path64/open64: filter out unsupported flags
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken Libav."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 show_help(){
58 cat <<EOF
59 Usage: configure [options]
60 Options: [defaults in brackets after descriptions]
61
62 Standard options:
63   --help                   print this message
64   --logfile=FILE           log tests and output to FILE [config.log]
65   --disable-logging        do not log configure debug information
66   --prefix=PREFIX          install in PREFIX [$prefix]
67   --bindir=DIR             install binaries in DIR [PREFIX/bin]
68   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
69   --libdir=DIR             install libs in DIR [PREFIX/lib]
70   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
71   --incdir=DIR             install includes in DIR [PREFIX/include]
72   --mandir=DIR             install man page in DIR [PREFIX/share/man]
73
74 Configuration options:
75   --disable-static         do not build static libraries [no]
76   --enable-shared          build shared libraries [no]
77   --enable-gpl             allow use of GPL code, the resulting libs
78                            and binaries will be under GPL [no]
79   --enable-version3        upgrade (L)GPL to version 3 [no]
80   --enable-nonfree         allow use of nonfree code, the resulting libs
81                            and binaries will be unredistributable [no]
82   --disable-doc            do not build documentation
83   --disable-ffmpeg         disable ffmpeg build
84   --disable-ffplay         disable ffplay build
85   --disable-ffprobe        disable ffprobe build
86   --disable-ffserver       disable ffserver build
87   --disable-avdevice       disable libavdevice build
88   --disable-avcodec        disable libavcodec build
89   --disable-avformat       disable libavformat build
90   --disable-swscale        disable libswscale build
91   --disable-postproc       disable libpostproc build
92   --disable-avfilter       disable video filter support [no]
93   --disable-pthreads       disable pthreads [auto]
94   --enable-w32threads      use Win32 threads [no]
95   --enable-x11grab         enable X11 grabbing [no]
96   --disable-network        disable network support [no]
97   --enable-gray            enable full grayscale support (slower color)
98   --disable-swscale-alpha  disable alpha channel support in swscale
99   --disable-fastdiv        disable table-based division
100   --enable-small           optimize for size instead of speed
101   --disable-aandct         disable AAN DCT code
102   --disable-dct            disable DCT code
103   --disable-fft            disable FFT code
104   --disable-golomb         disable Golomb code
105   --disable-huffman        disable Huffman code
106   --disable-lpc            disable LPC code
107   --disable-mdct           disable MDCT code
108   --disable-rdft           disable RDFT code
109   --enable-vaapi           enable VAAPI code
110   --enable-vdpau           enable VDPAU code
111   --disable-dxva2          disable DXVA2 code
112   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
113   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
114   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
115   --disable-everything     disable all components listed below
116   --disable-encoder=NAME   disable encoder NAME
117   --enable-encoder=NAME    enable encoder NAME
118   --disable-encoders       disable all encoders
119   --disable-decoder=NAME   disable decoder NAME
120   --enable-decoder=NAME    enable decoder NAME
121   --disable-decoders       disable all decoders
122   --disable-hwaccel=NAME   disable hwaccel NAME
123   --enable-hwaccel=NAME    enable hwaccel NAME
124   --disable-hwaccels       disable all hwaccels
125   --disable-muxer=NAME     disable muxer NAME
126   --enable-muxer=NAME      enable muxer NAME
127   --disable-muxers         disable all muxers
128   --disable-demuxer=NAME   disable demuxer NAME
129   --enable-demuxer=NAME    enable demuxer NAME
130   --disable-demuxers       disable all demuxers
131   --enable-parser=NAME     enable parser NAME
132   --disable-parser=NAME    disable parser NAME
133   --disable-parsers        disable all parsers
134   --enable-bsf=NAME        enable bitstream filter NAME
135   --disable-bsf=NAME       disable bitstream filter NAME
136   --disable-bsfs           disable all bitstream filters
137   --enable-protocol=NAME   enable protocol NAME
138   --disable-protocol=NAME  disable protocol NAME
139   --disable-protocols      disable all protocols
140   --disable-indev=NAME     disable input device NAME
141   --disable-outdev=NAME    disable output device NAME
142   --disable-indevs         disable input devices
143   --disable-outdevs        disable output devices
144   --disable-devices        disable all devices
145   --enable-filter=NAME     enable filter NAME
146   --disable-filter=NAME    disable filter NAME
147   --disable-filters        disable all filters
148   --list-decoders          show all available decoders
149   --list-encoders          show all available encoders
150   --list-hwaccels          show all available hardware accelerators
151   --list-muxers            show all available muxers
152   --list-demuxers          show all available demuxers
153   --list-parsers           show all available parsers
154   --list-protocols         show all available protocols
155   --list-bsfs              show all available bitstream filters
156   --list-indevs            show all available input devices
157   --list-outdevs           show all available output devices
158   --list-filters           show all available filters
159
160 External library support:
161   --enable-avisynth        enable reading of AVISynth script files [no]
162   --enable-bzlib           enable bzlib [autodetect]
163   --enable-frei0r          enable frei0r video filtering
164   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
165   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
166   --enable-libopencv       enable video filtering via libopencv [no]
167   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
168                            and libraw1394 [no]
169   --enable-libdirac        enable Dirac support via libdirac [no]
170   --enable-libfaac         enable FAAC support via libfaac [no]
171   --enable-libfreetype     enable libfreetype [no]
172   --enable-libgsm          enable GSM support via libgsm [no]
173   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
174   --enable-libnut          enable NUT (de)muxing via libnut,
175                            native (de)muxer exists [no]
176   --enable-libopenjpeg     enable JPEG 2000 decoding via OpenJPEG [no]
177   --enable-librtmp         enable RTMP[E] support via librtmp [no]
178   --enable-libschroedinger enable Dirac support via libschroedinger [no]
179   --enable-libspeex        enable Speex decoding via libspeex [no]
180   --enable-libtheora       enable Theora encoding via libtheora [no]
181   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
182   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
183   --enable-libvorbis       enable Vorbis encoding via libvorbis,
184                            native implementation exists [no]
185   --enable-libvpx          enable VP8 support via libvpx [no]
186   --enable-libx264         enable H.264 encoding via x264 [no]
187   --enable-libxavs         enable AVS encoding via xavs [no]
188   --enable-libxvid         enable Xvid encoding via xvidcore,
189                            native MPEG-4/Xvid encoder exists [no]
190   --enable-mlib            enable Sun medialib [no]
191   --enable-zlib            enable zlib [autodetect]
192
193 Advanced options (experts only):
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-avx            disable AVX optimizations
227   --disable-armv5te        disable armv5te optimizations
228   --disable-armv6          disable armv6 optimizations
229   --disable-armv6t2        disable armv6t2 optimizations
230   --disable-armvfp         disable ARM VFP optimizations
231   --disable-iwmmxt         disable iwmmxt optimizations
232   --disable-mmi            disable MMI optimizations
233   --disable-neon           disable neon optimizations
234   --disable-vis            disable VIS optimizations
235   --disable-yasm           disable use of yasm assembler
236   --enable-pic             build position-independent code
237   --malloc-prefix=PFX      prefix malloc and related names with PFX
238   --enable-sram            allow use of on-chip SRAM
239   --disable-symver         disable symbol versioning
240
241 Developer options (useful when working on Libav itself):
242   --disable-debug          disable debugging symbols
243   --enable-debug=LEVEL     set the debug level [$debuglevel]
244   --disable-optimizations  disable compiler optimizations
245   --enable-extra-warnings  enable more compiler warnings
246   --samples=PATH           location of test samples for FATE, if not set use
247                            \$FATE_SAMPLES at make invocation time.
248
249 NOTE: Object files are built at the place where configure is launched.
250 EOF
251   exit 0
252 }
253
254 quotes='""'
255
256 log(){
257     echo "$@" >> $logfile
258 }
259
260 log_file(){
261     log BEGIN $1
262     pr -n -t $1 >> $logfile
263     log END $1
264 }
265
266 echolog(){
267     log "$@"
268     echo "$@"
269 }
270
271 warn(){
272     log "WARNING: $*"
273     WARNINGS="${WARNINGS}WARNING: $*\n"
274 }
275
276 die(){
277     echolog "$@"
278     cat <<EOF
279
280 If you think configure made a mistake, make sure you are using the latest
281 version from Git.  If the latest version fails, report the problem to the
282 libav-user@libav.org mailing list or IRC #libav on irc.freenode.net.
283 EOF
284     if disabled logging; then
285         cat <<EOF
286 Rerun configure with logging enabled (do not use --disable-logging), and
287 include the log this produces with your report.
288 EOF
289     else
290 cat <<EOF
291 Include the log file "$logfile" produced by configure as this will help
292 solving the problem.
293 EOF
294     fi
295     exit 1
296 }
297
298 # Avoid locale weirdness, besides we really just want to translate ASCII.
299 toupper(){
300     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
301 }
302
303 tolower(){
304     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
305 }
306
307 c_escape(){
308     echo "$*" | sed 's/["\\]/\\\0/g'
309 }
310
311 sh_quote(){
312     v=$(echo "$1" | sed "s/'/'\\\\''/g")
313     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
314     echo "$v"
315 }
316
317 cleanws(){
318     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
319 }
320
321 filter(){
322     pat=$1
323     shift
324     for v; do
325         eval "case $v in $pat) echo $v ;; esac"
326     done
327 }
328
329 filter_out(){
330     pat=$1
331     shift
332     for v; do
333         eval "case $v in $pat) ;; *) echo $v ;; esac"
334     done
335 }
336
337 map(){
338     m=$1
339     shift
340     for v; do eval $m; done
341 }
342
343 set_all(){
344     value=$1
345     shift
346     for var in $*; do
347         eval $var=$value
348     done
349 }
350
351 set_weak(){
352     value=$1
353     shift
354     for var; do
355         eval : \${$var:=$value}
356     done
357 }
358
359 set_safe(){
360     var=$1
361     shift
362     eval $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')='$*'
363 }
364
365 get_safe(){
366     eval echo \$$(echo "$1" | sed 's/[^A-Za-z0-9_]/_/g')
367 }
368
369 pushvar(){
370     for var in $*; do
371         eval level=\${${var}_level:=0}
372         eval ${var}_${level}="\$$var"
373         eval ${var}_level=$(($level+1))
374     done
375 }
376
377 popvar(){
378     for var in $*; do
379         eval level=\${${var}_level:-0}
380         test $level = 0 && continue
381         eval level=$(($level-1))
382         eval $var="\${${var}_${level}}"
383         eval ${var}_level=$level
384         eval unset ${var}_${level}
385     done
386 }
387
388 enable(){
389     set_all yes $*
390 }
391
392 disable(){
393     set_all no $*
394 }
395
396 enable_weak(){
397     set_weak yes $*
398 }
399
400 disable_weak(){
401     set_weak no $*
402 }
403
404 enable_safe(){
405     for var; do
406         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
407     done
408 }
409
410 disable_safe(){
411     for var; do
412         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
413     done
414 }
415
416 do_enable_deep(){
417     for var; do
418         enabled $var && continue
419         eval sel="\$${var}_select"
420         eval sgs="\$${var}_suggest"
421         pushvar var sgs
422         enable_deep $sel
423         popvar sgs
424         enable_deep_weak $sgs
425         popvar var
426     done
427 }
428
429 enable_deep(){
430     do_enable_deep $*
431     enable $*
432 }
433
434 enable_deep_weak(){
435     do_enable_deep $*
436     enable_weak $*
437 }
438
439 enabled(){
440     test "${1#!}" = "$1" && op== || op=!=
441     eval test "x\$${1#!}" $op "xyes"
442 }
443
444 disabled(){
445     test "${1#!}" = "$1" && op== || op=!=
446     eval test "x\$${1#!}" $op "xno"
447 }
448
449 enabled_all(){
450     for opt; do
451         enabled $opt || return 1
452     done
453 }
454
455 disabled_all(){
456     for opt; do
457         disabled $opt || return 1
458     done
459 }
460
461 enabled_any(){
462     for opt; do
463         enabled $opt && return 0
464     done
465 }
466
467 disabled_any(){
468     for opt; do
469         disabled $opt && return 0
470     done
471     return 1
472 }
473
474 set_default(){
475     for opt; do
476         eval : \${$opt:=\$${opt}_default}
477     done
478 }
479
480 is_in(){
481     value=$1
482     shift
483     for var in $*; do
484         [ $var = $value ] && return 0
485     done
486     return 1
487 }
488
489 check_deps(){
490     for cfg; do
491         cfg="${cfg#!}"
492         enabled ${cfg}_checking && die "Circular dependency for $cfg."
493         disabled ${cfg}_checking && continue
494         enable ${cfg}_checking
495
496         eval dep_all="\$${cfg}_deps"
497         eval dep_any="\$${cfg}_deps_any"
498         eval dep_sel="\$${cfg}_select"
499         eval dep_sgs="\$${cfg}_suggest"
500         eval dep_ifa="\$${cfg}_if"
501         eval dep_ifn="\$${cfg}_if_any"
502
503         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
504         check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
505         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
506
507         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
508         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
509         enabled_all  $dep_all || disable $cfg
510         enabled_any  $dep_any || disable $cfg
511         disabled_any $dep_sel && disable $cfg
512
513         if enabled $cfg; then
514             eval dep_extralibs="\$${cfg}_extralibs"
515             test -n "$dep_extralibs" && add_extralibs $dep_extralibs
516             enable_deep $dep_sel
517             enable_deep_weak $dep_sgs
518         fi
519
520         disable ${cfg}_checking
521     done
522 }
523
524 print_config_h(){
525     enabled $1 && v=1 || v=0
526     echo "#define $2 $v"
527 }
528
529 print_config_mak(){
530     enabled $1 && v= || v=!
