Silence a warning if pkg_config is not installed.
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # FFmpeg configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken FFmpeg."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 show_help(){
58 cat <<EOF
59 Usage: configure [options]
60 Options: [defaults in brackets after descriptions]
61
62 Standard options:
63   --help                   print this message
64   --logfile=FILE           log tests and output to FILE [config.log]
65   --disable-logging        do not log configure debug information
66   --prefix=PREFIX          install in PREFIX [$prefix]
67   --bindir=DIR             install binaries in DIR [PREFIX/bin]
68   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
69   --libdir=DIR             install libs in DIR [PREFIX/lib]
70   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
71   --incdir=DIR             install includes in DIR [PREFIX/include]
72   --mandir=DIR             install man page in DIR [PREFIX/share/man]
73
74 Configuration options:
75   --disable-static         do not build static libraries [no]
76   --enable-shared          build shared libraries [no]
77   --enable-gpl             allow use of GPL code, the resulting libs
78                            and binaries will be under GPL [no]
79   --enable-version3        upgrade (L)GPL to version 3 [no]
80   --enable-nonfree         allow use of nonfree code, the resulting libs
81                            and binaries will be unredistributable [no]
82   --disable-doc            do not build documentation
83   --disable-ffmpeg         disable ffmpeg build
84   --disable-ffplay         disable ffplay build
85   --disable-ffprobe        disable ffprobe build
86   --disable-ffserver       disable ffserver build
87   --disable-avdevice       disable libavdevice build
88   --disable-avcodec        disable libavcodec build
89   --disable-avformat       disable libavformat build
90   --disable-swscale        disable libswscale build
91   --enable-postproc        enable GPLed postprocessing support [no]
92   --disable-avfilter       disable video filter support [no]
93   --disable-pthreads       disable pthreads [auto]
94   --enable-w32threads      use Win32 threads [no]
95   --enable-x11grab         enable X11 grabbing [no]
96   --disable-network        disable network support [no]
97   --disable-mpegaudio-hp   faster (but less accurate) MPEG audio decoding [no]
98   --enable-gray            enable full grayscale support (slower color)
99   --disable-swscale-alpha  disable alpha channel support in swscale
100   --disable-fastdiv        disable table-based division
101   --enable-small           optimize for size instead of speed
102   --disable-aandct         disable AAN DCT code
103   --disable-dct            disable DCT code
104   --disable-fft            disable FFT code
105   --disable-golomb         disable Golomb code
106   --disable-huffman        disable Huffman code
107   --disable-lpc            disable LPC code
108   --disable-mdct           disable MDCT code
109   --disable-rdft           disable RDFT code
110   --disable-vaapi          disable VAAPI code
111   --disable-vdpau          disable VDPAU code
112   --disable-dxva2          disable DXVA2 code
113   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
114   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
115   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
116   --disable-everything     disable all components listed below
117   --disable-encoder=NAME   disable encoder NAME
118   --enable-encoder=NAME    enable encoder NAME
119   --disable-encoders       disable all encoders
120   --disable-decoder=NAME   disable decoder NAME
121   --enable-decoder=NAME    enable decoder NAME
122   --disable-decoders       disable all decoders
123   --disable-hwaccel=NAME   disable hwaccel NAME
124   --enable-hwaccel=NAME    enable hwaccel NAME
125   --disable-hwaccels       disable all hwaccels
126   --disable-muxer=NAME     disable muxer NAME
127   --enable-muxer=NAME      enable muxer NAME
128   --disable-muxers         disable all muxers
129   --disable-demuxer=NAME   disable demuxer NAME
130   --enable-demuxer=NAME    enable demuxer NAME
131   --disable-demuxers       disable all demuxers
132   --enable-parser=NAME     enable parser NAME
133   --disable-parser=NAME    disable parser NAME
134   --disable-parsers        disable all parsers
135   --enable-bsf=NAME        enable bitstream filter NAME
136   --disable-bsf=NAME       disable bitstream filter NAME
137   --disable-bsfs           disable all bitstream filters
138   --enable-protocol=NAME   enable protocol NAME
139   --disable-protocol=NAME  disable protocol NAME
140   --disable-protocols      disable all protocols
141   --disable-indev=NAME     disable input device NAME
142   --disable-outdev=NAME    disable output device NAME
143   --disable-indevs         disable input devices
144   --disable-outdevs        disable output devices
145   --disable-devices        disable all devices
146   --enable-filter=NAME     enable filter NAME
147   --disable-filter=NAME    disable filter NAME
148   --disable-filters        disable all filters
149   --list-decoders          show all available decoders
150   --list-encoders          show all available encoders
151   --list-hwaccels          show all available hardware accelerators
152   --list-muxers            show all available muxers
153   --list-demuxers          show all available demuxers
154   --list-parsers           show all available parsers
155   --list-protocols         show all available protocols
156   --list-bsfs              show all available bitstream filters
157   --list-indevs            show all available input devices
158   --list-outdevs           show all available output devices
159   --list-filters           show all available filters
160
161 External library support:
162   --enable-avisynth        enable reading of AVISynth script files [no]
163   --enable-bzlib           enable bzlib [autodetect]
164   --enable-libcelt         enable CELT/Opus decoding via libcelt [no]
165   --enable-frei0r          enable frei0r video filtering
166   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
167   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
168   --enable-libopencv       enable video filtering via libopencv [no]
169   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
170                            and libraw1394 [no]
171   --enable-libdirac        enable Dirac support via libdirac [no]
172   --enable-libfaac         enable FAAC support via libfaac [no]
173   --enable-libfreetype     enable libfreetype [no]
174   --enable-libgsm          enable GSM support via libgsm [no]
175   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
176   --enable-libnut          enable NUT (de)muxing via libnut,
177                            native (de)muxer exists [no]
178   --enable-libopenjpeg     enable JPEG 2000 decoding via OpenJPEG [no]
179   --enable-librtmp         enable RTMP[E] support via librtmp [no]
180   --enable-libschroedinger enable Dirac support via libschroedinger [no]
181   --enable-libspeex        enable Speex decoding via libspeex [no]
182   --enable-libtheora       enable Theora encoding via libtheora [no]
183   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
184   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
185   --enable-libvorbis       enable Vorbis encoding via libvorbis,
186                            native implementation exists [no]
187   --enable-libvpx          enable VP8 support via libvpx [no]
188   --enable-libx264         enable H.264 encoding via x264 [no]
189   --enable-libxavs         enable AVS encoding via xavs [no]
190   --enable-libxvid         enable Xvid encoding via xvidcore,
191                            native MPEG-4/Xvid encoder exists [no]
192   --enable-mlib            enable Sun medialib [no]
193   --enable-zlib            enable zlib [autodetect]
194
195 Advanced options (experts only):
196   --source-path=PATH       path to source code [$source_path]
197   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
198   --enable-cross-compile   assume a cross-compiler is used
199   --sysroot=PATH           root of cross-build tree
200   --sysinclude=PATH        location of cross-build system headers
201   --target-os=OS           compiler targets OS [$target_os]
202   --target-exec=CMD        command to run executables on target
203   --target-path=DIR        path to view of build directory on target
204   --nm=NM                  use nm tool
205   --ar=AR                  use archive tool AR [$ar_default]
206   --as=AS                  use assembler AS [$as_default]
207   --cc=CC                  use C compiler CC [$cc_default]
208   --ld=LD                  use linker LD
209   --host-cc=HOSTCC         use host C compiler HOSTCC
210   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
211   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
212   --host-libs=HLIBS        use libs HLIBS when linking for host
213   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
214   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
215   --extra-libs=ELIBS       add ELIBS [$ELIBS]
216   --extra-version=STRING   version string suffix []
217   --build-suffix=SUFFIX    library name suffix []
218   --arch=ARCH              select architecture [$arch]
219   --cpu=CPU                select the minimum required CPU (affects
220                            instruction selection, may crash on older CPUs)
221   --disable-asm            disable all assembler optimizations
222   --disable-altivec        disable AltiVec optimizations
223   --disable-amd3dnow       disable 3DNow! optimizations
224   --disable-amd3dnowext    disable 3DNow! extended optimizations
225   --disable-mmx            disable MMX optimizations
226   --disable-mmx2           disable MMX2 optimizations
227   --disable-sse            disable SSE optimizations
228   --disable-ssse3          disable SSSE3 optimizations
229   --disable-avx            disable AVX optimizations
230   --disable-armv5te        disable armv5te optimizations
231   --disable-armv6          disable armv6 optimizations
232   --disable-armv6t2        disable armv6t2 optimizations
233   --disable-armvfp         disable ARM VFP optimizations
234   --disable-iwmmxt         disable iwmmxt optimizations
235   --disable-mmi            disable MMI optimizations
236   --disable-neon           disable neon optimizations
237   --disable-vis            disable VIS optimizations
238   --disable-yasm           disable use of yasm assembler
239   --enable-pic             build position-independent code
240   --malloc-prefix=PFX      prefix malloc and related names with PFX
241   --enable-sram            allow use of on-chip SRAM
242   --disable-symver         disable symbol versioning
243
244 Developer options (useful when working on FFmpeg itself):
245   --disable-debug          disable debugging symbols
246   --enable-debug=LEVEL     set the debug level [$debuglevel]
247   --disable-optimizations  disable compiler optimizations
248   --enable-extra-warnings  enable more compiler warnings
249   --disable-stripping      disable stripping of executables and shared libraries
250   --samples=PATH           location of test samples for FATE, if not set use
251                            \$FATE_SAMPLES at make invocation time.
252
253 NOTE: Object files are built at the place where configure is launched.
254 EOF
255   exit 0
256 }
257
258 quotes='""'
259
260 log(){
261     echo "$@" >> $logfile
262 }
263
264 log_file(){
265     log BEGIN $1
266     pr -n -t $1 >> $logfile
267     log END $1
268 }
269
270 echolog(){
271     log "$@"
272     echo "$@"
273 }
274
275 warn(){
276     log "WARNING: $*"
277     WARNINGS="${WARNINGS}WARNING: $*\n"
278 }
279
280 die(){
281     echolog "$@"
282     cat <<EOF
283
284 If you think configure made a mistake, make sure you are using the latest
285 version from Git.  If the latest version fails, report the problem to the
286 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
287 EOF
288     if disabled logging; then
289         cat <<EOF
290 Rerun configure with logging enabled (do not use --disable-logging), and
291 include the log this produces with your report.
292 EOF
293     else
294 cat <<EOF
295 Include the log file "$logfile" produced by configure as this will help
296 solving the problem.
297 EOF
298     fi
299     exit 1
300 }
301
302 # Avoid locale weirdness, besides we really just want to translate ASCII.
303 toupper(){
304     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
305 }
306
307 tolower(){
308     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
309 }
310
311 c_escape(){
312     echo "$*" | sed 's/["\\]/\\\0/g'
313 }
314
315 sh_quote(){
316     v=$(echo "$1" | sed "s/'/'\\\\''/g")
317     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
318     echo "$v"
319 }
320
321 cleanws(){
322     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
323 }
324
325 filter(){
326     pat=$1
327     shift
328     for v; do
329         eval "case $v in $pat) echo $v ;; esac"
330     done
331 }
332
333 filter_out(){
334     pat=$1
335     shift
336     for v; do
337         eval "case $v in $pat) ;; *) echo $v ;; esac"
338     done
339 }
340
341 map(){
342     m=$1
343     shift
344     for v; do eval $m; done
345 }
346
347 set_all(){
348     value=$1
349     shift
350     for var in $*; do
351         eval $var=$value
352     done
353 }
354
355 set_weak(){
356     value=$1
357     shift
358     for var; do
359         eval : \${$var:=$value}
360     done
361 }
362
363 set_safe(){
364     var=$1
365     shift
366     eval $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')='$*'
367 }
368
369 get_safe(){
370     eval echo \$$(echo "$1" | sed 's/[^A-Za-z0-9_]/_/g')
371 }
372
373 pushvar(){
374     for var in $*; do
375         eval level=\${${var}_level:=0}
376         eval ${var}_${level}="\$$var"
377         eval ${var}_level=$(($level+1))
378     done
379 }
380
381 popvar(){
382     for var in $*; do
383         eval level=\${${var}_level:-0}
384         test $level = 0 && continue
385         eval level=$(($level-1))
386         eval $var="\${${var}_${level}}"
387         eval ${var}_level=$level
388         eval unset ${var}_${level}
389     done
390 }
391
392 enable(){
393     set_all yes $*
394 }
395
396 disable(){
397     set_all no $*
398 }
399
400 enable_weak(){
401     set_weak yes $*
402 }
403
404 disable_weak(){
405     set_weak no $*
406 }
407
408 enable_safe(){
409     for var; do
410         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
411     done
412 }
413
414 disable_safe(){
415     for var; do
416         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
417     done
418 }
419
420 do_enable_deep(){
421     for var; do
422         enabled $var && continue
423         eval sel="\$${var}_select"
424         eval sgs="\$${var}_suggest"
425         pushvar var sgs
426         enable_deep $sel
427         popvar sgs
428         enable_deep_weak $sgs
429         popvar var
430     done
431 }
432
433 enable_deep(){
434     do_enable_deep $*
435     enable $*
436 }
437
438 enable_deep_weak(){
439     do_enable_deep $*
440     enable_weak $*
441 }
442
443 enabled(){
444     test "${1#!}" = "$1" && op== || op=!=
445     eval test "x\$${1#!}" $op "xyes"
446 }
447
448 disabled(){
449     test "${1#!}" = "$1" && op== || op=!=
450     eval test "x\$${1#!}" $op "xno"
451 }
452
453 enabled_all(){
454     for opt; do
455         enabled $opt || return 1
456     done
457 }
458
459 disabled_all(){
460     for opt; do
461         disabled $opt || return 1
462     done
463 }
464
465 enabled_any(){
466     for opt; do
467         enabled $opt && return 0
468     done
469 }
470
471 disabled_any(){
472     for opt; do
473         disabled $opt && return 0
474     done
475     return 1
476 }
477
478 set_default(){
479     for opt; do
480         eval : \${$opt:=\$${opt}_default}
481     done
482 }
483
484 is_in(){
485     value=$1
486     shift
487     for var in $*; do
488         [ $var = $value ] && return 0
489     done
490     return 1
491 }
492
493 check_deps(){
494     for cfg; do
495         cfg="${cfg#!}"
496         enabled ${cfg}_checking && die "Circular dependency for $cfg."
497         disabled ${cfg}_checking && continue
498         enable ${cfg}_checking
499
500         eval dep_all="\$${cfg}_deps"
501         eval dep_any="\$${cfg}_deps_any"
502         eval dep_sel="\$${cfg}_select"
503         eval dep_sgs="\$${cfg}_suggest"
504         eval dep_ifa="\$${cfg}_if"
505         eval dep_ifn="\$${cfg}_if_any"
506
507         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
508         check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
509         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
510
511         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
512         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
513         enabled_all  $dep_all || disable $cfg
514         enabled_any  $dep_any || disable $cfg
515         disabled_any $dep_sel && disable $cfg
516
517         if enabled $cfg; then
518             eval dep_extralibs="\$${cfg}_extralibs"
519             test -n "$dep_extralibs" && add_extralibs $dep_extralibs
520             enable_deep $dep_sel
521             enable_deep_weak $dep_sgs
522         fi
523
524         disable ${cfg}_checking
525     done
526 }
527
528 print_config_h(){
529     enabled $1 && v=1 || v=0
530     echo "#define $2 $v"
531 }
532
533 print_config_mak(){
534     enabled $1 && v= || v=!
