n1)" : '.*\((.*)\)')
1846     cc_ident="llvm-gcc $($cc -dumpversion) $gcc_extra_ver"
1847     CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1848     AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1849     speed_cflags='-O3'
1850     size_cflags='-Os'
1851 elif $cc -v 2>&1 | grep -qi ^gcc; then
1852     cc_type=gcc
1853     cc_version=__VERSION__
1854     gcc_extra_ver=$(expr "$($cc --version | head -n1)" : '.*\((.*)\)')
1855     cc_ident="gcc $($cc -dumpversion) $gcc_extra_ver"
1856     if ! $cc -dumpversion | grep -q '^2\.'; then
1857         CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1858         AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1859     fi
1860     speed_cflags='-O3'
1861     size_cflags='-Os'
1862 elif $cc --version 2>/dev/null | grep -q Intel; then
1863     cc_type=icc
1864     cc_version="AV_STRINGIFY(__INTEL_COMPILER)"
1865     cc_ident=$($cc --version | head -n1)
1866     icc_version=$($cc -dumpversion)
1867     CC_DEPFLAGS='-MMD'
1868     AS_DEPFLAGS='-MMD'
1869     speed_cflags='-O3'
1870     size_cflags='-Os'
1871     noopt_cflags='-O1'
1872 elif $cc -v 2>&1 | grep -q xlc; then
1873     cc_type=xlc
1874     cc_version="AV_STRINGIFY(__IBMC__)"
1875     cc_ident=$($cc -qversion 2>/dev/null | head -n1)
1876     speed_cflags='-O5'
1877     size_cflags='-O5 -qcompact'
1878 elif $cc -V 2>/dev/null | grep -q Compaq; then
1879     cc_type=ccc
1880     cc_version="AV_STRINGIFY(__DECC_VER)"
1881     cc_ident=$($cc -V | head -n1 | cut -d' ' -f1-3)
1882     DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -M'
1883     debuglevel=3
1884     add_ldflags -Wl,-z,now # calls to libots crash without this
1885     speed_cflags='-fast'
1886     size_cflags='-O1'
1887 elif $cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
1888     test -d "$sysroot" || die "No valid sysroot specified."
1889     cc_type=armcc
1890     cc_version="AV_STRINGIFY(__ARMCC_VERSION)"
1891     cc_ident=$($cc --vsn | head -n1)
1892     armcc_conf="$PWD/armcc.conf"
1893     $cc --arm_linux_configure                 \
1894         --arm_linux_config_file="$armcc_conf" \
1895         --configure_sysroot="$sysroot"        \
1896         --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
1897         die "Error creating armcc configuration file."
1898     $cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
1899     cc="$cc --arm_linux_config_file=$armcc_conf --translate_gcc"
1900     as_default="${cross_prefix}gcc"
1901     CC_DEPFLAGS='-MMD'
1902     AS_DEPFLAGS='-MMD'
1903     speed_cflags='-O3'
1904     size_cflags='-Os'
1905 elif $cc -version 2>/dev/null | grep -q TMS470; then
1906     cc_type=tms470
1907     cc_version="AV_STRINGIFY(__TI_COMPILER_VERSION__)"
1908     cc_ident=$($cc -version | head -n1 | tr -s ' ')
1909     cc="$cc --gcc --abi=eabi -eo=.o -mc -me"
1910     CC_O='-fr=$(@D)'
1911     as_default="${cross_prefix}gcc"
1912     ld_default="${cross_prefix}gcc"
1913     TMPO=$(basename $TMPC .c).o
1914     append TMPFILES $TMPO
1915     add_cflags -D__gnuc_va_list=va_list -D__USER_LABEL_PREFIX__=
1916     CC_DEPFLAGS='-ppa -ppd=$(@:.o=.d)'
1917     AS_DEPFLAGS='-MMD'
1918     speed_cflags='-O3 -mf=5'
1919     size_cflags='-O3 -mf=2'
1920     filter_cflags=tms470_flags
1921     tms470_flags(){
1922         for flag; do
1923             case $flag in
1924                 -march=*|-mcpu=*)
1925                     case "${flag#*=}" in
1926                         armv7-a|cortex-a*)      echo -mv=7a8 ;;
1927                         armv7-r|cortex-r*)      echo -mv=7r4 ;;
1928                         armv7-m|cortex-m*)      echo -mv=7m3 ;;
1929                         armv6*|arm11*)          echo -mv=6   ;;
1930                         armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
1931                                                 echo -mv=5e  ;;
1932                         armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
1933                     esac
1934                     ;;
1935                 -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
1936                 -mfpu=vfp)      echo --float_support=vfpv2        ;;
1937                 -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
1938                 -msoft-float)   echo --float_support=vfplib       ;;
1939                 -O[0-3]|-mf=*)  echo $flag                        ;;
1940                 -g)             echo -g -mn                       ;;
1941                 -pds=*)         echo $flag                        ;;
1942             esac
1943         done
1944     }
1945 elif $cc -v 2>&1 | grep -q clang; then
1946     cc_type=clang
1947     $cc -dM -E $TMPC | grep -q __clang_version__ &&
1948         cc_version=__clang_version__ || cc_version=__VERSION__
1949     cc_ident=$($cc --version | head -n1)
1950     CC_DEPFLAGS='-MMD'
1951     AS_DEPFLAGS='-MMD'
1952     speed_cflags='-O3'
1953     size_cflags='-Os'
1954 elif $cc -V 2>&1 | grep -q Sun; then
1955     cc_type=suncc
1956     cc_version="AV_STRINGIFY(__SUNPRO_C)"
1957     cc_ident=$($cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
1958     DEPEND_CMD='$(DEPCC) $(DEPFLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
1959     DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -xM1'
1960     speed_cflags='-O5'
1961     size_cflags='-O5 -xspace'
1962     filter_cflags=suncc_flags
1963     suncc_flags(){
1964         for flag; do
1965             case $flag in
1966                 -march=*|-mcpu=*)
1967                     case "${flag#*=}" in
1968                         native)                   echo -xtarget=native       ;;
1969                         v9|niagara)               echo -xarch=sparc          ;;
1970                         ultrasparc)               echo -xarch=sparcvis       ;;