531     echo "$v$2=yes"
532 }
533
534 print_config_asm(){
535     enabled $1 && echo "%define $2"
536 }
537
538 print_config(){
539     pfx=$1
540     files=$2
541     shift 2
542     for cfg; do
543         ucname="$(toupper $cfg)"
544         for f in $files; do
545             "print_config_${f##*.}" $cfg ${pfx}${ucname} >>$f
546         done
547     done
548 }
549
550 print_enabled(){
551     test "$1" = -n && end=" " && shift || end="\n"
552     suf=$1
553     shift
554     for v; do
555         enabled $v && printf "%s$end" ${v%$suf};
556     done
557 }
558
559 append(){
560     var=$1
561     shift
562     eval "$var=\"\$$var $*\""
563 }
564
565 prepend(){
566     var=$1
567     shift
568     eval "$var=\"$* \$$var\""
569 }
570
571 add_cppflags(){
572     append CPPFLAGS $($filter_cppflags "$@")
573 }
574
575 add_cflags(){
576     append CFLAGS $($filter_cflags "$@")
577 }
578
579 add_asflags(){
580     append ASFLAGS $($filter_asflags "$@")
581 }
582
583 add_ldflags(){
584     append LDFLAGS "$@"
585 }
586
587 add_extralibs(){
588     prepend extralibs "$@"
589 }
590
591 check_cmd(){
592     log "$@"
593     "$@" >> $logfile 2>&1
594 }
595
596 check_cc(){
597     log check_cc "$@"
598     cat > $TMPC
599     log_file $TMPC
600     check_cmd $cc $CPPFLAGS $CFLAGS "$@" -c -o $TMPO $TMPC
601 }
602
603 check_cpp(){
604     log check_cpp "$@"
605     cat > $TMPC
606     log_file $TMPC
607     check_cmd $cc $CPPFLAGS $CFLAGS "$@" -E -o $TMPO $TMPC
608 }
609
610 check_as(){
611     log check_as "$@"
612     cat > $TMPC
613     log_file $TMPC
614     check_cmd $as $CPPFLAGS $ASFLAGS "$@" -c -o $TMPO $TMPC
615 }
616
617 check_asm(){
618     log check_asm "$@"
619     name="$1"
620     code="$2"
621     shift 2
622     disable $name
623     check_as "$@" <<EOF && enable $name
624 void foo(void){ __asm__ volatile($code); }
625 EOF
626 }
627
628 check_yasm(){
629     log check_yasm "$@"
630     echo "$1" > $TMPS
631     log_file $TMPS
632     shift 1
633     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
634 }
635
636 check_ld(){
637     log check_ld "$@"
638     flags=''
639     libs=''
640     for f; do
641         test "${f}" = "${f#-l}" && flags="$flags $f" || libs="$libs $f"
642     done
643     check_cc $($filter_cflags $flags) || return
644     check_cmd $ld $LDFLAGS $flags -o $TMPE $TMPO $libs $extralibs
645 }
646
647 check_cppflags(){
648     log check_cppflags "$@"
649     set -- $($filter_cppflags "$@")
650     check_cc "$@" <<EOF && append CPPFLAGS "$@"
651 int x;
652 EOF
653 }
654
655 check_cflags(){
656     log check_cflags "$@"
657     set -- $($filter_cflags "$@")
658     check_cc "$@" <<EOF && append CFLAGS "$@"
659 int x;
660 EOF
661 }
662
663 test_ldflags(){
664     log test_ldflags "$@"
665     check_ld "$@" <<EOF
666 int main(void){ return 0; }
667 EOF
668 }
669
670 check_ldflags(){
671     log check_ldflags "$@"
672     test_ldflags "$@" && add_ldflags "$@"
673 }
674
675 check_header(){
676     log check_header "$@"
677     header=$1
678     shift
679     disable_safe $header
680     check_cpp "$@" <<EOF && enable_safe $header
681 #include <$header>
682 int x;
683 EOF
684 }
685
686 check_func(){
687     log check_func "$@"
688     func=$1
689     shift
690     disable $func
691     check_ld "$@" <<EOF && enable $func
692 extern int $func();
693 int main(void){ $func(); }
694 EOF
695 }
696
697 check_mathfunc(){
698     log check_mathfunc "$@"
699     func=$1
700     shift
701     disable $func
702     check_ld "$@" <<EOF && enable $func
703 #include <math.h>
704 float foo(float f) { return $func(f); }
705 int main(void){ return 0; }
706 EOF
707 }
708
709 check_func_headers(){
710     log check_func_headers "$@"
711     headers=$1
712     funcs=$2
713     shift 2
714     {
715         for hdr in $headers; do
716             echo "#include <$hdr>"
717         done
718         for func in $funcs; do
719             echo "long check_$func(void) { return (long) $func; }"
720         done
721         echo "int main(void) { return 0; }"
722     } | check_ld "$@" && enable $funcs && enable_safe $headers
723 }
724
725 check_cpp_condition(){
726     log check_cpp_condition "$@"
727     header=$1
728     condition=$2
729     shift 2
730     check_cpp $($filter_cppflags "$@") <<EOF
731 #include <$header>
732 #if !($condition)
733 #error "unsatisfied condition: $condition"
734 #endif
735 EOF
736 }
737
738 check_lib(){
739     log check_lib "$@"
740     header="$1"
741     func="$2"
742     shift 2
743     check_header $header && check_func $func "$@" && add_extralibs "$@"
744 }
745
746 check_lib2(){
747     log check_lib2 "$@"
748     headers="$1"
749     funcs="$2"
750     shift 2
751     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
752 }
753
754 check_pkg_config(){
755     log check_pkg_config "$@"
756     pkg="$1"
757     headers="$2"
758     funcs="$3"
759     shift 3
760     $pkg_config --exists $pkg || return
761     pkg_cflags=$($pkg_config --cflags $pkg)
762     pkg_libs=$($pkg_config --libs $pkg)
763     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
764         set_safe ${pkg}_cflags $pkg_cflags   &&
765         set_safe ${pkg}_libs   $pkg_libs
766 }
767
768 check_exec(){
769     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
770 }
771
772 check_exec_crash(){
773     code=$(cat)
774
775     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
776     # are safe but may not be available everywhere.  Thus we use
777     # raise(SIGTERM) instead.  The check is run in a subshell so we
778     # can redirect the "Terminated" message from the shell.  SIGBUS
779     # is not defined by standard C so it is used conditionally.
780
781     (check_exec "$@") >> $logfile 2>&1 <<EOF
782 #include <signal.h>
783 static void sighandler(int sig){
784     raise(SIGTERM);
785 }
786 int main(void){
787     signal(SIGILL, sighandler);
788     signal(SIGFPE, sighandler);
789     signal(SIGSEGV, sighandler);
790 #ifdef SIGBUS
791     signal(SIGBUS, sighandler);
792 #endif
793     { $code }
794 }
795 EOF
796 }
797
798 check_type(){
799     log check_type "$@"
800     headers=$1
801     type=$2
802     shift 2
803     disable_safe "$type"
804     incs=""
805     for hdr in $headers; do
806         incs="$incs
807 #include <$hdr>"
808     done
809     check_cc "$@" <<EOF && enable_safe "$type"
810 $incs
811 $type v;
812 EOF
813 }
814
815 check_struct(){
816     log check_type "$@"
817     headers=$1
818     struct=$2
819     member=$3
820     shift 3
821     disable_safe "${struct}_${member}"
822     incs=""
823     for hdr in $headers; do
824         incs="$incs
825 #include <$hdr>"
826     done
827     check_cc "$@" <<EOF && enable_safe "${struct}_${member}"
828 $incs
829 const void *p = &(($struct *)0)->$member;
830 EOF
831 }
832
833 require(){
834     name="$1"
835     header="$2"
836     func="$3"
837     shift 3
838     check_lib $header $func "$@" || die "ERROR: $name not found"
839 }
840
841 require2(){
842     name="$1"
843     headers="$2"
844     func="$3"
845     shift 3
846     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
847 }
848
849 require_pkg_config(){
850     pkg="$1"
851     check_pkg_config "$@" || die "ERROR: $pkg not found"
852     add_cflags    $(get_safe ${pkg}_cflags)
853     add_extralibs $(get_safe ${pkg}_libs)
854 }
855
856 check_host_cc(){
857     log check_host_cc "$@"
858     cat > $TMPC
859     log_file $TMPC
860     check_cmd $host_cc $host_cflags "$@" -c -o $TMPO $TMPC
861 }
862
863 check_host_cflags(){
864     log check_host_cflags "$@"
865     check_host_cc "$@" <<EOF && append host_cflags "$@"
866 int x;
867 EOF
868 }
869
870 apply(){
871     file=$1
872     shift
873     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
874 }
875
876 cp_if_changed(){
877     cmp -s "$1" "$2" &&
878         echo "$2 is unchanged" ||
879         cp -f "$1" "$2"
880 }
881
882 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
883 # system-dependent things.
884
885 COMPONENT_LIST="
886     bsfs
887     decoders
888     demuxers
889     encoders
890     filters
891     hwaccels
892     indevs
893     muxers
894     outdevs
895     parsers
896     protocols
897 "
898
899 CONFIG_LIST="
900     $COMPONENT_LIST
901     aandct
902     ac3dsp
903     avcodec
904     avdevice
905     avfilter
906     avformat
907     avisynth
908     bzlib
909     dct
910     doc
911     dwt
912     dxva2
913     fastdiv
914     ffmpeg
915     ffplay
916     ffprobe
917     ffserver
918     fft
919     frei0r
920     golomb
921     gpl
922     gray
923     h264dsp
924     h264pred
925     hardcoded_tables
926     huffman
927     libdc1394
928     libdirac
929     libfaac
930     libfreetype
931     libgsm
932     libmp3lame
933     libnut
934     libopencore_amrnb
935     libopencore_amrwb
936     libopencv
937     libopenjpeg
938     librtmp
939     libschroedinger
940     libspeex
941     libtheora
942     libvo_aacenc
943     libvo_amrwbenc
944     libvorbis
945     libvpx
946     libx264
947     libxavs
948     libxvid
949     lpc
950     lsp
951     mdct
952     memalign_hack
953     mlib
954     mpegaudiodsp
955     network
956     nonfree
957     pic
958     postproc
959     rdft
960     rtpdec
961     runtime_cpudetect
962     shared
963     sinewin
964     small
965     sram
966     static
967     swscale
968     swscale_alpha
969     vaapi
970     vdpau
971     version3
972     x11grab
973     zlib
974 "
975
976 THREADS_LIST='
977     pthreads
978     w32threads
979 '
980
981 ARCH_LIST='
982     alpha
983     arm
984     avr32
985     avr32_ap
986     avr32_uc
987     bfin
988     ia64
989     m68k
990     mips
991     mips64
992     parisc
993     ppc
994     ppc64
995     s390
996     sh4
997     sparc
998     sparc64
999     tomi
1000     x86
1001     x86_32
1002     x86_64
1003 '
1004
1005 ARCH_EXT_LIST='
1006     altivec
1007     amd3dnow
1008     amd3dnowext
1009     armv5te
1010     armv6
1011     armv6t2
1012     armvfp
1013     avx
1014     iwmmxt
1015     mmi
1016     mmx
1017     mmx2
1018     neon
1019     ppc4xx
1020     sse
1021     ssse3
1022     vfpv3
1023     vis
1024 '
1025
1026 HAVE_LIST_PUB='
1027     bigendian
1028     fast_unaligned
1029 '
1030
1031 HAVE_LIST="
1032     $ARCH_EXT_LIST
1033     $HAVE_LIST_PUB
1034     $THREADS_LIST
1035     aligned_stack
1036     alsa_asoundlib_h
1037     altivec_h
1038     arpa_inet_h
1039     attribute_may_alias
1040     attribute_packed
1041     bswap
1042     closesocket
1043     cmov
1044     dcbzl
1045     dev_bktr_ioctl_bt848_h
1046     dev_bktr_ioctl_meteor_h
1047     dev_ic_bt8xx_h
1048     dev_video_meteor_ioctl_meteor_h
1049     dev_video_bktr_ioctl_bt848_h
1050     dlfcn_h
1051     dlopen
1052     dos_paths
1053     ebp_available
1054     ebx_available
1055     exp2
1056     exp2f
1057     fast_64bit
1058     fast_clz
1059     fast_cmov
1060     fcntl
1061     fork
1062     getaddrinfo
1063     gethrtime
1064     GetProcessMemoryInfo
1065     GetProcessTimes
1066     getrusage
1067     gnu_as
1068     struct_rusage_ru_maxrss
1069     ibm_asm
1070     inet_aton
1071     inline_asm
1072     isatty
1073     ldbrx
1074     libdc1394_1
1075     libdc1394_2
1076     llrint
1077     llrintf
1078     local_aligned_16
1079     local_aligned_8
1080     localtime_r
1081     log2
1082     log2f
1083     loongson
1084     lrint
1085     lrintf
1086     lzo1x_999_compress
1087     machine_ioctl_bt848_h
1088     machine_ioctl_meteor_h
1089     malloc_h
1090     MapViewOfFile
1091     memalign
1092     mkstemp
1093     mmap
1094     pld
1095     posix_memalign
1096     round
1097     roundf
1098     sdl
1099     sdl_video_size
1100     setmode
1101     sndio_h
1102     socklen_t
1103     soundcard_h
1104     poll_h
1105     setrlimit
1106     strerror_r
1107     strtok_r
1108     struct_addrinfo
1109     struct_ipv6_mreq
1110     struct_sockaddr_in6
1111     struct_sockaddr_sa_len
1112     struct_sockaddr_storage
1113     symver
1114     symver_gnu_asm
1115     symver_asm_label
1116     sys_mman_h
1117     sys_resource_h
1118     sys_select_h
1119     sys_soundcard_h
1120     sys_videoio_h
1121     ten_operands
1122     threads
1123     trunc
1124     truncf
1125     vfp_args
1126     VirtualAlloc
1127     winsock2_h
1128     xform_asm
1129     xmm_clobbers
1130     yasm
1131 "
1132
1133 # options emitted with CONFIG_ prefix but not available on command line
1134 CONFIG_EXTRA="
1135     avutil
1136     gplv3
1137     lgplv3
1138 "
1139
1140 CMDLINE_SELECT="
1141     $ARCH_EXT_LIST
1142     $CONFIG_LIST
1143     $THREADS_LIST
1144     asm
1145     cross_compile
1146     debug
1147     extra_warnings
1148     logging
1149     optimizations
1150     symver
1151     yasm
1152 "
1153
1154 PATHS_LIST='
1155     bindir
1156     datadir
1157     incdir
1158     libdir
1159     mandir
1160     prefix
1161     shlibdir
1162 '
1163
1164 CMDLINE_SET="
1165     $PATHS_LIST
1166     ar
1167     arch
1168     as
1169     build_suffix
1170     cc
1171     cpu
1172     cross_prefix
1173     dep_cc
1174     extra_version
1175     host_cc
1176     host_cflags
1177     host_ldflags
1178     host_libs
1179     host_os
1180     ld
1181     logfile
1182     malloc_prefix
1183     nm
1184     pkg_config
1185     samples
1186     sysinclude
1187     sysroot
1188     target_exec
1189     target_os
1190     target_path
1191 "
1192
1193 CMDLINE_APPEND="
1194     extra_cflags
1195 "
1196
1197 # code dependency declarations
1198
1199 # architecture extensions
1200
1201 armv5te_deps="arm"
1202 armv6_deps="arm"
1203 armv6t2_deps="arm"
1204 armvfp_deps="arm"
1205 iwmmxt_deps="arm"
1206 neon_deps="arm"
1207 vfpv3_deps="armvfp"
1208
1209 mmi_deps="mips"
1210
1211 altivec_deps="ppc"
1212 ppc4xx_deps="ppc"
1213
1214 vis_deps="sparc"
1215
1216 x86_64_suggest="cmov fast_cmov"
1217 amd3dnow_deps="mmx"
1218 amd3dnowext_deps="amd3dnow"
1219 mmx_deps="x86"
1220 mmx2_deps="mmx"
1221 sse_deps="mmx"
1222 ssse3_deps="sse"
1223 avx_deps="ssse3"
1224
1225 aligned_stack_if_any="ppc x86"