535     echo "$v$2=yes"
536 }
537
538 print_config_asm(){
539     enabled $1 && echo "%define $2"
540 }
541
542 print_config(){
543     pfx=$1
544     files=$2
545     shift 2
546     for cfg; do
547         ucname="$(toupper $cfg)"
548         for f in $files; do
549             "print_config_${f##*.}" $cfg ${pfx}${ucname} >>$f
550         done
551     done
552 }
553
554 print_enabled(){
555     test "$1" = -n && end=" " && shift || end="\n"
556     suf=$1
557     shift
558     for v; do
559         enabled $v && printf "%s$end" ${v%$suf};
560     done
561 }
562
563 append(){
564     var=$1
565     shift
566     eval "$var=\"\$$var $*\""
567 }
568
569 prepend(){
570     var=$1
571     shift
572     eval "$var=\"$* \$$var\""
573 }
574
575 add_cppflags(){
576     append CPPFLAGS $($filter_cppflags "$@")
577 }
578
579 add_cflags(){
580     append CFLAGS $($filter_cflags "$@")
581 }
582
583 add_asflags(){
584     append ASFLAGS $($filter_asflags "$@")
585 }
586
587 add_ldflags(){
588     append LDFLAGS "$@"
589 }
590
591 add_extralibs(){
592     prepend extralibs "$@"
593 }
594
595 check_cmd(){
596     log "$@"
597     "$@" >> $logfile 2>&1
598 }
599
600 check_cc(){
601     log check_cc "$@"
602     cat > $TMPC
603     log_file $TMPC
604     check_cmd $cc $CPPFLAGS $CFLAGS "$@" -c -o $TMPO $TMPC
605 }
606
607 check_cpp(){
608     log check_cpp "$@"
609     cat > $TMPC
610     log_file $TMPC
611     check_cmd $cc $CPPFLAGS $CFLAGS "$@" -E -o $TMPO $TMPC
612 }
613
614 check_as(){
615     log check_as "$@"
616     cat > $TMPC
617     log_file $TMPC
618     check_cmd $as $CPPFLAGS $ASFLAGS "$@" -c -o $TMPO $TMPC
619 }
620
621 check_asm(){
622     log check_asm "$@"
623     name="$1"
624     code="$2"
625     shift 2
626     disable $name
627     check_as "$@" <<EOF && enable $name
628 void foo(void){ __asm__ volatile($code); }
629 EOF
630 }
631
632 check_yasm(){
633     log check_yasm "$@"
634     echo "$1" > $TMPS
635     log_file $TMPS
636     shift 1
637     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
638 }
639
640 check_ld(){
641     log check_ld "$@"
642     flags=''
643     libs=''
644     for f; do
645         test "${f}" = "${f#-l}" && flags="$flags $f" || libs="$libs $f"
646     done
647     check_cc $($filter_cflags $flags) || return
648     check_cmd $ld $LDFLAGS $flags -o $TMPE $TMPO $libs $extralibs
649 }
650
651 check_cppflags(){
652     log check_cppflags "$@"
653     set -- $($filter_cppflags "$@")
654     check_cc "$@" <<EOF && append CPPFLAGS "$@"
655 int x;
656 EOF
657 }
658
659 check_cflags(){
660     log check_cflags "$@"
661     set -- $($filter_cflags "$@")
662     check_cc "$@" <<EOF && append CFLAGS "$@"
663 int x;
664 EOF
665 }
666
667 test_ldflags(){
668     log test_ldflags "$@"
669     check_ld "$@" <<EOF
670 int main(void){ return 0; }
671 EOF
672 }
673
674 check_ldflags(){
675     log check_ldflags "$@"
676     test_ldflags "$@" && add_ldflags "$@"
677 }
678
679 check_header(){
680     log check_header "$@"
681     header=$1
682     shift
683     disable_safe $header
684     check_cpp "$@" <<EOF && enable_safe $header
685 #include <$header>
686 int x;
687 EOF
688 }
689
690 check_func(){
691     log check_func "$@"
692     func=$1
693     shift
694     disable $func
695     check_ld "$@" <<EOF && enable $func
696 extern int $func();
697 int main(void){ $func(); }
698 EOF
699 }
700
701 check_mathfunc(){
702     log check_mathfunc "$@"
703     func=$1
704     shift
705     disable $func
706     check_ld "$@" <<EOF && enable $func
707 #include <math.h>
708 float foo(float f) { return $func(f); }
709 int main(void){ return 0; }
710 EOF
711 }
712
713 check_func_headers(){
714     log check_func_headers "$@"
715     headers=$1
716     funcs=$2
717     shift 2
718     {
719         for hdr in $headers; do
720             echo "#include <$hdr>"
721         done
722         for func in $funcs; do
723             echo "long check_$func(void) { return (long) $func; }"
724         done
725         echo "int main(void) { return 0; }"
726     } | check_ld "$@" && enable $funcs && enable_safe $headers
727 }
728
729 check_cpp_condition(){
730     log check_cpp_condition "$@"
731     header=$1
732     condition=$2
733     shift 2
734     check_cpp $($filter_cppflags "$@") <<EOF
735 #include <$header>
736 #if !($condition)
737 #error "unsatisfied condition: $condition"
738 #endif
739 EOF
740 }
741
742 check_lib(){
743     log check_lib "$@"
744     header="$1"
745     func="$2"
746     shift 2
747     check_header $header && check_func $func "$@" && add_extralibs "$@"
748 }
749
750 check_lib2(){
751     log check_lib2 "$@"
752     headers="$1"
753     funcs="$2"
754     shift 2
755     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
756 }
757
758 check_pkg_config(){
759     log check_pkg_config "$@"
760     pkg="$1"
761     headers="$2"
762     funcs="$3"
763     shift 3
764     $pkg_config --exists $pkg 2>/dev/null || return
765     pkg_cflags=$($pkg_config --cflags $pkg)
766     pkg_libs=$($pkg_config --libs $pkg)
767     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
768         set_safe ${pkg}_cflags $pkg_cflags   &&
769         set_safe ${pkg}_libs   $pkg_libs
770 }
771
772 check_exec(){
773     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
774 }
775
776 check_exec_crash(){
777     code=$(cat)
778
779     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
780     # are safe but may not be available everywhere.  Thus we use
781     # raise(SIGTERM) instead.  The check is run in a subshell so we
782     # can redirect the "Terminated" message from the shell.  SIGBUS
783     # is not defined by standard C so it is used conditionally.
784
785     (check_exec "$@") >> $logfile 2>&1 <<EOF
786 #include <signal.h>
787 static void sighandler(int sig){
788     raise(SIGTERM);
789 }
790 int main(void){
791     signal(SIGILL, sighandler);
792     signal(SIGFPE, sighandler);
793     signal(SIGSEGV, sighandler);
794 #ifdef SIGBUS
795     signal(SIGBUS, sighandler);
796 #endif
797     { $code }
798 }
799 EOF
800 }
801
802 check_type(){
803     log check_type "$@"
804     headers=$1
805     type=$2
806     shift 2
807     disable_safe "$type"
808     incs=""
809     for hdr in $headers; do
810         incs="$incs
811 #include <$hdr>"
812     done
813     check_cc "$@" <<EOF && enable_safe "$type"
814 $incs
815 $type v;
816 EOF
817 }
818
819 check_struct(){
820     log check_type "$@"
821     headers=$1
822     struct=$2
823     member=$3
824     shift 3
825     disable_safe "${struct}_${member}"
826     incs=""
827     for hdr in $headers; do
828         incs="$incs
829 #include <$hdr>"
830     done
831     check_cc "$@" <<EOF && enable_safe "${struct}_${member}"
832 $incs
833 const void *p = &(($struct *)0)->$member;
834 EOF
835 }
836
837 require(){
838     name="$1"
839     header="$2"
840     func="$3"
841     shift 3
842     check_lib $header $func "$@" || die "ERROR: $name not found"
843 }
844
845 require2(){
846     name="$1"
847     headers="$2"
848     func="$3"
849     shift 3
850     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
851 }
852
853 require_pkg_config(){
854     pkg="$1"
855     check_pkg_config "$@" || die "ERROR: $pkg not found"
856     add_cflags    $(get_safe ${pkg}_cflags)
857     add_extralibs $(get_safe ${pkg}_libs)
858 }
859
860 check_host_cc(){
861     log check_host_cc "$@"
862     cat > $TMPC
863     log_file $TMPC
864     check_cmd $host_cc $host_cflags "$@" -c -o $TMPO $TMPC
865 }
866
867 check_host_cflags(){
868     log check_host_cflags "$@"
869     check_host_cc "$@" <<EOF && append host_cflags "$@"
870 int x;
871 EOF
872 }
873
874 apply(){
875     file=$1
876     shift
877     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
878 }
879
880 cp_if_changed(){
881     cmp -s "$1" "$2" &&
882         echo "$2 is unchanged" ||
883         cp -f "$1" "$2"
884 }
885
886 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
887 # system-dependent things.
888
889 COMPONENT_LIST="
890     bsfs
891     decoders
892     demuxers
893     encoders
894     filters
895     hwaccels
896     indevs
897     muxers
898     outdevs
899     parsers
900     protocols
901 "
902
903 CONFIG_LIST="
904     $COMPONENT_LIST
905     aandct
906     ac3dsp
907     avcodec
908     avdevice
909     avfilter
910     avformat
911     avisynth
912     bzlib
913     crystalhd
914     dct
915     doc
916     dwt
917     dxva2
918     fastdiv
919     ffmpeg
920     ffplay
921     ffprobe
922     ffserver
923     fft
924     frei0r
925     golomb
926     gpl
927     gray
928     h264dsp
929     h264pred
930     hardcoded_tables
931     huffman
932     libcelt
933     libdc1394
934     libdirac
935     libfaac
936     libfreetype
937     libgsm
938     libmp3lame
939     libnut
940     libopencore_amrnb
941     libopencore_amrwb
942     libopencv
943     libopenjpeg
944     librtmp
945     libschroedinger
946     libspeex
947     libtheora
948     libvo_aacenc
949     libvo_amrwbenc
950     libvorbis
951     libvpx
952     libx264
953     libxavs
954     libxvid
955     lpc
956     lsp
957     mdct
958     memalign_hack
959     mlib
960     mpegaudio_hp
961     network
962     nonfree
963     pic
964     postproc
965     rdft
966     rtpdec
967     runtime_cpudetect
968     shared
969     sinewin
970     small
971     sram
972     static
973     swscale
974     swscale_alpha
975     vaapi
976     vdpau
977     version3
978     x11grab
979     zlib
980 "
981
982 THREADS_LIST='
983     pthreads
984     w32threads
985 '
986
987 ARCH_LIST='
988     alpha
989     arm
990     avr32
991     avr32_ap
992     avr32_uc
993     bfin
994     ia64
995     m68k
996     mips
997     mips64
998     parisc
999     ppc
1000     ppc64
1001     s390
1002     sh4
1003     sparc
1004     sparc64
1005     tomi
1006     x86
1007     x86_32
1008     x86_64
1009 '
1010
1011 ARCH_EXT_LIST='
1012     altivec
1013     amd3dnow
1014     amd3dnowext
1015     armv5te
1016     armv6
1017     armv6t2
1018     armvfp
1019     avx
1020     iwmmxt
1021     mmi
1022     mmx
1023     mmx2
1024     neon
1025     ppc4xx
1026     sse
1027     ssse3
1028     vis
1029 '
1030
1031 HAVE_LIST_PUB='
1032     bigendian
1033     fast_unaligned
1034 '
1035
1036 HAVE_LIST="
1037     $ARCH_EXT_LIST
1038     $HAVE_LIST_PUB
1039     $THREADS_LIST
1040     aligned_stack
1041     alsa_asoundlib_h
1042     altivec_h
1043     arpa_inet_h
1044     attribute_may_alias
1045     attribute_packed
1046     bswap
1047     closesocket
1048     cmov
1049     dcbzl
1050     dev_bktr_ioctl_bt848_h
1051     dev_bktr_ioctl_meteor_h
1052     dev_ic_bt8xx_h
1053     dev_video_meteor_ioctl_meteor_h
1054     dev_video_bktr_ioctl_bt848_h
1055     dlfcn_h
1056     dlopen
1057     dos_paths
1058     ebp_available
1059     ebx_available
1060     exp2
1061     exp2f
1062     fast_64bit
1063     fast_clz
1064     fast_cmov
1065     fcntl
1066     fork
1067     getaddrinfo
1068     gethrtime
1069     GetProcessMemoryInfo
1070     GetProcessTimes
1071     getrusage
1072     gnu_as
1073     struct_rusage_ru_maxrss
1074     ibm_asm
1075     inet_aton
1076     inline_asm
1077     isatty
1078     kbhit
1079     ldbrx
1080     libdc1394_1
1081     libdc1394_2
1082     llrint
1083     llrintf
1084     local_aligned_16
1085     local_aligned_8
1086     localtime_r
1087     log2
1088     log2f
1089     loongson
1090     lrint
1091     lrintf
1092     lzo1x_999_compress
1093     machine_ioctl_bt848_h
1094     machine_ioctl_meteor_h
1095     malloc_h
1096     MapViewOfFile
1097     memalign
1098     mkstemp
1099     mmap
1100     pld
1101     posix_memalign
1102     round
1103     roundf
1104     sdl
1105     sdl_video_size
1106     setmode
1107     sndio_h
1108     socklen_t
1109     soundcard_h
1110     poll_h
1111     setrlimit
1112     strerror_r
1113     strtok_r
1114     struct_addrinfo
1115     struct_ipv6_mreq
1116     struct_sockaddr_in6
1117     struct_sockaddr_sa_len
1118     struct_sockaddr_storage
1119     symver
1120     symver_gnu_asm
1121     symver_asm_label
1122     sys_mman_h
1123     sys_resource_h
1124     sys_select_h
1125     sys_soundcard_h
1126     sys_videoio_h
1127     ten_operands
1128     termios_h
1129     threads
1130     trunc
1131     truncf
1132     vfp_args
1133     VirtualAlloc
1134     winsock2_h
1135     xform_asm
1136     xmm_clobbers
1137     yasm
1138 "
1139
1140 # options emitted with CONFIG_ prefix but not available on command line
1141 CONFIG_EXTRA="
1142     avutil
1143     gplv3
1144     lgplv3
1145 "
1146
1147 CMDLINE_SELECT="
1148     $ARCH_EXT_LIST
1149     $CONFIG_LIST
1150     $THREADS_LIST
1151     asm
1152     cross_compile
1153     debug
1154     extra_warnings
1155     logging
1156     optimizations
1157     stripping
1158     symver
1159     yasm
1160 "
1161
1162 PATHS_LIST='
1163     bindir
1164     datadir
1165     incdir
1166     libdir
1167     mandir
1168     prefix
1169     shlibdir
1170 '
1171
1172 CMDLINE_SET="
1173     $PATHS_LIST
1174     ar
1175     arch
1176     as
1177     build_suffix
1178     cc
1179     cpu
1180     cross_prefix
1181     dep_cc
1182     extra_version
1183     host_cc
1184     host_cflags
1185     host_ldflags
1186     host_libs
1187     host_os
1188     ld
1189     logfile
1190     malloc_prefix
1191     nm
1192     pkg_config
1193     samples
1194     source_path
1195     strip
1196     sysinclude
1197     sysroot
1198     target_exec
1199     target_os