1971                         ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
1972                         i586|pentium)             echo -xchip=pentium        ;;
1973                         i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
1974                         pentium3*|c3-2)           echo -xtarget=pentium3     ;;
1975                         pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
1976                         pentium4*)          echo -xtarget=pentium4           ;;
1977                         prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
1978                         *-sse3)             echo -xarch=sse3                 ;;
1979                         core2)              echo -xarch=ssse3 -xchip=core2   ;;
1980                         amdfam10|barcelona)       echo -xarch=sse4_1         ;;
1981                         athlon-4|athlon-[mx]p)    echo -xarch=ssea           ;;
1982                         k8|opteron|athlon64|athlon-fx)
1983                                                   echo -xarch=sse2a          ;;
1984                         athlon*)                  echo -xarch=pentium_proa   ;;
1985                     esac
1986                     ;;
1987                 -std=c99)             echo -xc99              ;;
1988                 -fomit-frame-pointer) echo -xregs=frameptr    ;;
1989                 -fPIC)                echo -KPIC -xcode=pic32 ;;
1990                 -W*,*)                echo $flag              ;;
1991                 -f*-*|-W*)                                    ;;
1992                 *)                    echo $flag              ;;
1993             esac
1994         done
1995     }
1996 elif $cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
1997     cc_type=pathscale
1998     cc_version=__PATHSCALE__
1999     cc_ident=$($cc -v 2>&1 | head -n1 | tr -d :)
2000     CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2001     AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2002     speed_cflags='-O2'
2003     size_cflags='-Os'
2004 elif $cc -v 2>&1 | grep -q Open64; then
2005     cc_type=open64
2006     cc_version=__OPEN64__
2007     cc_ident=$($cc -v 2>&1 | head -n1 | tr -d :)
2008     CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2009     AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2010     speed_cflags='-O2'
2011     size_cflags='-Os'
2012 fi
2013
2014 test -n "$cc_type" && enable $cc_type ||
2015     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2016
2017 : ${as_default:=$cc}
2018 : ${dep_cc_default:=$cc}
2019 : ${ld_default:=$cc}
2020 set_default ar as dep_cc ld
2021
2022 test -n "$CC_DEPFLAGS" || CCDEP=$DEPEND_CMD
2023 test -n "$AS_DEPFLAGS" || ASDEP=$DEPEND_CMD
2024
2025 add_cflags $extra_cflags
2026 add_asflags $extra_cflags
2027
2028 if test -n "$sysroot"; then
2029     case "$cc_type" in
2030         gcc|llvm_gcc)
2031             add_cppflags --sysroot="$sysroot"
2032             add_ldflags --sysroot="$sysroot"
2033         ;;
2034         tms470)
2035             add_cppflags -I"$sysinclude"
2036             add_ldflags  --sysroot="$sysroot"
2037         ;;
2038         clang)
2039             add_cppflags -isysroot "$sysroot"
2040             add_ldflags -isysroot "$sysroot"
2041         ;;
2042     esac
2043 fi
2044
2045 if test "$cpu" = host; then
2046     enabled cross_compile && die "--cpu=host makes no sense when cross-compiling."
2047
2048     case "$cc_type" in
2049         gcc|llvm_gcc)
2050             check_native(){
2051                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2052                 sed -n "/$1=/{
2053                             s/.*$1=\\([^ ]*\\).*/\\1/
2054                             p
2055                             q
2056                         }" $TMPE
2057             }
2058             cpu=$(check_native -march || check_native -mcpu)
2059         ;;
2060     esac
2061
2062     test "${cpu:-host}" = host && die "--cpu=host not supported with compiler $cc"
2063 fi
2064
2065 # Deal with common $arch aliases
2066 case "$arch" in
2067     arm*)
2068         arch="arm"
2069     ;;
2070     mips|mipsel|IP*)
2071         arch="mips"
2072     ;;
2073     mips64*)
2074         arch="mips"
2075         subarch="mips64"
2076     ;;
2077     parisc|hppa)
2078         arch="parisc"
2079     ;;
2080     parisc64|hppa64)
2081         arch="parisc"
2082         subarch="parisc64"
2083     ;;
2084     "Power Macintosh"|ppc|powerpc)
2085         arch="ppc"
2086     ;;
2087     ppc64|powerpc64)
2088         arch="ppc"
2089         subarch="ppc64"
2090     ;;
2091     s390|s390x)
2092         arch="s390"
2093     ;;
2094     sh4|sh)
2095         arch="sh4"
2096     ;;
2097     sun4u|sparc64)
2098         arch="sparc"
2099         subarch="sparc64"
2100     ;;
2101     i[3-6]86|i86pc|BePC|x86_64|amd64)
2102         arch="x86"
2103     ;;
2104 esac
2105
2106 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2107 enable $arch
2108
2109 # Add processor-specific flags
2110 if test "$cpu" = generic; then
2111     : do nothing
2112 elif enabled ppc; then
2113
2114     case $(tolower $cpu) in
2115         601|ppc601|powerpc601)
2116             cpuflags="-mcpu=601"
2117             disable altivec
2118         ;;
2119         603*|ppc603*|powerpc603*)
2120             cpuflags="-mcpu=603"
2121             disable altivec
2122         ;;
2123         604*|ppc604*|powerpc604*)
2124             cpuflags="-mcpu=604"
2125             disable altivec
2126         ;;
2127         g3|75*|ppc75*|powerpc75*)
2128             cpuflags="-mcpu=750 -mpowerpc-gfxopt"
2129             disable altivec
2130         ;;
2131         g4|745*|ppc745*|powerpc745*)