1226 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1227 fast_clz_if_any="alpha armv5te avr32 mips ppc x86"
1228 fast_unaligned_if_any="armv6 ppc x86"
1229
1230 need_memalign="altivec neon sse"
1231 inline_asm_deps="!tms470"
1232
1233 symver_if_any="symver_asm_label symver_gnu_asm"
1234
1235 # subsystems
1236 dct_select="rdft"
1237 mdct_select="fft"
1238 rdft_select="fft"
1239 mpegaudiodsp_select="dct"
1240
1241 # decoders / encoders / hardware accelerators
1242 aac_decoder_select="mdct sinewin"
1243 aac_encoder_select="mdct sinewin"
1244 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1245 ac3_decoder_select="mdct ac3dsp ac3_parser"
1246 ac3_encoder_select="mdct ac3dsp"
1247 ac3_fixed_encoder_select="mdct ac3dsp"
1248 alac_encoder_select="lpc"
1249 amrnb_decoder_select="lsp"
1250 amrwb_decoder_select="lsp"
1251 atrac1_decoder_select="mdct sinewin"
1252 atrac3_decoder_select="mdct"
1253 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1254 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1255 cavs_decoder_select="golomb"
1256 cook_decoder_select="mdct sinewin"
1257 cscd_decoder_suggest="zlib"
1258 dca_decoder_select="mdct"
1259 dnxhd_encoder_select="aandct"
1260 dxa_decoder_select="zlib"
1261 eac3_decoder_select="ac3_decoder"
1262 eac3_encoder_select="mdct ac3dsp"
1263 eamad_decoder_select="aandct"
1264 eatgq_decoder_select="aandct"
1265 eatqi_decoder_select="aandct"
1266 ffv1_decoder_select="golomb"
1267 flac_decoder_select="golomb"
1268 flac_encoder_select="golomb lpc"
1269 flashsv_decoder_select="zlib"
1270 flashsv_encoder_select="zlib"
1271 flv_decoder_select="h263_decoder"
1272 flv_encoder_select="h263_encoder"
1273 fraps_decoder_select="huffman"
1274 h261_encoder_select="aandct"
1275 h263_decoder_select="h263_parser"
1276 h263_encoder_select="aandct"
1277 h263_vaapi_hwaccel_select="vaapi h263_decoder"
1278 h263i_decoder_select="h263_decoder"
1279 h263p_encoder_select="h263_encoder"
1280 h264_decoder_select="golomb h264dsp h264pred"
1281 h264_dxva2_hwaccel_deps="dxva2api_h"
1282 h264_dxva2_hwaccel_select="dxva2 h264_decoder"
1283 h264_vaapi_hwaccel_select="vaapi"
1284 h264_vdpau_decoder_select="vdpau h264_decoder"
1285 imc_decoder_select="fft mdct sinewin"
1286 jpegls_decoder_select="golomb"
1287 jpegls_encoder_select="golomb"
1288 ljpeg_encoder_select="aandct"
1289 loco_decoder_select="golomb"
1290 mjpeg_encoder_select="aandct"
1291 mlp_decoder_select="mlp_parser"
1292 mp1_decoder_select="mpegaudiodsp"
1293 mp2_decoder_select="mpegaudiodsp"
1294 mp3adu_decoder_select="mpegaudiodsp"
1295 mp3_decoder_select="mpegaudiodsp"
1296 mp3on4_decoder_select="mpegaudiodsp"
1297 mp1float_decoder_select="mpegaudiodsp"
1298 mp2float_decoder_select="mpegaudiodsp"
1299 mp3adufloat_decoder_select="mpegaudiodsp"
1300 mp3float_decoder_select="mpegaudiodsp"
1301 mp3on4float_decoder_select="mpegaudiodsp"
1302 mpeg1video_encoder_select="aandct"
1303 mpeg2video_encoder_select="aandct"
1304 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1305 mpeg4_encoder_select="h263_encoder"
1306 mpeg_vdpau_decoder_select="vdpau mpegvideo_decoder"
1307 mpeg1_vdpau_decoder_select="vdpau mpeg1video_decoder"
1308 mpeg2_dxva2_hwaccel_deps="dxva2api_h"
1309 mpeg2_dxva2_hwaccel_select="dxva2 mpeg2video_decoder"
1310 mpeg2_vaapi_hwaccel_select="vaapi mpeg2video_decoder"
1311 mpeg4_vaapi_hwaccel_select="vaapi mpeg4_decoder"
1312 mpeg4_vdpau_decoder_select="vdpau mpeg4_decoder"
1313 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1314 mpeg_xvmc_decoder_select="mpegvideo_decoder"
1315 msmpeg4v1_decoder_select="h263_decoder"
1316 msmpeg4v1_encoder_select="h263_encoder"
1317 msmpeg4v2_decoder_select="h263_decoder"
1318 msmpeg4v2_encoder_select="h263_encoder"
1319 msmpeg4v3_decoder_select="h263_decoder"
1320 msmpeg4v3_encoder_select="h263_encoder"
1321 nellymoser_decoder_select="mdct sinewin"
1322 nellymoser_encoder_select="mdct sinewin"
1323 png_decoder_select="zlib"
1324 png_encoder_select="zlib"
1325 qcelp_decoder_select="lsp"
1326 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1327 ra_144_encoder_select="lpc"
1328 rv10_decoder_select="h263_decoder"
1329 rv10_encoder_select="h263_encoder"
1330 rv20_decoder_select="h263_decoder"
1331 rv20_encoder_select="h263_encoder"
1332 rv30_decoder_select="golomb h264pred"
1333 rv40_decoder_select="golomb h264pred"
1334 shorten_decoder_select="golomb"
1335 sipr_decoder_select="lsp"
1336 snow_decoder_select="dwt"
1337 snow_encoder_select="aandct dwt"
1338 svq1_encoder_select="aandct"
1339 svq3_decoder_select="golomb h264dsp h264pred"
1340 svq3_decoder_suggest="zlib"
1341 theora_decoder_select="vp3_decoder"
1342 tiff_decoder_suggest="zlib"
1343 tiff_encoder_suggest="zlib"
1344 truehd_decoder_select="mlp_decoder"
1345 tscc_decoder_select="zlib"
1346 twinvq_decoder_select="mdct lsp sinewin"
1347 vc1_decoder_select="h263_decoder"
1348 vc1_dxva2_hwaccel_deps="dxva2api_h DXVA_PictureParameters_wDecodedPictureIndex"
1349 vc1_dxva2_hwaccel_select="dxva2 vc1_decoder"
1350 vc1_vaapi_hwaccel_select="vaapi vc1_decoder"
1351 vc1_vdpau_decoder_select="vdpau vc1_decoder"
1352 vorbis_decoder_select="mdct"
1353 vorbis_encoder_select="mdct"
1354 vp6_decoder_select="huffman"
1355 vp6a_decoder_select="vp6_decoder"
1356 vp6f_decoder_select="vp6_decoder"
1357 vp8_decoder_select="h264pred"
1358 wmapro_decoder_select="mdct sinewin"
1359 wmav1_decoder_select="mdct sinewin"
1360 wmav1_encoder_select="mdct sinewin"
1361 wmav2_decoder_select="mdct sinewin"
1362 wmav2_encoder_select="mdct sinewin"
1363 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1364 wmv1_decoder_select="h263_decoder"
1365 wmv1_encoder_select="h263_encoder"
1366 wmv2_decoder_select="h263_decoder"
1367 wmv2_encoder_select="h263_encoder"
1368 wmv3_decoder_select="vc1_decoder"
1369 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1370 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1371 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
1372 zlib_decoder_select="zlib"
1373 zlib_encoder_select="zlib"
1374 zmbv_decoder_select="zlib"
1375 zmbv_encoder_select="zlib"
1376
1377 vaapi_deps="va_va_h"
1378 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1379
1380 # parsers
1381 h264_parser_select="golomb h264dsp h264pred"
1382
1383 # external libraries
1384 libdirac_decoder_deps="libdirac !libschroedinger"
1385 libdirac_encoder_deps="libdirac"
1386 libfaac_encoder_deps="libfaac"
1387 libgsm_decoder_deps="libgsm"
1388 libgsm_encoder_deps="libgsm"
1389 libgsm_ms_decoder_deps="libgsm"
1390 libgsm_ms_encoder_deps="libgsm"
1391 libmp3lame_encoder_deps="libmp3lame"
1392 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1393 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1394 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1395 libopenjpeg_decoder_deps="libopenjpeg"
1396 libschroedinger_decoder_deps="libschroedinger"
1397 libschroedinger_encoder_deps="libschroedinger"
1398 libspeex_decoder_deps="libspeex"
1399 libtheora_encoder_deps="libtheora"
1400 libvo_aacenc_encoder_deps="libvo_aacenc"
1401 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1402 libvorbis_encoder_deps="libvorbis"
1403 libvpx_decoder_deps="libvpx"
1404 libvpx_encoder_deps="libvpx"
1405 libx264_encoder_deps="libx264"
1406 libxavs_encoder_deps="libxavs"
1407 libxvid_encoder_deps="libxvid"
1408
1409 # demuxers / muxers
1410 ac3_demuxer_select="ac3_parser"
1411 asf_stream_muxer_select="asf_muxer"
1412 avisynth_demuxer_deps="avisynth"
1413 dirac_demuxer_select="dirac_parser"
1414 eac3_demuxer_select="ac3_parser"
1415 flac_demuxer_select="flac_parser"
1416 ipod_muxer_select="mov_muxer"
1417 libnut_demuxer_deps="libnut"
1418 libnut_muxer_deps="libnut"
1419 matroska_audio_muxer_select="matroska_muxer"
1420 matroska_demuxer_suggest="zlib bzlib"
1421 mov_demuxer_suggest="zlib"
1422 mp3_demuxer_select="mpegaudio_parser"
1423 mp4_muxer_select="mov_muxer"
1424 mpegtsraw_demuxer_select="mpegts_demuxer"
1425 mxf_d10_muxer_select="mxf_muxer"
1426 ogg_demuxer_select="golomb"
1427 psp_muxer_select="mov_muxer"
1428 rtp_demuxer_select="sdp_demuxer"
1429 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1430 rtsp_demuxer_select="http_protocol rtpdec"
1431 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol"
1432 sap_demuxer_select="sdp_demuxer"
1433 sap_muxer_select="rtp_muxer rtp_protocol"
1434 sdp_demuxer_select="rtpdec"
1435 spdif_muxer_select="aac_parser"
1436 tg2_muxer_select="mov_muxer"
1437 tgp_muxer_select="mov_muxer"
1438 w64_demuxer_deps="wav_demuxer"
1439
1440 # indevs / outdevs
1441 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1442 alsa_outdev_deps="alsa_asoundlib_h"
1443 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1444 dv1394_indev_deps="dv1394 dv_demuxer"
1445 fbdev_indev_deps="linux_fb_h"
1446 jack_indev_deps="jack_jack_h"
1447 libdc1394_indev_deps="libdc1394"
1448 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1449 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1450 sndio_indev_deps="sndio_h"
1451 sndio_outdev_deps="sndio_h"
1452 v4l_indev_deps="linux_videodev_h"
1453 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1454 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1455 vfwcap_indev_extralibs="-lavicap32"
1456 x11_grab_device_indev_deps="x11grab XShmCreateImage"
1457 x11_grab_device_indev_extralibs="-lX11 -lXext -lXfixes"
1458
1459 # protocols
1460 gopher_protocol_deps="network"
1461 http_protocol_deps="network"
1462 http_protocol_select="tcp_protocol"
1463 mmsh_protocol_select="http_protocol"
1464 mmst_protocol_deps="network"
1465 rtmp_protocol_select="tcp_protocol"
1466 rtp_protocol_select="udp_protocol"
1467 tcp_protocol_deps="network"
1468 udp_protocol_deps="network"
1469
1470 # filters
1471 blackframe_filter_deps="gpl"
1472 cropdetect_filter_deps="gpl"
1473 drawtext_filter_deps="libfreetype"
1474 frei0r_filter_deps="frei0r dlopen strtok_r"
1475 frei0r_src_filter_deps="frei0r dlopen strtok_r"
1476 hqdn3d_filter_deps="gpl"
1477 ocv_filter_deps="libopencv"
1478 scale_filter_deps="swscale"
1479 yadif_filter_deps="gpl"
1480
1481 # libraries
1482 avdevice_deps="avcodec avformat"
1483 avformat_deps="avcodec"
1484 postproc_deps="gpl"
1485
1486 # programs
1487 ffmpeg_deps="avcodec avformat swscale"
1488 ffmpeg_select="buffer_filter"
1489 ffplay_deps="avcodec avformat swscale sdl"
1490 ffplay_select="rdft"
1491 ffprobe_deps="avcodec avformat"
1492 ffserver_deps="avformat ffm_muxer fork rtp_protocol rtsp_demuxer"
1493 ffserver_extralibs='$ldl'
1494
1495 doc_deps="texi2html"
1496
1497 # tests
1498
1499 test_deps(){
1500     suf1=$1
1501     suf2=$2
1502     shift 2
1503     for v; do
1504         dep=${v%=*}
1505         tests=${v#*=}
1506         for name in ${tests}; do
1507             eval ${name}_test_deps="'${dep}$suf1 ${dep}$suf2'"
1508         done
1509     done
1510 }
1511
1512 set_ne_test_deps(){
1513     eval ${1}_be_test_deps="bigendian"
1514     eval ${1}_le_test_deps="!bigendian"
1515 }
1516
1517 test_deps _encoder _decoder                                             \
1518     adpcm_g726=g726                                                     \
1519     adpcm_ima_qt                                                        \
1520     adpcm_ima_wav                                                       \
1521     adpcm_ms                                                            \
1522     adpcm_swf                                                           \
1523     adpcm_yamaha=adpcm_yam                                              \
1524     alac                                                                \
1525     asv1                                                                \
1526     asv2                                                                \
1527     bmp                                                                 \
1528     dnxhd="dnxhd_1080i dnxhd_720p dnxhd_720p_rd"                        \
1529     dvvideo="dv dv50"                                                   \
1530     ffv1                                                                \
1531     flac                                                                \
1532     flashsv                                                             \
1533     flv                                                                 \
1534     gif                                                                 \
1535     h261                                                                \
1536     h263="h263 h263p"                                                   \
1537     huffyuv                                                             \
1538     jpegls                                                              \
1539     mjpeg="jpg mjpeg ljpeg"                                             \
1540     mp2                                                                 \
1541     mpeg1video="mpeg mpeg1b"                                            \
1542     mpeg2video="mpeg2 mpeg2thread"                                      \
1543     mpeg4="mpeg4 mpeg4adv mpeg4nr mpeg4thread error rc"                 \
1544     msmpeg4v3=msmpeg4                                                   \
1545     msmpeg4v2                                                           \
1546     pbm=pbmpipe                                                         \
1547     pcx                                                                 \
1548     pgm="pgm pgmpipe"                                                   \
1549     png                                                                 \
1550     ppm="ppm ppmpipe"                                                   \
1551     rawvideo="rgb yuv"                                                  \
1552     roq                                                                 \
1553     rv10                                                                \
1554     rv20                                                                \
1555     sgi                                                                 \
1556     snow="snow snowll"                                                  \