1200     target_path
1201 "
1202
1203 CMDLINE_APPEND="
1204     extra_cflags
1205 "
1206
1207 # code dependency declarations
1208
1209 # architecture extensions
1210
1211 armv5te_deps="arm"
1212 armv6_deps="arm"
1213 armv6t2_deps="arm"
1214 armvfp_deps="arm"
1215 iwmmxt_deps="arm"
1216 neon_deps="arm"
1217
1218 mmi_deps="mips"
1219
1220 altivec_deps="ppc"
1221 ppc4xx_deps="ppc"
1222
1223 vis_deps="sparc"
1224
1225 x86_64_suggest="cmov fast_cmov"
1226 amd3dnow_deps="mmx"
1227 amd3dnowext_deps="amd3dnow"
1228 mmx_deps="x86"
1229 mmx2_deps="mmx"
1230 sse_deps="mmx"
1231 ssse3_deps="sse"
1232 avx_deps="ssse3"
1233
1234 aligned_stack_if_any="ppc x86"
1235 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1236 fast_clz_if_any="alpha armv5te avr32 mips ppc x86"
1237 fast_unaligned_if_any="armv6 ppc x86"
1238
1239 need_memalign="altivec neon sse"
1240 inline_asm_deps="!tms470"
1241
1242 symver_if_any="symver_asm_label symver_gnu_asm"
1243
1244 # subsystems
1245 dct_select="rdft"
1246 mdct_select="fft"
1247 rdft_select="fft"
1248
1249 # decoders / encoders / hardware accelerators
1250 aac_decoder_select="mdct sinewin"
1251 aac_encoder_select="mdct sinewin"
1252 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1253 ac3_decoder_select="mdct ac3dsp ac3_parser"
1254 ac3_encoder_select="mdct ac3dsp"
1255 ac3_fixed_encoder_select="mdct ac3dsp"
1256 alac_encoder_select="lpc"
1257 amrnb_decoder_select="lsp"
1258 amrwb_decoder_select="lsp"
1259 atrac1_decoder_select="mdct sinewin"
1260 atrac3_decoder_select="mdct"
1261 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1262 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1263 cavs_decoder_select="golomb"
1264 cook_decoder_select="mdct sinewin"
1265 cscd_decoder_suggest="zlib"
1266 dca_decoder_select="mdct"
1267 dnxhd_encoder_select="aandct"
1268 dxa_decoder_select="zlib"
1269 eac3_decoder_select="ac3_decoder"
1270 eamad_decoder_select="aandct"
1271 eatgq_decoder_select="aandct"
1272 eatqi_decoder_select="aandct"
1273 ffv1_decoder_select="golomb"
1274 flac_decoder_select="golomb"
1275 flac_encoder_select="golomb lpc"
1276 flashsv_decoder_select="zlib"
1277 flashsv_encoder_select="zlib"
1278 flashsv2_encoder_select="zlib"
1279 flv_decoder_select="h263_decoder"
1280 flv_encoder_select="h263_encoder"
1281 fraps_decoder_select="huffman"
1282 h261_encoder_select="aandct"
1283 h263_decoder_select="h263_parser"
1284 h263_encoder_select="aandct"
1285 h263_vaapi_hwaccel_select="vaapi h263_decoder"
1286 h263i_decoder_select="h263_decoder"
1287 h263p_encoder_select="h263_encoder"
1288 h264_decoder_select="golomb h264dsp h264pred"
1289 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
1290 h264_dxva2_hwaccel_deps="dxva2api_h"
1291 h264_dxva2_hwaccel_select="dxva2 h264_decoder"
1292 h264_vaapi_hwaccel_select="vaapi"
1293 h264_vdpau_decoder_select="vdpau h264_decoder"
1294 imc_decoder_select="fft mdct sinewin"
1295 jpegls_decoder_select="golomb"
1296 jpegls_encoder_select="golomb"
1297 ljpeg_encoder_select="aandct"
1298 loco_decoder_select="golomb"
1299 mjpeg_encoder_select="aandct"
1300 mlp_decoder_select="mlp_parser"
1301 mp1float_decoder_select="dct"
1302 mp2float_decoder_select="dct"
1303 mp3adufloat_decoder_select="dct"
1304 mp3float_decoder_select="dct"
1305 mp3on4float_decoder_select="dct"
1306 mpeg1video_encoder_select="aandct"
1307 mpeg2video_encoder_select="aandct"
1308 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1309 mpeg4_encoder_select="h263_encoder"
1310 mpeg_vdpau_decoder_select="vdpau mpegvideo_decoder"
1311 mpeg1_vdpau_decoder_select="vdpau mpeg1video_decoder"
1312 mpeg1_vdpau_hwaccel_select="vdpau mpeg1video_decoder"
1313 mpeg2_crystalhd_decoder_select="crystalhd"
1314 mpeg2_dxva2_hwaccel_deps="dxva2api_h"
1315 mpeg2_dxva2_hwaccel_select="dxva2 mpeg2video_decoder"
1316 mpeg2_vdpau_hwaccel_select="vdpau mpeg2video_decoder"
1317 mpeg2_vaapi_hwaccel_select="vaapi mpeg2video_decoder"
1318 mpeg4_crystalhd_decoder_select="crystalhd"
1319 mpeg4_vaapi_hwaccel_select="vaapi mpeg4_decoder"
1320 mpeg4_vdpau_decoder_select="vdpau mpeg4_decoder"
1321 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1322 mpeg_xvmc_decoder_select="mpegvideo_decoder"
1323 msmpeg4_crystalhd_decoder_select="crystalhd"
1324 msmpeg4v1_decoder_select="h263_decoder"
1325 msmpeg4v1_encoder_select="h263_encoder"
1326 msmpeg4v2_decoder_select="h263_decoder"
1327 msmpeg4v2_encoder_select="h263_encoder"
1328 msmpeg4v3_decoder_select="h263_decoder"
1329 msmpeg4v3_encoder_select="h263_encoder"
1330 nellymoser_decoder_select="mdct sinewin"
1331 nellymoser_encoder_select="mdct sinewin"
1332 png_decoder_select="zlib"
1333 png_encoder_select="zlib"
1334 qcelp_decoder_select="lsp"
1335 qdm2_decoder_select="mdct rdft"
1336 ra_144_encoder_select="lpc"
1337 rv10_decoder_select="h263_decoder"
1338 rv10_encoder_select="h263_encoder"
1339 rv20_decoder_select="h263_decoder"
1340 rv20_encoder_select="h263_encoder"
1341 rv30_decoder_select="golomb h264pred"
1342 rv40_decoder_select="golomb h264pred"
1343 shorten_decoder_select="golomb"
1344 sipr_decoder_select="lsp"
1345 snow_decoder_select="dwt"
1346 snow_encoder_select="aandct dwt"
1347 sonic_decoder_select="golomb"
1348 sonic_encoder_select="golomb"
1349 sonic_ls_encoder_select="golomb"
1350 svq1_encoder_select="aandct"
1351 svq3_decoder_select="golomb h264dsp h264pred"
1352 svq3_decoder_suggest="zlib"
1353 theora_decoder_select="vp3_decoder"
1354 tiff_decoder_suggest="zlib"
1355 tiff_encoder_suggest="zlib"
1356 truehd_decoder_select="mlp_decoder"
1357 tscc_decoder_select="zlib"
1358 twinvq_decoder_select="mdct lsp sinewin"
1359 vc1_decoder_select="h263_decoder"
1360 vc1_crystalhd_decoder_select="crystalhd"
1361 vc1_dxva2_hwaccel_deps="dxva2api_h DXVA_PictureParameters_wDecodedPictureIndex"
1362 vc1_dxva2_hwaccel_select="dxva2 vc1_decoder"
1363 vc1_vaapi_hwaccel_select="vaapi vc1_decoder"
1364 vc1_vdpau_decoder_select="vdpau vc1_decoder"
1365 vorbis_decoder_select="mdct"
1366 vorbis_encoder_select="mdct"
1367 vp6_decoder_select="huffman"
1368 vp6a_decoder_select="vp6_decoder"
1369 vp6f_decoder_select="vp6_decoder"
1370 vp8_decoder_select="h264pred"
1371 wmapro_decoder_select="mdct sinewin"
1372 wmav1_decoder_select="mdct sinewin"
1373 wmav1_encoder_select="mdct sinewin"
1374 wmav2_decoder_select="mdct sinewin"
1375 wmav2_encoder_select="mdct sinewin"
1376 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1377 wmv1_decoder_select="h263_decoder"
1378 wmv1_encoder_select="h263_encoder"
1379 wmv2_decoder_select="h263_decoder"
1380 wmv2_encoder_select="h263_encoder"
1381 wmv3_decoder_select="vc1_decoder"
1382 wmv3_crystalhd_decoder_select="crystalhd"
1383 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1384 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1385 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
1386 zlib_decoder_select="zlib"
1387 zlib_encoder_select="zlib"
1388 zmbv_decoder_select="zlib"
1389 zmbv_encoder_select="zlib"
1390
1391 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
1392 vaapi_deps="va_va_h"
1393 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1394
1395 # parsers
1396 h264_parser_select="golomb h264dsp h264pred"
1397
1398 # external libraries
1399 libcelt_decoder_deps="libcelt"
1400 libdirac_decoder_deps="libdirac !libschroedinger"
1401 libdirac_encoder_deps="libdirac"
1402 libfaac_encoder_deps="libfaac"
1403 libgsm_decoder_deps="libgsm"
1404 libgsm_encoder_deps="libgsm"
1405 libgsm_ms_decoder_deps="libgsm"
1406 libgsm_ms_encoder_deps="libgsm"
1407 libmp3lame_encoder_deps="libmp3lame"
1408 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1409 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1410 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1411 libopenjpeg_decoder_deps="libopenjpeg"
1412 libschroedinger_decoder_deps="libschroedinger"
1413 libschroedinger_encoder_deps="libschroedinger"
1414 libspeex_decoder_deps="libspeex"
1415 libtheora_encoder_deps="libtheora"
1416 libvo_aacenc_encoder_deps="libvo_aacenc"
1417 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1418 libvorbis_encoder_deps="libvorbis"
1419 libvpx_decoder_deps="libvpx"
1420 libvpx_encoder_deps="libvpx"
1421 libx264_encoder_deps="libx264"
1422 libxavs_encoder_deps="libxavs"
1423 libxvid_encoder_deps="libxvid"
1424
1425 # demuxers / muxers
1426 ac3_demuxer_select="ac3_parser"
1427 asf_stream_muxer_select="asf_muxer"
1428 avisynth_demuxer_deps="avisynth"
1429 dirac_demuxer_select="dirac_parser"
1430 eac3_demuxer_select="ac3_parser"
1431 flac_demuxer_select="flac_parser"
1432 ipod_muxer_select="mov_muxer"
1433 libnut_demuxer_deps="libnut"
1434 libnut_muxer_deps="libnut"
1435 matroska_audio_muxer_select="matroska_muxer"
1436 matroska_demuxer_suggest="zlib bzlib"
1437 mov_demuxer_suggest="zlib"
1438 mp3_demuxer_select="mpegaudio_parser"
1439 mp4_muxer_select="mov_muxer"
1440 mpegtsraw_demuxer_select="mpegts_demuxer"
1441 mxf_d10_muxer_select="mxf_muxer"
1442 ogg_demuxer_select="golomb"
1443 psp_muxer_select="mov_muxer"
1444 rtp_demuxer_select="sdp_demuxer"
1445 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
1446 rtsp_demuxer_select="http_protocol rtpdec"
1447 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol"
1448 sap_demuxer_select="sdp_demuxer"
1449 sap_muxer_select="rtp_muxer rtp_protocol"
1450 sdp_demuxer_select="rtpdec"
1451 spdif_muxer_select="aac_parser"
1452 tg2_muxer_select="mov_muxer"
1453 tgp_muxer_select="mov_muxer"
1454 w64_demuxer_deps="wav_demuxer"
1455
1456 # indevs / outdevs
1457 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
1458 alsa_outdev_deps="alsa_asoundlib_h"
1459 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
1460 dv1394_indev_deps="dv1394 dv_demuxer"
1461 fbdev_indev_deps="linux_fb_h"
1462 jack_indev_deps="jack_jack_h sem_timedwait"
1463 libdc1394_indev_deps="libdc1394"
1464 oss_indev_deps_any="soundcard_h sys_soundcard_h"
1465 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
1466 sndio_indev_deps="sndio_h"
1467 sndio_outdev_deps="sndio_h"
1468 v4l_indev_deps="linux_videodev_h"
1469 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
1470 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
1471 vfwcap_indev_extralibs="-lavicap32"
1472 x11_grab_device_indev_deps="x11grab XShmCreateImage"
1473 x11_grab_device_indev_extralibs="-lX11 -lXext -lXfixes"
1474
1475 # protocols
1476 gopher_protocol_deps="network"
1477 http_protocol_deps="network"
1478 http_protocol_select="tcp_protocol"
1479 mmsh_protocol_select="http_protocol"
1480 mmst_protocol_deps="network"
1481 rtmp_protocol_select="tcp_protocol"
1482 rtp_protocol_select="udp_protocol"
1483 tcp_protocol_deps="network"
1484 udp_protocol_deps="network"
1485
1486 # filters
1487 blackframe_filter_deps="gpl"
1488 cropdetect_filter_deps="gpl"
1489 drawtext_filter_deps="libfreetype"
1490 frei0r_filter_deps="frei0r dlopen strtok_r"
1491 frei0r_src_filter_deps="frei0r dlopen strtok_r"
1492 hqdn3d_filter_deps="gpl"
1493 movie_filter_deps="avcodec avformat"
1494 mp_filter_deps="gpl avcodec"
1495 ocv_filter_deps="libopencv"
1496 scale_filter_deps="swscale"
1497 yadif_filter_deps="gpl"
1498
1499 # libraries
1500 avdevice_deps="avcodec avformat"
1501 avformat_deps="avcodec"
1502
1503 # programs
1504 ffmpeg_deps="avcodec avformat swscale"
1505 ffmpeg_select="buffer_filter"
1506 ffplay_deps="avcodec avformat swscale sdl"
1507 ffplay_select="rdft"
1508 ffprobe_deps="avcodec avformat"
1509 ffserver_deps="avformat ffm_muxer fork rtp_protocol rtsp_demuxer"
1510 ffserver_extralibs='$ldl'
1511
1512 doc_deps="texi2html"
1513
1514 # tests
1515
1516 test_deps(){
1517     suf1=$1
1518     suf2=$2
1519     shift 2
1520     for v; do
1521         dep=${v%=*}
1522         tests=${v#*=}
1523         for name in ${tests}; do
1524             eval ${name}_test_deps="'${dep}$suf1 ${dep}$suf2'"
1525         done
1526     done
1527 }
1528
1529 set_ne_test_deps(){
1530     eval ${1}_be_test_deps="bigendian"
1531     eval ${1}_le_test_deps="!bigendian"
1532 }
1533
1534 test_deps _encoder _decoder                                             \
1535     adpcm_g726=g726                                                     \
1536     adpcm_ima_qt                                                        \
1537     adpcm_ima_wav                                                       \
1538     adpcm_ms                                                            \
1539     adpcm_swf                                                           \
1540     adpcm_yamaha=adpcm_yam                                              \
1541     alac                                                                \
1542     asv1                                                                \
1543     asv2                                                                \
1544     bmp                                                                 \
1545     dnxhd="dnxhd_1080i dnxhd_720p dnxhd_720p_rd"                        \
1546     dvvideo="dv dv50"                                                   \
1547     ffv1                                                                \
1548     flac                                                                \
1549     flashsv                                                             \
1550     flv                                                                 \
1551     gif                                                                 \
1552     h261                                                                \