2132             cpuflags="-mcpu=7450 -mpowerpc-gfxopt"
2133         ;;
2134         74*|ppc74*|powerpc74*)
2135             cpuflags="-mcpu=7400 -mpowerpc-gfxopt"
2136         ;;
2137         g5|970|ppc970|powerpc970|power4*)
2138             cpuflags="-mcpu=970 -mpowerpc-gfxopt -mpowerpc64"
2139         ;;
2140         cell)
2141             cpuflags="-mcpu=cell"
2142             enable ldbrx
2143         ;;
2144         e500v2)
2145             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
2146             disable altivec
2147         ;;
2148         e500)
2149             cpuflags="-mcpu=8540 -mhard-float"
2150             disable altivec
2151         ;;
2152     esac
2153
2154 elif enabled x86; then
2155
2156     case $cpu in
2157         i[345]86|pentium)
2158             cpuflags="-march=$cpu"
2159             disable mmx
2160         ;;
2161         # targets that do NOT support conditional mov (cmov)
2162         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
2163             cpuflags="-march=$cpu"
2164             disable cmov
2165         ;;
2166         # targets that do support conditional mov (cmov)
2167         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64|k8|opteron|athlon-fx|core2|amdfam10|barcelona|atom)
2168             cpuflags="-march=$cpu"
2169             enable cmov
2170             enable fast_cmov
2171         ;;
2172         # targets that do support conditional mov but on which it's slow
2173         pentium4|pentium4m|prescott|nocona)
2174             cpuflags="-march=$cpu"
2175             enable cmov
2176             disable fast_cmov
2177         ;;
2178     esac
2179
2180 elif enabled sparc; then
2181
2182     case $cpu in
2183         niagara)
2184             cpuflags="-mcpu=$cpu"
2185             disable vis
2186         ;;
2187         sparc64)
2188             cpuflags="-mcpu=v9"
2189         ;;
2190     esac
2191
2192 elif enabled arm; then
2193
2194     case $cpu in
2195         armv*)
2196             cpuflags="-march=$cpu"
2197             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
2198         ;;
2199         *)
2200             cpuflags="-mcpu=$cpu"
2201             case $cpu in
2202                 cortex-a*)                               subarch=armv7a  ;;
2203                 cortex-r*)                               subarch=armv7r  ;;
2204                 cortex-m*)                               subarch=armv7m  ;;
2205                 arm11*)                                  subarch=armv6   ;;
2206                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
2207                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
2208             esac
2209         ;;
2210     esac
2211
2212 elif enabled alpha; then
2213
2214     enabled ccc && cpuflags="-arch $cpu" || cpuflags="-mcpu=$cpu"
2215
2216 elif enabled bfin; then
2217
2218     cpuflags="-mcpu=$cpu"
2219
2220 elif enabled mips; then
2221
2222     cpuflags="-march=$cpu"
2223
2224 elif enabled avr32; then
2225
2226     case $cpu in
2227         ap7[02]0[0-2])
2228             subarch="avr32_ap"
2229             cpuflags="-mpart=$cpu"
2230         ;;
2231         ap)
2232             subarch="avr32_ap"
2233             cpuflags="-march=$cpu"
2234         ;;
2235         uc3[ab]*)
2236             subarch="avr32_uc"
2237             cpuflags="-mcpu=$cpu"
2238         ;;
2239         uc)
2240             subarch="avr32_uc"
2241             cpuflags="-march=$cpu"
2242         ;;
2243     esac
2244
2245 fi
2246
2247 add_cflags $cpuflags
2248 add_asflags $cpuflags
2249
2250 # compiler sanity check
2251 check_exec <<EOF
2252 int main(void){ return 0; }
2253 EOF
2254 if test "$?" != 0; then
2255     echo "$cc is unable to create an executable file."
2256     if test -z "$cross_prefix" && ! enabled cross_compile ; then
2257         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
2258         echo "Only do this if you know what cross compiling means."
2259     fi
2260     die "C compiler test failed."
2261 fi
2262
2263 add_cppflags -D_ISOC99_SOURCE -D_POSIX_C_SOURCE=200112
2264 check_cflags -std=c99
2265 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
2266 #include <stdlib.h>
2267 EOF
2268 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
2269 #include <stdlib.h>
2270 EOF
2271
2272 check_host_cflags -std=c99
2273
2274 case "$arch" in
2275     alpha|ia64|mips|parisc|sparc)
2276         spic=$shared
2277     ;;
2278     x86)
2279         subarch="x86_32"
2280         check_cc <<EOF && subarch="x86_64"
2281         int test[(int)sizeof(char*) - 7];
2282 EOF
2283         if test "$subarch" = "x86_64"; then
2284             spic=$shared
2285         fi
2286     ;;
2287 esac
2288
2289 enable $subarch
2290 enabled spic && enable pic
2291
2292 # OS specific
2293 case $target_os in
2294     haiku)
2295         prefix_default="/boot/common"
2296         network_extralibs="-lnetwork"
2297         ;;
2298     sunos)
2299         FFSERVERLDFLAGS=""
2300         SHFLAGS='-shared -Wl,-h,$$(@F)'
2301         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
2302         network_extralibs="-lsocket -lnsl"
2303         add_cppflags -D__EXTENSIONS__
2304         nm_opts='-P -g'
2305         ;;
2306     netbsd)
2307         oss_indev_extralibs="-lossaudio"
2308         oss_outdev_extralibs="-lossaudio"
2309         add_cppflags -D_XOPEN_SOURCE=600
2310         ;;
2311     openbsd)
2312         enable malloc_aligned
2313         # On OpenBSD 4.5. the compiler does not use PIC unless
2314         # explicitly using -fPIC. FFmpeg builds fine without PIC,
2315         # however the generated executable will not do anything
2316         # (simply quits with exit-code 1, no crash, no output).
2317         # Thus explicitly enable PIC here.