1557     svq1                                                                \
1558     targa=tga                                                           \
1559     tiff                                                                \
1560     wmav1                                                               \
1561     wmav2                                                               \
1562     wmv1                                                                \
1563     wmv2                                                                \
1564
1565 test_deps _muxer _demuxer                                               \
1566     aiff                                                                \
1567     pcm_alaw=alaw                                                       \
1568     asf                                                                 \
1569     au                                                                  \
1570     avi                                                                 \
1571     dv=dv_fmt                                                           \
1572     ffm                                                                 \
1573     flv=flv_fmt                                                         \
1574     gxf                                                                 \
1575     matroska=mkv                                                        \
1576     mmf                                                                 \
1577     mov                                                                 \
1578     pcm_mulaw=mulaw                                                     \
1579     mxf                                                                 \
1580     nut                                                                 \
1581     ogg                                                                 \
1582     rawvideo=pixfmt                                                     \
1583     rm                                                                  \
1584     swf                                                                 \
1585     mpegts=ts                                                           \
1586     voc                                                                 \
1587     wav                                                                 \
1588     yuv4mpegpipe=yuv4mpeg                                               \
1589
1590 ac3_fixed_test_deps="ac3_fixed_encoder ac3_decoder rm_muxer rm_demuxer"
1591 mpg_test_deps="mpeg1system_muxer mpegps_demuxer"
1592
1593 set_ne_test_deps pixdesc
1594 set_ne_test_deps pixfmts_copy
1595 set_ne_test_deps pixfmts_crop
1596 set_ne_test_deps pixfmts_hflip
1597 set_ne_test_deps pixfmts_null
1598 set_ne_test_deps pixfmts_pad
1599 set_ne_test_deps pixfmts_scale
1600 set_ne_test_deps pixfmts_vflip
1601
1602 # default parameters
1603
1604 logfile="config.log"
1605
1606 # installation paths
1607 prefix_default="/usr/local"
1608 bindir_default='${prefix}/bin'
1609 datadir_default='${prefix}/share/ffmpeg'
1610 incdir_default='${prefix}/include'
1611 libdir_default='${prefix}/lib'
1612 mandir_default='${prefix}/share/man'
1613 shlibdir_default="$libdir_default"
1614
1615 # toolchain
1616 ar_default="ar"
1617 cc_default="gcc"
1618 cc_version=\"unknown\"
1619 host_cc_default="gcc"
1620 ln_s="ln -sf"
1621 nm_default="nm"
1622 objformat="elf"
1623 pkg_config_default=pkg-config
1624 ranlib="ranlib"
1625 yasmexe="yasm"
1626 nogas=":"
1627
1628 nm_opts='-g'
1629
1630 # machine
1631 arch_default=$(uname -m)
1632 cpu="generic"
1633
1634 # OS
1635 target_os_default=$(tolower $(uname -s))
1636 host_os=$target_os_default
1637
1638 # configurable options
1639 enable avcodec
1640 enable avdevice
1641 enable avfilter
1642 enable avformat
1643 enable avutil
1644 enable asm
1645 enable debug
1646 enable doc
1647 enable fastdiv
1648 enable ffmpeg
1649 enable ffplay
1650 enable ffprobe
1651 enable ffserver
1652 enable network
1653 enable optimizations
1654 enable postproc
1655 enable protocols
1656 enable static
1657 enable swscale
1658 enable swscale_alpha
1659
1660 # build settings
1661 SHFLAGS='-shared -Wl,-soname,$$(@F)'
1662 FFSERVERLDFLAGS=-Wl,-E
1663 LIBPREF="lib"
1664 LIBSUF=".a"
1665 FULLNAME='$(NAME)$(BUILDSUF)'
1666 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
1667 SLIBPREF="lib"
1668 SLIBSUF=".so"
1669 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
1670 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
1671 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
1672 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
1673
1674 CC_O='-o $@'
1675
1676 host_cflags='-D_ISOC99_SOURCE -O3 -g'
1677 host_libs='-lm'
1678
1679 target_path='$(CURDIR)'
1680
1681 # since the object filename is not given with the -MM flag, the compiler
1682 # is only able to print the basename, and we must add the path ourselves
1683 DEPEND_CMD='$(DEPCC) $(DEPFLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
1684 DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -MM'
1685
1686 # find source path
1687 if test -f configure; then
1688     source_path="$(pwd)"
1689     disable source_path_used
1690 else
1691     source_path=$(cd $(dirname "$0"); pwd)
1692     enable source_path_used
1693     echo "$source_path" | grep -q '[[:blank:]]' &&
1694         die "Out of tree builds are impossible with whitespace in source path."
1695     test -e "$source_path/config.h" &&
1696         die "Out of tree builds are impossible with config.h in source dir."
1697 fi
1698
1699 for v in "$@"; do
1700     r=${v#*=}
1701     l=${v%"$r"}
1702     r=$(sh_quote "$r")
1703     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
1704 done
1705
1706 find_things(){
1707     thing=$1
1708     pattern=$2
1709     file=$source_path/$3
1710     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
1711 }
1712
1713 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
1714 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
1715 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
1716 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
1717 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
1718 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
1719 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
1720 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
1721 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
1722 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
1723 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
1724
1725 find_tests(){
1726     map "echo ${2}\${v}_test" $(ls "$source_path"/tests/ref/$1 | grep -v '[^-a-z0-9_]')
1727 }
1728
1729 ACODEC_TESTS=$(find_tests acodec)
1730 VCODEC_TESTS=$(find_tests vsynth1)
1731 LAVF_TESTS=$(find_tests lavf)
1732 LAVFI_TESTS=$(find_tests lavfi)
1733 SEEK_TESTS=$(find_tests seek seek_)
1734
1735 pcm_test_deps=$(map 'echo ${v%_*}_decoder $v' $(filter pcm_* $ENCODER_LIST))
1736
1737 for n in $COMPONENT_LIST; do
1738     v=$(toupper ${n%s})_LIST
1739     eval enable \$$v
1740     eval ${n}_if_any="\$$v"
1741 done
1742
1743 enable $ARCH_EXT_LIST $ACODEC_TESTS $VCODEC_TESTS $LAVF_TESTS $LAVFI_TESTS $SEEK_TESTS
1744
1745 die_unknown(){
1746     echo "Unknown option \"$1\"."
1747     echo "See $0 --help for available options."
1748     exit 1
1749 }
1750
1751 show_list() {
1752     suffix=_$1
1753     shift
1754     echo $* | sed s/$suffix//g | tr ' ' '\n' | sort | pr -3 -t
1755     exit 0
1756 }
1757
1758 for opt do
1759     optval="${opt#*=}"
1760     case "$opt" in
1761     --extra-ldflags=*) add_ldflags $optval
1762     ;;
1763     --extra-libs=*) add_extralibs $optval
1764     ;;
1765     --disable-devices) disable $INDEV_LIST $OUTDEV_LIST
1766     ;;
1767     --enable-debug=*) debuglevel="$optval"
1768     ;;
1769     --disable-everything)
1770     map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
1771     ;;
1772     --enable-*=*|--disable-*=*)
1773     eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
1774     is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
1775     eval list=\$$(toupper $thing)_LIST
1776     name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
1777     $action $(filter "$name" $list)
1778     ;;
1779     --enable-?*|--disable-?*)
1780     eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
1781     if is_in $option $COMPONENT_LIST; then
1782         test $action = disable && action=unset
1783         eval $action \$$(toupper ${option%s})_LIST
1784     elif is_in $option $CMDLINE_SELECT; then
1785         $action $option
1786     else
1787         die_unknown $opt
1788     fi
1789     ;;
1790     --list-*)
1791         NAME="${opt#--list-}"
1792         is_in $NAME $COMPONENT_LIST || die_unknown $opt
1793         NAME=${NAME%s}
1794         eval show_list $NAME \$$(toupper $NAME)_LIST
1795     ;;
1796     --help|-h) show_help
1797     ;;
1798     *)
1799     optname="${opt%%=*}"
1800     optname="${optname#--}"
1801     optname=$(echo "$optname" | sed 's/-/_/g')
1802     if is_in $optname $CMDLINE_SET; then
1803         eval $optname='$optval'
1804     elif is_in $optname $CMDLINE_APPEND; then
1805         append $optname "$optval"
1806     else
1807          die_unknown $opt
1808     fi
1809     ;;
1810     esac
1811 done
1812
1813 disabled logging && logfile=/dev/null
1814
1815 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
1816 set >> $logfile
1817
1818 test -n "$cross_prefix" && enable cross_compile
1819
1820 if enabled cross_compile; then
1821     test -n "$arch" && test -n "$target_os" ||
1822         die "Must specify target arch and OS when cross-compiling"
1823 fi
1824
1825 set_default arch target_os
1826
1827 ar_default="${cross_prefix}${ar_default}"
1828 cc_default="${cross_prefix}${cc_default}"
1829 nm_default="${cross_prefix}${nm_default}"
1830 pkg_config_default="${cross_prefix}${pkg_config_default}"
1831 ranlib="${cross_prefix}${ranlib}"
1832
1833 sysinclude_default="${sysroot}/usr/include"
1834
1835 set_default cc nm pkg_config sysinclude
1836 enabled cross_compile || host_cc_default=$cc
1837 set_default host_cc
1838
1839 if ! $pkg_config --version >/dev/null 2>&1; then
1840     warn "$pkg_config not found, library detection may fail."
1841     pkg_config=false
1842 fi
1843
1844 exesuf() {
1845     case $1 in
1846         mingw32*|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
1847     esac
1848 }
1849
1850 EXESUF=$(exesuf $target_os)
1851 HOSTEXESUF=$(exesuf $host_os)
1852
1853 # set temporary file name
1854 : ${TMPDIR:=$TEMPDIR}
1855 : ${TMPDIR:=$TMP}
1856 : ${TMPDIR:=/tmp}
1857
1858 if ! check_cmd mktemp -u XXXXXX; then
1859     # simple replacement for missing mktemp
1860     # NOT SAFE FOR GENERAL USE
1861     mktemp(){
1862         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
1863     }
1864 fi
1865
1866 tmpfile(){
1867     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
1868         (set -C; exec > $tmp) 2>/dev/null ||
1869         die "Unable to create temporary file in $TMPDIR."
1870     append TMPFILES $tmp
1871     eval $1=$tmp
1872 }
1873
1874 trap 'rm -f -- $TMPFILES' EXIT
1875
1876 tmpfile TMPC  .c
1877 tmpfile TMPE  $EXESUF
1878 tmpfile TMPH  .h
1879 tmpfile TMPO  .o
1880 tmpfile TMPS  .S
1881 tmpfile TMPV  .ver
1882 tmpfile TMPSH .sh
1883 tmpfile TMPASM .asm
1884
1885 unset -f mktemp
1886
1887 chmod +x $TMPE
1888
1889 # make sure we can execute files in $TMPDIR
1890 cat > $TMPSH 2>> $logfile <<EOF
1891 #! /bin/sh
1892 EOF
1893 chmod +x $TMPSH >> $logfile 2>&1
1894 if ! $TMPSH >> $logfile 2>&1; then
1895     cat <<EOF
1896 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
1897 variable to another directory and make sure that it is not mounted noexec.
1898 EOF
1899     die "Sanity test failed."
1900 fi
1901
1902 filter_cflags=echo
1903 filter_cppflags=echo
1904 filter_asflags=echo
1905
1906 if   $cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
1907     cc_type=llvm_gcc
1908     cc_version=__VERSION__
1909     gcc_extra_ver=$(expr "$($cc --version | head -n1)" : '.*\((.*)\)')
1910     cc_ident="llvm-gcc $($cc -dumpversion) $gcc_extra_ver"
1911     CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1912     AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1913     speed_cflags='-O3'
1914     size_cflags='-Os'
1915 elif $cc -v 2>&1 | grep -qi ^gcc; then
1916     cc_type=gcc
1917     cc_version=__VERSION__
1918     gcc_version=$($cc --version | head -n1)
1919     gcc_basever=$($cc -dumpversion)
1920     gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
1921     gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
1922     cc_ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
1923     if ! $cc -dumpversion | grep -q '^2\.'; then
1924         CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1925         AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1926     fi
1927     speed_cflags='-O3'
1928     size_cflags='-Os'
1929 elif $cc --version 2>/dev/null | grep -q Intel; then
1930     cc_type=icc
1931     cc_version="AV_STRINGIFY(__INTEL_COMPILER)"
1932     cc_ident=$($cc --version | head -n1)
1933     icc_version=$($cc -dumpversion)
1934     CC_DEPFLAGS='-MMD'
1935     AS_DEPFLAGS='-MMD'
1936     speed_cflags='-O3'
1937     size_cflags='-Os'
1938     noopt_cflags='-O1'
1939 elif $cc -v 2>&1 | grep -q xlc; then
1940     cc_type=xlc
1941     cc_version="AV_STRINGIFY(__IBMC__)"
1942     cc_ident=$($cc -qversion 2>/dev/null | head -n1)
1943     speed_cflags='-O5'
1944     size_cflags='-O5 -qcompact'
1945 elif $cc -V 2>/dev/null | grep -q Compaq; then
1946     cc_type=ccc
1947     cc_version="AV_STRINGIFY(__DECC_VER)"
1948     cc_ident=$($cc -V | head -n1 | cut -d' ' -f1-3)
1949     DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -M'
1950     debuglevel=3
1951     add_ldflags -Wl,-z,now # calls to libots crash without this
1952     speed_cflags='-fast'
1953     size_cflags='-O1'
1954 elif $cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
1955     test -d "$sysroot" || die "No valid sysroot specified."