1553     h263="h263 h263p"                                                   \
1554     huffyuv                                                             \
1555     jpegls                                                              \
1556     mjpeg="jpg mjpeg ljpeg"                                             \
1557     mp2                                                                 \
1558     mpeg1video="mpeg mpeg1b"                                            \
1559     mpeg2video="mpeg2 mpeg2thread"                                      \
1560     mpeg4="mpeg4 mpeg4adv mpeg4nr mpeg4thread error rc"                 \
1561     msmpeg4v3=msmpeg4                                                   \
1562     msmpeg4v2                                                           \
1563     pbm=pbmpipe                                                         \
1564     pcx                                                                 \
1565     pgm="pgm pgmpipe"                                                   \
1566     png                                                                 \
1567     ppm="ppm ppmpipe"                                                   \
1568     rawvideo="rgb yuv"                                                  \
1569     roq                                                                 \
1570     rv10                                                                \
1571     rv20                                                                \
1572     sgi                                                                 \
1573     snow="snow snowll"                                                  \
1574     svq1                                                                \
1575     targa=tga                                                           \
1576     tiff                                                                \
1577     wmav1                                                               \
1578     wmav2                                                               \
1579     wmv1                                                                \
1580     wmv2                                                                \
1581
1582 test_deps _muxer _demuxer                                               \
1583     aiff                                                                \
1584     pcm_alaw=alaw                                                       \
1585     asf                                                                 \
1586     au                                                                  \
1587     avi                                                                 \
1588     dv=dv_fmt                                                           \
1589     ffm                                                                 \
1590     flv=flv_fmt                                                         \
1591     gxf                                                                 \
1592     matroska=mkv                                                        \
1593     mmf                                                                 \
1594     mov                                                                 \
1595     pcm_mulaw=mulaw                                                     \
1596     mxf                                                                 \
1597     nut                                                                 \
1598     ogg                                                                 \
1599     rawvideo=pixfmt                                                     \
1600     rm                                                                  \
1601     swf                                                                 \
1602     mpegts=ts                                                           \
1603     voc                                                                 \
1604     wav                                                                 \
1605     yuv4mpegpipe=yuv4mpeg                                               \
1606
1607 ac3_fixed_test_deps="ac3_fixed_encoder ac3_decoder rm_muxer rm_demuxer"
1608 mpg_test_deps="mpeg1system_muxer mpegps_demuxer"
1609
1610 set_ne_test_deps pixdesc
1611 set_ne_test_deps pixfmts_copy
1612 set_ne_test_deps pixfmts_crop
1613 set_ne_test_deps pixfmts_hflip
1614 set_ne_test_deps pixfmts_null
1615 set_ne_test_deps pixfmts_pad
1616 set_ne_test_deps pixfmts_scale
1617 set_ne_test_deps pixfmts_vflip
1618
1619 # default parameters
1620
1621 logfile="config.log"
1622
1623 # installation paths
1624 prefix_default="/usr/local"
1625 bindir_default='${prefix}/bin'
1626 datadir_default='${prefix}/share/ffmpeg'
1627 incdir_default='${prefix}/include'
1628 libdir_default='${prefix}/lib'
1629 mandir_default='${prefix}/share/man'
1630 shlibdir_default="$libdir_default"
1631
1632 # toolchain
1633 ar_default="ar"
1634 cc_default="gcc"
1635 cc_version=\"unknown\"
1636 host_cc_default="gcc"
1637 ln_s="ln -sf"
1638 nm_default="nm"
1639 objformat="elf"
1640 pkg_config_default=pkg-config
1641 ranlib="ranlib"
1642 strip_default="strip"
1643 yasmexe="yasm"
1644 nogas=":"
1645
1646 nm_opts='-g'
1647
1648 # machine
1649 arch_default=$(uname -m)
1650 cpu="generic"
1651
1652 # OS
1653 target_os_default=$(tolower $(uname -s))
1654 host_os=$target_os_default
1655
1656 # configurable options
1657 enable avcodec
1658 enable avdevice
1659 enable avfilter
1660 enable avformat
1661 enable avutil
1662 enable asm
1663 enable debug
1664 enable doc
1665 enable fastdiv
1666 enable ffmpeg
1667 enable ffplay
1668 enable ffprobe
1669 enable ffserver
1670 enable mpegaudio_hp
1671 enable network
1672 enable optimizations
1673 enable protocols
1674 enable static
1675 enable stripping
1676 enable swscale
1677 enable swscale_alpha
1678
1679 # build settings
1680 SHFLAGS='-shared -Wl,-soname,$$(@F)'
1681 FFSERVERLDFLAGS=-Wl,-E
1682 LIBPREF="lib"
1683 LIBSUF=".a"
1684 FULLNAME='$(NAME)$(BUILDSUF)'
1685 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
1686 SLIBPREF="lib"
1687 SLIBSUF=".so"
1688 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
1689 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
1690 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
1691 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
1692
1693 CC_O='-o $@'
1694
1695 host_cflags='-D_ISOC99_SOURCE -D_POSIX_C_SOURCE=200112 -O3 -g -Wall'
1696 host_libs='-lm'
1697
1698 target_path='$(CURDIR)'
1699
1700 # since the object filename is not given with the -MM flag, the compiler
1701 # is only able to print the basename, and we must add the path ourselves
1702 DEPEND_CMD='$(DEPCC) $(DEPFLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
1703 DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -MM'
1704
1705 # find source path
1706 source_path="$(dirname "$0")"
1707 enable source_path_used
1708 if test -f configure; then
1709     source_path="$(pwd)"
1710     disable source_path_used
1711 else
1712     source_path="$(cd "$source_path"; pwd)"
1713     echo "$source_path" | grep -q '[[:blank:]]' &&
1714         die "Out of tree builds are impossible with whitespace in source path."
1715     test -e "$source_path/config.h" &&
1716         die "Out of tree builds are impossible with config.h in source dir."
1717 fi
1718
1719 for v in "$@"; do
1720     r=${v#*=}
1721     l=${v%"$r"}
1722     r=$(sh_quote "$r")
1723     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
1724 done
1725
1726 find_things(){
1727     thing=$1
1728     pattern=$2
1729     file=$source_path/$3
1730     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
1731 }
1732
1733 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
1734 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
1735 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
1736 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
1737 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
1738 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
1739 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
1740 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
1741 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
1742 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
1743 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
1744
1745 find_tests(){
1746     map "echo ${2}\${v}_test" $(ls "$source_path"/tests/ref/$1 | grep -v '[^-a-z0-9_]')
1747 }
1748
1749 ACODEC_TESTS=$(find_tests acodec)
1750 VCODEC_TESTS=$(find_tests vsynth1)
1751 LAVF_TESTS=$(find_tests lavf)
1752 LAVFI_TESTS=$(find_tests lavfi)
1753 SEEK_TESTS=$(find_tests seek seek_)
1754
1755 pcm_test_deps=$(map 'echo ${v%_*}_decoder $v' $(filter pcm_* $ENCODER_LIST))
1756
1757 for n in $COMPONENT_LIST; do
1758     v=$(toupper ${n%s})_LIST
1759     eval enable \$$v
1760     eval ${n}_if_any="\$$v"
1761 done
1762
1763 enable $ARCH_EXT_LIST $ACODEC_TESTS $VCODEC_TESTS $LAVF_TESTS $LAVFI_TESTS $SEEK_TESTS
1764
1765 die_unknown(){
1766     echo "Unknown option \"$1\"."
1767     echo "See $0 --help for available options."
1768     exit 1
1769 }
1770
1771 show_list() {
1772     suffix=_$1
1773     shift
1774     echo $* | sed s/$suffix//g | tr ' ' '\n' | sort | pr -3 -t
1775     exit 0
1776 }
1777
1778 for opt do
1779     optval="${opt#*=}"
1780     case "$opt" in
1781     --extra-ldflags=*) add_ldflags $optval
1782     ;;
1783     --extra-libs=*) add_extralibs $optval
1784     ;;
1785     --disable-devices) disable $INDEV_LIST $OUTDEV_LIST
1786     ;;
1787     --enable-debug=*) debuglevel="$optval"
1788     ;;
1789     --disable-everything)
1790     map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
1791     ;;
1792     --enable-*=*|--disable-*=*)
1793     eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
1794     is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
1795     eval list=\$$(toupper $thing)_LIST
1796     name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
1797     $action $(filter "$name" $list)
1798     ;;
1799     --enable-?*|--disable-?*)
1800     eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
1801     if is_in $option $COMPONENT_LIST; then
1802         test $action = disable && action=unset
1803         eval $action \$$(toupper ${option%s})_LIST
1804     elif is_in $option $CMDLINE_SELECT; then
1805         $action $option
1806     else
1807         die_unknown $opt
1808     fi
1809     ;;
1810     --list-*)
1811         NAME="${opt#--list-}"
1812         is_in $NAME $COMPONENT_LIST || die_unknown $opt
1813         NAME=${NAME%s}
1814         eval show_list $NAME \$$(toupper $NAME)_LIST
1815     ;;
1816     --help|-h) show_help
1817     ;;
1818     *)
1819     optname="${opt%%=*}"
1820     optname="${optname#--}"
1821     optname=$(echo "$optname" | sed 's/-/_/g')
1822     if is_in $optname $CMDLINE_SET; then
1823         eval $optname='$optval'
1824     elif is_in $optname $CMDLINE_APPEND; then
1825         append $optname "$optval"
1826     else
1827          die_unknown $opt
1828     fi
1829     ;;
1830     esac
1831 done
1832
1833 disabled logging && logfile=/dev/null
1834
1835 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
1836 set >> $logfile
1837
1838 test -n "$cross_prefix" && enable cross_compile
1839
1840 if enabled cross_compile; then
1841     test -n "$arch" && test -n "$target_os" ||
1842         die "Must specify target arch and OS when cross-compiling"
1843 fi
1844
1845 set_default arch target_os
1846
1847 ar_default="${cross_prefix}${ar_default}"
1848 cc_default="${cross_prefix}${cc_default}"
1849 nm_default="${cross_prefix}${nm_default}"
1850 pkg_config_default="${cross_prefix}${pkg_config_default}"
1851 ranlib="${cross_prefix}${ranlib}"
1852 strip_default="${cross_prefix}${strip_default}"
1853
1854 sysinclude_default="${sysroot}/usr/include"
1855
1856 set_default cc nm pkg_config strip sysinclude
1857 enabled cross_compile || host_cc_default=$cc
1858 set_default host_cc
1859
1860 exesuf() {
1861     case $1 in
1862         mingw32*|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
1863     esac
1864 }
1865
1866 EXESUF=$(exesuf $target_os)
1867 HOSTEXESUF=$(exesuf $host_os)
1868
1869 # set temporary file name
1870 : ${TMPDIR:=$TEMPDIR}
1871 : ${TMPDIR:=$TMP}
1872 : ${TMPDIR:=/tmp}
1873
1874 if ! check_cmd mktemp -u XXXXXX; then
1875     # simple replacement for missing mktemp
1876     # NOT SAFE FOR GENERAL USE
1877     mktemp(){
1878         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
1879     }
1880 fi
1881
1882 tmpfile(){
1883     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
1884         (set -C; exec > $tmp) 2>/dev/null ||
1885         die "Unable to create temporary file in $TMPDIR."
1886     append TMPFILES $tmp
1887     eval $1=$tmp
1888 }
1889
1890 trap 'rm -f -- $TMPFILES' EXIT
1891
1892 tmpfile TMPC  .c
1893 tmpfile TMPE  $EXESUF
1894 tmpfile TMPH  .h
1895 tmpfile TMPO  .o
1896 tmpfile TMPS  .S
1897 tmpfile TMPV  .ver
1898 tmpfile TMPSH .sh
1899 tmpfile TMPASM .asm
1900
1901 unset -f mktemp
1902
1903 chmod +x $TMPE
1904
1905 # make sure we can execute files in $TMPDIR
1906 cat > $TMPSH 2>> $logfile <<EOF
1907 #! /bin/sh
1908 EOF
1909 chmod +x $TMPSH >> $logfile 2>&1
1910 if ! $TMPSH >> $logfile 2>&1; then
1911     cat <<EOF
1912 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
1913 variable to another directory and make sure that it is not mounted noexec.
1914 EOF
1915     die "Sanity test failed."