2318         enable pic
2319         SHFLAGS='-shared'
2320         oss_indev_extralibs="-lossaudio"
2321         oss_outdev_extralibs="-lossaudio"
2322         ;;
2323     freebsd|dragonfly)
2324         enable malloc_aligned
2325         ;;
2326     bsd/os)
2327         add_extralibs -lpoll -lgnugetopt
2328         strip="strip -d"
2329         ;;
2330     darwin)
2331         enable malloc_aligned
2332         gas="gas-preprocessor.pl $cc"
2333         enabled ppc && add_asflags -force_cpusubtype_ALL
2334         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR) -Wl,-read_only_relocs,suppress'
2335         strip="${strip} -x"
2336         add_ldflags -Wl,-dynamic,-search_paths_first
2337         SLIBSUF=".dylib"
2338         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
2339         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
2340         FFSERVERLDFLAGS=-Wl,-bind_at_load
2341         objformat="macho"
2342         enabled x86_64 && objformat="macho64"
2343         enabled_any pic shared ||
2344             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
2345         ;;
2346     mingw32*)
2347         if test $target_os = "mingw32ce"; then
2348             disable network
2349         else
2350             target_os=mingw32
2351         fi
2352         LIBTARGET=i386
2353         if enabled x86_64; then
2354             enable malloc_aligned
2355             LIBTARGET=x64
2356         elif enabled arm; then
2357             LIBTARGET=arm
2358         fi
2359         shlibdir_default="$bindir_default"
2360         disable ffserver
2361         SLIBPREF=""
2362         SLIBSUF=".dll"
2363         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
2364         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
2365         SLIB_EXTRA_CMD='-lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.lib)'
2366         SLIB_INSTALL_EXTRA_CMD='-install -m 644 $(SUBDIR)$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.lib) "$(SHLIBDIR)/$(SLIBNAME:$(SLIBSUF)=.lib)"; \
2367             install -m 644 $(SUBDIR)$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.lib) "$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.lib)"; \
2368             install -d "$(LIBDIR)"; \
2369             install -m 644 $(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) "$(LIBDIR)/lib$(SLIBNAME:$(SLIBSUF)=.dll.a)"'
2370         SLIB_UNINSTALL_EXTRA_CMD='rm -f "$(SHLIBDIR)/$(SLIBNAME:$(SLIBSUF)=.lib)"'
2371         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'
2372         objformat="win32"
2373         enable dos_paths
2374         check_cflags -fno-common
2375         check_cpp_condition _mingw.h "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) \
2376                                       || (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
2377                 die "ERROR: MinGW runtime version must be >= 3.15."
2378         ;;
2379     cygwin*)
2380         target_os=cygwin
2381         shlibdir_default="$bindir_default"
2382         SLIBPREF="cyg"
2383         SLIBSUF=".dll"
2384         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
2385         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
2386         SHFLAGS='-shared -Wl,--enable-auto-image-base'
2387         objformat="win32"
2388         enable dos_paths
2389         check_cflags -fno-common
2390         ;;
2391     *-dos|freedos|opendos)
2392         disable ffplay ffserver
2393         disable $INDEV_LIST $OUTDEV_LIST
2394         network_extralibs="-lsocket"
2395         objformat="coff"
2396         enable dos_paths
2397         ;;
2398     linux)
2399         enable dv1394
2400         ;;
2401     irix*)
2402         target_os=irix
2403         ranlib="echo ignoring ranlib"
2404         ;;
2405     os/2*)
2406         strip="lxlite"
2407         ln_s="cp -f"
2408         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
2409         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
2410         FFSERVERLDFLAGS=""
2411         LIBSUF="_s.a"
2412         SLIBPREF=""
2413         SLIBSUF=".dll"
2414         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
2415         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
2416         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
2417           echo PROTMODE >> $(SUBDIR)$(NAME).def; \
2418           echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
2419           echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
2420           echo EXPORTS >> $(SUBDIR)$(NAME).def; \
2421           emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
2422         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
2423           emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
2424         SLIB_INSTALL_EXTRA_CMD='install -m 644 $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib "$(LIBDIR)"'
2425         SLIB_UNINSTALL_EXTRA_CMD='rm -f "$(LIBDIR)"/$(LIBPREF)$(NAME)_dll.a "$(LIBDIR)"/$(LIBPREF)$(NAME)_dll.lib'
2426         enable dos_paths
2427         ;;
2428     gnu/kfreebsd)
2429         ;;
2430     gnu)
2431         ;;
2432     none)
2433         ;;
2434     *)
2435         die "Unknown OS '$target_os'."
2436         ;;
2437 esac
2438
2439 echo "config:$arch:$subarch:$cpu:$target_os:$cc_ident:$FFMPEG_CONFIGURATION" >config.fate
2440
2441 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable pic
2442
2443 set_default $PATHS_LIST
2444
2445 # we need to build at least one lib type
2446 if ! enabled_any static shared; then
2447     cat <<EOF
2448 At least one library type must be built.
2449 Specify --enable-static to build the static libraries or --enable-shared to
2450 build the shared libraries as well. To only build the shared libraries specify
2451 --disable-static in addition to --enable-shared.
2452 EOF
2453     exit 1;
2454 fi
2455
2456 disabled static && LIBNAME=""
2457
2458 die_license_disabled() {
2459     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
2460 }
2461
2462 die_license_disabled gpl libx264
2463 die_license_disabled gpl libxavs
2464 die_license_disabled gpl libxvid
2465 die_license_disabled gpl postproc
2466 die_license_disabled gpl x11grab
2467
2468 die_license_disabled nonfree libfaac
2469
2470 die_license_disabled version3 libopencore_amrnb
2471 die_license_disabled version3 libopencore_amrwb
2472
2473 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2474
2475 check_deps $ARCH_EXT_LIST
2476
2477 disabled optimizations || check_cflags -fomit-frame-pointer
2478
2479 enable_pic() {
2480     enable pic
2481     add_cppflags -DPIC
2482     add_cflags   -fPIC
2483     add_asflags  -fPIC
2484 }
2485
2486 enabled pic && enable_pic
2487
2488 check_cc <<EOF || die "Symbol mangling check failed."
2489 int ff_extern;
2490 EOF
2491 sym=$($nm $nm_opts $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
2492 extern_prefix=${sym%%ff_extern*}
2493
2494 check_cc <<EOF && enable inline_asm
2495 void foo(void) { __asm__ volatile ("" ::); }
2496 EOF
2497
2498 _restrict=
2499 for restrict_keyword in restrict __restrict__ __restrict; do
2500     check_cc <<EOF && _restrict=$restrict_keyword && break
2501 void foo(char * $restrict_keyword p);
2502 EOF
2503 done
2504
2505 check_cc <<EOF && enable attribute_packed
2506 struct { int x; } __attribute__((packed)) x;
2507 EOF
2508
2509 check_cc <<EOF && enable attribute_may_alias
2510 union { int x; } __attribute__((may_alias)) x;
2511 EOF
2512
2513 check_cc <<EOF || die "endian test failed"
2514 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
2515 EOF
2516 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
2517
2518 if enabled alpha; then
2519
2520     check_cflags -mieee
2521
2522 elif enabled arm; then
2523
2524     check_cflags -marm
2525     nogas=die
2526
2527     check_ld <<EOF && enable vfp_args
2528 __asm__ (".eabi_attribute 28, 1");
2529 int main(void) { return 0; }
2530 EOF
2531
2532     # We have to check if pld is a nop and disable it.