1956     cc_type=armcc
1957     cc_version="AV_STRINGIFY(__ARMCC_VERSION)"
1958     cc_ident=$($cc --vsn | head -n1)
1959     armcc_conf="$PWD/armcc.conf"
1960     $cc --arm_linux_configure                 \
1961         --arm_linux_config_file="$armcc_conf" \
1962         --configure_sysroot="$sysroot"        \
1963         --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
1964         die "Error creating armcc configuration file."
1965     $cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
1966     cc="$cc --arm_linux_config_file=$armcc_conf --translate_gcc"
1967     as_default="${cross_prefix}gcc"
1968     CC_DEPFLAGS='-MMD'
1969     AS_DEPFLAGS='-MMD'
1970     speed_cflags='-O3'
1971     size_cflags='-Os'
1972     filter_asflags="filter_out -W${armcc_opt}*"
1973 elif $cc -version 2>/dev/null | grep -q TMS470; then
1974     cc_type=tms470
1975     cc_version="AV_STRINGIFY(__TI_COMPILER_VERSION__)"
1976     cc_ident=$($cc -version | head -n1 | tr -s ' ')
1977     cc="$cc --gcc --abi=eabi -eo=.o -mc -me"
1978     CC_O='-fr=$(@D)'
1979     as_default="${cross_prefix}gcc"
1980     ld_default="${cross_prefix}gcc"
1981     TMPO=$(basename $TMPC .c).o
1982     append TMPFILES $TMPO
1983     add_cflags -D__gnuc_va_list=va_list -D__USER_LABEL_PREFIX__=
1984     CC_DEPFLAGS='-ppa -ppd=$(@:.o=.d)'
1985     AS_DEPFLAGS='-MMD'
1986     speed_cflags='-O3 -mf=5'
1987     size_cflags='-O3 -mf=2'
1988     filter_cflags=tms470_flags
1989     tms470_flags(){
1990         for flag; do
1991             case $flag in
1992                 -march=*|-mcpu=*)
1993                     case "${flag#*=}" in
1994                         armv7-a|cortex-a*)      echo -mv=7a8 ;;
1995                         armv7-r|cortex-r*)      echo -mv=7r4 ;;
1996                         armv7-m|cortex-m*)      echo -mv=7m3 ;;
1997                         armv6*|arm11*)          echo -mv=6   ;;
1998                         armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
1999                                                 echo -mv=5e  ;;
2000                         armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2001                     esac
2002                     ;;
2003                 -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2004                 -mfpu=vfp)      echo --float_support=vfpv2        ;;
2005                 -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2006                 -msoft-float)   echo --float_support=vfplib       ;;
2007                 -O[0-3]|-mf=*)  echo $flag                        ;;
2008                 -g)             echo -g -mn                       ;;
2009                 -pds=*)         echo $flag                        ;;
2010             esac
2011         done
2012     }
2013 elif $cc -v 2>&1 | grep -q clang; then
2014     cc_type=clang
2015     $cc -dM -E $TMPC | grep -q __clang_version__ &&
2016         cc_version=__clang_version__ || cc_version=__VERSION__
2017     cc_ident=$($cc --version | head -n1)
2018     CC_DEPFLAGS='-MMD'
2019     AS_DEPFLAGS='-MMD'
2020     speed_cflags='-O3'
2021     size_cflags='-Os'
2022 elif $cc -V 2>&1 | grep -q Sun; then
2023     cc_type=suncc
2024     cc_version="AV_STRINGIFY(__SUNPRO_C)"
2025     cc_ident=$($cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2026     DEPEND_CMD='$(DEPCC) $(DEPFLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2027     DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -xM1'
2028     speed_cflags='-O5'
2029     size_cflags='-O5 -xspace'
2030     filter_cflags=suncc_flags
2031     suncc_flags(){
2032         for flag; do
2033             case $flag in
2034                 -march=*|-mcpu=*)
2035                     case "${flag#*=}" in
2036                         native)                   echo -xtarget=native       ;;
2037                         v9|niagara)               echo -xarch=sparc          ;;
2038                         ultrasparc)               echo -xarch=sparcvis       ;;
2039                         ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2040                         i586|pentium)             echo -xchip=pentium        ;;
2041                         i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2042                         pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2043                         pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2044                         pentium4*)          echo -xtarget=pentium4           ;;
2045                         prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2046                         *-sse3)             echo -xarch=sse3                 ;;
2047                         core2)              echo -xarch=ssse3 -xchip=core2   ;;
2048                         amdfam10|barcelona)       echo -xarch=sse4_1         ;;
2049                         athlon-4|athlon-[mx]p)    echo -xarch=ssea           ;;
2050                         k8|opteron|athlon64|athlon-fx)
2051                                                   echo -xarch=sse2a          ;;
2052                         athlon*)                  echo -xarch=pentium_proa   ;;
2053                     esac
2054                     ;;
2055                 -std=c99)             echo -xc99              ;;
2056                 -fomit-frame-pointer) echo -xregs=frameptr    ;;
2057                 -fPIC)                echo -KPIC -xcode=pic32 ;;
2058                 -W*,*)                echo $flag              ;;
2059                 -f*-*|-W*)                                    ;;
2060                 *)                    echo $flag              ;;
2061             esac
2062         done
2063     }
2064 elif $cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2065     cc_type=pathscale
2066     cc_version=__PATHSCALE__
2067     cc_ident=$($cc -v 2>&1 | head -n1 | tr -d :)
2068     CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2069     AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2070     speed_cflags='-O2'
2071     size_cflags='-Os'
2072     filter_cflags='filter_out -Wdisabled-optimization'
2073 elif $cc -v 2>&1 | grep -q Open64; then
2074     cc_type=open64
2075     cc_version=__OPEN64__
2076     cc_ident=$($cc -v 2>&1 | head -n1 | tr -d :)
2077     CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2078     AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2079     speed_cflags='-O2'
2080     size_cflags='-Os'
2081     filter_cflags='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2082 fi
2083
2084 test -n "$cc_type" && enable $cc_type ||
2085     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2086
2087 : ${as_default:=$cc}
2088 : ${dep_cc_default:=$cc}
2089 : ${ld_default:=$cc}
2090 set_default ar as dep_cc ld
2091
2092 test -n "$CC_DEPFLAGS" || CCDEP=$DEPEND_CMD
2093 test -n "$AS_DEPFLAGS" || ASDEP=$DEPEND_CMD
2094
2095 add_cflags $extra_cflags
2096 add_asflags $extra_cflags
2097
2098 if test -n "$sysroot"; then
2099     case "$cc_type" in
2100         gcc|llvm_gcc|clang)
2101             add_cppflags --sysroot="$sysroot"
2102             add_ldflags --sysroot="$sysroot"
2103         ;;
2104         tms470)
2105             add_cppflags -I"$sysinclude"
2106             add_ldflags  --sysroot="$sysroot"
2107         ;;
2108     esac
2109 fi
2110
2111 if test "$cpu" = host; then
2112     enabled cross_compile && die "--cpu=host makes no sense when cross-compiling."
2113
2114     case "$cc_type" in
2115         gcc|llvm_gcc)
2116             check_native(){
2117                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2118                 sed -n "/$1=/{
2119                             s/.*$1=\\([^ ]*\\).*/\\1/
2120                             p
2121                             q
2122                         }" $TMPE
2123             }
2124             cpu=$(check_native -march || check_native -mcpu)
2125         ;;
2126     esac
2127
2128     test "${cpu:-host}" = host && die "--cpu=host not supported with compiler $cc"
2129 fi
2130
2131 # Deal with common $arch aliases
2132 case "$arch" in
2133     arm*)
2134         arch="arm"
2135     ;;
2136     mips|mipsel|IP*)
2137         arch="mips"
2138     ;;
2139     mips64*)
2140         arch="mips"
2141         subarch="mips64"
2142     ;;
2143     parisc|hppa)
2144         arch="parisc"
2145     ;;
2146     parisc64|hppa64)
2147         arch="parisc"
2148         subarch="parisc64"
2149     ;;
2150     "Power Macintosh"|ppc|powerpc)
2151         arch="ppc"
2152     ;;
2153     ppc64|powerpc64)
2154         arch="ppc"
2155         subarch="ppc64"
2156     ;;
2157     s390|s390x)
2158         arch="s390"
2159     ;;
2160     sh4|sh)
2161         arch="sh4"
2162     ;;
2163     sun4u|sparc64)
2164         arch="sparc"
2165         subarch="sparc64"
2166     ;;
2167     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
2168         arch="x86"
2169     ;;
2170 esac
2171
2172 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2173 enable $arch
2174
2175 # Add processor-specific flags
2176 if test "$cpu" = generic; then
2177     : do nothing
2178 elif enabled ppc; then
2179
2180     case $(tolower $cpu) in
2181         601|ppc601|powerpc601)
2182             cpuflags="-mcpu=601"
2183             disable altivec
2184         ;;
2185         603*|ppc603*|powerpc603*)
2186             cpuflags="-mcpu=603"
2187             disable altivec
2188         ;;
2189         604*|ppc604*|powerpc604*)
2190             cpuflags="-mcpu=604"
2191             disable altivec
2192         ;;
2193         g3|75*|ppc75*|powerpc75*)
2194             cpuflags="-mcpu=750 -mpowerpc-gfxopt"
2195             disable altivec
2196         ;;
2197         g4|745*|ppc745*|powerpc745*)
2198             cpuflags="-mcpu=7450 -mpowerpc-gfxopt"
2199         ;;
2200         74*|ppc74*|powerpc74*)
2201             cpuflags="-mcpu=7400 -mpowerpc-gfxopt"
2202         ;;
2203         g5|970|ppc970|powerpc970|power4*)
2204             cpuflags="-mcpu=970 -mpowerpc-gfxopt -mpowerpc64"
2205         ;;
2206         cell)
2207             cpuflags="-mcpu=cell"
2208             enable ldbrx
2209         ;;
2210         e500v2)
2211             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
2212             disable altivec
2213         ;;
2214         e500)
2215             cpuflags="-mcpu=8540 -mhard-float"
2216             disable altivec
2217         ;;
2218     esac
2219
2220 elif enabled x86; then
2221
2222     case $cpu in
2223         i[345]86|pentium)
2224             cpuflags="-march=$cpu"
2225             disable mmx
2226         ;;
2227         # targets that do NOT support conditional mov (cmov)
2228         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
2229             cpuflags="-march=$cpu"
2230             disable cmov
2231         ;;
2232         # targets that do support conditional mov (cmov)
2233         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64|k8|opteron|athlon-fx|core2|amdfam10|barcelona|atom)
2234             cpuflags="-march=$cpu"
2235             enable cmov
2236             enable fast_cmov
2237         ;;
2238         # targets that do support conditional mov but on which it's slow
2239         pentium4|pentium4m|prescott|nocona)
2240             cpuflags="-march=$cpu"
2241             enable cmov
2242             disable fast_cmov
2243         ;;
2244     esac
2245
2246 elif enabled sparc; then
2247
2248     case $cpu in
2249         niagara)
2250             cpuflags="-mcpu=$cpu"
2251             disable vis
2252         ;;
2253         sparc64)
2254             cpuflags="-mcpu=v9"
2255         ;;
2256     esac
2257
2258 elif enabled arm; then
2259
2260     case $cpu in
2261         armv*)
2262             cpuflags="-march=$cpu"
2263             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
2264         ;;
2265         *)
2266             cpuflags="-mcpu=$cpu"
2267             case $cpu in
2268                 cortex-a*)                               subarch=armv7a  ;;
2269                 cortex-r*)                               subarch=armv7r  ;;
2270                 cortex-m*)                               subarch=armv7m  ;;
2271                 arm11*)                                  subarch=armv6   ;;
2272                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
2273                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
2274             esac
2275         ;;
2276     esac
2277
2278 elif enabled alpha; then
2279
2280     enabled ccc && cpuflags="-arch $cpu" || cpuflags="-mcpu=$cpu"
2281
2282 elif enabled bfin; then
2283
2284     cpuflags="-mcpu=$cpu"
2285
2286 elif enabled mips; then
2287
2288     cpuflags="-march=$cpu"
2289
2290 elif enabled avr32; then
2291
2292     case $cpu in
2293         ap7[02]0[0-2])
2294             subarch="avr32_ap"
2295             cpuflags="-mpart=$cpu"
2296         ;;
2297         ap)
2298             subarch="avr32_ap"
2299             cpuflags="-march=$cpu"
2300         ;;
2301         uc3[ab]*)
2302             subarch="avr32_uc"
2303             cpuflags="-mcpu=$cpu"
2304         ;;
2305         uc)
2306             subarch="avr32_uc"
2307             cpuflags="-march=$cpu"
2308         ;;
2309     esac
2310
2311 fi
2312
2313 add_cflags $cpuflags
2314 add_asflags $cpuflags
2315
2316 # compiler sanity check
2317 check_exec <<EOF
2318 int main(void){ return 0; }
2319 EOF
2320 if test "$?" != 0; then
2321     echo "$cc is unable to create an executable file."
2322     if test -z "$cross_prefix" && ! enabled cross_compile ; then
2323         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
2324         echo "Only do this if you know what cross compiling means."
2325     fi
2326     die "C compiler test failed."