1916 fi
1917
1918 filter_cflags=echo
1919 filter_cppflags=echo
1920 filter_asflags=echo
1921
1922 if   $cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
1923     cc_type=llvm_gcc
1924     cc_version=__VERSION__
1925     gcc_extra_ver=$(expr "$($cc --version | head -n1)" : '.*\((.*)\)')
1926     cc_ident="llvm-gcc $($cc -dumpversion) $gcc_extra_ver"
1927     CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1928     AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1929     speed_cflags='-O3'
1930     size_cflags='-Os'
1931 elif $cc -v 2>&1 | grep -qi ^gcc; then
1932     cc_type=gcc
1933     cc_version=__VERSION__
1934     gcc_version=$($cc --version | head -n1)
1935     gcc_basever=$($cc -dumpversion)
1936     gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
1937     gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
1938     cc_ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
1939     if ! $cc -dumpversion | grep -q '^2\.'; then
1940         CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1941         AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
1942     fi
1943     speed_cflags='-O3'
1944     size_cflags='-Os'
1945 elif $cc --version 2>/dev/null | grep -q Intel; then
1946     cc_type=icc
1947     cc_version="AV_STRINGIFY(__INTEL_COMPILER)"
1948     cc_ident=$($cc --version | head -n1)
1949     icc_version=$($cc -dumpversion)
1950     CC_DEPFLAGS='-MMD'
1951     AS_DEPFLAGS='-MMD'
1952     speed_cflags='-O3'
1953     size_cflags='-Os'
1954     noopt_cflags='-O1'
1955 elif $cc -v 2>&1 | grep -q xlc; then
1956     cc_type=xlc
1957     cc_version="AV_STRINGIFY(__IBMC__)"
1958     cc_ident=$($cc -qversion 2>/dev/null | head -n1)
1959     speed_cflags='-O5'
1960     size_cflags='-O5 -qcompact'
1961 elif $cc -V 2>/dev/null | grep -q Compaq; then
1962     cc_type=ccc
1963     cc_version="AV_STRINGIFY(__DECC_VER)"
1964     cc_ident=$($cc -V | head -n1 | cut -d' ' -f1-3)
1965     DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -M'
1966     debuglevel=3
1967     add_ldflags -Wl,-z,now # calls to libots crash without this
1968     speed_cflags='-fast'
1969     size_cflags='-O1'
1970 elif $cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
1971     test -d "$sysroot" || die "No valid sysroot specified."
1972     cc_type=armcc
1973     cc_version="AV_STRINGIFY(__ARMCC_VERSION)"
1974     cc_ident=$($cc --vsn | head -n1)
1975     armcc_conf="$PWD/armcc.conf"
1976     $cc --arm_linux_configure                 \
1977         --arm_linux_config_file="$armcc_conf" \
1978         --configure_sysroot="$sysroot"        \
1979         --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
1980         die "Error creating armcc configuration file."
1981     $cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
1982     cc="$cc --arm_linux_config_file=$armcc_conf --translate_gcc"
1983     as_default="${cross_prefix}gcc"
1984     CC_DEPFLAGS='-MMD'
1985     AS_DEPFLAGS='-MMD'
1986     speed_cflags='-O3'
1987     size_cflags='-Os'
1988     filter_asflags="filter_out -W${armcc_opt}*"
1989 elif $cc -version 2>/dev/null | grep -q TMS470; then
1990     cc_type=tms470
1991     cc_version="AV_STRINGIFY(__TI_COMPILER_VERSION__)"
1992     cc_ident=$($cc -version | head -n1 | tr -s ' ')
1993     cc="$cc --gcc --abi=eabi -eo=.o -mc -me"
1994     CC_O='-fr=$(@D)'
1995     as_default="${cross_prefix}gcc"
1996     ld_default="${cross_prefix}gcc"
1997     TMPO=$(basename $TMPC .c).o
1998     append TMPFILES $TMPO
1999     add_cflags -D__gnuc_va_list=va_list -D__USER_LABEL_PREFIX__=
2000     CC_DEPFLAGS='-ppa -ppd=$(@:.o=.d)'
2001     AS_DEPFLAGS='-MMD'
2002     speed_cflags='-O3 -mf=5'
2003     size_cflags='-O3 -mf=2'
2004     filter_cflags=tms470_flags
2005     tms470_flags(){
2006         for flag; do
2007             case $flag in
2008                 -march=*|-mcpu=*)
2009                     case "${flag#*=}" in
2010                         armv7-a|cortex-a*)      echo -mv=7a8 ;;
2011                         armv7-r|cortex-r*)      echo -mv=7r4 ;;
2012                         armv7-m|cortex-m*)      echo -mv=7m3 ;;
2013                         armv6*|arm11*)          echo -mv=6   ;;
2014                         armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2015                                                 echo -mv=5e  ;;
2016                         armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2017                     esac
2018                     ;;
2019                 -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2020                 -mfpu=vfp)      echo --float_support=vfpv2        ;;
2021                 -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2022                 -msoft-float)   echo --float_support=vfplib       ;;
2023                 -O[0-3]|-mf=*)  echo $flag                        ;;
2024                 -g)             echo -g -mn                       ;;
2025                 -pds=*)         echo $flag                        ;;
2026             esac
2027         done
2028     }
2029 elif $cc -v 2>&1 | grep -q clang; then
2030     cc_type=clang
2031     $cc -dM -E $TMPC | grep -q __clang_version__ &&
2032         cc_version=__clang_version__ || cc_version=__VERSION__
2033     cc_ident=$($cc --version | head -n1)
2034     CC_DEPFLAGS='-MMD'
2035     AS_DEPFLAGS='-MMD'
2036     speed_cflags='-O3'
2037     size_cflags='-Os'
2038 elif $cc -V 2>&1 | grep -q Sun; then
2039     cc_type=suncc
2040     cc_version="AV_STRINGIFY(__SUNPRO_C)"
2041     cc_ident=$($cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2042     DEPEND_CMD='$(DEPCC) $(DEPFLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2043     DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -xM1'
2044     speed_cflags='-O5'
2045     size_cflags='-O5 -xspace'
2046     filter_cflags=suncc_flags
2047     suncc_flags(){
2048         for flag; do
2049             case $flag in
2050                 -march=*|-mcpu=*)
2051                     case "${flag#*=}" in
2052                         native)                   echo -xtarget=native       ;;
2053                         v9|niagara)               echo -xarch=sparc          ;;
2054                         ultrasparc)               echo -xarch=sparcvis       ;;
2055                         ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2056                         i586|pentium)             echo -xchip=pentium        ;;
2057                         i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2058                         pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2059                         pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2060                         pentium4*)          echo -xtarget=pentium4           ;;
2061                         prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2062                         *-sse3)             echo -xarch=sse3                 ;;
2063                         core2)              echo -xarch=ssse3 -xchip=core2   ;;
2064                         amdfam10|barcelona)       echo -xarch=sse4_1         ;;
2065                         athlon-4|athlon-[mx]p)    echo -xarch=ssea           ;;
2066                         k8|opteron|athlon64|athlon-fx)
2067                                                   echo -xarch=sse2a          ;;
2068                         athlon*)                  echo -xarch=pentium_proa   ;;
2069                     esac
2070                     ;;
2071                 -std=c99)             echo -xc99              ;;
2072                 -fomit-frame-pointer) echo -xregs=frameptr    ;;
2073                 -fPIC)                echo -KPIC -xcode=pic32 ;;
2074                 -W*,*)                echo $flag              ;;
2075                 -f*-*|-W*)                                    ;;
2076                 *)                    echo $flag              ;;
2077             esac
2078         done
2079     }
2080 elif $cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2081     cc_type=pathscale
2082     cc_version=__PATHSCALE__
2083     cc_ident=$($cc -v 2>&1 | head -n1 | tr -d :)
2084     CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2085     AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2086     speed_cflags='-O2'
2087     size_cflags='-Os'
2088 elif $cc -v 2>&1 | grep -q Open64; then
2089     cc_type=open64
2090     cc_version=__OPEN64__
2091     cc_ident=$($cc -v 2>&1 | head -n1 | tr -d :)
2092     CC_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2093     AS_DEPFLAGS='-MMD -MF $(@:.o=.d) -MT $@'
2094     speed_cflags='-O2'
2095     size_cflags='-Os'
2096 fi
2097
2098 test -n "$cc_type" && enable $cc_type ||
2099     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2100
2101 : ${as_default:=$cc}
2102 : ${dep_cc_default:=$cc}
2103 : ${ld_default:=$cc}
2104 set_default ar as dep_cc ld
2105
2106 test -n "$CC_DEPFLAGS" || CCDEP=$DEPEND_CMD
2107 test -n "$AS_DEPFLAGS" || ASDEP=$DEPEND_CMD
2108
2109 add_cflags $extra_cflags
2110 add_asflags $extra_cflags
2111
2112 if test -n "$sysroot"; then
2113     case "$cc_type" in
2114         gcc|llvm_gcc|clang)
2115             add_cppflags --sysroot="$sysroot"
2116             add_ldflags --sysroot="$sysroot"
2117         ;;
2118         tms470)
2119             add_cppflags -I"$sysinclude"
2120             add_ldflags  --sysroot="$sysroot"
2121         ;;
2122     esac
2123 fi
2124
2125 if test "$cpu" = host; then
2126     enabled cross_compile && die "--cpu=host makes no sense when cross-compiling."
2127
2128     case "$cc_type" in
2129         gcc|llvm_gcc)
2130             check_native(){
2131                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2132                 sed -n "/$1=/{
2133                             s/.*$1=\\([^ ]*\\).*/\\1/
2134                             p
2135                             q
2136                         }" $TMPE
2137             }
2138             cpu=$(check_native -march || check_native -mcpu)
2139         ;;
2140     esac
2141
2142     test "${cpu:-host}" = host && die "--cpu=host not supported with compiler $cc"
2143 fi
2144
2145 # Deal with common $arch aliases
2146 case "$arch" in
2147     arm*)
2148         arch="arm"
2149     ;;
2150     mips|mipsel|IP*)
2151         arch="mips"
2152     ;;
2153     mips64*)
2154         arch="mips"
2155         subarch="mips64"
2156     ;;
2157     parisc|hppa)
2158         arch="parisc"
2159     ;;
2160     parisc64|hppa64)
2161         arch="parisc"
2162         subarch="parisc64"
2163     ;;
2164     "Power Macintosh"|ppc|powerpc)
2165         arch="ppc"
2166     ;;
2167     ppc64|powerpc64)
2168         arch="ppc"
2169         subarch="ppc64"
2170     ;;
2171     s390|s390x)
2172         arch="s390"
2173     ;;
2174     sh4|sh)
2175         arch="sh4"
2176     ;;
2177     sun4u|sparc64)
2178         arch="sparc"
2179         subarch="sparc64"
2180     ;;
2181     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
2182         arch="x86"
2183     ;;
2184 esac
2185
2186 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2187 enable $arch
2188
2189 # Add processor-specific flags
2190 if test "$cpu" = generic; then
2191     : do nothing
2192 elif enabled ppc; then
2193
2194     case $(tolower $cpu) in
2195         601|ppc601|powerpc601)
2196             cpuflags="-mcpu=601"
2197             disable altivec
2198         ;;
2199         603*|ppc603*|powerpc603*)
2200             cpuflags="-mcpu=603"
2201             disable altivec
2202         ;;
2203         604*|ppc604*|powerpc604*)
2204             cpuflags="-mcpu=604"
2205             disable altivec
2206         ;;
2207         g3|75*|ppc75*|powerpc75*)
2208             cpuflags="-mcpu=750 -mpowerpc-gfxopt"
2209             disable altivec
2210         ;;
2211         g4|745*|ppc745*|powerpc745*)
2212             cpuflags="-mcpu=7450 -mpowerpc-gfxopt"
2213         ;;
2214         74*|ppc74*|powerpc74*)
2215             cpuflags="-mcpu=7400 -mpowerpc-gfxopt"
2216         ;;
2217         g5|970|ppc970|powerpc970|power4*)
2218             cpuflags="-mcpu=970 -mpowerpc-gfxopt -mpowerpc64"
2219         ;;
2220         cell)
2221             cpuflags="-mcpu=cell"
2222             enable ldbrx
2223         ;;
2224         e500v2)
2225             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
2226             disable altivec
2227         ;;
2228         e500)
2229             cpuflags="-mcpu=8540 -mhard-float"
2230             disable altivec
2231         ;;
2232     esac
2233
2234 elif enabled x86; then
2235
2236     case $cpu in
2237         i[345]86|pentium)
2238             cpuflags="-march=$cpu"
2239             disable mmx
2240         ;;
2241         # targets that do NOT support conditional mov (cmov)
2242         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
2243             cpuflags="-march=$cpu"
2244             disable cmov
2245         ;;
2246         # targets that do support conditional mov (cmov)
2247         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64|k8|opteron|athlon-fx|core2|amdfam10|barcelona|atom)
2248             cpuflags="-march=$cpu"
2249             enable cmov
2250             enable fast_cmov
2251         ;;
2252         # targets that do support conditional mov but on which it's slow
2253         pentium4|pentium4m|prescott|nocona)
2254             cpuflags="-march=$cpu"
2255             enable cmov
2256             disable fast_cmov
2257         ;;
2258     esac
2259
2260 elif enabled sparc; then
2261
2262     case $cpu in
2263         niagara)
2264             cpuflags="-mcpu=$cpu"
2265             disable vis
2266         ;;
2267         sparc64)
2268             cpuflags="-mcpu=v9"
2269         ;;
2270     esac
2271
2272 elif enabled arm; then
2273
2274     case $cpu in
2275         armv*)
2276             cpuflags="-march=$cpu"
2277             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
2278         ;;
2279         *)
2280             cpuflags="-mcpu=$cpu"
2281             case $cpu in
2282                 cortex-a*)                               subarch=armv7a  ;;
2283                 cortex-r*)                               subarch=armv7r  ;;
2284                 cortex-m*)                               subarch=armv7m  ;;
2285                 arm11*)                                  subarch=armv6   ;;
2286                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
2287                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
2288             esac
2289         ;;
2290     esac
2291
2292 elif enabled alpha; then
2293
2294     enabled ccc && cpuflags="-arch $cpu" || cpuflags="-mcpu=$cpu"
2295
2296 elif enabled bfin; then
2297
2298     cpuflags="-mcpu=$cpu"
2299
2300 elif enabled mips; then
2301
2302     cpuflags="-march=$cpu"
2303
2304 elif enabled avr32; then
2305
2306     case $cpu in
2307         ap7[02]0[0-2])
2308             subarch="avr32_ap"
2309             cpuflags="-mpart=$cpu"
2310         ;;
2311         ap)
2312             subarch="avr32_ap"
2313             cpuflags="-march=$cpu"
2314         ;;
2315         uc3[ab]*)
2316             subarch="avr32_uc"
2317             cpuflags="-mcpu=$cpu"
2318         ;;
2319         uc)
2320             subarch="avr32_uc"
2321             cpuflags="-march=$cpu"
2322         ;;
2323     esac
2324
2325 fi
2326
2327 add_cflags $cpuflags
2328 add_asflags $cpuflags
2329
2330 # compiler sanity check
2331 check_exec <<EOF
2332 int main(void){ return 0; }
2333 EOF
2334 if test "$?" != 0; then
2335     echo "$cc is unable to create an executable file."
2336     if test -z "$cross_prefix" && ! enabled cross_compile ; then
2337         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
2338         echo "Only do this if you know what cross compiling means."
2339     fi
2340     die "C compiler test failed."