2533     check_asm pld '"pld [r0]"'
2534
2535     enabled armv5te && check_asm armv5te '"qadd r0, r0, r0"'
2536     enabled armv6   && check_asm armv6   '"sadd16 r0, r0, r0"'
2537     enabled armv6t2 && check_asm armv6t2 '"movt r0, #0"'
2538     enabled armvfp  && check_asm armvfp  '"fadds s0, s0, s0"'
2539     enabled iwmmxt  && check_asm iwmmxt  '"wunpckelub wr6, wr4"'
2540     enabled neon    && check_asm neon    '"vadd.i16 q0, q0, q0"'
2541
2542     enabled_all armv6t2 shared !pic && enable_pic
2543
2544 elif enabled mips; then
2545
2546     check_asm loongson '"dmult.g $1, $2, $3"'
2547     enabled mmi     && check_asm mmi     '"lq $2, 0($2)"'
2548
2549 elif enabled ppc; then
2550
2551     enable local_aligned_8 local_aligned_16
2552
2553     check_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
2554     check_asm ibm_asm   '"add 0, 0, 0"'
2555     check_asm ppc4xx    '"maclhw r10, r11, r12"'
2556     check_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
2557
2558     # AltiVec flags: The FSF version of GCC differs from the Apple version
2559     if enabled altivec; then
2560         nogas=warn
2561         check_cflags -maltivec -mabi=altivec &&
2562         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
2563         check_cflags -faltivec
2564
2565         # check if our compiler supports Motorola AltiVec C API
2566         check_cc <<EOF || disable altivec
2567 $inc_altivec_h
2568 int main(void) {
2569     vector signed int v1, v2, v3;
2570     v1 = vec_add(v2,v3);
2571     return 0;
2572 }
2573 EOF
2574
2575         # check if our compiler supports braces for vector declarations
2576         check_cc <<EOF || die "You need a compiler that supports {} in AltiVec vector declarations."
2577 $inc_altivec_h
2578 int main (void) { (vector int) {1}; return 0; }
2579 EOF
2580     fi
2581
2582 elif enabled sparc; then
2583
2584     enabled vis && check_asm vis '"pdist %f0, %f0, %f0"' -mcpu=ultrasparc &&
2585         add_cflags -mcpu=ultrasparc -mtune=ultrasparc
2586
2587 elif enabled x86; then
2588
2589     enable local_aligned_8 local_aligned_16
2590
2591     # check whether EBP is available on x86
2592     # As 'i' is stored on the stack, this program will crash
2593     # if the base pointer is used to access it because the
2594     # base pointer is cleared in the inline assembly code.
2595     check_exec_crash <<EOF && enable ebp_available
2596     volatile int i=0;
2597     __asm__ volatile (
2598         "xorl %%ebp, %%ebp"
2599     ::: "%ebp");
2600     return i;
2601 EOF
2602
2603     # check whether EBX is available on x86
2604     check_asm ebx_available '""::"b"(0)' &&
2605         check_asm ebx_available '"":::"%ebx"'
2606
2607     # check whether xmm clobbers are supported
2608     check_asm xmm_clobbers '"":::"%xmm0"'
2609
2610     # check whether more than 10 operands are supported
2611     check_cc <<EOF && enable ten_operands
2612 int main(void) {
2613     int x=0;
2614     __asm__ volatile(
2615         ""
2616         :"+&rm"(x), "+&rm"(x), "+&rm"(x), "+&rm"(x), "+&rm"(x), "+&rm"(x)
2617     );
2618     return 0;
2619 }
2620 EOF
2621
2622     # check whether binutils is new enough to compile SSSE3/MMX2
2623     enabled ssse3 && check_asm ssse3 '"pabsw %xmm0, %xmm0"'
2624     enabled mmx2  && check_asm mmx2  '"pmaxub %mm0, %mm1"'
2625
2626     check_asm bswap '"bswap %%eax" ::: "%eax"'
2627
2628     if ! disabled_any asm mmx yasm; then
2629         if check_cmd $yasmexe --version; then
2630             enabled x86_64 && yasm_extra="-m amd64"
2631             yasm_debug="-g dwarf2"
2632         elif check_cmd nasm -v; then
2633             yasmexe=nasm
2634             yasm_debug="-g -F dwarf"
2635             enabled x86_64 && test "$objformat" = elf && objformat=elf64
2636         fi
2637
2638         YASMFLAGS="-f $objformat $yasm_extra"
2639         enabled pic               && append YASMFLAGS "-DPIC"
2640         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
2641         case "$objformat" in
2642             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
2643         esac
2644
2645         check_yasm "pabsw xmm0, xmm0" && enable yasm ||
2646             die "yasm not found, use --disable-yasm for a crippled build"
2647     fi
2648
2649     case "$cpu" in
2650         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
2651             disable fast_clz
2652         ;;
2653     esac
2654
2655 fi
2656
2657 if enabled asm; then
2658     as=${gas:=$as}
2659     check_asm gnu_as '".macro m n\n\\n:.int 0\n.endm\nm x"' ||
2660         $nogas "GNU assembler not found, install gas-preprocessor"
2661 fi
2662
2663 if check_func dlopen; then
2664     ldl=
2665 elif check_func dlopen -ldl; then
2666     ldl=-ldl
2667 fi
2668
2669 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
2670 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
2671
2672 check_func  fcntl
2673 check_func  fork
2674 check_func  getaddrinfo $network_extralibs
2675 check_func  gethrtime
2676 check_func  getrusage
2677 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
2678 check_func  inet_aton $network_extralibs
2679 check_func  isatty
2680 check_func  ${malloc_prefix}memalign            && enable memalign
2681 check_func  mkstemp
2682 check_func  mmap
2683 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
2684 check_func  setrlimit
2685 check_func  strerror_r
2686 check_func  strtok_r
2687 check_func_headers io.h setmode
2688 check_func_headers lzo/lzo1x.h lzo1x_999_compress
2689 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
2690 check_func_headers windows.h GetProcessTimes
2691 check_func_headers windows.h MapViewOfFile
2692 check_func_headers windows.h VirtualAlloc
2693
2694 check_header conio.h
2695 check_header dlfcn.h
2696 check_header dxva2api.h
2697 check_header malloc.h
2698 check_header poll.h
2699 check_header sys/mman.h
2700 check_header sys/resource.h
2701 check_header sys/select.h
2702 check_header termios.h
2703 check_header vdpau/vdpau.h
2704 check_header vdpau/vdpau_x11.h
2705 check_header X11/extensions/XvMClib.h
2706
2707 check_struct dxva2api.h DXVA_PictureParameters wDecodedPictureIndex
2708
2709 if ! enabled_any memalign memalign_hack posix_memalign malloc_aligned &&
2710      enabled_any $need_memalign ; then
2711     die "Error, no aligned memory allocator but SSE enabled, disable it or use --enable-memalign-hack."