2327 fi
2328
2329 add_cppflags -D_ISOC99_SOURCE
2330 check_cflags -std=c99
2331 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
2332 #include <stdlib.h>
2333 EOF
2334 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
2335 #include <stdlib.h>
2336 EOF
2337
2338 check_host_cflags -std=c99
2339 check_host_cflags -Wall
2340
2341 case "$arch" in
2342     alpha|ia64|mips|parisc|sparc)
2343         spic=$shared
2344     ;;
2345     x86)
2346         subarch="x86_32"
2347         check_cc <<EOF && subarch="x86_64"
2348         int test[(int)sizeof(char*) - 7];
2349 EOF
2350         if test "$subarch" = "x86_64"; then
2351             spic=$shared
2352         fi
2353     ;;
2354 esac
2355
2356 enable $subarch
2357 enabled spic && enable pic
2358
2359 # OS specific
2360 case $target_os in
2361     haiku)
2362         prefix_default="/boot/common"
2363         network_extralibs="-lnetwork"
2364         host_libs=
2365         ;;
2366     sunos)
2367         FFSERVERLDFLAGS=""
2368         SHFLAGS='-shared -Wl,-h,$$(@F)'
2369         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
2370         network_extralibs="-lsocket -lnsl"
2371         add_cppflags -D__EXTENSIONS__
2372         nm_opts='-P -g'
2373         ;;
2374     netbsd)
2375         disable symver
2376         oss_indev_extralibs="-lossaudio"
2377         oss_outdev_extralibs="-lossaudio"
2378         ;;
2379     openbsd)
2380         enable malloc_aligned
2381         # On OpenBSD 4.5. the compiler does not use PIC unless
2382         # explicitly using -fPIC. Libav builds fine without PIC,
2383         # however the generated executable will not do anything
2384         # (simply quits with exit-code 1, no crash, no output).
2385         # Thus explicitly enable PIC here.
2386         enable pic
2387         disable symver
2388         SHFLAGS='-shared'
2389         oss_indev_extralibs="-lossaudio"
2390         oss_outdev_extralibs="-lossaudio"
2391         ;;
2392     dragonfly)
2393         enable malloc_aligned
2394         disable symver
2395         ;;
2396     freebsd)
2397         enable malloc_aligned
2398         ;;
2399     bsd/os)
2400         add_extralibs -lpoll -lgnugetopt
2401         ;;
2402     darwin)
2403         enable malloc_aligned
2404         gas="gas-preprocessor.pl $cc"
2405         enabled ppc && add_asflags -force_cpusubtype_ALL
2406         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
2407         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
2408         add_ldflags -Wl,-dynamic,-search_paths_first
2409         SLIBSUF=".dylib"
2410         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
2411         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
2412         FFSERVERLDFLAGS=-Wl,-bind_at_load
2413         objformat="macho"
2414         enabled x86_64 && objformat="macho64"
2415         enabled_any pic shared ||
2416             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
2417         ;;
2418     mingw32*)
2419         if test $target_os = "mingw32ce"; then
2420             disable network
2421         else
2422             target_os=mingw32
2423         fi
2424         LIBTARGET=i386
2425         if enabled x86_64; then
2426             enable malloc_aligned
2427             LIBTARGET="i386:x86-64"
2428         elif enabled arm; then
2429             LIBTARGET=arm-wince
2430         fi
2431         shlibdir_default="$bindir_default"
2432         SLIBPREF=""
2433         SLIBSUF=".dll"
2434         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
2435         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
2436         SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
2437         SLIB_INSTALL_EXTRA_CMD='-install -m 644 $(SUBDIR)$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.lib) "$(SHLIBDIR)/$(SLIBNAME:$(SLIBSUF)=.lib)"; \
2438             install -m 644 $(SUBDIR)$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.lib) "$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.lib)"; \
2439             install -d "$(LIBDIR)"; \
2440             install -m 644 $(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) "$(LIBDIR)/lib$(SLIBNAME:$(SLIBSUF)=.dll.a)"'
2441         SLIB_UNINSTALL_EXTRA_CMD='rm -f "$(SHLIBDIR)/$(SLIBNAME:$(SLIBSUF)=.lib)"'
2442         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'
2443         objformat="win32"
2444         dlltool="${cross_prefix}dlltool"
2445         enable dos_paths
2446         check_cflags -fno-common
2447         check_cpp_condition _mingw.h "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) \
2448                                       || (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
2449                 die "ERROR: MinGW runtime version must be >= 3.15."
2450         add_cppflags -U__STRICT_ANSI__
2451         ;;
2452     cygwin*)
2453         target_os=cygwin
2454         shlibdir_default="$bindir_default"
2455         SLIBPREF="cyg"
2456         SLIBSUF=".dll"
2457         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
2458         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
2459         SHFLAGS='-shared -Wl,--enable-auto-image-base'
2460         objformat="win32"
2461         enable dos_paths
2462         check_cflags -fno-common
2463         add_cppflags -U__STRICT_ANSI__
2464         ;;
2465     *-dos|freedos|opendos)
2466         network_extralibs="-lsocket"
2467         objformat="coff"
2468         enable dos_paths
2469         add_cppflags -U__STRICT_ANSI__
2470         ;;
2471     linux)
2472         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
2473         enable dv1394
2474         ;;
2475     irix*)
2476         target_os=irix
2477         ranlib="echo ignoring ranlib"
2478         ;;
2479     os/2*)
2480         ln_s="cp -f"
2481         objformat="aout"
2482         add_cppflags -D_GNU_SOURCE
2483         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
2484         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
2485         FFSERVERLDFLAGS=""
2486         LIBSUF="_s.a"
2487         SLIBPREF=""
2488         SLIBSUF=".dll"
2489         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
2490         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
2491         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
2492           echo PROTMODE >> $(SUBDIR)$(NAME).def; \
2493           echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
2494           echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
2495           echo EXPORTS >> $(SUBDIR)$(NAME).def; \
2496           emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
2497         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
2498           emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
2499         SLIB_INSTALL_EXTRA_CMD='install -m 644 $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib "$(LIBDIR)"'
2500         SLIB_UNINSTALL_EXTRA_CMD='rm -f "$(LIBDIR)"/$(LIBPREF)$(NAME)_dll.a "$(LIBDIR)"/$(LIBPREF)$(NAME)_dll.lib'
2501         enable dos_paths
2502         ;;
2503     gnu/kfreebsd)
2504         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -D_BSD_SOURCE
2505         ;;
2506     gnu)
2507         ;;
2508     qnx)
2509         add_cppflags -D_QNX_SOURCE
2510         network_extralibs="-lsocket"
2511         ;;
2512     symbian)
2513         SLIBSUF=".dll"
2514         enable dos_paths
2515         add_cflags --include=$sysinclude/gcce/gcce.h
2516         ;;
2517     none)
2518         ;;
2519     *)
2520         die "Unknown OS '$target_os'."
2521         ;;
2522 esac
2523
2524 echo "config:$arch:$subarch:$cpu:$target_os:$cc_ident:$LIBAV_CONFIGURATION" >config.fate
2525
2526 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable pic
2527
2528 set_default $PATHS_LIST
2529
2530 # we need to build at least one lib type
2531 if ! enabled_any static shared; then
2532     cat <<EOF
2533 At least one library type must be built.
2534 Specify --enable-static to build the static libraries or --enable-shared to
2535 build the shared libraries as well. To only build the shared libraries specify
2536 --disable-static in addition to --enable-shared.
2537 EOF
2538     exit 1;
2539 fi
2540
2541 disabled static && LIBNAME=""
2542
2543 die_license_disabled() {
2544     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
2545 }
2546
2547 die_license_disabled gpl libx264
2548 die_license_disabled gpl libxavs
2549 die_license_disabled gpl libxvid
2550 die_license_disabled gpl x11grab
2551
2552 die_license_disabled nonfree libfaac
2553
2554 die_license_disabled version3 libopencore_amrnb
2555 die_license_disabled version3 libopencore_amrwb
2556 die_license_disabled version3 libvo_aacenc
2557 die_license_disabled version3 libvo_amrwbenc
2558
2559 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2560
2561 disabled optimizations || check_cflags -fomit-frame-pointer
2562
2563 enable_pic() {
2564     enable pic
2565     add_cppflags -DPIC
2566     add_cflags   -fPIC
2567     add_asflags  -fPIC
2568 }
2569
2570 enabled pic && enable_pic
2571
2572 check_cc <<EOF || die "Symbol mangling check failed."
2573 int ff_extern;
2574 EOF
2575 sym=$($nm $nm_opts $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
2576 extern_prefix=${sym%%ff_extern*}
2577
2578 check_cc <<EOF && enable inline_asm
2579 void foo(void) { __asm__ volatile ("" ::); }
2580 EOF
2581
2582 _restrict=
2583 for restrict_keyword in restrict __restrict__ __restrict; do
2584     check_cc <<EOF && _restrict=$restrict_keyword && break
2585 void foo(char * $restrict_keyword p);
2586 EOF
2587 done
2588
2589 check_cc <<EOF && enable attribute_packed
2590 struct { int x; } __attribute__((packed)) x;
2591 EOF
2592
2593 check_cc <<EOF && enable attribute_may_alias
2594 union { int x; } __attribute__((may_alias)) x;
2595 EOF
2596
2597 check_cc <<EOF || die "endian test failed"
2598 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
2599 EOF
2600 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
2601
2602 if enabled alpha; then
2603
2604     check_cflags -mieee
2605
2606 elif enabled arm; then
2607
2608     check_cflags -marm
2609     nogas=die
2610
2611     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
2612         enable vfp_args
2613     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
2614         case "${cross_prefix:-$cc}" in
2615             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
2616             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
2617 __asm__ (".eabi_attribute 28, 1");
2618 int main(void) { return 0; }
2619 EOF
2620         esac
2621         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
2622     fi
2623
2624     # We have to check if pld is a nop and disable it.
2625     check_asm pld '"pld [r0]"'
2626
2627     enabled armv5te && check_asm armv5te '"qadd r0, r0, r0"'
2628     enabled armv6   && check_asm armv6   '"sadd16 r0, r0, r0"'
2629     enabled armv6t2 && check_asm armv6t2 '"movt r0, #0"'
2630     enabled armvfp  && check_asm armvfp  '"fadds s0, s0, s0"'
2631     enabled iwmmxt  && check_asm iwmmxt  '"wunpckelub wr6, wr4"'
2632     enabled neon    && check_asm neon    '"vadd.i16 q0, q0, q0"'
2633     enabled vfpv3   && check_asm vfpv3   '"vmov.f32 s0, #1.0"'
2634
2635     enabled_all armv6t2 shared !pic && enable_pic
2636
2637 elif enabled mips; then
2638
2639     check_asm loongson '"dmult.g $1, $2, $3"'
2640     enabled mmi     && check_asm mmi     '"lq $2, 0($2)"'
2641
2642 elif enabled ppc; then
2643
2644     enable local_aligned_8 local_aligned_16
2645
2646     check_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
2647     check_asm ibm_asm   '"add 0, 0, 0"'
2648     check_asm ppc4xx    '"maclhw r10, r11, r12"'
2649     check_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
2650
2651     # AltiVec flags: The FSF version of GCC differs from the Apple version
2652     if enabled altivec; then
2653         nogas=warn
2654         check_cflags -maltivec -mabi=altivec &&
2655         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
2656         check_cflags -faltivec
2657
2658         # check if our compiler supports Motorola AltiVec C API
2659         check_cc <<EOF || disable altivec
2660 $inc_altivec_h
2661 int main(void) {
2662     vector signed int v1, v2, v3;
2663     v1 = vec_add(v2,v3);
2664     return 0;
2665 }
2666 EOF
2667
2668         # check if our compiler supports braces for vector declarations
2669         check_cc <<EOF || die "You need a compiler that supports {} in AltiVec vector declarations."
2670 $inc_altivec_h
2671 int main (void) { (vector int) {1}; return 0; }
2672 EOF
2673     fi
2674
2675 elif enabled sparc; then
2676
2677     enabled vis && check_asm vis '"pdist %f0, %f0, %f0"' -mcpu=ultrasparc &&
2678         add_cflags -mcpu=ultrasparc -mtune=ultrasparc
2679
2680 elif enabled x86; then
2681
2682     enable local_aligned_8 local_aligned_16
2683
2684     # check whether EBP is available on x86
2685     # As 'i' is stored on the stack, this program will crash
2686     # if the base pointer is used to access it because the
2687     # base pointer is cleared in the inline assembly code.