2341 fi
2342
2343 add_cppflags -D_ISOC99_SOURCE -D_POSIX_C_SOURCE=200112
2344 check_cflags -std=c99
2345 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
2346 #include <stdlib.h>
2347 EOF
2348 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
2349 #include <stdlib.h>
2350 EOF
2351
2352 check_host_cflags -std=c99
2353
2354 case "$arch" in
2355     alpha|ia64|mips|parisc|sparc)
2356         spic=$shared
2357     ;;
2358     x86)
2359         subarch="x86_32"
2360         check_cc <<EOF && subarch="x86_64"
2361         int test[(int)sizeof(char*) - 7];
2362 EOF
2363         if test "$subarch" = "x86_64"; then
2364             spic=$shared
2365         fi
2366     ;;
2367 esac
2368
2369 enable $subarch
2370 enabled spic && enable pic
2371
2372 # OS specific
2373 case $target_os in
2374     haiku)
2375         prefix_default="/boot/common"
2376         network_extralibs="-lnetwork"
2377         host_libs=
2378         ;;
2379     sunos)
2380         FFSERVERLDFLAGS=""
2381         SHFLAGS='-shared -Wl,-h,$$(@F)'
2382         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
2383         network_extralibs="-lsocket -lnsl"
2384         add_cppflags -D__EXTENSIONS__
2385         nm_opts='-P -g'
2386         ;;
2387     netbsd)
2388         disable symver
2389         oss_indev_extralibs="-lossaudio"
2390         oss_outdev_extralibs="-lossaudio"
2391         add_cppflags -D_XOPEN_SOURCE=600
2392         ;;
2393     openbsd)
2394         enable malloc_aligned
2395         # On OpenBSD 4.5. the compiler does not use PIC unless
2396         # explicitly using -fPIC. FFmpeg builds fine without PIC,
2397         # however the generated executable will not do anything
2398         # (simply quits with exit-code 1, no crash, no output).
2399         # Thus explicitly enable PIC here.
2400         enable pic
2401         disable symver
2402         SHFLAGS='-shared'
2403         oss_indev_extralibs="-lossaudio"
2404         oss_outdev_extralibs="-lossaudio"
2405         ;;
2406     dragonfly)
2407         enable malloc_aligned
2408         disable symver
2409         ;;
2410     freebsd)
2411         enable malloc_aligned
2412         ;;
2413     bsd/os)
2414         add_extralibs -lpoll -lgnugetopt
2415         strip="strip -d"
2416         ;;
2417     darwin)
2418         enable malloc_aligned
2419         gas="gas-preprocessor.pl $cc"
2420         enabled ppc && add_asflags -force_cpusubtype_ALL
2421         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
2422         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
2423         strip="${strip} -x"
2424         add_ldflags -Wl,-dynamic,-search_paths_first
2425         SLIBSUF=".dylib"
2426         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
2427         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
2428         FFSERVERLDFLAGS=-Wl,-bind_at_load
2429         objformat="macho"
2430         enabled x86_64 && objformat="macho64"
2431         enabled_any pic shared ||
2432             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
2433         ;;
2434     mingw32*)
2435         if test $target_os = "mingw32ce"; then
2436             disable network
2437         else
2438             target_os=mingw32
2439         fi
2440         LIBTARGET=i386
2441         if enabled x86_64; then
2442             enable malloc_aligned
2443             LIBTARGET=x64
2444         elif enabled arm; then
2445             LIBTARGET=arm-wince
2446         fi
2447         shlibdir_default="$bindir_default"
2448         SLIBPREF=""
2449         SLIBSUF=".dll"
2450         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
2451         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
2452         SLIB_EXTRA_CMD='-lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.lib)'
2453         SLIB_INSTALL_EXTRA_CMD='-install -m 644 $(SUBDIR)$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.lib) "$(SHLIBDIR)/$(SLIBNAME:$(SLIBSUF)=.lib)"; \
2454             install -m 644 $(SUBDIR)$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.lib) "$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.lib)"; \
2455             install -d "$(LIBDIR)"; \
2456             install -m 644 $(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) "$(LIBDIR)/lib$(SLIBNAME:$(SLIBSUF)=.dll.a)"'
2457         SLIB_UNINSTALL_EXTRA_CMD='rm -f "$(SHLIBDIR)/$(SLIBNAME:$(SLIBSUF)=.lib)"'
2458         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'
2459         objformat="win32"
2460         enable dos_paths
2461         check_cflags -fno-common
2462         check_cpp_condition _mingw.h "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) \
2463                                       || (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
2464                 die "ERROR: MinGW runtime version must be >= 3.15."
2465         add_cppflags -U__STRICT_ANSI__
2466         ;;
2467     cygwin*)
2468         target_os=cygwin
2469         shlibdir_default="$bindir_default"
2470         SLIBPREF="cyg"
2471         SLIBSUF=".dll"
2472         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
2473         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
2474         SHFLAGS='-shared -Wl,--enable-auto-image-base'
2475         objformat="win32"
2476         enable dos_paths
2477         check_cflags -fno-common
2478         ;;
2479     *-dos|freedos|opendos)
2480         network_extralibs="-lsocket"
2481         objformat="coff"
2482         enable dos_paths
2483         ;;
2484     linux)
2485         enable dv1394
2486         ;;
2487     irix*)
2488         target_os=irix
2489         ranlib="echo ignoring ranlib"
2490         ;;
2491     os/2*)
2492         strip="lxlite -CS"
2493         ln_s="cp -f"
2494         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
2495         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
2496         FFSERVERLDFLAGS=""
2497         LIBSUF="_s.a"
2498         SLIBPREF=""
2499         SLIBSUF=".dll"
2500         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
2501         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
2502         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
2503           echo PROTMODE >> $(SUBDIR)$(NAME).def; \
2504           echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
2505           echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
2506           echo EXPORTS >> $(SUBDIR)$(NAME).def; \
2507           emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
2508         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
2509           emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
2510         SLIB_INSTALL_EXTRA_CMD='install -m 644 $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib "$(LIBDIR)"'
2511         SLIB_UNINSTALL_EXTRA_CMD='rm -f "$(LIBDIR)"/$(LIBPREF)$(NAME)_dll.a "$(LIBDIR)"/$(LIBPREF)$(NAME)_dll.lib'
2512         enable dos_paths
2513         ;;
2514     gnu/kfreebsd)
2515         ;;
2516     gnu)
2517         ;;
2518     qnx)
2519         add_cppflags -D_QNX_SOURCE
2520         network_extralibs="-lsocket"
2521         ;;
2522     symbian)
2523         SLIBSUF=".dll"
2524         enable dos_paths
2525         add_cflags --include=$sysinclude/gcce/gcce.h
2526         ;;
2527     none)
2528         ;;
2529     *)
2530         die "Unknown OS '$target_os'."
2531         ;;
2532 esac
2533
2534 echo "config:$arch:$subarch:$cpu:$target_os:$cc_ident:$FFMPEG_CONFIGURATION" >config.fate
2535
2536 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable pic
2537
2538 set_default $PATHS_LIST
2539
2540 # we need to build at least one lib type
2541 if ! enabled_any static shared; then
2542     cat <<EOF
2543 At least one library type must be built.
2544 Specify --enable-static to build the static libraries or --enable-shared to
2545 build the shared libraries as well. To only build the shared libraries specify
2546 --disable-static in addition to --enable-shared.
2547 EOF
2548     exit 1;
2549 fi
2550
2551 disabled static && LIBNAME=""
2552
2553 die_license_disabled() {
2554     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
2555 }
2556
2557 die_license_disabled gpl libx264
2558 die_license_disabled gpl libxavs
2559 die_license_disabled gpl libxvid
2560 die_license_disabled gpl postproc
2561 die_license_disabled gpl x11grab
2562
2563 die_license_disabled nonfree libfaac
2564
2565 die_license_disabled version3 libopencore_amrnb
2566 die_license_disabled version3 libopencore_amrwb
2567 die_license_disabled version3 libvo_aacenc
2568 die_license_disabled version3 libvo_amrwbenc
2569
2570 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2571
2572 disabled optimizations || check_cflags -fomit-frame-pointer
2573
2574 enable_pic() {
2575     enable pic
2576     add_cppflags -DPIC
2577     add_cflags   -fPIC
2578     add_asflags  -fPIC
2579 }
2580
2581 enabled pic && enable_pic
2582
2583 check_cc <<EOF || die "Symbol mangling check failed."
2584 int ff_extern;
2585 EOF
2586 sym=$($nm $nm_opts $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
2587 extern_prefix=${sym%%ff_extern*}
2588
2589 check_cc <<EOF && enable inline_asm
2590 void foo(void) { __asm__ volatile ("" ::); }
2591 EOF
2592
2593 _restrict=
2594 for restrict_keyword in restrict __restrict__ __restrict; do
2595     check_cc <<EOF && _restrict=$restrict_keyword && break
2596 void foo(char * $restrict_keyword p);
2597 EOF
2598 done
2599
2600 check_cc <<EOF && enable attribute_packed
2601 struct { int x; } __attribute__((packed)) x;
2602 EOF
2603
2604 check_cc <<EOF && enable attribute_may_alias
2605 union { int x; } __attribute__((may_alias)) x;
2606 EOF
2607
2608 check_cc <<EOF || die "endian test failed"
2609 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
2610 EOF
2611 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
2612
2613 if enabled alpha; then
2614
2615     check_cflags -mieee
2616
2617 elif enabled arm; then
2618
2619     check_cflags -marm
2620     nogas=die
2621
2622     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
2623         enable vfp_args
2624     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
2625         case "${cross_prefix:-$cc}" in
2626             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
2627             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
2628 __asm__ (".eabi_attribute 28, 1");
2629 int main(void) { return 0; }
2630 EOF
2631         esac
2632         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
2633     fi
2634
2635     # We have to check if pld is a nop and disable it.
2636     check_asm pld '"pld [r0]"'
2637
2638     enabled armv5te && check_asm armv5te '"qadd r0, r0, r0"'
2639     enabled armv6   && check_asm armv6   '"sadd16 r0, r0, r0"'
2640     enabled armv6t2 && check_asm armv6t2 '"movt r0, #0"'
2641     enabled armvfp  && check_asm armvfp  '"fadds s0, s0, s0"'
2642     enabled iwmmxt  && check_asm iwmmxt  '"wunpckelub wr6, wr4"'
2643     enabled neon    && check_asm neon    '"vadd.i16 q0, q0, q0"'
2644
2645     enabled_all armv6t2 shared !pic && enable_pic
2646
2647 elif enabled mips; then
2648
2649     check_asm loongson '"dmult.g $1, $2, $3"'
2650     enabled mmi     && check_asm mmi     '"lq $2, 0($2)"'
2651
2652 elif enabled ppc; then
2653
2654     enable local_aligned_8 local_aligned_16
2655
2656     check_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
2657     check_asm ibm_asm   '"add 0, 0, 0"'
2658     check_asm ppc4xx    '"maclhw r10, r11, r12"'
2659     check_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
2660
2661     # AltiVec flags: The FSF version of GCC differs from the Apple version
2662     if enabled altivec; then
2663         nogas=warn
2664         check_cflags -maltivec -mabi=altivec &&
2665         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
2666         check_cflags -faltivec
2667
2668         # check if our compiler supports Motorola AltiVec C API
2669         check_cc <<EOF || disable altivec
2670 $inc_altivec_h
2671 int main(void) {
2672     vector signed int v1, v2, v3;
2673     v1 = vec_add(v2,v3);
2674     return 0;
2675 }
2676 EOF
2677
2678         # check if our compiler supports braces for vector declarations
2679         check_cc <<EOF || die "You need a compiler that supports {} in AltiVec vector declarations."
2680 $inc_altivec_h
2681 int main (void) { (vector int) {1}; return 0; }
2682 EOF
2683     fi
2684
2685 elif enabled sparc; then
2686
2687     enabled vis && check_asm vis '"pdist %f0, %f0, %f0"' -mcpu=ultrasparc &&
2688         add_cflags -mcpu=ultrasparc -mtune=ultrasparc
2689
2690 elif enabled x86; then
2691
2692     enable local_aligned_8 local_aligned_16
2693
2694     # check whether EBP is available on x86
2695     # As 'i' is stored on the stack, this program will crash
2696     # if the base pointer is used to access it because the
2697     # base pointer is cleared in the inline assembly code.
2698     check_exec_crash <<EOF && enable ebp_available
2699     volatile int i=0;
2700     __asm__ volatile (
2701         "xorl %%ebp, %%ebp"
2702     ::: "%ebp");
2703     return i;
2704 EOF
2705
2706     # check whether EBX is available on x86
2707     check_asm ebx_available '""::"b"(0)' &&
2708         check_asm ebx_available '"":::"%ebx"'
2709
2710     # check whether xmm clobbers are supported
2711     check_asm xmm_clobbers '"":::"%xmm0"'
2712
2713     # check whether more than 10 operands are supported
2714     check_cc <<EOF && enable ten_operands
2715 int main(void) {
2716     int x=0;
2717     __asm__ volatile(
2718         ""
2719         :"+&rm"(x), "+&rm"(x), "+&rm"(x), "+&rm"(x), "+&rm"(x), "+&rm"(x)
2720     );
2721     return 0;
2722 }
2723 EOF
2724
2725     # check whether binutils is new enough to compile SSSE3/MMX2
2726     enabled ssse3 && check_asm ssse3 '"pabsw %xmm0, %xmm0"'
2727     enabled mmx2  && check_asm mmx2  '"pmaxub %mm0, %mm1"'
2728
2729     check_asm bswap '"bswap %%eax" ::: "%eax"'
2730
2731     if ! disabled_any asm mmx yasm; then
2732         if check_cmd $yasmexe --version; then
2733             enabled x86_64 && yasm_extra="-m amd64"
2734             yasm_debug="-g dwarf2"
2735         elif check_cmd nasm -v; then
2736             yasmexe=nasm
2737             yasm_debug="-g -F dwarf"
2738             enabled x86_64 && test "$objformat" = elf && objformat=elf64
2739         fi
2740
2741         YASMFLAGS="-f $objformat $yasm_extra"
2742         enabled pic               && append YASMFLAGS "-DPIC"
2743         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
2744         case "$objformat" in
2745             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
2746         esac
2747
2748         check_yasm "pextrd [eax], xmm0, 1" && enable yasm ||
2749             die "yasm not found, use --disable-yasm for a crippled build"
2750         check_yasm "vpaddw xmm0, xmm0, xmm0" || disable avx
2751     fi
2752
2753     case "$cpu" in
2754         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
2755             disable fast_clz
2756         ;;
2757     esac
2758
2759 fi
2760
2761 if enabled asm; then
2762     as=${gas:=$as}
2763     check_asm gnu_as '".macro m n\n\\n:.int 0\n.endm\nm x"' ||
2764         $nogas "GNU assembler not found, install gas-preprocessor"
2765 fi
2766
2767 check_ldflags -Wl,--as-needed
2768
2769 if check_func dlopen; then
2770     ldl=
2771 elif check_func dlopen -ldl; then
2772     ldl=-ldl
2773 fi
2774
2775 if enabled network; then
2776     check_type "sys/types.h sys/socket.h" socklen_t
2777     check_type netdb.h "struct addrinfo"
2778     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
2779     check_type netinet/in.h "struct sockaddr_in6"
2780     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
2781     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
2782     # Prefer arpa/inet.h over winsock2
2783     if check_header arpa/inet.h ; then
2784         check_func closesocket
2785     elif check_header winsock2.h ; then
2786         check_func_headers winsock2.h closesocket -lws2 && \
2787             network_extralibs="-lws2" || \
2788         { check_func_headers winsock2.h closesocket -lws2_32 && \
2789             network_extralibs="-lws2_32"; }
2790         check_type ws2tcpip.h socklen_t
2791         check_type ws2tcpip.h "struct addrinfo"
2792         check_type ws2tcpip.h "struct ipv6_mreq"
2793         check_type ws2tcpip.h "struct sockaddr_in6"
2794         check_type ws2tcpip.h "struct sockaddr_storage"
2795         check_struct winsock2.h "struct sockaddr" sa_len
2796     else
2797         disable network
2798     fi
2799 fi
2800
2801 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
2802 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
2803
2804 check_func  fcntl
2805 check_func  fork
2806 check_func  getaddrinfo $network_extralibs
2807 check_func  gethrtime
2808 check_func  getrusage
2809 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
2810 check_func  inet_aton $network_extralibs
2811 check_func  isatty
2812 check_func  localtime_r
2813 check_func  ${malloc_prefix}memalign            && enable memalign
2814 check_func  mkstemp
2815 check_func  mmap
2816 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
2817 check_func  setrlimit
2818 check_func  strerror_r
2819 check_func  strtok_r
2820 check_func_headers conio.h kbhit
2821 check_func_headers io.h setmode
2822 check_func_headers lzo/lzo1x.h lzo1x_999_compress
2823 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
2824 check_func_headers windows.h GetProcessTimes
2825 check_func_headers windows.h MapViewOfFile
2826 check_func_headers windows.h VirtualAlloc
2827
2828 check_header dlfcn.h
2829 check_header dxva2api.h
2830 check_header libcrystalhd/libcrystalhd_if.h
2831 check_header malloc.h
2832 check_header poll.h
2833 check_header sys/mman.h
2834 check_header sys/resource.h
2835 check_header sys/select.h
2836 check_header termios.h
2837 check_header vdpau/vdpau.h
2838 check_header vdpau/vdpau_x11.h
2839 check_header X11/extensions/XvMClib.h
2840
2841 check_struct dxva2api.h DXVA_PictureParameters wDecodedPictureIndex
2842
2843 if ! enabled_any memalign memalign_hack posix_memalign malloc_aligned &&
2844      enabled_any $need_memalign ; then
2845     die "Error, no aligned memory allocator but SSE enabled, disable it or use --enable-memalign-hack."