2712 fi
2713
2714 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
2715 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
2716
2717 # check for some common methods of building with pthread support
2718 # do this before the optional library checks as some of them require pthreads
2719 if ! disabled pthreads && ! enabled w32threads; then
2720     enable pthreads
2721     if check_func pthread_create; then
2722         :
2723     elif check_func pthread_create -pthread; then
2724         add_cflags -pthread
2725         add_extralibs -pthread
2726     elif check_func pthread_create -pthreads; then
2727         add_cflags -pthreads
2728         add_extralibs -pthreads
2729     elif check_func pthread_create -lpthreadGC2; then
2730         add_extralibs -lpthreadGC2
2731     elif ! check_lib pthread.h pthread_create -lpthread; then
2732         disable pthreads
2733     fi
2734 fi
2735
2736 for thread in $THREADS_LIST; do
2737     if enabled $thread; then
2738         test -n "$thread_type" &&
2739             die "ERROR: Only one thread type must be selected." ||
2740             thread_type="$thread"
2741     fi
2742 done
2743
2744 check_lib math.h sin -lm
2745 disabled vaapi || check_lib va/va.h vaInitialize -lva
2746
2747 check_mathfunc exp2
2748 check_mathfunc exp2f
2749 check_mathfunc llrint
2750 check_mathfunc llrintf
2751 check_mathfunc log2
2752 check_mathfunc log2f
2753 check_mathfunc lrint
2754 check_mathfunc lrintf
2755 check_mathfunc round
2756 check_mathfunc roundf
2757 check_mathfunc truncf
2758
2759 # these are off by default, so fail if requested and not available
2760 enabled avisynth   && require2 vfw32 "windows.h vfw.h" AVIFileInit -lavifil32
2761 enabled frei0r     && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
2762 enabled libdirac   && add_cflags $(pkg-config --cflags dirac) &&
2763                       require  libdirac libdirac_decoder/dirac_parser.h dirac_decoder_init $(pkg-config --libs dirac) &&
2764                       require  libdirac libdirac_encoder/dirac_encoder.h dirac_encoder_init $(pkg-config --libs dirac)
2765 enabled libfaac    && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
2766 enabled libgsm     && require  libgsm gsm/gsm.h gsm_create -lgsm
2767 enabled libmp3lame && require  "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
2768 enabled libnut     && require  libnut libnut.h nut_demuxer_init -lnut
2769 enabled libopencore_amrnb  && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
2770 enabled libopencore_amrwb  && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
2771 enabled libopencv  && { check_lib opencv/cv.h cvCreateImageHeader $(pkg-config --libs opencv) ||
2772                         die "ERROR: libopencv not found"; }
2773 enabled libopenjpeg && require libopenjpeg openjpeg.h opj_version -lopenjpeg
2774 enabled librtmp    && { check_lib librtmp/rtmp.h RTMP_Socket $(pkg-config --libs librtmp) ||
2775                         die "ERROR: librtmp not found or RTMP_Socket() missing, librtmp version must be >= 2.2.f"; }
2776 enabled libschroedinger && add_cflags $(pkg-config --cflags schroedinger-1.0) &&
2777                            require libschroedinger schroedinger/schro.h schro_init $(pkg-config --libs schroedinger-1.0)
2778 enabled libspeex   && require  libspeex speex/speex.h speex_decoder_init -lspeex
2779 enabled libtheora  && require  libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
2780 enabled libvorbis  && require  libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
2781 enabled libvpx     && {
2782     enabled libvpx_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
2783                                 die "ERROR: libvpx decoder version must be >=0.9.1"; }
2784     enabled libvpx_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_enc_init_ver -lvpx ||
2785                                 die "ERROR: libvpx encoder version must be >=0.9.1"; } }
2786 enabled libx264    && require  libx264 x264.h x264_encoder_encode -lx264 &&
2787                       { check_cpp_condition x264.h "X264_BUILD >= 99" ||
2788                         die "ERROR: libx264 version must be >= 0.99."; }
2789 enabled libxavs    && require  libxavs xavs.h xavs_encoder_encode -lxavs
2790 enabled libxvid    && require  libxvid xvid.h xvid_global -lxvidcore
2791 enabled mlib       && require  mediaLib mlib_types.h mlib_VectorSub_S16_U8_Mod -lmlib
2792
2793 # libdc1394 check
2794 if enabled libdc1394; then
2795     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
2796         enable libdc1394_2; } ||
2797     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
2798         enable libdc1394_1; } ||
2799     die "ERROR: No version of libdc1394 found "
2800 fi
2801
2802 SDL_CONFIG="${cross_prefix}sdl-config"
2803 if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
2804     sdl_cflags=$("${SDL_CONFIG}" --cflags)
2805     sdl_libs=$("${SDL_CONFIG}" --libs)
2806     check_func_headers SDL.h SDL_Init $sdl_cflags $sdl_libs &&
2807     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
2808     enable sdl &&
2809     check_struct SDL.h SDL_VideoInfo current_w $sdl_cflags && enable sdl_video_size
2810 fi
2811
2812 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
2813
2814 if enabled network; then
2815     check_type "sys/types.h sys/socket.h" socklen_t
2816     check_type netdb.h "struct addrinfo"
2817     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