2688     check_exec_crash <<EOF && enable ebp_available
2689     volatile int i=0;
2690     __asm__ volatile (
2691         "xorl %%ebp, %%ebp"
2692     ::: "%ebp");
2693     return i;
2694 EOF
2695
2696     # check whether EBX is available on x86
2697     check_asm ebx_available '""::"b"(0)' &&
2698         check_asm ebx_available '"":::"%ebx"'
2699
2700     # check whether xmm clobbers are supported
2701     check_asm xmm_clobbers '"":::"%xmm0"'
2702
2703     # check whether more than 10 operands are supported
2704     check_cc <<EOF && enable ten_operands
2705 int main(void) {
2706     int x=0;
2707     __asm__ volatile(
2708         ""
2709         :"+&rm"(x), "+&rm"(x), "+&rm"(x), "+&rm"(x), "+&rm"(x), "+&rm"(x)
2710     );
2711     return 0;
2712 }
2713 EOF
2714
2715     # check whether binutils is new enough to compile SSSE3/MMX2
2716     enabled ssse3 && check_asm ssse3 '"pabsw %xmm0, %xmm0"'
2717     enabled mmx2  && check_asm mmx2  '"pmaxub %mm0, %mm1"'
2718
2719     check_asm bswap '"bswap %%eax" ::: "%eax"'
2720
2721     if ! disabled_any asm mmx yasm; then
2722         if check_cmd $yasmexe --version; then
2723             enabled x86_64 && yasm_extra="-m amd64"
2724             yasm_debug="-g dwarf2"
2725         elif check_cmd nasm -v; then
2726             yasmexe=nasm
2727             yasm_debug="-g -F dwarf"
2728             enabled x86_64 && test "$objformat" = elf && objformat=elf64
2729         fi
2730
2731         YASMFLAGS="-f $objformat $yasm_extra"
2732         enabled pic               && append YASMFLAGS "-DPIC"
2733         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
2734         case "$objformat" in
2735             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
2736         esac
2737
2738         check_yasm "pextrd [eax], xmm0, 1" && enable yasm ||
2739             die "yasm not found, use --disable-yasm for a crippled build"
2740         check_yasm "vextractf128 xmm0, ymm0, 0" || disable avx
2741     fi
2742
2743     case "$cpu" in
2744         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
2745             disable fast_clz
2746         ;;
2747     esac
2748
2749 fi
2750
2751 if enabled asm; then
2752     as=${gas:=$as}
2753     check_asm gnu_as '".macro m n\n\\n:.int 0\n.endm\nm x"' ||
2754         $nogas "GNU assembler not found, install gas-preprocessor"
2755 fi
2756
2757 check_ldflags -Wl,--as-needed
2758
2759 if check_func dlopen; then
2760     ldl=
2761 elif check_func dlopen -ldl; then
2762     ldl=-ldl
2763 fi
2764
2765 if enabled network; then
2766     check_type "sys/types.h sys/socket.h" socklen_t
2767     check_type netdb.h "struct addrinfo"
2768     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
2769     check_type netinet/in.h "struct sockaddr_in6"
2770     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
2771     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
2772     # Prefer arpa/inet.h over winsock2
2773     if check_header arpa/inet.h ; then
2774         check_func closesocket
2775     elif check_header winsock2.h ; then
2776         check_func_headers winsock2.h closesocket -lws2 && \
2777             network_extralibs="-lws2" || \
2778         { check_func_headers winsock2.h closesocket -lws2_32 && \
2779             network_extralibs="-lws2_32"; }
2780         check_type ws2tcpip.h socklen_t
2781         check_type ws2tcpip.h "struct addrinfo"
2782         check_type ws2tcpip.h "struct ipv6_mreq"
2783         check_type ws2tcpip.h "struct sockaddr_in6"
2784         check_type ws2tcpip.h "struct sockaddr_storage"
2785         check_struct winsock2.h "struct sockaddr" sa_len
2786     else
2787         disable network
2788     fi
2789 fi
2790
2791 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
2792 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
2793
2794 check_func  fcntl
2795 check_func  fork
2796 check_func  getaddrinfo $network_extralibs
2797 check_func  gethrtime
2798 check_func  getrusage
2799 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
2800 check_func  inet_aton $network_extralibs
2801 check_func  isatty
2802 check_func  localtime_r
2803 check_func  ${malloc_prefix}memalign            && enable memalign
2804 check_func  mkstemp
2805 check_func  mmap
2806 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
2807 check_func  setrlimit
2808 check_func  strerror_r
2809 check_func  strtok_r
2810 check_func_headers io.h setmode
2811 check_func_headers lzo/lzo1x.h lzo1x_999_compress
2812 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
2813 check_func_headers windows.h GetProcessTimes
2814 check_func_headers windows.h MapViewOfFile
2815 check_func_headers windows.h VirtualAlloc
2816
2817 check_header dlfcn.h
2818 check_header dxva2api.h
2819 check_header malloc.h
2820 check_header poll.h
2821 check_header sys/mman.h
2822 check_header sys/resource.h
2823 check_header sys/select.h
2824 check_header vdpau/vdpau.h
2825 check_header vdpau/vdpau_x11.h
2826 check_header X11/extensions/XvMClib.h
2827
2828 check_struct dxva2api.h DXVA_PictureParameters wDecodedPictureIndex
2829
2830 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
2831 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
2832
2833 # check for some common methods of building with pthread support
2834 # do this before the optional library checks as some of them require pthreads
2835 if ! disabled pthreads && ! enabled w32threads; then
2836     enable pthreads
2837     if check_func pthread_create; then
2838         :
2839     elif check_func pthread_create -pthread; then
2840         add_cflags -pthread
2841         add_extralibs -pthread
2842     elif check_func pthread_create -pthreads; then
2843         add_cflags -pthreads
2844         add_extralibs -pthreads
2845     elif check_func pthread_create -lpthreadGC2; then
2846         add_extralibs -lpthreadGC2
2847     elif ! check_lib pthread.h pthread_create -lpthread; then
2848         disable pthreads
2849     fi
2850 fi
2851
2852 for thread in $THREADS_LIST; do
2853     if enabled $thread; then
2854         test -n "$thread_type" &&
2855             die "ERROR: Only one thread type must be selected." ||
2856             thread_type="$thread"
2857     fi
2858 done
2859
2860 check_lib math.h sin -lm && LIBM="-lm"
2861 enabled vaapi && require vaapi va/va.h vaInitialize -lva
2862
2863 check_mathfunc exp2
2864 check_mathfunc exp2f
2865 check_mathfunc llrint
2866 check_mathfunc llrintf
2867 check_mathfunc log2
2868 check_mathfunc log2f
2869 check_mathfunc lrint
2870 check_mathfunc lrintf
2871 check_mathfunc round
2872 check_mathfunc roundf
2873 check_mathfunc trunc
2874 check_mathfunc truncf
2875
2876 # these are off by default, so fail if requested and not available
2877 enabled avisynth   && require2 vfw32 "windows.h vfw.h" AVIFileInit -lavifil32
2878 enabled frei0r     && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
2879 enabled libdirac   && require_pkg_config dirac                          \
2880     "libdirac_decoder/dirac_parser.h libdirac_encoder/dirac_encoder.h"  \
2881     "dirac_decoder_init dirac_encoder_init"
2882 enabled libfaac    && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
2883 enabled libfreetype && require_pkg_config freetype2 "ft2build.h freetype/freetype.h" FT_Init_FreeType
2884 enabled libgsm     && require  libgsm gsm/gsm.h gsm_create -lgsm
2885 enabled libmp3lame && require  "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
2886 enabled libnut     && require  libnut libnut.h nut_demuxer_init -lnut
2887 enabled libopencore_amrnb  && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
2888 enabled libopencore_amrwb  && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
2889 enabled libopencv  && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
2890 enabled libopenjpeg && require libopenjpeg openjpeg.h opj_version -lopenjpeg
2891 enabled librtmp    && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
2892 enabled libschroedinger && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
2893 enabled libspeex   && require  libspeex speex/speex.h speex_decoder_init -lspeex
2894 enabled libtheora  && require  libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
2895 enabled libvo_aacenc && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
2896 enabled libvo_amrwbenc && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
2897 enabled libvorbis  && require  libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
2898 enabled libvpx     && {
2899     enabled libvpx_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
2900                                 die "ERROR: libvpx decoder version must be >=0.9.1"; }
2901     enabled libvpx_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_enc_init_ver -lvpx ||
2902                                 die "ERROR: libvpx encoder version must be >=0.9.1"; } }
2903 enabled libx264    && require  libx264 x264.h x264_encoder_encode -lx264 &&
2904                       { check_cpp_condition x264.h "X264_BUILD >= 115" ||
2905                         die "ERROR: libx264 version must be >= 0.115."; }
2906 enabled libxavs    && require  libxavs xavs.h xavs_encoder_encode -lxavs
2907 enabled libxvid    && require  libxvid xvid.h xvid_global -lxvidcore
2908 enabled mlib       && require  mediaLib mlib_types.h mlib_VectorSub_S16_U8_Mod -lmlib
2909
2910 # libdc1394 check
2911 if enabled libdc1394; then
2912     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
2913         enable libdc1394_2; } ||
2914     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
2915         enable libdc1394_1; } ||
2916     die "ERROR: No version of libdc1394 found "
2917 fi
2918
2919 if check_pkg_config sdl SDL_version.h SDL_Linked_Version; then
2920     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
2921     enable sdl &&
2922     check_struct SDL.h SDL_VideoInfo current_w $sdl_cflags && enable sdl_video_size
2923 fi
2924
2925 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
2926
2927 check_header linux/fb.h
2928 check_header linux/videodev.h
2929 check_header linux/videodev2.h
2930 check_header sys/videoio.h
2931
2932 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
2933 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
2934 # w32api 3.12 had it defined wrong
2935 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
2936
2937 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
2938 { check_header dev/bktr/ioctl_meteor.h &&
2939   check_header dev/bktr/ioctl_bt848.h; } ||
2940 { check_header machine/ioctl_meteor.h &&
2941   check_header machine/ioctl_bt848.h; } ||
2942 { check_header dev/video/meteor/ioctl_meteor.h &&
2943   check_header dev/video/bktr/ioctl_bt848.h; } ||
2944 check_header dev/ic/bt8xx.h
2945
2946 check_header sndio.h
2947 check_header sys/soundcard.h
2948 check_header soundcard.h
2949
2950 enabled_any alsa_indev alsa_outdev && check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
2951
2952 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack
2953
2954 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
2955
2956 enabled x11grab                         &&
2957 check_header X11/Xlib.h                 &&
2958 check_header X11/extensions/XShm.h      &&
2959 check_header X11/extensions/Xfixes.h    &&
2960 check_func XOpenDisplay -lX11           &&
2961 check_func XShmCreateImage -lX11 -lXext &&
2962 check_func XFixesGetCursorImage -lX11 -lXext -lXfixes
2963
2964 if ! disabled vdpau && enabled vdpau_vdpau_h; then
2965 check_cpp_condition \
2966     vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
2967     { echolog "Please upgrade to libvdpau >= 0.2 if you would like vdpau support." &&
2968       disable vdpau; }
2969 fi
2970
2971 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
2972
2973 # add some useful compiler flags if supported
2974 check_cflags -Wdeclaration-after-statement
2975 check_cflags -Wall
2976 check_cflags -Wno-parentheses
2977 check_cflags -Wno-switch
2978 check_cflags -Wdisabled-optimization
2979 check_cflags -Wpointer-arith
2980 check_cflags -Wredundant-decls
2981 check_cflags -Wno-pointer-sign
2982 check_cflags -Wcast-qual
2983 check_cflags -Wwrite-strings
2984 check_cflags -Wtype-limits
2985 check_cflags -Wundef
2986 check_cflags -Wmissing-prototypes
2987 enabled extra_warnings && check_cflags -Winline
2988
2989 # add some linker flags
2990 check_ldflags -Wl,--warn-common
2991 check_ldflags -Wl,-rpath-link,libpostproc -Wl,-rpath-link,libswscale -Wl,-rpath-link,libavfilter -Wl,-rpath-link,libavdevice -Wl,-rpath-link,libavformat -Wl,-rpath-link,libavcodec -Wl,-rpath-link,libavutil
2992 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
2993
2994 echo "X{};" > $TMPV
2995 if test_ldflags -Wl,--version-script,$TMPV; then
2996     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
2997     check_cc <<EOF && enable symver_asm_label
2998 void ff_foo(void) __asm__ ("av_foo@VERSION");
2999 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
3000 EOF
3001     check_cc <<EOF && enable symver_gnu_asm
3002 __asm__(".symver ff_foo,av_foo@VERSION");
3003 void ff_foo(void) {}
3004 EOF
3005 fi
3006
3007 if enabled small; then
3008     add_cflags $size_cflags
3009     optimizations="small"
3010 elif enabled optimizations; then
3011     add_cflags $speed_cflags
3012 else
3013     add_cflags $noopt_cflags
3014 fi
3015 check_cflags -fno-math-errno
3016 check_cflags -fno-signed-zeros
3017
3018 if enabled icc; then
3019     # Just warnings, no remarks
3020     check_cflags -w1
3021     # -wd: Disable following warnings
3022     # 144, 167, 556: -Wno-pointer-sign
3023     # 1292: attribute "foo" ignored
3024     # 10006: ignoring unknown option -fno-signed-zeros
3025     # 10148: ignoring unknown option -Wno-parentheses
3026     # 10156: ignoring option '-W'; no argument required
3027     check_cflags -wd144,167,556,1292,10006,10148,10156
3028     # 11030: Warning unknown option --as-needed
3029     # 10156: ignoring option '-export'; no argument required
3030     check_ldflags -wd10156,11030
3031     # Allow to compile with optimizations
3032     check_ldflags -march=$cpu
3033     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
3034     enable ebp_available
3035     if enabled x86_32; then
3036         test ${icc_version%%.*} -ge 11 && \
3037             check_cflags -falign-stack=maintain-16-byte || \
3038             disable aligned_stack
3039     fi
3040 elif enabled ccc; then
3041     # disable some annoying warnings
3042     add_cflags -msg_disable cvtu32to64
3043     add_cflags -msg_disable embedcomment
3044     add_cflags -msg_disable needconstext
3045     add_cflags -msg_disable nomainieee
3046     add_cflags -msg_disable ptrmismatch1
3047     add_cflags -msg_disable unreachcode
3048 elif enabled gcc; then
3049     check_cflags -fno-tree-vectorize
3050     check_cflags -Werror=implicit-function-declaration
3051     check_cflags -Werror=missing-prototypes
3052 elif enabled llvm_gcc; then
3053     check_cflags -mllvm -stack-alignment=16
3054 elif enabled clang; then
3055     check_cflags -mllvm -stack-alignment=16
3056     check_cflags -Qunused-arguments
3057 elif enabled armcc; then
3058     # 2523: use of inline assembler is deprecated
3059     add_cflags -W${armcc_opt},--diag_suppress=2523
3060     add_cflags -W${armcc_opt},--diag_suppress=1207
3061     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
3062     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
3063 elif enabled tms470; then
3064     add_cflags -pds=824 -pds=837
3065 elif enabled pathscale; then
3066     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
3067 fi
3068
3069 enabled_any $THREADS_LIST      && enable threads
3070
3071 check_deps $CONFIG_LIST       \
3072            $CONFIG_EXTRA      \
3073            $HAVE_LIST         \
3074            $DECODER_LIST      \
3075            $ENCODER_LIST      \
3076            $HWACCEL_LIST      \
3077            $PARSER_LIST       \
3078            $BSF_LIST          \
3079            $DEMUXER_LIST      \
3080            $MUXER_LIST        \
3081            $FILTER_LIST       \
3082            $INDEV_LIST        \
3083            $OUTDEV_LIST       \
3084            $PROTOCOL_LIST     \
3085            $ACODEC_TESTS      \
3086            $VCODEC_TESTS      \
3087            $LAVF_TESTS        \
3088            $LAVFI_TESTS       \
3089            $SEEK_TESTS        \
3090
3091 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
3092
3093 ! enabled_any memalign posix_memalign malloc_aligned &&
3094     enabled_any $need_memalign && enable memalign_hack
3095
3096 echo "install prefix            $prefix"
3097 echo "source path               $source_path"
3098 echo "C compiler                $cc"
3099 echo "ARCH                      $arch ($cpu)"
3100 if test "$build_suffix" != ""; then
3101     echo "build suffix              $build_suffix"
3102 fi
3103 if test "$extra_version" != ""; then
3104     echo "version string suffix     $extra_version"
3105 fi
3106 echo "big-endian                ${bigendian-no}"
3107 echo "runtime cpu detection     ${runtime_cpudetect-no}"
3108 if enabled x86; then
3109     echo "${yasmexe}                      ${yasm-no}"
3110     echo "MMX enabled               ${mmx-no}"
3111     echo "MMX2 enabled              ${mmx2-no}"
3112     echo "3DNow! enabled            ${amd3dnow-no}"
3113     echo "3DNow! extended enabled   ${amd3dnowext-no}"
3114     echo "SSE enabled               ${sse-no}"
3115     echo "SSSE3 enabled             ${ssse3-no}"
3116     echo "AVX enabled               ${avx-no}"
3117     echo "CMOV enabled              ${cmov-no}"
3118     echo "CMOV is fast              ${fast_cmov-no}"
3119     echo "EBX available             ${ebx_available-no}"
3120     echo "EBP available             ${ebp_available-no}"
3121     echo "10 operands supported     ${ten_operands-no}"
3122 fi
3123 if enabled arm; then
3124     echo "ARMv5TE enabled           ${armv5te-no}"
3125     echo "ARMv6 enabled             ${armv6-no}"
3126     echo "ARMv6T2 enabled           ${armv6t2-no}"
3127     echo "ARM VFP enabled           ${armvfp-no}"
3128     echo "IWMMXT enabled            ${iwmmxt-no}"
3129     echo "NEON enabled              ${neon-no}"
3130 fi
3131 if enabled mips; then
3132     echo "MMI enabled               ${mmi-no}"
3133 fi
3134 if enabled ppc; then
3135     echo "AltiVec enabled           ${altivec-no}"
3136     echo "PPC 4xx optimizations     ${ppc4xx-no}"
3137     echo "dcbzl available           ${dcbzl-no}"
3138 fi
3139 if enabled sparc; then
3140     echo "VIS enabled               ${vis-no}"
3141 fi
3142 echo "debug symbols             ${debug-no}"
3143 echo "optimizations             ${optimizations-no}"
3144 echo "static                    ${static-no}"
3145 echo "shared                    ${shared-no}"
3146 echo "postprocessing support    ${postproc-no}"
3147 echo "new filter support        ${avfilter-no}"
3148 echo "network support           ${network-no}"
3149 echo "threading support         ${thread_type-no}"
3150 echo "SDL support               ${sdl-no}"
3151 echo "Sun medialib support      ${mlib-no}"
3152 echo "AVISynth enabled          ${avisynth-no}"
3153 echo "frei0r enabled            ${frei0r-no}"
3154 echo "libdc1394 support         ${libdc1394-no}"
3155 echo "libdirac enabled          ${libdirac-no}"
3156 echo "libfaac enabled           ${libfaac-no}"
3157 echo "libgsm enabled            ${libgsm-no}"
3158 echo "libmp3lame enabled        ${libmp3lame-no}"
3159 echo "libnut enabled            ${libnut-no}"
3160 echo "libopencore-amrnb support ${libopencore_amrnb-no}"
3161 echo "libopencore-amrwb support ${libopencore_amrwb-no}"
3162 echo "libopencv support         ${libopencv-no}"
3163 echo "libopenjpeg enabled       ${libopenjpeg-no}"
3164 echo "librtmp enabled           ${librtmp-no}"
3165 echo "libschroedinger enabled   ${libschroedinger-no}"
3166 echo "libspeex enabled          ${libspeex-no}"
3167 echo "libtheora enabled         ${libtheora-no}"
3168 echo "libva enabled             ${vaapi-no}"
3169 echo "libvo-aacenc support      ${libvo_aacenc-no}"
3170 echo "libvo-amrwbenc support    ${libvo_amrwbenc-no}"
3171 echo "libvorbis enabled         ${libvorbis-no}"
3172 echo "libvpx enabled            ${libvpx-no}"
3173 echo "libx264 enabled           ${libx264-no}"
3174 echo "libxavs enabled           ${libxavs-no}"
3175 echo "libxvid enabled           ${libxvid-no}"
3176 echo "zlib enabled              ${zlib-no}"
3177 echo "bzlib enabled             ${bzlib-no}"
3178 echo
3179
3180 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
3181     echo "Enabled ${type}s:"
3182     eval list=\$$(toupper $type)_LIST
3183     print_enabled '_*' $list | sort | pr -r -3 -t
3184     echo
3185 done
3186
3187 license="LGPL version 2.1 or later"
3188 if enabled nonfree; then
3189     license="nonfree and unredistributable"
3190 elif enabled gplv3; then
3191     license="GPL version 3 or later"
3192 elif enabled lgplv3; then
3193     license="LGPL version 3 or later"
3194 elif enabled gpl; then
3195     license="GPL version 2 or later"
3196 fi
3197
3198 echo "License: $license"
3199
3200 echo "Creating config.mak and config.h..."