2846 fi
2847
2848 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
2849 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
2850
2851 # check for some common methods of building with pthread support
2852 # do this before the optional library checks as some of them require pthreads
2853 if ! disabled pthreads && ! enabled w32threads; then
2854     enable pthreads
2855     if check_func pthread_create; then
2856         :
2857     elif check_func pthread_create -pthread; then
2858         add_cflags -pthread
2859         add_extralibs -pthread
2860     elif check_func pthread_create -pthreads; then
2861         add_cflags -pthreads
2862         add_extralibs -pthreads
2863     elif check_func pthread_create -lpthreadGC2; then
2864         add_extralibs -lpthreadGC2
2865     elif ! check_lib pthread.h pthread_create -lpthread; then
2866         disable pthreads
2867     fi
2868 fi
2869
2870 for thread in $THREADS_LIST; do
2871     if enabled $thread; then
2872         test -n "$thread_type" &&
2873             die "ERROR: Only one thread type must be selected." ||
2874             thread_type="$thread"
2875     fi
2876 done
2877
2878 check_lib math.h sin -lm && LIBM="-lm"
2879 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
2880 enabled vaapi && require vaapi va/va.h vaInitialize -lva
2881
2882 check_mathfunc exp2
2883 check_mathfunc exp2f
2884 check_mathfunc llrint
2885 check_mathfunc llrintf
2886 check_mathfunc log2
2887 check_mathfunc log2f
2888 check_mathfunc lrint
2889 check_mathfunc lrintf
2890 check_mathfunc round
2891 check_mathfunc roundf
2892 check_mathfunc trunc
2893 check_mathfunc truncf
2894
2895 # these are off by default, so fail if requested and not available
2896 enabled avisynth   && require2 vfw32 "windows.h vfw.h" AVIFileInit -lavifil32
2897 enabled libcelt    && require libcelt celt/celt.h celt_decode -lcelt0
2898 enabled frei0r     && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
2899 enabled libdirac   && require_pkg_config dirac                          \
2900     "libdirac_decoder/dirac_parser.h libdirac_encoder/dirac_encoder.h"  \
2901     "dirac_decoder_init dirac_encoder_init"
2902 enabled libfaac    && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
2903 enabled libfreetype && add_cflags $(pkg-config --cflags freetype2) && require libfreetype ft2build.h FT_Init_FreeType -lfreetype
2904 enabled libgsm     && require  libgsm gsm/gsm.h gsm_create -lgsm
2905 enabled libmp3lame && require  "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
2906 enabled libnut     && require  libnut libnut.h nut_demuxer_init -lnut
2907 enabled libopencore_amrnb  && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
2908 enabled libopencore_amrwb  && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
2909 enabled libopencv  && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
2910 enabled libopenjpeg && require libopenjpeg openjpeg.h opj_version -lopenjpeg
2911 enabled librtmp    && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
2912 enabled libschroedinger && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
2913 enabled libspeex   && require  libspeex speex/speex.h speex_decoder_init -lspeex
2914 enabled libtheora  && require  libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
2915 enabled libvo_aacenc && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
2916 enabled libvo_amrwbenc && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
2917 enabled libvorbis  && require  libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
2918 enabled libvpx     && {
2919     enabled libvpx_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
2920                                 die "ERROR: libvpx decoder version must be >=0.9.1"; }
2921     enabled libvpx_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
2922                                 die "ERROR: libvpx encoder version must be >=0.9.6"; } }
2923 enabled libx264    && require  libx264 x264.h x264_encoder_encode -lx264 &&
2924                       { check_cpp_condition x264.h "X264_BUILD >= 99" ||
2925                         die "ERROR: libx264 version must be >= 0.99."; }
2926 enabled libxavs    && require  libxavs xavs.h xavs_encoder_encode -lxavs
2927 enabled libxvid    && require  libxvid xvid.h xvid_global -lxvidcore
2928 enabled mlib       && require  mediaLib mlib_types.h mlib_VectorSub_S16_U8_Mod -lmlib
2929
2930 # libdc1394 check
2931 if enabled libdc1394; then
2932     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
2933         enable libdc1394_2; } ||
2934     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
2935         enable libdc1394_1; } ||
2936     die "ERROR: No version of libdc1394 found "
2937 fi
2938
2939 if check_pkg_config sdl SDL_version.h SDL_Linked_Version; then
2940     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
2941     enable sdl &&
2942     check_struct SDL.h SDL_VideoInfo current_w $sdl_cflags && enable sdl_video_size
2943 fi
2944
2945 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
2946
2947 check_header linux/fb.h
2948 check_header linux/videodev.h
2949 check_header linux/videodev2.h
2950 check_header sys/videoio.h
2951
2952 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
2953 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
2954 # w32api 3.12 had it defined wrong
2955 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
2956
2957 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
2958 { check_header dev/bktr/ioctl_meteor.h &&
2959   check_header dev/bktr/ioctl_bt848.h; } ||
2960 { check_header machine/ioctl_meteor.h &&
2961   check_header machine/ioctl_bt848.h; } ||
2962 { check_header dev/video/meteor/ioctl_meteor.h &&
2963   check_header dev/video/bktr/ioctl_bt848.h; } ||
2964 check_header dev/ic/bt8xx.h
2965
2966 check_header sndio.h
2967 if check_struct sys/soundcard.h audio_buf_info bytes; then
2968     enable_safe sys/soundcard.h
2969 else
2970     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
2971     #include <sys/soundcard.h>
2972     audio_buf_info abc;
2973 EOF
2974 fi
2975 check_header soundcard.h
2976
2977 enabled_any alsa_indev alsa_outdev && check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
2978
2979 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait
2980
2981 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
2982
2983 enabled x11grab                         &&
2984 check_header X11/Xlib.h                 &&
2985 check_header X11/extensions/XShm.h      &&
2986 check_header X11/extensions/Xfixes.h    &&
2987 check_func XOpenDisplay -lX11           &&
2988 check_func XShmCreateImage -lX11 -lXext &&
2989 check_func XFixesGetCursorImage -lX11 -lXext -lXfixes
2990
2991 if ! disabled vaapi; then
2992     check_lib va/va.h vaInitialize -lva && {
2993         check_cpp_condition va/va_version.h "VA_CHECK_VERSION(0,32,0)" ||
2994         warn "Please upgrade to VA-API >= 0.32 if you would like full VA-API support.";
2995     } || disable vaapi
2996 fi
2997
2998 if ! disabled vdpau && enabled vdpau_vdpau_h; then
2999 check_cpp_condition \
3000     vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
3001     { echolog "Please upgrade to libvdpau >= 0.2 if you would like vdpau support." &&
3002       disable vdpau; }
3003 fi
3004
3005 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
3006
3007 # add some useful compiler flags if supported
3008 check_cflags -Wdeclaration-after-statement
3009 check_cflags -Wall
3010 check_cflags -Wno-parentheses
3011 check_cflags -Wno-switch
3012 check_cflags -Wdisabled-optimization
3013 check_cflags -Wpointer-arith
3014 check_cflags -Wredundant-decls
3015 check_cflags -Wno-pointer-sign
3016 check_cflags -Wcast-qual
3017 check_cflags -Wwrite-strings
3018 check_cflags -Wtype-limits
3019 check_cflags -Wundef
3020 check_cflags -Wmissing-prototypes
3021 check_cflags -Wno-pointer-to-int-cast
3022 enabled extra_warnings && check_cflags -Winline
3023
3024 # add some linker flags
3025 check_ldflags -Wl,--warn-common
3026 check_ldflags '-Wl,-rpath-link,\$(BUILD_ROOT)/libpostproc -Wl,-rpath-link,\$(BUILD_ROOT)/libswscale -Wl,-rpath-link,\$(BUILD_ROOT)/libavfilter -Wl,-rpath-link,\$(BUILD_ROOT)/libavdevice -Wl,-rpath-link,\$(BUILD_ROOT)/libavformat -Wl,-rpath-link,\$(BUILD_ROOT)/libavcodec -Wl,-rpath-link,\$(BUILD_ROOT)/libavutil'
3027 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
3028
3029 echo "X{};" > $TMPV
3030 if test_ldflags -Wl,--version-script,$TMPV; then
3031     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
3032     check_cc <<EOF && enable symver_asm_label
3033 void ff_foo(void) __asm__ ("av_foo@VERSION");
3034 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
3035 EOF
3036     check_cc <<EOF && enable symver_gnu_asm
3037 __asm__(".symver ff_foo,av_foo@VERSION");
3038 void ff_foo(void) {}
3039 EOF
3040 fi
3041
3042 if enabled small; then
3043     add_cflags $size_cflags
3044     optimizations="small"
3045 elif enabled optimizations; then
3046     add_cflags $speed_cflags
3047 else
3048     add_cflags $noopt_cflags
3049 fi
3050 check_cflags -fno-math-errno
3051 check_cflags -fno-signed-zeros
3052
3053 if enabled icc; then
3054     # Just warnings, no remarks
3055     check_cflags -w1
3056     # -wd: Disable following warnings
3057     # 144, 167, 556: -Wno-pointer-sign
3058     # 1292: attribute "foo" ignored
3059     # 10006: ignoring unknown option -fno-signed-zeros
3060     # 10148: ignoring unknown option -Wno-parentheses
3061     # 10156: ignoring option '-W'; no argument required
3062     check_cflags -wd144,167,556,1292,10006,10148,10156
3063     # 11030: Warning unknown option --as-needed
3064     # 10156: ignoring option '-export'; no argument required
3065     check_ldflags -wd10156,11030
3066     # Allow to compile with optimizations
3067     check_ldflags -march=$cpu
3068     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
3069     enable ebp_available
3070     if enabled x86_32; then
3071         test ${icc_version%%.*} -ge 11 && \
3072             check_cflags -falign-stack=maintain-16-byte || \
3073             disable aligned_stack
3074     fi
3075 elif enabled ccc; then
3076     # disable some annoying warnings
3077     add_cflags -msg_disable cvtu32to64
3078     add_cflags -msg_disable embedcomment
3079     add_cflags -msg_disable needconstext
3080     add_cflags -msg_disable nomainieee
3081     add_cflags -msg_disable ptrmismatch1
3082     add_cflags -msg_disable unreachcode
3083 elif enabled gcc; then
3084     check_cflags -fno-tree-vectorize
3085     check_cflags -Werror=implicit-function-declaration
3086     check_cflags -Werror=missing-prototypes
3087 elif enabled llvm_gcc; then
3088     check_cflags -mllvm -stack-alignment=16
3089 elif enabled clang; then
3090     check_cflags -mllvm -stack-alignment=16
3091     check_cflags -Qunused-arguments
3092 elif enabled armcc; then
3093     # 2523: use of inline assembler is deprecated
3094     add_cflags -W${armcc_opt},--diag_suppress=2523
3095     add_cflags -W${armcc_opt},--diag_suppress=1207
3096     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
3097     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
3098 elif enabled tms470; then
3099     add_cflags -pds=824 -pds=837
3100 elif enabled pathscale; then
3101     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
3102 fi
3103
3104 enabled_any $THREADS_LIST      && enable threads
3105
3106 check_deps $CONFIG_LIST       \
3107            $CONFIG_EXTRA      \
3108            $HAVE_LIST         \
3109            $DECODER_LIST      \
3110            $ENCODER_LIST      \
3111            $HWACCEL_LIST      \
3112            $PARSER_LIST       \
3113            $BSF_LIST          \
3114            $DEMUXER_LIST      \
3115            $MUXER_LIST        \
3116            $FILTER_LIST       \
3117            $INDEV_LIST        \
3118            $OUTDEV_LIST       \
3119            $PROTOCOL_LIST     \
3120            $ACODEC_TESTS      \
3121            $VCODEC_TESTS      \
3122            $LAVF_TESTS        \
3123            $LAVFI_TESTS       \
3124            $SEEK_TESTS        \
3125
3126 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
3127
3128 echo "install prefix            $prefix"
3129 echo "source path               $source_path"
3130 echo "C compiler                $cc"
3131 echo "ARCH                      $arch ($cpu)"
3132 if test "$build_suffix" != ""; then
3133     echo "build suffix              $build_suffix"
3134 fi
3135 if test "$extra_version" != ""; then
3136     echo "version string suffix     $extra_version"
3137 fi
3138 echo "big-endian                ${bigendian-no}"
3139 echo "runtime cpu detection     ${runtime_cpudetect-no}"
3140 if enabled x86; then
3141     echo "yasm                      ${yasm-no}"
3142     echo "MMX enabled               ${mmx-no}"
3143     echo "MMX2 enabled              ${mmx2-no}"
3144     echo "3DNow! enabled            ${amd3dnow-no}"
3145     echo "3DNow! extended enabled   ${amd3dnowext-no}"
3146     echo "SSE enabled               ${sse-no}"
3147     echo "SSSE3 enabled             ${ssse3-no}"
3148     echo "CMOV enabled              ${cmov-no}"
3149     echo "CMOV is fast              ${fast_cmov-no}"
3150     echo "EBX available             ${ebx_available-no}"
3151     echo "EBP available             ${ebp_available-no}"
3152     echo "10 operands supported     ${ten_operands-no}"
3153 fi
3154 if enabled arm; then
3155     echo "ARMv5TE enabled           ${armv5te-no}"
3156     echo "ARMv6 enabled             ${armv6-no}"
3157     echo "ARMv6T2 enabled           ${armv6t2-no}"
3158     echo "ARM VFP enabled           ${armvfp-no}"
3159     echo "IWMMXT enabled            ${iwmmxt-no}"
3160     echo "NEON enabled              ${neon-no}"
3161 fi
3162 if enabled mips; then
3163     echo "MMI enabled               ${mmi-no}"
3164 fi
3165 if enabled ppc; then
3166     echo "AltiVec enabled           ${altivec-no}"
3167     echo "PPC 4xx optimizations     ${ppc4xx-no}"
3168     echo "dcbzl available           ${dcbzl-no}"
3169 fi
3170 if enabled sparc; then
3171     echo "VIS enabled               ${vis-no}"
3172 fi
3173 echo "debug symbols             ${debug-no}"
3174 echo "strip symbols             ${stripping-no}"
3175 echo "optimizations             ${optimizations-no}"
3176 echo "static                    ${static-no}"
3177 echo "shared                    ${shared-no}"
3178 echo "postprocessing support    ${postproc-no}"
3179 echo "new filter support        ${avfilter-no}"
3180 echo "network support           ${network-no}"
3181 echo "threading support         ${thread_type-no}"
3182 echo "SDL support               ${sdl-no}"
3183 echo "Sun medialib support      ${mlib-no}"
3184 echo "AVISynth enabled          ${avisynth-no}"
3185 echo "libcelt enabled           ${libcelt-no}"
3186 echo "frei0r enabled            ${frei0r-no}"
3187 echo "libdc1394 support         ${libdc1394-no}"
3188 echo "libdirac enabled          ${libdirac-no}"
3189 echo "libfaac enabled           ${libfaac-no}"
3190 echo "libgsm enabled            ${libgsm-no}"
3191 echo "libmp3lame enabled        ${libmp3lame-no}"
3192 echo "libnut enabled            ${libnut-no}"
3193 echo "libopencore-amrnb support ${libopencore_amrnb-no}"
3194 echo "libopencore-amrwb support ${libopencore_amrwb-no}"
3195 echo "libopencv support         ${libopencv-no}"
3196 echo "libopenjpeg enabled       ${libopenjpeg-no}"
3197 echo "librtmp enabled           ${librtmp-no}"
3198 echo "libschroedinger enabled   ${libschroedinger-no}"
3199 echo "libspeex enabled          ${libspeex-no}"
3200 echo "libtheora enabled         ${libtheora-no}"
3201 echo "libva enabled             ${vaapi-no}"
3202 echo "libvo-aacenc support      ${libvo_aacenc-no}"
3203 echo "libvo-amrwbenc support    ${libvo_amrwbenc-no}"
3204 echo "libvorbis enabled         ${libvorbis-no}"
3205 echo "libvpx enabled            ${libvpx-no}"
3206 echo "libx264 enabled           ${libx264-no}"
3207 echo "libxavs enabled           ${libxavs-no}"
3208 echo "libxvid enabled           ${libxvid-no}"
3209 echo "zlib enabled              ${zlib-no}"
3210 echo "bzlib enabled             ${bzlib-no}"
3211 echo
3212
3213 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
3214     echo "Enabled ${type}s:"
3215     eval list=\$$(toupper $type)_LIST
3216     print_enabled '_*' $list | sort | pr -r -3 -t
3217     echo
3218 done
3219
3220 license="LGPL version 2.1 or later"
3221 if enabled nonfree; then
3222     license="nonfree and unredistributable"
3223 elif enabled gplv3; then
3224     license="GPL version 3 or later"
3225 elif enabled lgplv3; then
3226     license="LGPL version 3 or later"
3227 elif enabled gpl; then
3228     license="GPL version 2 or later"
3229 fi
3230
3231 echo "License: $license"
3232
3233 echo "Creating config.mak and config.h..."