2818     check_type netinet/in.h "struct sockaddr_in6"
2819     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
2820     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
2821     # Prefer arpa/inet.h over winsock2
2822     if check_header arpa/inet.h ; then
2823         check_func closesocket
2824     elif check_header winsock2.h ; then
2825         check_func_headers winsock2.h closesocket -lws2 && \
2826             network_extralibs="-lws2" || \
2827         { check_func_headers winsock2.h closesocket -lws2_32 && \
2828             network_extralibs="-lws2_32"; }
2829         check_type ws2tcpip.h socklen_t
2830         check_type ws2tcpip.h "struct addrinfo"
2831         check_type ws2tcpip.h "struct ipv6_mreq"
2832         check_type ws2tcpip.h "struct sockaddr_in6"
2833         check_type ws2tcpip.h "struct sockaddr_storage"
2834         check_struct winsock2.h "struct sockaddr" sa_len
2835     else
2836         disable network
2837     fi
2838 fi
2839
2840 check_header linux/videodev.h
2841 check_header linux/videodev2.h
2842 check_header sys/videoio.h
2843
2844 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
2845 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
2846 # w32api 3.12 had it defined wrong
2847 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
2848
2849 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
2850 { check_header dev/bktr/ioctl_meteor.h &&
2851   check_header dev/bktr/ioctl_bt848.h; } ||
2852 { check_header machine/ioctl_meteor.h &&
2853   check_header machine/ioctl_bt848.h; } ||
2854 { check_header dev/video/meteor/ioctl_meteor.h &&
2855   check_header dev/video/bktr/ioctl_bt848.h; } ||
2856 check_header dev/ic/bt8xx.h
2857
2858 check_header sys/soundcard.h
2859 check_header soundcard.h
2860
2861 enabled_any alsa_indev alsa_outdev && check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
2862
2863 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack
2864
2865 enabled x11grab                         &&
2866 check_header X11/Xlib.h                 &&
2867 check_header X11/extensions/XShm.h      &&
2868 check_header X11/extensions/Xfixes.h    &&
2869 check_func XOpenDisplay -lX11           &&
2870 check_func XShmCreateImage -lX11 -lXext &&
2871 check_func XFixesGetCursorImage -lX11 -lXext -lXfixes
2872
2873 if ! disabled vdpau && enabled vdpau_vdpau_h; then
2874 check_cpp_condition \
2875     vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
2876     { echolog "Please upgrade to libvdpau >= 0.2 if you would like vdpau support." &&
2877       disable vdpau; }
2878 fi
2879
2880 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
2881
2882 # add some useful compiler flags if supported
2883 check_cflags -Wdeclaration-after-statement
2884 check_cflags -Wall
2885 check_cflags -Wno-parentheses
2886 check_cflags -Wno-switch
2887 check_cflags -Wdisabled-optimization
2888 check_cflags -Wpointer-arith
2889 check_cflags -Wredundant-decls
2890 check_cflags -Wno-pointer-sign
2891 check_cflags -Wcast-qual
2892 check_cflags -Wwrite-strings
2893 check_cflags -Wtype-limits
2894 check_cflags -Wundef
2895 check_cflags -Wmissing-prototypes
2896 enabled extra_warnings && check_cflags -Winline
2897
2898 # add some linker flags
2899 check_ldflags -Wl,--warn-common
2900 check_ldflags -Wl,--as-needed
2901 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)/libavcore -Wl,-rpath-link,\$(BUILD_ROOT)/libavutil'
2902 check_ldflags -Wl,-Bsymbolic
2903
2904 echo "X{};" > $TMPV
2905 if test_ldflags -Wl,--version-script,$TMPV; then
2906     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
2907     check_cc <<EOF && enable symver_asm_label
2908 void ff_foo(void) __asm__ ("av_foo@VERSION");
2909 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
2910 EOF
2911     check_cc <<EOF && enable symver_gnu_asm
2912 __asm__(".symver ff_foo,av_foo@VERSION");
2913 void ff_foo(void) {}
2914 EOF
2915 fi
2916
2917 if enabled small; then
2918     add_cflags $size_cflags
2919     optimizations="small"
2920 elif enabled optimizations; then
2921     add_cflags $speed_cflags
2922 else
2923     add_cflags $noopt_cflags
2924 fi
2925 check_cflags -fno-math-errno
2926 check_cflags -fno-signed-zeros
2927
2928 if enabled icc; then
2929     # Just warnings, no remarks
2930     check_cflags -w1
2931     # -wd: Disable following warnings
2932     # 144, 167, 556: -Wno-pointer-sign
2933     # 10006: ignoring unknown option -fno-signed-zeros
2934     # 10148: ignoring unknown option -Wno-parentheses
2935     # 10156: ignoring option '-W'; no argument required
2936     check_cflags -wd144,167,556,10006,10148,10156
2937     # 11030: Warning unknown option --as-needed
2938     # 10156: ignoring option '-export'; no argument required
2939     check_ldflags -wd10156,11030
2940     # Allow to compile with optimizations
2941     check_ldflags -march=$cpu
2942     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
2943     enable ebp_available
2944     if enabled x86_32; then
2945         test ${icc_version%%.*} -ge 11 && \
2946             check_cflags -falign-stack=maintain-16-byte || \
2947             disable aligned_stack
2948     fi
2949 elif enabled ccc; then
2950     # disable some annoying warnings
2951     add_cflags -msg_disable cvtu32to64
2952     add_cflags -msg_disable embedcomment
2953     add_cflags -msg_disable needconstext
2954     add_cflags -msg_disable nomainieee
2955     add_cflags -msg_disable ptrmismatch1
2956     add_cflags -msg_disable unreachcode