3201
3202 # build tree in object directory if source path is different from current one
3203 if enabled source_path_used; then
3204     DIRS="
3205         doc
3206         libavcodec
3207         libavcodec/$arch
3208         libavdevice
3209         libavfilter
3210         libavfilter/$arch
3211         libavformat
3212         libavutil
3213         libavutil/$arch
3214         libpostproc
3215         libswscale
3216         libswscale/$arch
3217         tests
3218         tools
3219     "
3220     FILES="
3221         Makefile
3222         common.mak
3223         subdir.mak
3224         doc/texi2pod.pl
3225         libavcodec/Makefile
3226         libavcodec/${arch}/Makefile
3227         libavdevice/Makefile
3228         libavfilter/Makefile
3229         libavfilter/${arch}/Makefile
3230         libavformat/Makefile
3231         libavutil/Makefile
3232         libpostproc/Makefile
3233         libswscale/Makefile
3234     "
3235     map 'mkdir -p $v' $DIRS;
3236     map 'test -f "$source_path/$v" && $ln_s "$source_path/$v" $v' $FILES
3237 fi
3238
3239 config_files="$TMPH config.mak"
3240
3241 cat > config.mak <<EOF
3242 # Automatically generated by configure - do not modify!
3243 ifndef LIBAV_CONFIG_MAK
3244 LIBAV_CONFIG_MAK=1
3245 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
3246 prefix=$prefix
3247 LIBDIR=\$(DESTDIR)$libdir
3248 SHLIBDIR=\$(DESTDIR)$shlibdir
3249 INCDIR=\$(DESTDIR)$incdir
3250 BINDIR=\$(DESTDIR)$bindir
3251 DATADIR=\$(DESTDIR)$datadir
3252 MANDIR=\$(DESTDIR)$mandir
3253 SRC_PATH="$source_path"
3254 SRC_PATH_BARE=$source_path
3255 CC_IDENT=$cc_ident
3256 ARCH=$arch
3257 CC=$cc
3258 AS=$as
3259 LD=$ld
3260 DEPCC=$dep_cc
3261 YASM=$yasmexe
3262 YASMDEP=$yasmexe
3263 AR=$ar
3264 RANLIB=$ranlib
3265 LN_S=$ln_s
3266 CPPFLAGS=$CPPFLAGS
3267 CFLAGS=$CFLAGS
3268 ASFLAGS=$ASFLAGS
3269 CC_O=$CC_O
3270 DLLTOOL=$dlltool
3271 LDFLAGS=$LDFLAGS
3272 FFSERVERLDFLAGS=$FFSERVERLDFLAGS
3273 SHFLAGS=$SHFLAGS
3274 YASMFLAGS=$YASMFLAGS
3275 BUILDSUF=$build_suffix
3276 FULLNAME=$FULLNAME
3277 LIBPREF=$LIBPREF
3278 LIBSUF=$LIBSUF
3279 LIBNAME=$LIBNAME
3280 SLIBPREF=$SLIBPREF
3281 SLIBSUF=$SLIBSUF
3282 EXESUF=$EXESUF
3283 EXTRA_VERSION=$extra_version
3284 DEPFLAGS=$DEPFLAGS
3285 CCDEP=$CCDEP
3286 ASDEP=$ASDEP
3287 CC_DEPFLAGS=$CC_DEPFLAGS
3288 AS_DEPFLAGS=$AS_DEPFLAGS
3289 HOSTCC=$host_cc
3290 HOSTCFLAGS=$host_cflags
3291 HOSTEXESUF=$HOSTEXESUF
3292 HOSTLDFLAGS=$host_ldflags
3293 HOSTLIBS=$host_libs
3294 TARGET_EXEC=$target_exec
3295 TARGET_PATH=$target_path
3296 SDL_LIBS=$sdl_libs
3297 SDL_CFLAGS=$sdl_cflags
3298 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
3299 EXTRALIBS=$extralibs
3300 INSTALL=install
3301 LIBTARGET=${LIBTARGET}
3302 SLIBNAME=${SLIBNAME}
3303 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
3304 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
3305 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
3306 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
3307 SLIB_INSTALL_EXTRA_CMD=${SLIB_INSTALL_EXTRA_CMD}
3308 SLIB_UNINSTALL_EXTRA_CMD=${SLIB_UNINSTALL_EXTRA_CMD}
3309 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
3310 EOF
3311
3312 get_version(){
3313     name=$1
3314     file=$source_path/$2
3315     eval $(grep "#define ${name}_VERSION_M" "$file" | awk '{ print $2"="$3 }')
3316     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
3317     lcname=$(tolower $name)
3318     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
3319     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
3320 }
3321
3322 get_version LIBSWSCALE  libswscale/swscale.h
3323 get_version LIBPOSTPROC libpostproc/postprocess.h
3324 get_version LIBAVCODEC  libavcodec/version.h
3325 get_version LIBAVDEVICE libavdevice/avdevice.h
3326 get_version LIBAVFORMAT libavformat/version.h
3327 get_version LIBAVUTIL   libavutil/avutil.h
3328 get_version LIBAVFILTER libavfilter/avfilter.h
3329
3330 cat > $TMPH <<EOF
3331 /* Automatically generated by configure - do not modify! */
3332 #ifndef LIBAV_CONFIG_H
3333 #define LIBAV_CONFIG_H
3334 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
3335 #define LIBAV_LICENSE "$(c_escape $license)"
3336 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
3337 #define CC_TYPE "$cc_type"
3338 #define CC_VERSION $cc_version
3339 #define restrict $_restrict
3340 #define EXTERN_PREFIX "${extern_prefix}"
3341 #define EXTERN_ASM ${extern_prefix}
3342 #define SLIBSUF "$SLIBSUF"
3343 EOF
3344
3345 test -n "$malloc_prefix" &&
3346     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
3347
3348 if enabled small || disabled optimizations; then
3349     echo "#undef  av_always_inline"  >> $TMPH
3350     if enabled small; then
3351         echo "#define av_always_inline inline"  >> $TMPH
3352     else
3353         echo "#define av_always_inline av_unused"  >> $TMPH
3354     fi
3355 fi
3356
3357 if enabled yasm; then
3358     append config_files $TMPASM
3359     printf '' >$TMPASM
3360 fi
3361
3362 print_config ARCH_   "$config_files" $ARCH_LIST
3363 print_config HAVE_   "$config_files" $HAVE_LIST
3364 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
3365                                      $CONFIG_EXTRA      \
3366                                      $DECODER_LIST      \
3367                                      $ENCODER_LIST      \
3368                                      $HWACCEL_LIST      \
3369                                      $PARSER_LIST       \
3370                                      $BSF_LIST          \
3371                                      $DEMUXER_LIST      \
3372                                      $MUXER_LIST        \
3373                                      $FILTER_LIST       \
3374                                      $PROTOCOL_LIST     \
3375                                      $INDEV_LIST        \
3376                                      $OUTDEV_LIST       \
3377
3378 cat >>config.mak <<EOF
3379 ACODEC_TESTS=$(print_enabled -n _test $ACODEC_TESTS)
3380 VCODEC_TESTS=$(print_enabled -n _test $VCODEC_TESTS)
3381 LAVF_TESTS=$(print_enabled   -n _test $LAVF_TESTS)
3382 LAVFI_TESTS=$(print_enabled  -n _test $LAVFI_TESTS)
3383 SEEK_TESTS=$(print_enabled   -n _test $SEEK_TESTS)
3384 EOF
3385
3386 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
3387 echo "endif # LIBAV_CONFIG_MAK" >> config.mak
3388
3389 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
3390 cp_if_changed $TMPH config.h
3391 touch .config
3392
3393 enabled yasm && cp_if_changed $TMPASM config.asm
3394
3395 cat > $TMPH <<EOF
3396 /* Generated by ffconf */
3397 #ifndef AVUTIL_AVCONFIG_H
3398 #define AVUTIL_AVCONFIG_H
3399 EOF
3400
3401 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
3402
3403 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
3404
3405 cp_if_changed $TMPH libavutil/avconfig.h
3406
3407 test -n "$WARNINGS" && printf "\n$WARNINGS"
3408
3409 # build pkg-config files
3410
3411 pkgconfig_generate(){
3412 name=$1
3413 shortname=${name#lib}${build_suffix}
3414 comment=$2
3415 version=$3
3416 libs=$4
3417 requires=$5
3418 enabled ${name#lib} || return 0
3419 cat <<EOF > $name/$name.pc
3420 prefix=$prefix
3421 exec_prefix=\${prefix}
3422 libdir=$libdir
3423 includedir=$incdir
3424
3425 Name: $name
3426 Description: $comment
3427 Version: $version
3428 Requires: $(enabled shared || echo $requires)
3429 Requires.private: $(enabled shared && echo $requires)
3430 Conflicts:
3431 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
3432 Libs.private: $(enabled shared && echo $libs)
3433 Cflags: -I\${includedir}
3434 EOF
3435 cat <<EOF > $name/$name-uninstalled.pc
3436 prefix=
3437 exec_prefix=
3438 libdir=\${pcfiledir}
3439 includedir=${source_path}
3440
3441 Name: $name
3442 Description: $comment
3443 Version: $version
3444 Requires: $requires
3445 Conflicts:
3446 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
3447 Cflags: -I\${includedir}
3448 EOF
3449 }
3450
3451 pkgconfig_generate libavutil "Libav utility library" "$LIBAVUTIL_VERSION" "$LIBM"
3452 pkgconfig_generate libavcodec "Libav codec library" "$LIBAVCODEC_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
3453 pkgconfig_generate libavformat "Libav container format library" "$LIBAVFORMAT_VERSION" "$extralibs" "libavcodec = $LIBAVCODEC_VERSION"
3454 pkgconfig_generate libavdevice "Libav device handling library" "$LIBAVDEVICE_VERSION" "$extralibs" "libavformat = $LIBAVFORMAT_VERSION"
3455 pkgconfig_generate libavfilter "Libav video filtering library" "$LIBAVFILTER_VERSION" "$extralibs"
3456 pkgconfig_generate libpostproc "Libav post processing library" "$LIBPOSTPROC_VERSION" "" "libavutil = $LIBAVUTIL_VERSION"
3457 pkgconfig_generate libswscale "Libav image rescaling library" "$LIBSWSCALE_VERSION" "$LIBM" "libavutil = $LIBAVUTIL_VERSION"