3234
3235 # build tree in object directory if source path is different from current one
3236 if enabled source_path_used; then
3237     DIRS="
3238         doc
3239         libavcodec
3240         libavcodec/$arch
3241         libavdevice
3242         libavfilter
3243         libavfilter/$arch
3244         libavfilter/libmpcodecs
3245         libavfilter/libmpcodecs/libvo
3246         libavformat
3247         libavutil
3248         libavutil/$arch
3249         libpostproc
3250         libswscale
3251         libswscale/$arch
3252         tests
3253         tools
3254     "
3255     FILES="
3256         Makefile
3257         common.mak
3258         subdir.mak
3259         doc/texi2pod.pl
3260         libavcodec/Makefile
3261         libavcodec/${arch}/Makefile
3262         libavdevice/Makefile
3263         libavfilter/Makefile
3264         libavfilter/${arch}/Makefile
3265         libavformat/Makefile
3266         libavutil/Makefile
3267         libpostproc/Makefile
3268         libswscale/Makefile
3269     "
3270     map 'mkdir -p $v' $DIRS;
3271     map 'test -f "$source_path/$v" && $ln_s "$source_path/$v" $v' $FILES
3272 fi
3273
3274 enabled stripping || strip="echo skipping strip"
3275
3276 config_files="$TMPH config.mak"
3277
3278 cat > config.mak <<EOF
3279 # Automatically generated by configure - do not modify!
3280 ifndef FFMPEG_CONFIG_MAK
3281 FFMPEG_CONFIG_MAK=1
3282 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
3283 prefix=$prefix
3284 LIBDIR=\$(DESTDIR)$libdir
3285 SHLIBDIR=\$(DESTDIR)$shlibdir
3286 INCDIR=\$(DESTDIR)$incdir
3287 BINDIR=\$(DESTDIR)$bindir
3288 DATADIR=\$(DESTDIR)$datadir
3289 MANDIR=\$(DESTDIR)$mandir
3290 SRC_PATH="$source_path"
3291 SRC_PATH_BARE=$source_path
3292 BUILD_ROOT="$PWD"
3293 CC_IDENT=$cc_ident
3294 ARCH=$arch
3295 CC=$cc
3296 AS=$as
3297 LD=$ld
3298 DEPCC=$dep_cc
3299 YASM=$yasmexe
3300 YASMDEP=$yasmexe
3301 AR=$ar
3302 RANLIB=$ranlib
3303 CP=cp -p
3304 LN_S=$ln_s
3305 STRIP=$strip
3306 CPPFLAGS=$CPPFLAGS
3307 CFLAGS=$CFLAGS
3308 ASFLAGS=$ASFLAGS
3309 CC_O=$CC_O
3310 LDFLAGS=$LDFLAGS
3311 FFSERVERLDFLAGS=$FFSERVERLDFLAGS
3312 SHFLAGS=$SHFLAGS
3313 YASMFLAGS=$YASMFLAGS
3314 BUILDSUF=$build_suffix
3315 FULLNAME=$FULLNAME
3316 LIBPREF=$LIBPREF
3317 LIBSUF=$LIBSUF
3318 LIBNAME=$LIBNAME
3319 SLIBPREF=$SLIBPREF
3320 SLIBSUF=$SLIBSUF
3321 EXESUF=$EXESUF
3322 EXTRA_VERSION=$extra_version
3323 DEPFLAGS=$DEPFLAGS
3324 CCDEP=$CCDEP
3325 ASDEP=$ASDEP
3326 CC_DEPFLAGS=$CC_DEPFLAGS
3327 AS_DEPFLAGS=$AS_DEPFLAGS
3328 HOSTCC=$host_cc
3329 HOSTCFLAGS=$host_cflags
3330 HOSTEXESUF=$HOSTEXESUF
3331 HOSTLDFLAGS=$host_ldflags
3332 HOSTLIBS=$host_libs
3333 TARGET_EXEC=$target_exec
3334 TARGET_PATH=$target_path
3335 SDL_LIBS=$sdl_libs
3336 SDL_CFLAGS=$sdl_cflags
3337 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
3338 EXTRALIBS=$extralibs
3339 INSTALL=install
3340 LIBTARGET=${LIBTARGET}
3341 SLIBNAME=${SLIBNAME}
3342 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
3343 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
3344 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
3345 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
3346 SLIB_INSTALL_EXTRA_CMD=${SLIB_INSTALL_EXTRA_CMD}
3347 SLIB_UNINSTALL_EXTRA_CMD=${SLIB_UNINSTALL_EXTRA_CMD}
3348 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
3349 EOF
3350
3351 get_version(){
3352     name=$1
3353     file=$source_path/$2
3354     eval $(grep "#define ${name}_VERSION_M" "$file" | awk '{ print $2"="$3 }')
3355     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
3356     lcname=$(tolower $name)
3357     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
3358     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
3359 }
3360
3361 get_version LIBSWSCALE  libswscale/swscale.h
3362 get_version LIBPOSTPROC libpostproc/postprocess.h
3363 get_version LIBAVCODEC  libavcodec/version.h
3364 get_version LIBAVDEVICE libavdevice/avdevice.h
3365 get_version LIBAVFORMAT libavformat/version.h
3366 get_version LIBAVUTIL   libavutil/avutil.h
3367 get_version LIBAVFILTER libavfilter/avfilter.h
3368
3369 cat > $TMPH <<EOF
3370 /* Automatically generated by configure - do not modify! */
3371 #ifndef FFMPEG_CONFIG_H
3372 #define FFMPEG_CONFIG_H
3373 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
3374 #define FFMPEG_LICENSE "$(c_escape $license)"
3375 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
3376 #define CC_TYPE "$cc_type"
3377 #define CC_VERSION $cc_version
3378 #define restrict $_restrict
3379 #define EXTERN_PREFIX "${extern_prefix}"
3380 #define EXTERN_ASM ${extern_prefix}
3381 #define SLIBSUF "$SLIBSUF"
3382 EOF
3383
3384 test -n "$malloc_prefix" &&
3385     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
3386
3387 if enabled small || disabled optimizations; then
3388     echo "#undef  av_always_inline"  >> $TMPH
3389     if enabled small; then
3390         echo "#define av_always_inline inline"  >> $TMPH
3391     else
3392         echo "#define av_always_inline av_unused"  >> $TMPH
3393     fi
3394 fi
3395
3396 if enabled yasm; then
3397     append config_files $TMPASM
3398     printf '' >$TMPASM
3399 fi
3400
3401 print_config ARCH_   "$config_files" $ARCH_LIST
3402 print_config HAVE_   "$config_files" $HAVE_LIST
3403 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
3404                                      $CONFIG_EXTRA      \
3405                                      $DECODER_LIST      \
3406                                      $ENCODER_LIST      \
3407                                      $HWACCEL_LIST      \
3408                                      $PARSER_LIST       \
3409                                      $BSF_LIST          \
3410                                      $DEMUXER_LIST      \
3411                                      $MUXER_LIST        \
3412                                      $FILTER_LIST       \
3413                                      $PROTOCOL_LIST     \
3414                                      $INDEV_LIST        \
3415                                      $OUTDEV_LIST       \
3416
3417 cat >>config.mak <<EOF
3418 ACODEC_TESTS=$(print_enabled -n _test $ACODEC_TESTS)
3419 VCODEC_TESTS=$(print_enabled -n _test $VCODEC_TESTS)
3420 LAVF_TESTS=$(print_enabled   -n _test $LAVF_TESTS)
3421 LAVFI_TESTS=$(print_enabled  -n _test $LAVFI_TESTS)
3422 SEEK_TESTS=$(print_enabled   -n _test $SEEK_TESTS)
3423 EOF
3424
3425 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
3426 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
3427
3428 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
3429 cp_if_changed $TMPH config.h
3430 touch .config
3431
3432 enabled yasm && cp_if_changed $TMPASM config.asm
3433
3434 cat > $TMPH <<EOF
3435 /* Generated by ffconf */
3436 #ifndef AVUTIL_AVCONFIG_H
3437 #define AVUTIL_AVCONFIG_H
3438 EOF
3439
3440 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
3441
3442 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
3443
3444 cp_if_changed $TMPH libavutil/avconfig.h
3445
3446 test -n "$WARNINGS" && printf "\n$WARNINGS"
3447
3448 # build pkg-config files
3449
3450 pkgconfig_generate(){
3451 name=$1
3452 shortname=${name#lib}${build_suffix}
3453 comment=$2
3454 version=$3
3455 libs=$4
3456 requires=$5
3457 enabled ${name#lib} || return 0
3458 cat <<EOF > $name/$name.pc
3459 prefix=$prefix
3460 exec_prefix=\${prefix}
3461 libdir=$libdir
3462 includedir=$incdir
3463
3464 Name: $name
3465 Description: $comment
3466 Version: $version
3467 Requires: $(enabled shared || echo $requires)
3468 Requires.private: $(enabled shared && echo $requires)
3469 Conflicts:
3470 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
3471 Libs.private: $(enabled shared && echo $libs)
3472 Cflags: -I\${includedir}
3473 EOF
3474 cat <<EOF > $name/$name-uninstalled.pc
3475 prefix=
3476 exec_prefix=
3477 libdir=\${pcfiledir}
3478 includedir=${source_path}
3479
3480 Name: $name
3481 Description: $comment
3482 Version: $version
3483 Requires: $requires
3484 Conflicts:
3485 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
3486 Cflags: -I\${includedir}
3487 EOF
3488 }
3489
3490 pkgconfig_generate libavutil "FFmpeg utility library" "$LIBAVUTIL_VERSION" "$LIBM"
3491 pkgconfig_generate libavcodec "FFmpeg codec library" "$LIBAVCODEC_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
3492 pkgconfig_generate libavformat "FFmpeg container format library" "$LIBAVFORMAT_VERSION" "$extralibs" "libavcodec = $LIBAVCODEC_VERSION"
3493 pkgconfig_generate libavdevice "FFmpeg device handling library" "$LIBAVDEVICE_VERSION" "$extralibs" "libavformat = $LIBAVFORMAT_VERSION"
3494 pkgconfig_generate libavfilter "FFmpeg video filtering library" "$LIBAVFILTER_VERSION" "$extralibs"
3495 pkgconfig_generate libpostproc "FFmpeg post processing library" "$LIBPOSTPROC_VERSION" "" "libavutil = $LIBAVUTIL_VERSION"
3496 pkgconfig_generate libswscale "FFmpeg image rescaling library" "$LIBSWSCALE_VERSION" "$LIBM" "libavutil = $LIBAVUTIL_VERSION"