2957 elif enabled gcc; then
2958     check_cflags -fno-tree-vectorize
2959     check_cflags -Werror=implicit-function-declaration
2960     check_cflags -Werror=missing-prototypes
2961 elif enabled llvm_gcc; then
2962     check_cflags -mllvm -stack-alignment=16
2963 elif enabled clang; then
2964     check_cflags -mllvm -stack-alignment=16
2965     check_cflags -Qunused-arguments
2966 elif enabled armcc; then
2967     # 2523: use of inline assembler is deprecated
2968     add_cflags -W${armcc_opt},--diag_suppress=2523
2969     add_cflags -W${armcc_opt},--diag_suppress=1207
2970 elif enabled tms470; then
2971     add_cflags -pds=824 -pds=837
2972 fi
2973
2974 enabled_any $THREADS_LIST      && enable threads
2975
2976 check_deps $CONFIG_LIST       \
2977            $CONFIG_EXTRA      \
2978            $HAVE_LIST         \
2979            $DECODER_LIST      \
2980            $ENCODER_LIST      \
2981            $HWACCEL_LIST      \
2982            $PARSER_LIST       \
2983            $BSF_LIST          \
2984            $DEMUXER_LIST      \
2985            $MUXER_LIST        \
2986            $FILTER_LIST       \
2987            $INDEV_LIST        \
2988            $OUTDEV_LIST       \
2989            $PROTOCOL_LIST     \
2990            $ACODEC_TESTS      \
2991            $VCODEC_TESTS      \
2992            $LAVF_TESTS        \
2993            $LAVFI_TESTS       \
2994            $SEEK_TESTS        \
2995
2996 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
2997
2998 echo "install prefix            $prefix"
2999 echo "source path               $source_path"
3000 echo "C compiler                $cc"
3001 echo "ARCH                      $arch ($cpu)"
3002 if test "$build_suffix" != ""; then
3003     echo "build suffix              $build_suffix"
3004 fi
3005 if test "$extra_version" != ""; then
3006     echo "version string suffix     $extra_version"
3007 fi
3008 echo "big-endian                ${bigendian-no}"
3009 echo "runtime cpu detection     ${runtime_cpudetect-no}"
3010 if enabled x86; then
3011     echo "yasm                      ${yasm-no}"
3012     echo "MMX enabled               ${mmx-no}"
3013     echo "MMX2 enabled              ${mmx2-no}"
3014     echo "3DNow! enabled            ${amd3dnow-no}"
3015     echo "3DNow! extended enabled   ${amd3dnowext-no}"
3016     echo "SSE enabled               ${sse-no}"
3017     echo "SSSE3 enabled             ${ssse3-no}"
3018     echo "CMOV enabled              ${cmov-no}"
3019     echo "CMOV is fast              ${fast_cmov-no}"
3020     echo "EBX available             ${ebx_available-no}"
3021     echo "EBP available             ${ebp_available-no}"
3022     echo "10 operands supported     ${ten_operands-no}"
3023 fi
3024 if enabled arm; then
3025     echo "ARMv5TE enabled           ${armv5te-no}"
3026     echo "ARMv6 enabled             ${armv6-no}"
3027     echo "ARMv6T2 enabled           ${armv6t2-no}"
3028     echo "ARM VFP enabled           ${armvfp-no}"
3029     echo "IWMMXT enabled            ${iwmmxt-no}"
3030     echo "NEON enabled              ${neon-no}"
3031 fi
3032 if enabled mips; then
3033     echo "MMI enabled               ${mmi-no}"
3034 fi
3035 if enabled ppc; then
3036     echo "AltiVec enabled           ${altivec-no}"
3037     echo "PPC 4xx optimizations     ${ppc4xx-no}"
3038     echo "dcbzl available           ${dcbzl-no}"
3039 fi
3040 if enabled sparc; then
3041     echo "VIS enabled               ${vis-no}"
3042 fi
3043 echo "debug symbols             ${debug-no}"
3044 echo "strip symbols             ${stripping-no}"
3045 echo "optimizations             ${optimizations-no}"
3046 echo "static                    ${static-no}"
3047 echo "shared                    ${shared-no}"
3048 echo "postprocessing support    ${postproc-no}"
3049 echo "new filter support        ${avfilter-no}"
3050 echo "network support           ${network-no}"
3051 echo "threading support         ${thread_type-no}"
3052 echo "SDL support               ${sdl-no}"
3053 echo "Sun medialib support      ${mlib-no}"
3054 echo "AVISynth enabled          ${avisynth-no}"
3055 echo "frei0r enabled            ${frei0r-no}"
3056 echo "libdc1394 support         ${libdc1394-no}"
3057 echo "libdirac enabled          ${libdirac-no}"
3058 echo "libfaac enabled           ${libfaac-no}"
3059 echo "libgsm enabled            ${libgsm-no}"
3060 echo "libmp3lame enabled        ${libmp3lame-no}"
3061 echo "libnut enabled            ${libnut-no}"
3062 echo "libopencore-amrnb support ${libopencore_amrnb-no}"
3063 echo "libopencore-amrwb support ${libopencore_amrwb-no}"
3064 echo "libopencv support         ${libopencv-no}"
3065 echo "libopenjpeg enabled       ${libopenjpeg-no}"
3066 echo "librtmp enabled           ${librtmp-no}"
3067 echo "libschroedinger enabled   ${libschroedinger-no}"
3068 echo "libspeex enabled          ${libspeex-no}"
3069 echo "libtheora enabled         ${libtheora-no}"
3070 echo "libvorbis enabled         ${libvorbis-no}"
3071 echo "libvpx enabled            ${libvpx-no}"
3072 echo "libx264 enabled           ${libx264-no}"
3073 echo "libxavs enabled           ${libxavs-no}"
3074 echo "libxvid enabled           ${libxvid-no}"
3075 echo "zlib enabled              ${zlib-no}"
3076 echo "bzlib enabled             ${bzlib-no}"
3077 echo
3078
3079 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
3080     echo "Enabled ${type}s:"
3081     eval list=\$$(toupper $type)_LIST
3082     print_enabled '_*' $list | sort | pr -3 -t
3083     echo